Hazard Plain Automated baseline

Douglas County, WA

Risk-assessment baseline packet

County FIPS:
53017
Release:
2026-10
Data as of:
2026-09-30
Storm Events data through:
2026-06-30

Hazard Plain is an independent product built from public federal data. It is not a FEMA document and is not reviewed or endorsed by FEMA or any state agency.

Hazard Plain release 2026-10, as of 2026-09-30.

Summary

Plan status as of 2026-09-30: Expired on 2025-07-13. Plan: Douglas County Hazard Mitigation Plan (FEMA plan 103627), approved 2020-07-14.

Since the plan was approved on 2020-07-14: 2 new hazard declarations (1 incident) and 84 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 ($17,718,957 a year), Cold Wave ($3,554,322) and Wildfire ($2,693,720).

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.

Plan clock

Status:
Expired on 2025-07-13
Plan:
Douglas County Hazard Mitigation Plan (FEMA plan 103627)
Approved:
2020-07-14
Days since expiry:
444
Update underway:
none recorded in FEMA's plan tracker

Until a new plan is approved, FEMA mitigation project grants (HMGP, FMA) need a FEMA exception (44 CFR 201.6(a)(3)).

What changed since your last plan (approved 2020-07-14)

New federal declarations:
2 new hazard declarations (1 incident): FM-5351-WA (Cold Springs/Pearl Hill Fire), DR-4584-WA (Wildfires and Straight-Line Winds)
Storm Events records since approval:
84 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 0
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

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiry
Douglas CountyCountyExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Bridgeport cityCityExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Coulee Dam townTownApproved, expires 2027-06-21Okanogan County Multi-Jurisdictional Hazard Mitigation Plan (FEMA plan 104429)2022-06-222027-06-21264
East Wenatchee cityCityExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Mansfield townTownExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Rock Island cityCityExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Waterville townTownExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Name not given in FEMA data (ID R10_204902)School/School DistrictExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Douglas County Public Utility DistrictElectric/Power AuthorityExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444
Foster Creek CDConservation DistrictExpired on 2025-07-13Douglas County Hazard Mitigation Plan (FEMA plan 103627)2020-07-142025-07-13-444

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

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 EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL total (see note)modeled dollars per yearStorm Events records, 1996 to 2026-06-30countWhy this hazard can be left outNRI Not Applicable, no declaration and no Storm Events record since 1996Storm Events coverage note
1Inland FloodingRelatively ModerateRelatively Moderate$17,718,792$2$162$17,718,95710
2Cold WaveRelatively ModerateRelatively Moderate$1,553$2,756,126$796,643$3,554,3227Includes 1 Frost/Freeze record (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
3WildfireRelatively ModerateRelatively Moderate$2,544,117$4,607$144,996$2,693,720111
4EarthquakeRelatively LowRelatively Low$1,162,898n/a$423,216$1,586,114Storm Events does not record earthquakes.
5Heat WaveRelatively LowRelatively Low$139$30,325$646,063$676,5282
6HailRelatively LowRelatively Low$1,073$262,297$2,895$266,26512
7LightningRelatively LowRelatively Low$3,106n/a$219,021$222,1280No recorded events in Storm Events since 1996 (data through 2026-06-30).
8Strong WindRelatively LowRelatively Low$21,083$62,594$42,436$126,11269Includes 46 High Wind and 13 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
9Winter WeatherRelatively LowRelatively Low$7,538$2,662$56,354$66,554205
10TornadoVery LowVery Low$10,735$220$15,712$26,6672
11DroughtVery LowVery Lown/a$2,048n/a$2,0480Declared 1 time; no Storm Events record of this type.
12AvalancheVery LowVery Low$43n/a$1,360$1,4031
13Volcanic ActivityVery LowVery Low$3n/a$1,093$1,0960Declared 1 time; no Storm Events record of this type.
14LandslideVery LowVery Low$569n/a$518$1,0877
15Ice StormVery LowVery Low$25n/a$516$5413
HurricaneNot ApplicableNot Applicable0NRI rates hurricane Not Applicable for this county, and no counted federal declaration for this county names it (EM-3227-WA 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 lightning 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: 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

