Alcona County, MI: risk-assessment baseline packet, release 2026-10

Summary

Plan status as of 2026-09-30: Approved, expires 2027-03-20. Plan: Alcona County (FEMA plan 107526), approved 2022-03-21.

Since the plan was approved on 2022-03-21: 2 new hazard declarations (2 incidents): DR-4880-MI (Severe Winter Storm), DR-4925-MI (Severe Storms, Tornadoes, and Flooding).

NOAA Storm Events records since that date: 16 records (data through 2026-06-30).

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($3,573,959 a year), Cold Wave ($553,267) and Lightning ($215,506).

Repetitive-loss flood properties now: FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 1.

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; 26001 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 2027-03-20
Plan:: Alcona County (FEMA plan 107526)
Approved:: 2022-03-21
Days to expiry:: 171
Update underway:: none recorded in FEMA's plan tracker

What changed since your last plan (approved 2022-03-21)

New federal declarations:: 2 new hazard declarations (2 incidents): DR-4880-MI (Severe Winter Storm), DR-4925-MI (Severe Storms, Tornadoes, and Flooding)
Storm Events records since approval:: 16 records (data through 2026-06-30)
Repetitive loss now:: FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 1
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: 14 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	Update underway	Notes
Alcona County	County	Approved, expires 2027-03-20	Alcona County (FEMA plan 107526)	2022-03-21	2027-03-20	171
Harrisville city	City	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Lincoln village	Village	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Alcona township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Caledonia township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Curtis township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Greenbush township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Gustin township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Harrisville township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Hawes township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Haynes township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Mikado township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Millen township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.
Mitchell township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	Alcona County (FEMA plan 107526), pending adoption here	2022-03-21 by FEMA; not yet adopted here	2027-03-20 once adopted		FEMA tracker shows a plan approvable pending adoption	Not yet eligible: adopt the approved plan.

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	Storm Events coverage note
1	Inland Flooding	Relatively Low	Very Low	$3,573,447	$424	$88	$3,573,959	6
2	Cold Wave	Relatively Low	Relatively Low	$160	$12,987	$540,120	$553,267	8
3	Lightning	Relatively Moderate	Relatively Low	$3,807	n/a	$211,699	$215,506	0	No recorded events in Storm Events since 1996 (data through 2026-06-30).
4	Tornado	Very Low	Very Low	$97,955	$73	$79,389	$177,416	3
5	Strong Wind	Very Low	Very Low	$34,123	$124	$50,046	$84,293	49	Includes 5 High Wind records (a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition).
6	Hail	Very Low	Very Low	$61,908	$1,971	$4,370	$68,249	49
7	Wildfire	Very Low	Very Low	$19,010	$6	$1,084	$20,100	0	No recorded events in Storm Events since 1996 (data through 2026-06-30).
8	Heat Wave	Very Low	Very Low	$294	under $1	$15,661	$15,954	2
9	Hurricane	Very Low	Very Low	$8,770	$718	$13	$9,500	0	No recorded events in Storm Events since 1996 (data through 2026-06-30).
10	Earthquake	Very Low	Very Low	$4,104	n/a	$877	$4,981		Storm Events does not record earthquakes.
11	Ice Storm	Very Low	Very Low	$3,709	n/a	$517	$4,226	4
12	Coastal Flooding	Very Low	Very Low	$3,095	n/a	$198	$3,293	0	No recorded events in Storm Events since 1996 (data through 2026-06-30).
13	Winter Weather	Very Low	Very Low	$377	$67	$2,026	$2,470	56
14	Landslide	Very Low	Very Low	$81	n/a	$1,142	$1,223	0	No recorded events in Storm Events since 1996 (data through 2026-06-30).
15	Drought	No Rating	No Expected Annual Losses	n/a	$0	n/a	$0	0	Declared 1 time; no Storm Events record of this type.
	Tsunami	Insufficient Data	Insufficient Data	n/a	n/a	n/a	n/a	0	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 lightning, wildfire, landslide and tsunami 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 and volcanic activity. 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.

