Weld County, CO: risk-assessment baseline packet, release 2026-10

Summary

Plan status as of 2026-09-30: Approved, expires 2026-12-21. Plan: Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685), approved 2021-12-22.

Since the plan was approved on 2021-12-22: no new hazard declaration and 329 NOAA Storm Events records; details under "What changed since your last plan".

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($44,450,019 a year), Cold Wave ($18,924,995) and Tornado ($16,075,181).

The tables that follow are organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B (B1-a to B2-c); each heading says which item its tables support.

Terms used

EAL:: expected annual loss: FEMA's modeled average yearly loss from a hazard.
NRI:: FEMA's National Risk Index (version 1.20, December 2025).
NFIP:: National Flood Insurance Program.
RL, SRL:: repetitive loss and severe repetitive loss: flood-insured properties with repeated claims (definitions in B2-c).
FMA, HMGP:: Flood Mitigation Assistance and Hazard Mitigation Grant Program, FEMA mitigation grants.
PA:: FEMA Public Assistance: disaster aid to governments and some nonprofits.
Zone-level:: NOAA logged the event for a National Weather Service forecast zone, which may include parts of neighboring counties.
County-coded:: NOAA logged the event to this county.
FIPS:: the federal code for a place; 08123 is this area.
D0 to D4:: U.S. Drought Monitor categories, from abnormally dry (D0) to exceptional drought (D4).
F/EF, EFU:: Fujita and Enhanced Fujita tornado ratings; EFU is an unrated tornado.
kt, CONUS:: knots (1 kt is about 1.15 mph); the contiguous United States.
CFR:: Code of Federal Regulations.
A4-a, E1-a:: other items of FEMA's Local Mitigation Plan Review Tool (sources, and changes since the last plan).
Dollars:: nominal (as reported, labeled with the year), not adjusted for inflation.

Plan clock

Status:: Approved, expires 2026-12-21
Plan:: Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)
Approved:: 2021-12-22
Days to expiry:: 82
Update underway:: none recorded in FEMA's plan tracker

What changed since your last plan (approved 2021-12-22)

New federal declarations:: none
Storm Events records since approval:: 329 records (data through 2026-06-30)
Repetitive loss now:: FMA RL 0, SRL 1 (44 CFR 77.2); any definition: 7
Repeat-flood change:: this release sets the baseline count.

Sources: 1, 2, 4, 6 (numbered list at the end)

Plan status for every jurisdiction listed in this county: 22 rows, in the section "Plan clock: Plan status for every jurisdiction listed in this county" on the following pages.

State plan status and tribal plans in this state: see the state page.

Plan clock

Plan status for every jurisdiction listed in this county

Source: 1

Jurisdiction	Type	Status	Plan	Approved	Expires	Days to expirynegative = days since expiry	Notes
Weld County	County	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Ault town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Dacono city	City	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Eaton town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Erie town	Town	Approved, expires 2027-06-21	Boulder County, CO Hazard Mitigation Plan 2022 (FEMA plan 108317)	2022-06-22	2027-06-21	264	Also approved under plan 107685 (Weld County, CO Hazard Mitigation Plan 2021, expires 2026-12-21). FEMA's plan status map shows one plan per jurisdiction and may show one of these; this packet uses the approved plan that expires last.
Evans city	City	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Firestone town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Fort Lupton city	City	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Frederick town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Greeley city	City	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Hudson town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Johnstown town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Keenesburg town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Kersey town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
La Salle town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Mead town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Milliken town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Nunn town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Pierce town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Platteville town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Severance town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82
Windsor town	Town	Approved, expires 2026-12-21	Weld County, CO Hazard Mitigation Plan 2021 (FEMA plan 107685)	2021-12-22	2026-12-21	82

Supports FEMA checklist item B1-a: hazard identification

Hazards NRI does not cover (local data needed)

dam failure (incl. upstream dams)
levee failure
flash flood as its own subtype
ice jams
debris flows
erosion (riverine and coastal)
land subsidence and sinkholes
expansive soils

The 18 National Risk Index hazards, ranked by expected annual loss (EAL)

Sources: 5, 6

Rank by EAL	Hazard	NRI risk rating	EAL rating	EAL buildingsmodeled dollars per year	EAL agriculturemodeled dollars per year	Cost of expected deaths and injuriesFEMA's dollar value per year, not property damage	EAL total (see note)modeled dollars per year	Storm Events records, 1996 to 2026-06-30count	Why this hazard can be left outNRI Not Applicable, no declaration and no Storm Events record since 1996	Storm Events coverage note
1	Inland Flooding	Relatively Moderate	Relatively Moderate	$44,082,520	$132,318	$235,180	$44,450,019	69
2	Cold Wave	Relatively High	Very High	$38,440	$2,728,245	$16,158,310	$18,924,995	12		Includes 1 Frost/Freeze record (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
3	Tornado	Relatively High	Relatively High	$10,126,109	$254,733	$5,694,337	$16,075,181	129
4	Hail	Relatively High	Relatively High	$7,681,452	$5,277,883	$1,145,920	$14,105,255	965
5	Strong Wind	Relatively High	Relatively High	$851,201	$123,710	$3,150,353	$4,125,263	406		Includes 164 High Wind and 6 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
6	Earthquake	Relatively Low	Relatively Low	$1,545,933	n/a	$277,952	$1,823,885			Storm Events does not record earthquakes.
7	Lightning	Relatively High	Relatively High	$85,293	n/a	$1,689,792	$1,775,085	27
8	Wildfire	Relatively Low	Relatively Moderate	$1,217,507	$6,157	$96,811	$1,320,474	6
9	Heat Wave	Relatively Low	Relatively Low	$151	$48,525	$726,292	$774,969	0		No recorded events in Storm Events since 1996 (data through 2026-06-30).
10	Winter Weather	Relatively High	Relatively High	$221,269	$581	$540,255	$762,106	176
11	Ice Storm	Relatively Moderate	Relatively Moderate	$6,763	n/a	$475,191	$481,954	0		No recorded events in Storm Events since 1996 (data through 2026-06-30).
12	Drought	Relatively Low	Relatively Low	n/a	$74,693	n/a	$74,693	4
13	Landslide	Very Low	Very Low	$939	n/a	$21	$960	0		Declared 3 times; no Storm Events record of this type.
14	Volcanic Activity	Very Low	Very Low	under $1	n/a	$53	$53	0		No recorded events in Storm Events since 1996 (data through 2026-06-30).
	Hurricane	Not Applicable	Not Applicable					0	NRI rates hurricane Not Applicable for this county, and no counted federal declaration for this county names it (EM-3224-CO names it but is not counted as a local occurrence; see B1-d).	No recorded events in Storm Events since 1996 (data through 2026-06-30).

Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).

NRI risk rating combines expected annual loss with social vulnerability and community resilience; EAL rating rates expected annual loss alone. Both compare this county with all U.S. counties.

Local data needed: state and local landslide and volcanic activity records (Storm Events records these hazards only in part).

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche, coastal flooding and tsunami. That is the evidence for leaving them out of the plan.

The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.

Supports FEMA checklist item B1-b: hazard location

Affects the whole county (national data give no location within it): Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather.

Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.

Hazards that vary within the county: highest-rated census tracts

Source: 5

Hazard	Highest-rated census tractsNRI risk rating, score 0 to 100
Earthquake	tract 7.05 (Relatively Low, 66.7); tract 1 (Relatively Low, 65.0); tract 13 (Relatively Low, 62.4)
Hurricane	no tract has a National Risk Index rating for this hazard
Landslide	tract 25.01 (Relatively Low, 89.5); tract 22.09 (Very Low, 75.4); tract 25.02 (Very Low, 73.6)
Tornado	tract 25.01 (Relatively High, 92.1); tract 13 (Relatively High, 91.5); tract 15 (Relatively High, 90.0)
Volcanic Activity	tract 21.01 (Very Low, 75.8); tract 14.06 (Very Low, 74.1); tract 10.05 (Very Low, 73.0)
Wildfire	tract 25.01 (Relatively High, 97.9); tract 18 (Relatively Moderate, 94.5); tract 19.14 (Relatively Moderate, 94.2)

Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number (for example 7.05 is Census Tract 7.05). FEMA's Resilience Analysis and Planning Tool maps the National Risk Index for every tract: https://www.fema.gov/emergency-managers/practitioners/resilience-analysis-and-planning-tool