HazardHighest-rated census tractsNRI risk rating, score 0 to 100
Avalanchetract 9503 (Very Low, 52.9); tract 9501.02 (Very Low, 52.4); tract 9501.01 (Very Low, 52.2)
Earthquaketract 9503 (Relatively Moderate, 85.0); tract 9505 (Relatively Moderate, 83.1); tract 9501.01 (Relatively Moderate, 80.6)
Hurricaneno tract has a National Risk Index rating for this hazard
Landslidetract 9501.01 (Relatively Low, 91.1); tract 9502 (Relatively Low, 86.3); tract 9503 (Relatively Low, 85.5)
Tornadotract 9503 (Very Low, 14.5); tract 9504 (Very Low, 13.9); tract 9501.01 (Very Low, 10.1)
Volcanic Activitytract 9504 (Relatively Low, 97.2); tract 9503 (Relatively Low, 97.1); tract 9508 (Relatively Low, 95.1)
Wildfiretract 9501.01 (Relatively High, 98.8); tract 9502 (Relatively High, 98.8); tract 9501.02 (Relatively High, 98.6)

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 9503 is Census Tract 9503). 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

HazardScaleRecordscount and yearsObserved rangeWorst recorded eventMost damaging (when different)How it applies to jurisdictionsNote
Avalanchenone (count and damage only)1 record, 1997 (1 zone-level)No damage reported in 1 record.Countywide (zone-level records).
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill6 records, 2004 to 2013 (6 zone-level)1 day to 3 days (median 2 days); 5 with a recorded value3 consecutive days, 2006-11-27 to 2006-11-29, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage1 record, 2008 (1 zone-level)Frost/Freeze, 2008-04-19, $105,000,000 crop damage (2008 dollars); NWS zone WAZ041Countywide (zone-level records).
DroughtU.S. Drought Monitor scale (D0 to D4)0Storm 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.
EarthquakeModified Mercalli (local data)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)16 records, 1956 to 20230.75 in to 1.5 in (median 1 in); 15 with a recorded value1.5 in hail, 2008-07-01; same size also recorded on 1992-06-29Hail, 2006-07-05, property not reported; $5,920,000 crops (2006 dollars)Event records naming jurisdictions in the plan: Bridgeport city (1 record), East Wenatchee city (1 record), Mansfield town (1 record), Waterville town (1 record).
Excessive Heat, Heatheat index (in event narratives)2 records, 2021 to 2022 (2 zone-level)1 day to 5 days (median 3 days); 2 with a recorded value5 consecutive days, 2021-06-26 to 2021-06-30, zone-levelCountywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson0Storm 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 StormSperry-Piltz ice scale (local data)3 records, 2005 to 2017 (3 zone-level)No damage reported in 3 records.Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)10 records, 2010 to 2023Flash Flood, 2023-07-10, $1,000,000 property; $0 crops (2023 dollars)Event records naming jurisdictions in the plan: Waterville town (3 records), Bridgeport city (1 record), East Wenatchee city (1 record).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 Flownone (count and damage only)7 records, 2010 to 2021 (2 zone-level)Debris Flow, 2016-07-19, $7,000 property; $0 crops (2016 dollars)Event records naming jurisdictions in the plan: Waterville town (4 records). Zone-level records (2) apply countywide.
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)0Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)59 records, 1997 to 2026 (59 zone-level)32 kt (37 mph) to 94 kt (108 mph) (median 53.5 kt (62 mph)); 56 with a recorded value94 kt (108 mph) measured gust, High Wind, 2003-10-28; NWS zone WAZ043High Wind, 2002-08-16, $300,000 property; $25,000,000 crops (zone total, 2002 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)11 records, 1994 to 202226 kt (30 mph) to 72 kt (83 mph) (median 50 kt (58 mph)); 9 with a recorded value72 kt (83 mph), measurement type not recorded, Thunderstorm Wind, 1997-08-26Thunderstorm Wind, 2013-08-10, $80,000 property; $100,000 crops (2013 dollars)Event records naming jurisdictions in the plan: Waterville town (3 records), Bridgeport city (2 records), East Wenatchee city (1 record).
TornadoEnhanced Fujita (Fujita before Feb 2007)3 records, 1992 to 2016F/EF0; 3 with a recorded valueEF0 tornado, 2016-07-22, 0.2 mi within this county, 50 yd wide, $0 property; $0 crops (2016 dollars)Event records naming jurisdictions in the plan: East Wenatchee city (1 record).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 AshfallVolcanic Explosivity Index (local data)0
Wildfireacres burned (local data)111 records, 2006 to 2026 (111 zone-level)Wildfire, 2014-07-14, $120,000,000 property; $1,000,000 crops (2014 dollars); NWS zone WAZ043Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)205 records, 1996 to 2025 (205 zone-level)Winter Weather, 2005-11-24, $250,000 property; crops not reported (2005 dollars); NWS zone WAZ044Countywide (zone-level records).