Coastal Flooding and 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 9704 (Very Low, 10.4); tract 9705 (Very Low, 7.2); tract 9706 (Very Low, 6.7)
Hurricane	tract 9704 (Very Low, 44.5); tract 9701 (Very Low, 43.3); tract 1 (Very Low, 41.2)
Landslide	tract 9705 (Relatively Low, 93.3); tract 9701 (Relatively Low, 84.6); tract 9704 (Relatively Low, 82.7)
Tornado	tract 9705 (Relatively Low, 51.7); tract 9704 (Relatively Low, 47.5); tract 9701 (Relatively Low, 44.6)
Tsunami	no tract has a National Risk Index rating for this hazard
Wildfire	tract 9705 (Relatively Low, 87.4); tract 9704 (Relatively Low, 78.8); tract 9701 (Relatively Low, 74.8)

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 9704 is Census Tract 9704). 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
Coastal Flood, Storm Surge/Tide	none in data (flood depth: FIRM)	0					Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chill	wind chill	8 records, 2007 to 2026 (8 zone-level)	2 days to 3 days (median 2.5 days); 6 with a recorded value	3 consecutive days, 2026-02-06 to 2026-02-08, zone-level		Countywide (zone-level records).	Wind chill: in event narratives only (local data needed).
Frost/Freeze (outside NRI's Cold Wave definition)	crop damage	0					Temperature: in event narratives only (local data needed).
Drought	U.S. Drought Monitor scale (D0 to D4)	0					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)	57 records, 1955 to 2025	0.75 in to 2 in (median 0.75 in); 57 with a recorded value	2 in hail, 2016-10-17; same size also recorded on 2011-08-21	Hail, 2018-07-16, $0 property; $500 crops (2018 dollars)	Event records naming jurisdictions in the plan: Harrisville city (7 records), Harrisville township (7 records), Mikado township (7 records), Lincoln village (6 records), Greenbush township (2 records).
Excessive Heat, Heat	heat index (in event narratives)	2 records, 2001 to 2018 (2 zone-level)	1 day to 9 days (median 5 days); 2 with a recorded value	9 consecutive days, 2001-08-01 to 2001-08-09, zone-level		Countywide (zone-level records).	Heat index: in event narratives only (local data needed).
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)	4 records, 2001 to 2025 (4 zone-level)		No damage reported in 4 records.		Countywide (zone-level records).	Ice thickness: in event narratives only (local data needed).
Flash Flood, Flood, Lakeshore Flood	damage and flood days (flood depth: FIRM)	6 records, 2008 to 2019 (1 zone-level)		Flash Flood, 2008-06-22, $100,000 property; $0 crops (2008 dollars)		Event records naming jurisdictions in the plan: Lincoln village (1 record), Mikado township (1 record). Zone-level records (1) 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					Physical measure: in event narratives only (local data needed).
Lightning	annualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)	0					Storm Events lists lightning with damage or casualties; physical measure in event narratives only (local data needed).
High Wind and Strong Wind (outside NRI's Strong Wind definition)	wind speed (kt and mph)	5 records, 1998 to 2021 (5 zone-level)	50 kt (58 mph) to 55 kt (63 mph) (median 52 kt (60 mph)); 5 with a recorded value	55 kt (63 mph) estimated gust, High Wind, 2010-10-27; same speed and measurement basis also recorded on 2003-11-13; NWS zone MIZ030	High Wind, 2021-12-16, $10,000 property; $0 crops, reported for the zone (2021 dollars)	Countywide (zone-level records).
Thunderstorm Wind	wind speed (kt and mph)	63 records, 1962 to 2025	43 kt (49 mph) to 80 kt (92 mph) (median 52 kt (60 mph)); 51 with a recorded value	80 kt (92 mph), measurement type not recorded, Thunderstorm Wind, 1998-05-19	Thunderstorm Wind, 2025-08-12, $25,000 property; $0 crops (2025 dollars)	Event records naming jurisdictions in the plan: Harrisville city (7 records), Harrisville township (7 records), Mikado township (5 records), Greenbush township (2 records), Lincoln village (2 records).
Tornado	Enhanced Fujita (Fujita before Feb 2007)	12 records, 1953 to 2008	F/EF0 to F/EF3 (median F/EF1); 12 with a recorded value	F3 tornado, 1991-03-27, 23 mi path length (whole path, pre-1996), 100 yd wide, $2,500,000 property; crops not recorded (1991 dollars); same rating, casualties and property damage also recorded on 1991-03-27		No event record names a jurisdiction in the plan.	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).
Tsunami	none (count and damage only)	0					Physical measure: in event narratives only (local data needed).
Wildfire	acres burned (local data)	0					Acres burned: in event narratives only (local data needed).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet	none in data (snowfall: local data)	56 records, 1997 to 2026 (56 zone-level)		Heavy Snow, 2005-04-24, $3,000 property; crops not reported (2005 dollars); NWS zone MIZ030		Countywide (zone-level records).	Snow depth: in event narratives only (local data needed).