Supports FEMA checklist item B1-c: hazard extent

Extent: scale, observed range and worst recorded event per hazard

Sources: 6, 7

Hazard	Scale	Recordscount and years	Observed range	Worst recorded event	Most damaging (when different)	How it applies to jurisdictions	Note
Cold/Wind Chill, Extreme Cold/Wind Chill	wind chill	11 records, 1996 to 2026 (11 zone-level)	2 days to 4 days (median 3 days); 8 with a recorded value	4 consecutive days, 2026-01-23 to 2026-01-26, zone-level		Countywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)	crop damage	1 record, 2014 (1 zone-level)		No crop damage reported in 1 record.		Countywide (zone-level records).
Drought	U.S. Drought Monitor scale (D0 to D4)	4 records, 2002 to 2021 (4 zone-level)	30 days to 61 days (median 31 days); 3 with a recorded value	61 days (2 months), 2021-11-01 to 2021-12-31, a run of 2 consecutive Storm Events drought records, zone-level		Countywide (zone-level records).	Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only.
Earthquake	Modified Mercalli (local data)	0					Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail	hail size (inches)	1,176 records, 1955 to 2026	0.5 in to 4.5 in (median 1 in); 1,175 with a recorded value	4.5 in hail, 1983-06-04	Hail, 1995-06-07, $305 property; $25,000,000 crops (1995 dollars)	Event records naming jurisdictions in the plan: Greeley city (102 records), Fort Lupton city (42 records), Nunn town (40 records), Windsor town (35 records), Johnstown town (31 records), Keenesburg town (31 records), Erie town (30 records), Firestone town (30 records), Eaton town (28 records), Hudson town (25 records); and 11 more jurisdictions (see the Excel file).
Excessive Heat, Heat	heat index (in event narratives)	0
Hurricane, Tropical Storm, Tropical Depression	Saffir-Simpson	0					Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records.
Ice Storm	Sperry-Piltz ice scale (local data)	0
Flash Flood, Flood, Lakeshore Flood	damage and flood days (flood depth: FIRM)	69 records, 1996 to 2025 (4 zone-level)		Flood, 2013-09-12, $230,000,000 property; $3,750,000 crops (2013 dollars)		Event records naming jurisdictions in the plan: Windsor town (9 records), Greeley city (4 records), Johnstown town (4 records), Erie town (3 records), Severance town (3 records), Evans city (2 records), Fort Lupton city (2 records), Hudson town (2 records), Keenesburg town (2 records), Mead town (2 records); and 6 more jurisdictions (see the Excel file). Zone-level records (4) apply countywide.	Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flow	none (count and damage only)	0
Lightning	annualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)	27 records, 1996 to 2017		Lightning, 2009-06-05, $0 property; $0 crops (2009 dollars), 1 direct death	Lightning, 1998-09-20, $500,000 property; $0 crops (1998 dollars)	Event records naming jurisdictions in the plan: Greeley city (9 records), Windsor town (3 records), Eaton town (2 records), Evans city (2 records), Hudson town (2 records), Kersey town (2 records), Fort Lupton city (1 record), La Salle town (1 record), Milliken town (1 record).	Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)	wind speed (kt and mph)	170 records, 1996 to 2026 (170 zone-level)	35 kt (40 mph) to 100 kt (115 mph) (median 60 kt (69 mph)); 169 with a recorded value	100 kt (115 mph), measurement type not recorded, High Wind, 1996-12-04; NWS zone COZ038	High Wind, 2001-05-20, $1,400,000 property; crops not reported (zone total, 2001 dollars)	Countywide (zone-level records).
Thunderstorm Wind	wind speed (kt and mph)	342 records, 1956 to 2026	47 kt (54 mph) to 78 kt (90 mph) (median 54 kt (62 mph)); 289 with a recorded value	78 kt (90 mph) estimated gust, Thunderstorm Wind, 2024-06-20	Thunderstorm Wind, 2010-05-26, $190,000 property; crops not reported (2010 dollars)	Event records naming jurisdictions in the plan: Greeley city (20 records), Keenesburg town (16 records), Nunn town (16 records), Fort Lupton city (10 records), Erie town (8 records), Hudson town (7 records), Windsor town (7 records), Pierce town (4 records), Platteville town (4 records), Eaton town (3 records); and 6 more jurisdictions (see the Excel file).
Tornado	Enhanced Fujita (Fujita before Feb 2007)	289 records, 1950 to 2026	F/EF0 to F/EF3 (median F/EF0); 272 with a recorded value	EF3 tornado, 2008-05-22, 24.26 mi within this county, 1,760 yd wide, $147,000,000 property; crops not reported (2008 dollars), 1 direct death, 78 direct injuries		Event records naming jurisdictions in the plan: Fort Lupton city (8 records), Nunn town (8 records), Hudson town (7 records), Platteville town (7 records), Kersey town (6 records), Eaton town (4 records), Keenesburg town (4 records), Dacono city (3 records), Greeley city (3 records), Johnstown town (3 records); and 9 more jurisdictions (see the Excel file).	Before 1996 a tornado is listed once, under the county where it began, with its whole path's rating and length; from 1996 on, each county lists its own segment. Length is not used to rank tornadoes (see Methods).
Volcanic Ash, Volcanic Ashfall	Volcanic Explosivity Index (local data)	0
Wildfire	acres burned (local data)	6 records, 2010 to 2026 (6 zone-level)		Wildfire, 2010-09-12, $1,500,000 property; crops not reported (2010 dollars); NWS zone COZ038		Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet	none in data (snowfall: local data)	176 records, 1996 to 2026 (176 zone-level)		Blizzard, 2003-03-17, $15,500,000 property; crops not reported (2003 dollars); NWS zone COZ038		Countywide (zone-level records).

Where a hazard names more than 10 jurisdictions, the table lists the 10 with the most records; every one is in the Excel file, sheet "B1-c Extent".

In event narratives only (local data needed): wind chill, temperature, heat index, ice thickness, acres burned and snow depth; any physical measure of debris flow, lightning and volcanic ash, volcanic ashfall.

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records from zones that no NWS zone-county file places in this county (mostly before 2020) are not counted here (the Methods page explains the zone matching).

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Supports FEMA checklist item B1-d: previous occurrences

Federal declarations for this county: 16 declarations covering 11 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

Federal disaster declarations for this county

Sources: 1, 2, 3

Declared	Incident began	FEMA number	Type	Title	Mapped hazard	County Public Assistancefederal share obligated, nominal dollars	Notes
2020-03-28	2020-01-20	DR-4498-CO	Major disaster	COVID-19 Pandemic	Non-natural, not counted	$48,022,593.30
2020-03-13	2020-01-20	EM-3436-CO	Emergency	COVID-19	Non-natural, not counted	no Public Assistance recorded	same incident as DR-4498
2013-09-14	2013-09-11	DR-4145-CO	Major disaster	Severe Storms, Flooding, Landslides, and Mudslides	Inland Flooding (primary); also designated: Landslide	$21,356,498.18
2013-09-12	2013-09-11	EM-3365-CO	Emergency	Severe Storms, Flooding, Landslides, and Mudslides	Inland Flooding (primary); also designated: Landslide	no Public Assistance recorded	same incident as DR-4145
2008-05-26	2008-05-22	DR-1762-CO	Major disaster	Severe Storms and Tornadoes	Tornado	PA not declared for this county
2005-09-05	2005-08-29	EM-3224-CO	Emergency	Hurricane Katrina Evacuation	Hurricane: evacuation support, not a local hazard event; not counted	no Public Assistance recorded
2003-04-09	2003-03-17	EM-3185-CO	Emergency	Snow	Winter Weather	$117,420.51
2002-06-19	2002-04-23	DR-1421-CO	Major disaster	Wildfires	Wildfire	PA not declared for this county
2001-05-17	2001-04-11	DR-1374-CO	Major disaster	Severe Winter Storms	Winter Weather	no Public Assistance recorded
1999-05-17	1999-04-29	DR-1276-CO	Major disaster	Co-Flooding 4/30/99	Inland Flooding; Landslide	$257,189.83
1997-08-01	1997-07-28	DR-1186-CO	Major disaster	Severe Storms, Heavy Rain, Flash Floods, Flooding, Mudslides	Inland Flooding (primary); also designated: Landslide	no Public Assistance recorded
1976-08-02	1976-08-02	DR-517-CO	Major disaster	Severe Storms & Flash Flooding	Inland Flooding	no Public Assistance recorded
1973-05-23	1973-05-23	DR-385-CO	Major disaster	Heavy Rains, Snowmelt and Flooding	Inland Flooding	no Public Assistance recorded
1973-05-08	1973-05-08	DR-379-CO	Major disaster	Dam Failure	Other, not an NRI hazard; not counted	no Public Assistance recorded
1969-05-19	1969-05-19	DR-261-CO	Major disaster	Severe Storms & Flooding	Inland Flooding	no Public Assistance recorded
1965-06-19	1965-06-19	DR-200-CO	Major disaster	Tornadoes, Severe Storms & Flooding	Tornado (primary); also designated: Inland Flooding	no Public Assistance recorded