In event narratives only (local data needed): wind chill, temperature, heat index, ice thickness, acres burned and snow depth; any physical measure of avalanche, 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: 19 declarations covering 14 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

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2021-02-042020-09-01DR-4584-WAMajor disasterWildfires and Straight-Line WindsWildfire$5,169,203.15new since last plan
2020-09-072020-09-07FM-5351-WAFire managementCold Springs/Pearl Hill FireWildfireno Public Assistance recordednew since last plansame incident as DR-4584
2020-07-122020-07-11FM-5320-WAFire managementRoad 11 FireWildfireno Public Assistance recordedin the 12 months before plan approval
2020-03-222020-01-20DR-4481-WAMajor disasterCOVID-19 PandemicNon-natural, not counted$442,621.99in the 12 months before plan approval
2020-03-132020-01-20EM-3427-WAEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedin the 12 months before plan approvalsame incident as DR-4481
2018-08-122018-08-11FM-5271-WAFire managementGrass Valley FireWildfireno Public Assistance recorded
2018-07-282018-07-27FM-5261-WAFire managementChelan Hills FireWildfireno Public Assistance recorded
2015-08-212015-08-13EM-3372-WAEmergencyWildfiresWildfireno Public Assistance recorded
2015-08-142015-08-14FM-5100-WAFire managementChelan Fire ComplexWildfireno Public Assistance recordedsame incident as EM-3372
2012-09-092012-09-09FM-5013-WAFire managementBarker Canyon FireWildfireno Public Assistance recorded
2008-07-112008-07-10FM-2784-WAFire managementBadger Mountain Fire ComplexWildfireno Public Assistance recorded
2005-09-072005-08-29EM-3227-WAEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2004-07-062004-07-05FM-2527-WAFire managementWa-Beebe Fire-07-04-2004Wildfireno Public Assistance recorded
2001-03-012001-02-28DR-1361-WAMajor disasterEarthquakeEarthquake$14,770.97
1997-01-171996-12-26DR-1159-WAMajor disasterSevere Winter Storms, Land & Muds Slides,FloodingInland Flooding; Landslide; Winter Weatherno Public Assistance recorded
1989-04-141989-03-08DR-822-WAMajor disasterHeavy Rains, Flooding & MudslidesInland Flooding (primary); also designated: Landslideno Public Assistance recorded
1980-05-211980-05-21DR-623-WAMajor disasterVolcanic Eruption, Mt. St. HelensVolcanic Activityno Public Assistance recorded
1977-03-311977-03-31EM-3037-WAEmergencyDroughtDroughtno Public Assistance recorded
1972-06-101972-06-10DR-334-WAMajor disasterSevere Storms & FloodingInland Floodingno 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

DeclaredIncident beganFEMA numberTypeTitleMapped hazard
1963-03-021963-03-02DR-146-WAMajor disasterFloodsInland Flooding
1962-10-201962-10-20DR-137-WAMajor disasterSevere StormsHazard not mapped (severe storm title names no single hazard); not counted
1957-03-061957-03-06DR-70-WAMajor disasterFloodsInland Flooding
1956-02-251956-02-25DR-50-WAMajor disasterFloodInland 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.