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records whose zone 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: 9 declarations covering 6 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	Flags	Notes
2026-06-30	2026-04-10	DR-4925-MI	Major disaster	Severe Storms, Tornadoes, and Flooding	Inland Flooding (primary); also designated: Tornado	no Public Assistance recorded	new since last plan; within last 5 years
2025-07-22	2025-03-28	DR-4880-MI	Major disaster	Severe Winter Storm	Ice Storm (primary); also designated: Winter Weather	$305,095.31	new since last plan; within last 5 years
2020-03-27	2020-01-20	DR-4494-MI	Major disaster	COVID-19 Pandemic	Non-natural, not counted	no Public Assistance recorded
2020-03-13	2020-01-20	EM-3455-MI	Emergency	COVID-19	Non-natural, not counted	no Public Assistance recorded		same incident as DR-4494
2005-09-07	2005-08-29	EM-3225-MI	Emergency	Hurricane Katrina Evacuation	Hurricane: evacuation support, not a local hazard event; not counted	no Public Assistance recorded
1999-01-27	1999-01-02	EM-3137-MI	Emergency	Mi - Severe Weather 1/2 /99	Winter Weather	$6,401.92
1985-09-18	1985-09-05	DR-744-MI	Major disaster	Severe Storms and Flooding	Inland Flooding	no Public Assistance recorded
1978-01-27	1978-01-27	EM-3057-MI	Emergency	Blizzards & Snowstorms	Winter Weather	no Public Assistance recorded
1977-03-02	1977-03-02	EM-3035-MI	Emergency	Drought	Drought	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
1956-04-05	1956-04-05	DR-53-MI	Major disaster	Tornado	Tornado
1953-06-09	1953-06-09	DR-6-MI	Major disaster	Tornado	Tornado
1953-06-02	1953-06-02	DR-4-MI	Major disaster	Tornado	Tornado

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.