County Public Assistance: applicants the FEMA record places in this county, including any state agencies FEMA files there; statewide rows are listed on the state page; federal share obligated, nominal dollars.

Statewide declarations

Source: 2

Declared	Incident began	FEMA number	Type	Title	Mapped hazard
1956-06-12	1956-06-12	DR-59-CO	Major disaster	Flood	Inland Flooding
1955-05-25	1955-05-25	DR-33-CO	Major disaster	Flood	Inland Flooding

FEMA recorded these with designated area Statewide and no county, so they are listed on every county page in the state and not counted with county rows. Local data needed: whether each one affected this county.

10 Fire Management declarations (1978-09-12 to 2016-07-10) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

Public Assistance filed under this county for declarations that do not list it: 4 rows, $225,946.30

Sources: 2, 3

FEMA number	Declared	Title	Applicant	PA obligatedfederal share obligated, nominal dollars
DR-4634-CO	2021-12-31	Wildfires and Straight-Line Winds	Mountain View Fire Protection District	$34,673.82
DR-4229-CO	2015-07-16	Severe Storms, Tornadoes, Flooding, Landslides, and Mudslides	BRIGHTON DITCH COMPANY	$178,045.55
EM-3270-CO	2007-01-07	Snow	WINDSOR, TOWN OF (2)	$8,427.31
EM-3270-CO	2007-01-07	Snow	Erie, Town of	$4,799.62

FEMA's Public Assistance summaries file these applicants under this county, but FEMA's declaration rows for these disasters do not designate it (an electric cooperative or district serving several counties, for example). Not in any declaration row above and not counted.

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

Hazard	Storm Events records, all years on file(years in the Period column)	Since plan approvalrecords	In the 12 months before plan approvalrecords	Last 5 yearsrecords	Declared incidents, all yearsseparate disasters	Period	Statement
Cold Wave	12	8	0	8	0	1996 to 2026-06-30	Includes 1 Frost/Freeze record.
Drought	4	0	2	2	0	1996 to 2026-06-30
Earthquake	0	0	0	0	0		Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail	1,176	162	22	162	0	1955 to 2026-06-30
Heat Wave	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Hurricane	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Inland Flooding	69	11	5	11	7	1996 to 2026-06-30
Landslide	0	0	0	0	3	1996 to 2026-06-30	No Storm Events records of this type; 3 federal declared incidents (see declarations table)
Lightning	27	0	0	0	0	1996 to 2026-06-30
Strong Wind	512	95	6	96	0	1955 to 2026-06-30	Includes 164 High Wind and 6 Strong Wind records.
Tornado	289	10	1	10	2	1950 to 2026-06-30
Volcanic Activity	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire	6	5	0	5	1	1996 to 2026-06-30
Winter Weather	176	38	6	38	2	1996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

Date	Event type	Magnitude or extent	Damagenominal dollars	Deaths, injuriesdirect only	Location	Flags	Why listed
2026-01-23	Cold/Wind Chill		damage not reported	0, 0	NWS zone COZ042 (NE WELD COUNTY), zone-level	new since last plan; within last 5 years	B1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2024-06-20	Thunderstorm Wind	78 kt (90 mph) estimated gust	damage not reported	0, 0	LA SALLE	new since last plan; within last 5 years	B1-c worst recorded: Thunderstorm Wind
2023-06-30	Flood		$0 property; $0 crops (2023 dollars)	1, 0	PROSPECT VALLEY	new since last plan; within last 5 years	deaths or injuries recorded
2021-11-01	Drought		damage not reported	0, 0	NWS zone COZ038 (LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY), zone-level	in the 12 months before plan approval; within last 5 years	B1-c worst recorded: Drought
2013-09-12	Flood		$230,000,000 property; $3,750,000 crops (2013 dollars)	0, 0	WARREN to KOENIG		B1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2010-09-12	Wildfire		$1,500,000 property; crops not reported (zone total, 2010 dollars)	0, 0	NWS zone COZ038 (LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY), zone-level		B1-c worst recorded: Wildfire
2009-06-05	Lightning		$0 property; $0 crops (2009 dollars)	1, 0	EVANS		deaths or injuries recorded
2008-05-22	Tornado	EF3, 24.26 mi within this county, 1,760 yd wide	$147,000,000 property; crops not reported (2008 dollars)	1, 78	PLATTEVILLE ARPT to SEVERANCE		deaths or injuries recorded
2003-03-17	Blizzard		$15,500,000 property; crops not reported (zone total, 2003 dollars)	0, 0	NWS zone COZ038 (LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY), zone-level		B1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
1996-12-04	High Wind	100 kt (115 mph), measurement type not recorded	property not reported; $0 crops (zone total, 1996 dollars)	0, 0	NWS zone COZ038 (LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY), zone-level		B1-c worst recorded: High Wind and Strong Wind
1995-06-07	Hail	0.5 in	$305 property; $25,000,000 crops (1995 dollars)	0, 0	Gilcrest		B1-c most damaging: Hail
1983-06-04	Hail	4.5 in	damage not recorded (pre-1996 record)	0, 0	location not recorded		B1-c worst recorded: Hail

The full list is in the Excel file, sheet "B1-d Storm Events history" (2,271 rows).

Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.

Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).

Tribal and special-area declarations in this state are listed on the state page.

Supports FEMA checklist item B1-e: probability of future events

Probability: FEMA annualized frequency and descriptor per hazard

Sources: 5, 6

Hazard	FEMA annualized frequency (modeled)unit per row	Unit	In plain terms	Descriptor	Descriptor basis	NRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)	NRI period	Location	Note
Cold Wave	1.84	event-days per year	about 1.84 days per year	Likely	Storm Events event-days in 6 of 30 years, 1996 to 2025 (20%)	34.9	2005-11-12 to 2024-11-12 (19 years)	countywide
Drought	38.5	event-days per year	about 38.5 days per year	Likely	Storm Events event-days in 3 of 30 years, 1996 to 2025 (10%)	1,526	2000 to 2025 (25.25 years; D3 and D4 only)	countywide
Earthquake	0.000764	annual probability at a location	chance a given location in the county has at least minor-damage shaking in a year: 0.0764%			not shown	modeled	see B1-f	No descriptor (Storm Events does not record earthquakes).
Hail	6.7	events per year	about 6.7 per year	Highly likely	FEMA annualized frequency (modeled)	254.7 (modeled)	1986 to 2023 (38 years)	countywide
Heat Wave	0.619	event-days per year	about 0.619 days per year		Storm Events event-days in 0 of 30 years, 1996 to 2025 (0%)	8.28	2005-11-12 to 2024-11-12 (19 years)	countywide	No Storm Events heat wave record, 1996 to 2025
Hurricane		events per year					1851 to 2024 (Atlantic)	see B1-f	Not Applicable in NRI for this county; no descriptor.
Ice Storm	0.0251	event-days per year	about 0.0251 days per year		Storm Events event-days in 0 of 30 years, 1996 to 2025 (0%)	2	1946-12-31 to 2014-02-12 (67 years)	countywide	No Storm Events ice storm record, 1996 to 2025
Inland Flooding	1.89	event-days per year	about 1.89 days per year	Likely	Storm Events event-days in 24 of 30 years, 1996 to 2025 (80%)	53	1996 to 2023 (28 years)	see B1-f
Landslide	0.543	events per year (modeled)	about 0.54 per year	Likely	FEMA annualized frequency (modeled)	not shown	modeled	see B1-f
Lightning	51.2	days per year with a strike	about 51.2 days per year	Highly likely	FEMA annualized frequency (modeled)	not shown	1995 to 2023 (29 years; CONUS)	countywide
Strong Wind	1.4	events per year	about 1.4 per year	Highly likely	FEMA annualized frequency (modeled)	54	1986 to 2023 (38 years)	countywide
Tornado	4.2	events per year	about 4.2 per year	Highly likely	FEMA annualized frequency (modeled)	not shown	1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)	see B1-f
Volcanic Activity	0.0001	annual probability	about 1 in 10,000 years	Unlikely	FEMA annualized frequency (modeled)	not shown	modeled	see B1-f
Wildfire	0.0014	annual probability at a location	chance a given location in the county burns in a year: 0.14%	Likely	Storm Events records in 3 of 30 years, 1996 to 2025 (10%)	not shown	modeled	see B1-f
Winter Weather	10.3	event-days per year	about 10.3 days per year	Highly likely	Storm Events event-days in 30 of 30 years, 1996 to 2025 (100%)	195	2005-11-12 to 2024-11-12 (19 years)	countywide

FEMA annualized frequency (modeled) is the National Risk Index v1.20 (December 2025) estimate of how often a hazard affects this county in a year; it is not recorded events divided by years, and its unit differs by hazard (events, event-days, or days with a lightning strike per year). For earthquake, wildfire, coastal flooding and tsunami the value is the chance (or number of events) at a location in the county, not across the county, so no "1 in N years" is given and the descriptor comes from Storm Events where it has a record (none for earthquake). The Methods page gives each hazard's method, from FEMA's National Risk Index Technical Documentation v1.20.

Where NRI gives event-days, the descriptor comes from the share of years with a Storm Events record; NRI's source records more events, so the two differ.

Descriptor scale used in this packet (defined per unit)

Sources: 5, 6

Unit	Descriptor	Definition
events per year	Highly likely	1 or more per year
events per year	Likely	about once in 1 to 10 years
events per year	Possible	about once in 10 to 100 years
events per year	Unlikely	less than once in 100 years
annual probability	Likely	10% to under 100% chance in a given year
annual probability	Possible	1% to under 10% chance in a given year
annual probability	Unlikely	under 1% chance in a given year
event-days (share of years)	Highly likely	event-days recorded in 90% or more of years
event-days (share of years)	Likely	event-days recorded in 10% to under 90% of years
event-days (share of years)	Possible	event-days recorded in some years but under 10% of years
lightning strike-days	Highly likely	cloud-to-ground strikes on 1 or more days per year

Intensity bands: historical frequency (Storm Events)