16 Fire Management declarations (1970-07-18 to 1998-09-25) 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: 2 rows, $507,864.96

Sources: 2, 3

FEMA numberDeclaredTitleApplicantPA obligatedfederal share obligated, nominal dollars
DR-4243-WA2015-10-20Wildfires and MudslidesPublic Utility District #1 of Douglas County$129,817.29
DR-4243-WA2015-10-20Wildfires and MudslidesGREATER WENATCHEE IRRIGATION$378,047.67

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.

Public Assistance not placed in any Washington county: 1 row, $248,381.20; listed on the Washington state page.

Source: 3

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

HazardStorm Events records, all years on file(years in the Period column)Since plan approvalrecordsIn the 12 months before plan approvalrecordsLast 5 yearsrecordsDeclared incidents, all yearsseparate disastersDeclared since approvalseparate disastersPeriodStatement
Avalanche1000001996 to 2026-06-30
Cold Wave7000001996 to 2026-06-30Includes 1 Frost/Freeze record.
Drought0000101996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Earthquake000010Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail16313001955 to 2026-06-30
Heat Wave2201001996 to 2026-06-30
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm3000001996 to 2026-06-30
Inland Flooding10222301996 to 2026-06-30
Landslide7210201996 to 2026-06-30
Lightning0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Strong Wind701449001955 to 2026-06-30Includes 46 High Wind and 13 Strong Wind records.
Tornado3000001950 to 2026-06-30
Volcanic Activity0000101996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Wildfire11125314811996 to 2026-06-30
Winter Weather20536928101996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2023-07-10Flash Flood$1,000,000 property; $0 crops (2023 dollars)0, 0MC CARTENEYnew since last plan; within last 5 yearsB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2021-06-26Excessive Heat$0 property; $0 crops (zone total, 2021 dollars)0, 0NWS zone WAZ041 (WENATCHEE AREA), zone-levelnew since last planB1-c worst recorded: Excessive Heat, Heat
2020-09-07Wildfire$11,000,000 property; crops not reported (zone total, 2020 dollars)1, 2NWS zone WAZ043 (OKANOGAN VALLEY), zone-levelnew since last plandeaths or injuries recorded
2019-09-01Wildfire$10,000 property; $0 crops (zone total, 2019 dollars)1, 0NWS zone WAZ043 (OKANOGAN VALLEY), zone-levelin the 12 months before plan approvaldeaths or injuries recorded
2014-07-14Wildfire$120,000,000 property; $1,000,000 crops (zone total, 2014 dollars)0, 0NWS zone WAZ043 (OKANOGAN VALLEY), zone-levelB1-c worst recorded: Wildfire
2008-07-01Hail1.5 in$0 property; $0 crops (2008 dollars)0, 0LEAHYB1-c worst recorded: Hail
2008-04-19Frost/Freeze$0 property; $105,000,000 crops (zone total, 2008 dollars)0, 0NWS zone WAZ041 (WENATCHEE AREA), zone-levelB1-c worst recorded: Frost/Freeze
2006-11-27Extreme Cold/Wind Chill$0 property; $0 crops (zone total, 2006 dollars)0, 0NWS zone WAZ043 (OKANOGAN VALLEY), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2005-11-24Winter Weather$250,000 property; crops not reported (zone total, 2005 dollars)0, 0NWS zone WAZ044 (WATERVILLE PLATEAU), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2003-10-28High Wind94 kt (108 mph) measured gustdamage not reported0, 0NWS zone WAZ043 (OKANOGAN VALLEY), zone-levelB1-c worst recorded: High Wind and Strong Wind
1998-01-06Heavy Snow$100,000 property; $0 crops (zone total, 1998 dollars)1, 7Storm Events area DOUGLAS/SE CHELAN (legacy zone code WAZ037), zone-leveldeaths or injuries recorded
1997-08-26Thunderstorm Wind72 kt (83 mph), measurement type not recorded$0 property; $0 crops (1997 dollars)0, 0DOUGLASB1-c worst recorded: Thunderstorm Wind

The full list is in the Excel file, sheet "B1-d Storm Events history" (435 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