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	Declared since approvalseparate disasters	Period	Statement
Coastal Flooding	0	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Cold Wave	8	5	0	5	0	0	1996 to 2026-06-30
Drought	0	0	0	0	1	0	1996 to 2026-06-30	No Storm Events records of this type; 1 federal declared incident (see declarations table)
Earthquake	0	0	0	0	0	0		Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail	57	3	0	3	0	0	1955 to 2026-06-30
Heat Wave	2	0	0	0	0	0	1996 to 2026-06-30
Hurricane	0	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm	4	1	0	1	1	1	1996 to 2026-06-30
Inland Flooding	6	0	0	0	2	1	1996 to 2026-06-30
Landslide	0	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning	0	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Strong Wind	68	1	2	2	0	0	1955 to 2026-06-30	Includes 5 High Wind records.
Tornado	12	0	0	0	1	1	1950 to 2026-06-30
Tsunami	0	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire	0	0	0	0	0	0	1996 to 2026-06-30	No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Winter Weather	56	6	0	6	3	1	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
2026-02-06	Cold/Wind Chill		damage not reported	0, 0	NWS zone MIZ030 (ALCONA), zone-level	new since last plan; within last 5 years	B1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2025-08-12	Thunderstorm Wind	43 kt (49 mph) estimated gust	$25,000 property; $0 crops (2025 dollars)	0, 0	BACKUS BEACH	new since last plan; within last 5 years	B1-c most damaging: Thunderstorm Wind
2021-12-16	High Wind	50 kt (58 mph) estimated gust	$10,000 property; $0 crops, reported for the zone (2021 dollars)	0, 0	NWS zone MIZ030 (ALCONA), zone-level	in the 12 months before plan approval; within last 5 years	B1-c most damaging: High Wind and Strong Wind
2018-07-16	Hail	1 in	$0 property; $500 crops (2018 dollars)	0, 0	MIKADO		B1-c most damaging: Hail
2016-10-17	Hail	2 in	$0 property; $0 crops (2016 dollars)	0, 0	GLENNIE		B1-c worst recorded: Hail
2010-10-27	High Wind	55 kt (63 mph) estimated gust	$0 property; $0 crops, reported for the zone (2010 dollars)	0, 0	NWS zone MIZ030 (ALCONA), zone-level		B1-c worst recorded: High Wind and Strong Wind
2008-06-22	Flash Flood		$100,000 property; $0 crops (2008 dollars)	0, 0	HARRISVILLE ARPT to KURTZ		B1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2005-04-24	Heavy Snow		$3,000 property; crops not reported, reported for the zone (2005 dollars)	0, 0	NWS zone MIZ030 (ALCONA), zone-level		B1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2001-08-01	Heat		damage not reported	0, 0	NWS zone MIZ030 (ALCONA), zone-level		B1-c worst recorded: Excessive Heat, Heat
2001-07-22	Thunderstorm Wind	55 kt (63 mph) estimated	$2,000 property; crops not reported (2001 dollars)	0, 1	CURTISVILLE		deaths or injuries recorded
1998-05-19	Thunderstorm Wind	80 kt (92 mph), measurement type not recorded	damage not reported	0, 0	HARRISVILLE		B1-c worst recorded: Thunderstorm Wind
1991-03-27	Tornado	F3, 23 mi path length (whole path, pre-1996), 100 yd wide	$2,500,000 property; crops not recorded (1991 dollars)	0, 0	location not recorded		B1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (213 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
Coastal Flooding	0.013	events per year at a location (modeled)	about 0.013 per year at a given location in the county		Storm Events records in 0 of 30 years, 1996 to 2025 (0%)	not shown	modeled	see B1-f	No descriptor: no Storm Events record 1996 to 2025
Cold Wave	2.05	event-days per year	about 2.05 days per year	Likely (from Storm Events: 3 of 30 years)	event-days in 3 of 30 years, 1996 to 2025 (10%)	39	2005-11-12 to 2024-11-12 (19 years)	countywide
Drought	0	event-days per year	none modeled		event-days in 0 of 30 years, 1996 to 2025 (0%)	0	2000 to 2025 (25.25 years; D3 and D4 only)	countywide	No Storm Events drought record, 1996 to 2025
Earthquake	0.000334	annual probability at a location	chance a given location in the county has at least minor-damage shaking in a year: 0.0334%			not shown	modeled	see B1-f	No descriptor (Storm Events does not record earthquakes).
Hail	0.867	events per year	about 0.87 per year	Likely	FEMA annualized frequency (modeled)	33.5 (modeled)	1986 to 2023 (38 years)	countywide
Heat Wave	0.842	event-days per year	about 0.842 days per year	Possible (from Storm Events: 2 of 30 years)	event-days in 2 of 30 years, 1996 to 2025 (6.67%)	14	2005-11-12 to 2024-11-12 (19 years)	countywide
Hurricane	0.0131	events per year	about 1 in 77 years	Possible	FEMA annualized frequency (modeled)	6	1851 to 2024 (Atlantic)	see B1-f	NRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d.
Ice Storm	0.0744	event-days per year	about 0.0744 days per year	Likely (from Storm Events: 4 of 30 years)	event-days in 4 of 30 years, 1996 to 2025 (13.3%)	2	1946-12-31 to 2014-02-12 (67 years)	countywide
Inland Flooding	0.143	event-days per year	about 0.143 days per year	Likely (from Storm Events: 3 of 30 years)	event-days in 3 of 30 years, 1996 to 2025 (10%)	4	1996 to 2023 (28 years)	see B1-f
Landslide	0.182	events per year (modeled)	about 1 in 6 years	Likely	FEMA annualized frequency (modeled)	not shown	modeled	see B1-f
Lightning	25.3	days per year with a strike	about 25.3 days per year	Highly likely	FEMA annualized frequency (modeled)	not shown	1995 to 2023 (29 years; CONUS)	countywide
Strong Wind	0.771	events per year	about 0.77 per year	Likely	FEMA annualized frequency (modeled)	12	1986 to 2023 (38 years)	countywide
Tornado	0.173	events per year	about 1 in 6 years	Likely	FEMA annualized frequency (modeled)	not shown	1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)	see B1-f
Tsunami		annual probability at the most exposed location (used in place of a county value)			Storm Events records in 0 of 30 years, 1996 to 2025 (0%)	not shown	modeled	see B1-f	No descriptor: no Storm Events record 1996 to 2025
Wildfire	0.000255	annual probability at a location	chance a given location in the county burns in a year: 0.0255%		Storm Events records in 0 of 30 years, 1996 to 2025 (0%)	not shown	modeled	see B1-f	No descriptor: no Storm Events record 1996 to 2025
Winter Weather	13.7	event-days per year	about 13.7 days per year	Likely (from Storm Events: 24 of 30 years)	event-days in 24 of 30 years, 1996 to 2025 (80%)	260	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	16	30	0.533
Hail	2.00 in+	1996 to 2025	2	30	0.0667
Thunderstorm Wind (counted as NRI Strong Wind)	50-64 kt	1996 to 2025	42	30	1.4
Thunderstorm Wind (counted as NRI Strong Wind)	65 kt+	1996 to 2025	1	30	0.0333
Thunderstorm Wind (counted as NRI Strong Wind)	unmeasured or below 50 kt	1996 to 2025	1	30	0.0333
Tornado	EF0-1	1996 to 2025	3	30	0.1
Tornado	EF2-3	1996 to 2025	0	30	0
Tornado	EF4-5	1996 to 2025	0	30	0
Tornado	unrated (EFU)	1996 to 2025	0	30	0