Source: 6

Hazard	Band	Years	Eventscounty-coded records	Years in period	Events per yearevents / years
Hail	1.00-1.99 in	1996 to 2025	622	30	20.7
Hail	2.00 in+	1996 to 2025	87	30	2.9
Thunderstorm Wind (counted as NRI Strong Wind)	50-64 kt	1996 to 2025	194	30	6.47
Thunderstorm Wind (counted as NRI Strong Wind)	65 kt+	1996 to 2025	33	30	1.1
Thunderstorm Wind (counted as NRI Strong Wind)	unmeasured or below 50 kt	1996 to 2025	6	30	0.2
Tornado	EF0-1	1996 to 2025	119	30	3.97
Tornado	EF2-3	1996 to 2025	4	30	0.133
Tornado	EF4-5	1996 to 2025	0	30	0
Tornado	unrated (EFU)	1996 to 2025	5	30	0.167

The bands show how often events of each severity were recorded in this county, to profile how severe events have been (FEMA's probability item asks for the range of intensities).

Hail smaller than 1 inch is not counted: on 2010-01-05 the National Weather Service raised its severe-hail threshold from 3/4 inch to 1 inch, so smaller reports became less common after 2009 (NWS Service Change Notice 09-52). NRI hail frequency uses a 0.75 inch threshold.

Optional: future conditions. Not a required item in the 2025 FEMA Local Mitigation Planning Policy Guide; some states ask for it. The federal Climate Mapping for Resilience and Adaptation (CMRA) site gives county exposure to future climate conditions (https://resilience.climate.gov/).

Supports FEMA checklist item B1-f: hazards that vary across jurisdictions

Range of census tract risk within the county

Source: 5

Hazard	Tractsrated of all	NRI risk score, 0 to 100			Tracts by rating
Hazard	Tractsrated of all	Min	Median	Max	Tracts by rating
Cold Wave	83 of 83	31.9	80.5	99.2	Very High 2, Relatively High 47, Relatively Moderate 29, Relatively Low 5
Drought	66 of 83	66.9	73.4	90.1	Relatively Low 13, Very Low 53, No Rating 17
Earthquake	83 of 83	9.7	38.6	66.7	Relatively Low 35, Very Low 48
Hail	83 of 83	65.5	90.5	99.9	Very High 6, Relatively High 42, Relatively Moderate 34, Relatively Low 1
Heat Wave	83 of 83	2.2	10.1	34.1	Relatively Low 15, Very Low 68
Hurricane	0 of 83				Not Applicable 83
Ice Storm	83 of 83	4.6	51.0	78.7	Relatively Moderate 6, Relatively Low 56, Very Low 21
Inland Flooding	83 of 83	0.8	22.1	97.7	Very High 1, Relatively High 5, Relatively Moderate 19, Relatively Low 28, Very Low 30
Landslide	82 of 83	9.4	28.2	89.5	Relatively Low 1, Very Low 81, No Rating 1
Lightning	83 of 83	10.2	66.4	93.8	Relatively High 14, Relatively Moderate 43, Relatively Low 22, Very Low 4
Strong Wind	83 of 83	19.8	75.7	93.8	Relatively High 19, Relatively Moderate 50, Relatively Low 13, Very Low 1
Tornado	83 of 83	30.1	68.6	92.1	Relatively High 31, Relatively Moderate 38, Relatively Low 14
Volcanic Activity	66 of 83	40.1	48.1	75.8	Very Low 66, No Rating 17
Wildfire	79 of 83	18.7	73.5	97.9	Relatively High 1, Relatively Moderate 5, Relatively Low 42, Very Low 31, No Rating 4
Winter Weather	83 of 83	28.9	76.2	93.3	Relatively High 35, Relatively Moderate 42, Relatively Low 6

Drought: Agriculture is all of NRI's expected annual loss for this hazard in the county, so the tract range mostly reflects where crop and livestock value is.

Rated tracts only: No Rating (score 0.0), Not Applicable and Insufficient Data tracts are counted but not used for the minimum, median and maximum.

The score ranks a tract against all U.S. tracts (100 = highest). The rating is FEMA's category for the tract's risk value, computed differently, so the two can disagree.

Frequency data for cold wave, drought, hail, heat wave, ice storm, lightning, strong wind and winter weather are county-wide or coarse (49 km grid or NWS zone), the same for every jurisdiction; the tract range mostly reflects where buildings and people are (crop and livestock value where a line above names agriculture).

Each jurisdiction (starting figures from federal data)