HazardFEMA annualized frequency (modeled)unit per rowUnitIn plain termsDescriptorDescriptor basisNRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)NRI periodLocationNote
Avalanche0.01events per yearabout 1 in 100 yearsPossibleFEMA annualized frequency (modeled)01994 to 2023 (30 years)see B1-f0.01 is NRI's minimum avalanche frequency for a county in an avalanche susceptibility zone; NRI records no avalanche here, so the descriptor reflects the floor, not local events.
Cold Wave1.2event-days per yearabout 1.2 days per yearLikelyStorm Events event-days in 5 of 30 years, 1996 to 2025 (16.7%)22.82005-11-12 to 2024-11-12 (19 years)countywide
Drought14.8event-days per yearabout 14.8 days per yearStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)4692000 to 2025 (25.25 years; D3 and D4 only)countywideNo Storm Events drought record, 1996 to 2025
Earthquake0.00591annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.591%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail0.111events per yearabout 1 in 9 yearsLikelyFEMA annualized frequency (modeled)4.2 (modeled)1986 to 2023 (38 years)countywide
Heat Wave4.44event-days per yearabout 4.44 days per yearPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)41.42005-11-12 to 2024-11-12 (19 years)countywide
Hurricaneevents per year1851 to 2024 (Atlantic); 1949 to 2024 (Pacific)see B1-fNot Applicable in NRI for this county; no descriptor.
Ice Storm0.0149event-days per yearabout 0.0149 days per yearPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)01946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding0.321event-days per yearabout 0.321 days per yearLikelyStorm Events event-days in 7 of 30 years, 1996 to 2025 (23.3%)91996 to 2023 (28 years)see B1-f
Landslide0.846events per year (modeled)about 0.85 per yearLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning11.5days per year with a strikeabout 11.5 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind0.11events per yearabout 1 in 9 yearsLikelyFEMA annualized frequency (modeled)51986 to 2023 (38 years)countywide
Tornado0.0537events per yearabout 1 in 19 yearsPossibleFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Volcanic Activity0.0124annual probabilityabout 1 in 81 yearsPossibleFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Wildfire0.0119annual probability at a locationchance a given location in the county burns in a year: 1.19%LikelyStorm Events records in 19 of 30 years, 1996 to 2025 (63.3%)not shownmodeledsee B1-f
Winter Weather14.6event-days per yearabout 14.6 days per yearHighly likelyStorm Events event-days in 30 of 30 years, 1996 to 2025 (100%)2772005-11-12 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

UnitDescriptorDefinition
events per yearHighly likely1 or more per year
events per yearLikelyabout once in 1 to 10 years
events per yearPossibleabout once in 10 to 100 years
events per yearUnlikelyless than once in 100 years
annual probabilityLikely10% to under 100% chance in a given year
annual probabilityPossible1% to under 10% chance in a given year
annual probabilityUnlikelyunder 1% chance in a given year
event-days (share of years)Highly likelyevent-days recorded in 90% or more of years
event-days (share of years)Likelyevent-days recorded in 10% to under 90% of years
event-days (share of years)Possibleevent-days recorded in some years but under 10% of years
lightning strike-daysHighly likelycloud-to-ground strikes on 1 or more days per year

Intensity bands: historical frequency (Storm Events)

Source: 6

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 20256300.2
Hail2.00 in+1996 to 20250300
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 20255300.167
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20251300.0333
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20254300.133
TornadoEF0-11996 to 20252300.0667
TornadoEF2-31996 to 20250300
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

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

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Avalanche4 of 950.552.352.9Very Low 4, Not Applicable 5
Cold Wave9 of 943.669.999.7Very High 2, Relatively High 1, Relatively Moderate 3, Relatively Low 3
Drought8 of 967.070.580.4Relatively Low 1, Very Low 7, No Rating 1
Earthquake9 of 976.379.285.0Relatively Moderate 7, Relatively Low 2
Hail9 of 910.323.795.2Relatively High 2, Relatively Moderate 1, Relatively Low 1, Very Low 5
Heat Wave9 of 962.169.789.9Relatively High 2, Relatively Moderate 7
Hurricane0 of 9Not Applicable 9
Ice Storm9 of 90.81.52.1Very Low 9
Inland Flooding9 of 970.992.999.4Very High 3, Relatively High 5, Relatively Moderate 1
Landslide9 of 913.964.591.1Relatively Low 4, Very Low 5
Lightning9 of 955.475.794.1Relatively High 2, Relatively Moderate 7
Strong Wind9 of 923.043.976.7Relatively Moderate 2, Relatively Low 7
Tornado9 of 95.06.914.5Very Low 9
Volcanic Activity9 of 986.093.697.2Relatively Low 8, Very Low 1
Wildfire9 of 934.393.098.8Relatively High 4, Relatively Moderate 1, Relatively Low 2, Very Low 2
Winter Weather9 of 970.974.290.6Relatively High 2, Relatively Moderate 7