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
Coastal Flooding	2 of 5	79.7	80.1	80.6	Relatively Low 2, No Rating 3
Cold Wave	5 of 5	60.6	77.4	83.5	Relatively High 2, Relatively Moderate 3
Drought	0 of 5				No Rating 5
Earthquake	5 of 5	5.5	6.7	10.4	Very Low 5
Hail	5 of 5	53.3	66.7	73.7	Relatively Moderate 1, Relatively Low 4
Heat Wave	5 of 5	3.3	5.3	7.1	Very Low 5
Hurricane	5 of 5	37.3	41.2	44.5	Very Low 5
Ice Storm	5 of 5	6.7	16.2	18.4	Very Low 5
Inland Flooding	5 of 5	34.1	73.4	88.9	Relatively High 1, Relatively Moderate 3, Relatively Low 1
Landslide	5 of 5	53.8	82.7	93.3	Relatively Low 3, Very Low 2
Lightning	5 of 5	81.0	94.6	97.0	Very High 1, Relatively High 4
Strong Wind	5 of 5	38.4	59.8	66.5	Relatively Moderate 3, Relatively Low 2
Tornado	5 of 5	32.7	44.6	51.7	Relatively Low 5
Tsunami	0 of 5				Insufficient Data 5
Wildfire	5 of 5	68.4	74.8	87.4	Relatively Low 4, Very Low 1
Winter Weather	5 of 5	21.5	27.6	30.6	Relatively Low 5

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, 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.