Sources: 1, 3, 4, 6

Jurisdiction	Type	Plan status	Repetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definition	Public Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollars	Event records naming this placeall years; since its plan	Notes
Weld County	County	Approved, expires 2026-12-21	FMA RL 0, SRL 1; any 6	$6,559,924.20	0 total; 0 since its plan	Includes $476,949.36 for declarations not counted as hazard incidents (DR-4498-CO).
Ault town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	13 total; 1 since its plan
Dacono city	City	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$98,568.65	15 total; 2 since its plan
Eaton town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	38 total; 4 since its plan
Erie town	Town	Approved, expires 2027-06-21	FMA RL 0, SRL 0; any 1	$1,026,542.05	42 total; 21 since its plan	Also approved under plan 107685 (Weld County, CO Hazard Mitigation Plan 2021, expires 2026-12-21). FEMA's plan status map shows one plan per jurisdiction and may show one of these; this packet uses the approved plan that expires last. Whole community, including the part in Boulder County; none of its repeat-flood properties are in this county.
Evans city	City	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$7,344,715.65	24 total; 5 since its plan
Firestone town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$83,047.66	35 total; 7 since its plan
Fort Lupton city	City	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$380,614.10	63 total; 7 since its plan
Frederick town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$158,548.65	18 total; 5 since its plan
Greeley city	City	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 1	$607,280.44	138 total; 12 since its plan	Includes $49,222.52 for declarations not counted as hazard incidents (DR-4498-CO).
Hudson town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	43 total; 2 since its plan
Johnstown town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$78,968.08	41 total; 17 since its plan
Keenesburg town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	53 total; 2 since its plan
Kersey town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	17 total; 0 since its plan
La Salle town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$218,336.77	21 total; 3 since its plan
Mead town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	19 total; 2 since its plan
Milliken town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$221,569.28	4 total; 0 since its plan
Nunn town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	65 total; 8 since its plan
Pierce town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	22 total; 2 since its plan
Platteville town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$2,029.63	26 total; 4 since its plan
Severance town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	25 total; 6 since its plan
Windsor town	Town	Approved, expires 2026-12-21	FMA RL 0, SRL 0; any 0	$23,228.82	56 total; 6 since its plan

Repetitive-loss counts are for whole NFIP communities, which can extend beyond this county (see the note in B2-c).

County Public Assistance in B1-d also includes applicants filed under the county that are not jurisdictions in this plan (for example state agencies, special districts and nonprofits), so the jurisdiction rows add up to less.

Supports FEMA checklist items B2-a and B2-b: vulnerability and potential impacts

Local data needed

The table below gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.

Critical facilities and lifelines per hazard
A problem statement per jurisdiction per hazard
Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
Future assets

County-level starter: exposure, expected annual loss and damage since the plan

Sources: 1, 2, 3, 5, 6, 7

Hazard	Building exposuremodeled dollars	Agriculture exposuremodeled dollars	Population exposedpeople	EAL buildingsmodeled dollars per year	EAL agriculturemodeled dollars per year	Cost of expected deaths and injuriesFEMA's dollar value per year, not property damage	EAL as % of exposurebuildings; agriculture where noted	Storm Events damage since 2021-12-22county-coded records, property plus crops, nominal dollars	Zone-level damage since planproperty plus crops, reported for the zone	Note
Cold Wave	$57,729,880,139	$2,635,947,930	328,800	$38,440	$2,728,245	$16,158,310	under 0.0001%		$0
Drought	n/a	$302,427,095	n/a	n/a	$74,693	n/a	0.0247% (agriculture)			NRI has no building exposure for this hazard; agriculture shown
Earthquake	$100,988,682,072	n/a	328,981	$1,545,933	n/a	$277,952	0.00153%
Hail	$57,729,880,139	$2,635,947,930	328,800	$7,681,452	$5,277,883	$1,145,920	0.0133%	$0
Heat Wave	$57,729,880,139	$2,635,947,930	328,800	$151	$48,525	$726,292	under 0.0001%
Hurricane										Not Applicable in NRI for this county
Ice Storm	$57,729,537,044	n/a	328,800	$6,763	n/a	$475,191	under 0.0001%
Inland Flooding	$57,711,802,619	$264,703,065	4,608	$44,082,520	$132,318	$235,180	n/a (see note)	$4,700,000		NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b.
Landslide	$182,691,938	n/a	900	$939	n/a	$21	0.000514%
Lightning	$57,729,880,139	n/a	328,800	$85,293	n/a	$1,689,792	0.000148%
Strong Wind	$57,729,880,139	$2,635,947,930	328,800	$851,201	$123,710	$3,150,353	0.00147%	$0	$0
Tornado	$57,729,880,139	$2,635,947,930	328,800	$10,126,109	$254,733	$5,694,337	0.0175%	$0
Volcanic Activity	$57,729,880,139	n/a	328,800	under $1	n/a	$53	under 0.0001%
Wildfire	$4,819,633,846	$1,271,643,189	45,711	$1,217,507	$6,157	$96,811	0.0253%		$750,000
Winter Weather	$57,729,880,139	$2,635,947,930	328,800	$221,269	$581	$540,255	0.000383%		$0

Totals since 2021-12-22 (Storm Events through 2026-06-30): 240 county-coded records, 40 with a damage value recorded (including $0), $4,700,000; 89 zone-level records, 29 with a damage value recorded (including $0), $750,000 reported for the zone; Public Assistance: no counted declaration since the plan.

FEMA does not split Public Assistance by hazard. A declaration mapped to several hazards is listed under each of them with its full amount, so the per-hazard column does not add up to the total; the unit total counts each declaration once.

NRI computes earthquake exposure on its own basis, so it exceeds the county building value in B2-a.

Supports FEMA checklist item B2-a: vulnerability (county context)

County context

Source: 5

Measure	Value
Population	328,800
Building value (total, not at risk)	$57,729,880,139
Agriculture value (total, not at risk)	$2,635,947,930
NRI risk rating (all hazards)	Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards	$74,504,423
Expected annual loss, population equivalence, all hazards (NRI values each statistical life at $13.7M; a modeled value of expected deaths and injuries, not property damage)	$30,190,468
Social vulnerability rating	Very Low
Community resilience rating	Relatively Moderate
NRI version	December 2025

FEMA's all-hazard expected annual loss adds buildings, agriculture and population equivalence; this table gives the property part and the population-equivalence part as separate rows.

Social vulnerability: higher means people are more likely to be harmed and slower to recover. Community resilience: lower means the community is less able to recover. High social vulnerability and low resilience both raise the NRI risk rating.