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
Alcona County	County	Approved, expires 2027-03-20	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; 0 since its plan
Harrisville city	City	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	14 total; no approved plan
Lincoln village	Village	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	$5,971.54	9 total; no approved plan
Alcona township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved plan
Caledonia township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	$14,655.96	0 total; no approved plan
Curtis township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved plan
Greenbush township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 1	no Public Assistance recorded	4 total; no approved plan
Gustin township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved plan
Harrisville township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	14 total; no approved plan
Hawes township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved plan
Haynes township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved plan
Mikado township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	13 total; no approved plan
Millen township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved plan
Mitchell township	Township	Plan 107526 approved 2022-03-21, pending adoption here; not yet eligible	FMA RL 0, SRL 0; any 0	no Public Assistance recorded	0 total; no approved 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 2022-03-21county-coded records, property plus crops, nominal dollars	Zone-level damage since planproperty plus crops, reported for the zone	Public Assistance since plannominal dollars; see note	Note
Coastal Flooding	$518,524,889	n/a	356	$3,095	n/a	$198	0.000597%
Cold Wave	$4,507,235,742	$14,794,476	10,159	$160	$12,987	$540,120	under 0.0001%
Drought	n/a	$0	n/a	n/a	$0	n/a					agriculture exposure is 0 in NRI
Earthquake	$6,797,268,543	n/a	10,167	$4,104	n/a	$877	under 0.0001%
Hail	$4,507,235,742	$14,794,476	10,159	$61,908	$1,971	$4,370	0.00137%
Heat Wave	$4,507,235,742	$14,794,476	10,159	$294	under $1	$15,661	under 0.0001%
Hurricane	$4,469,314,019	$14,623,176	10,103	$8,770	$718	$13	0.000196%
Ice Storm	$4,493,103,780	n/a	10,130	$3,709	n/a	$517	under 0.0001%			$305,095.31
Inland Flooding	$4,497,075,684	$224,375	346	$3,573,447	$424	$88	n/a (see note)			no Public Assistance recorded (1 declaration)	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	$47,370,459	n/a	94	$81	n/a	$1,142	0.000171%
Lightning	$4,507,235,742	n/a	10,159	$3,807	n/a	$211,699	under 0.0001%
Strong Wind	$4,507,235,742	$14,794,476	10,159	$34,123	$124	$50,046	0.000757%	$25,000
Tornado	$4,507,235,742	$14,794,476	10,159	$97,955	$73	$79,389	0.00217%			no Public Assistance recorded (1 declaration)
Tsunami	n/a	n/a	n/a	n/a	n/a	n/a					NRI publishes no building exposure for this county
Wildfire	$726,289,176	$2,984,038	2,485	$19,010	$6	$1,084	0.00262%
Winter Weather	$4,507,235,742	$14,794,476	10,159	$377	$67	$2,026	under 0.0001%		$0	$305,095.31

Totals since 2022-03-21 (Storm Events through 2026-06-30): 4 county-coded records, 1 with a damage value recorded (including $0), $25,000; 12 zone-level records, 2 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: $305,095.31 on 2 counted declarations, 1 of them with Public Assistance.

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	10,159
Building value (total, not at risk)	$4,507,235,742
Agriculture value (total, not at risk)	$14,794,476
NRI risk rating (all hazards)	Very Low
Expected annual loss, buildings and agriculture, all hazards	$3,827,209
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)	$907,229
Social vulnerability rating	Very High
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)	0
Repetitive loss, NFIP insurance definition	1	Severe repetitive loss, NFIP insurance definition	0

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	RL, NFIPproperties	Any categoryproperties
County total	1	1
of which: Greenbush township	1	1
Statewide, no county in FEMA's file	4	4

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	RL, NFIPproperties	Any categoryproperties
Alcona County	261881	0	0
Harrisville city	260543	0	0
Lincoln village	261865	0	0
Alcona township	260996	0	0
Caledonia township	261059	0	0
Curtis township	261119	0	0
Greenbush township	260001	1	1
Gustin township	261161	0	0
Harrisville township	260955	0	0
Hawes township	261393	0	0
Haynes township	260274	0	0
Mikado township	261019	0	0
Millen township	261120	0	0
Mitchell township	261238	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	RL, NFIPproperties	Any categoryproperties
single-family residential	1	1
2 to 4 unit residential	0	0
other residential	0	0
non-residential	0	0
not reported	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 1 property is 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, organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B. Each section heading names the item its tables support; the plan and FEMA's review decide whether the 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). Alcona County, MI: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 26001). Automated baseline. https://hazardplain.org/mi/26001/ 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: contact@hazardplain.org

Hazard Plain release 2026-10. As of 2026-09-30; Storm Events data through 2026-06-30. Automated baseline.