Supports FEMA checklist item B2-c: repetitive loss properties

Repetitive loss in this county, both definitions

Sources: 1, 4

Definition	Properties	Severe repetitive loss	Properties
Repetitive loss, FMA definition (44 CFR 77.2)	0	Severe repetitive loss, FMA definition (44 CFR 77.2)	1
Repetitive loss, NFIP insurance definition	7	Severe repetitive loss, NFIP insurance definition	1

The state NFIP coordinator's list, the source FEMA's Handbook names, often uses the NFIP insurance definition (second row).

Repeat-flood properties: county and state-level rows

Sources: 1, 4

Scope	SRL, FMAproperties	RL, NFIPproperties	SRL, NFIPproperties	Any categoryproperties	Currently insuredproperties
County total	1	7	1	7	1
of which: Greeley city	0	1	0	1	0
of which: Weld County (unincorporated area)	1	6	1	6	1
Statewide, no county in FEMA's file	0	8	0	8	0

The statewide row counts properties FEMA's file gives with no county in this state; they are listed for reference and are not in this county's counts.

Repeat-flood properties by jurisdiction in the plan (NFIP community)

Sources: 1, 4

Jurisdiction	NFIP community ID	SRL, FMAproperties	RL, NFIPproperties	SRL, NFIPproperties	Any categoryproperties	Currently insuredproperties	Note
Weld County	080266	1	6	1	6	1
Ault town	080179	0	0	0	0	0
Dacono city	080236	0	0	0	0	0
Eaton town	080180	0	0	0	0	0
Erie town	080181	0	1	0	1	0	Whole community, including the part in Boulder County; none of its repeat-flood properties are in this county.
Evans city	080182	0	0	0	0	0
Firestone town	080241	0	0	0	0	0
Fort Lupton city	080183	0	0	0	0	0
Frederick town	080244	0	0	0	0	0
Greeley city	080184	0	1	0	1	0
Hudson town	080249	0	0	0	0	0
Johnstown town	080250	0	0	0	0	0
Keenesburg town	080251	0	0	0	0	0
Kersey town	080185	0	0	0	0	0
La Salle town	080186	0	0	0	0	0
Mead town	080218	0	0	0	0	0
Milliken town	080187	0	0	0	0	0
Nunn town	080188	0	0	0	0	0
Pierce town	080189	0	0	0	0	0
Platteville town	080190	0	0	0	0	0
Severance town	080317	0	0	0	0	0
Windsor town	080264	0	0	0	0	0

Counts by occupancy group for each jurisdiction are in the Excel file, sheet "B2-c Jurisdictions".

Jurisdiction rows are whole NFIP communities and need not add up to the county total: a community that extends into another county is counted in full on each jurisdiction row, while the county table counts only its part in this county.

County repeat-flood properties by occupancy group

Sources: 1, 4

Occupancy group	SRL, FMAproperties	RL, NFIPproperties	SRL, NFIPproperties	Any categoryproperties	Currently insuredproperties
single-family residential	1	7	1	7	1
2 to 4 unit residential	0	0	0	0	0
other residential	0	0	0	0	0
non-residential	0	0	0	0	0
not reported	0	0	0	0	0

FEMA's occupancy groups have no institutional class; institutional properties are counted in non-residential or other residential in the table by occupancy group.

FMA RL and FMA SRL are the Flood Mitigation Assistance definitions (44 CFR 77.2), the ones the FEMA Local Mitigation Planning Policy Guide cites. NFIP repetitive loss (the FEMA insurance definition) is 2 or more claims over $1,000 in 10 years, and a property can leave that group once it is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured. The Methods page gives the OpenFEMA field details.

Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (FEMA's data date 2026-08-02; file version 2026-08-04). No property is identified. County assignment is FEMA's geocode.

In this county 0 properties are FMA repetitive loss but not NFIP repetitive loss, and 7 properties are NFIP repetitive loss but not FMA repetitive loss.

Exact counts; no count suppression.

Sources

Tables cite these sources by number. The full list, for the plan's bibliography (FEMA review item A4-a):

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-30, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)
NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-30, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/
NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-30, https://www.weather.gov/gis/ZoneCounty
U.S. Census Bureau, Census 2024 Gazetteer, 2020 place by county, CT county-to-cousub crosswalk, version 2024-gazetteer, pulled 2026-09-30, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_counties_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_cousubs_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_place_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_unsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_elsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_scsd_national.zip, https://www2.census.gov/geo/docs/reference/codes2020/national_place_by_county2020.txt, https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.xlsx (used to match place names and codes; no table prints its values)

What this packet is and what the plan adds

This packet is the federal data for the plan's risk assessment (the summary on page 1 says how it is organized); the plan and FEMA's review decide whether each item is met.

The plan adds what only the community has: local data on assets, critical facilities, development and each jurisdiction's impacts; local hazard history, including state-declared emergencies; the mitigation strategy; and adoption.

How the federal data are built: National Risk Index values are FEMA's model, not counts of events. Storm Events is more complete from 1996; zone-level records are placed by forecast zone, not by location in the county. Public Assistance for a jurisdiction is matched by applicant name. The Methods page gives every rule and the known edge cases.

OpenFEMA disclaimer

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Reuse, citation and corrections

Reuse and citation: Hazard Plain text and tables are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/); credit Hazard Plain and the release. The underlying federal data are public domain; OpenFEMA data are also subject to the OpenFEMA terms and conditions.

Cite this: Hazard Plain (2026). Weld County, CO: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 08123). Automated baseline. https://hazardplain.org/co/08123/ Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.

Corrections: to report an error, name the packet, the table and what your records show. Contact: [email protected]