Cold Wave: Agriculture is 78% of NRI's expected annual loss for this hazard in the county, so the tract range mostly reflects where crop and livestock value is.

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.

Hail: Agriculture is 99% 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

JurisdictionTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollarsEvent records naming this placeall years; since its planNotes
Douglas CountyCountyExpired on 2025-07-13FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Bridgeport cityCityExpired on 2025-07-13FMA RL 0, SRL 0; any 0no Public Assistance recorded4 total; 1 since its plan
Coulee Dam townTownApproved, expires 2027-06-21no Public Assistance recorded0 total; 0 since its planNo NFIP community ID on this jurisdiction's plan row.
East Wenatchee cityCityExpired on 2025-07-13FMA RL 0, SRL 0; any 0no Public Assistance recorded4 total; 0 since its plan
Mansfield townTownExpired on 2025-07-13FMA RL 0, SRL 0; any 0no Public Assistance recorded1 total; 0 since its plan
Rock Island cityCityExpired on 2025-07-13FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Waterville townTownExpired on 2025-07-13FMA RL 0, SRL 0; any 0no Public Assistance recorded11 total; 3 since its plan

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

School districts and special districts get a plan clock row only.

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

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2020-07-14county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Avalanche$1,081,256n/aunder 1$43n/a$1,3600.00398%
Cold Wave$7,798,519,376$239,416,49342,903$1,553$2,756,126$796,643under 0.0001%
Droughtn/a$126,023,603n/an/a$2,048n/a0.00163% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$13,047,613,247n/a42,938$1,162,898n/a$423,2160.00891%
Hail$7,798,519,376$239,416,49342,903$1,073$262,297$2,895under 0.0001%$30,000
Heat Wave$7,798,519,376$239,416,49342,903$139$30,325$646,063under 0.0001%$0
HurricaneNot Applicable in NRI for this county
Ice Storm$7,798,519,376n/a42,903$25n/a$516under 0.0001%
Inland Flooding$7,793,938,209$1,091,481479$17,718,792$2$162n/a (see note)$1,015,000NRI 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$324,351,556n/a1,676$569n/a$5180.000175%$0
Lightning$7,798,519,376n/a42,903$3,106n/a$219,021under 0.0001%
Strong Wind$7,798,519,376$239,416,49342,903$21,083$62,594$42,4360.00027%$10,000$5,318,000Storm Events damage since the plan includes 5 zone-level High Wind records ($5,318,000): a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition.
Tornado$7,798,519,376$239,416,49342,903$10,735$220$15,7120.000138%
Volcanic Activity$7,798,519,376n/a42,903$3n/a$1,093under 0.0001%
Wildfire$1,202,740,753$138,057,3728,732$2,544,117$4,607$144,9960.212%$48,400,900$5,169,203.15
Winter Weather$7,798,519,376$239,416,49342,903$7,538$2,662$56,354under 0.0001%$40,000

Totals since 2020-07-14 (Storm Events through 2026-06-30): 9 county-coded records, 7 with a damage value recorded (including $0), $1,055,000; 75 zone-level records, 72 with a damage value recorded (including $0), $53,758,900 reported for the zone; Public Assistance: $5,169,203.15 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

MeasureValue
Population42,903
Building value (total, not at risk)$7,798,519,376
Agriculture value (total, not at risk)$239,416,493
NRI risk rating (all hazards)Relatively Low
Expected annual loss, buildings and agriculture, all hazards$24,592,556
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)$2,350,986
Social vulnerability ratingRelatively High
Community resilience ratingVery Low
NRI versionDecember 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

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)0Severe repetitive loss, FMA definition (44 CFR 77.2)0
Repetitive loss, NFIP insurance definition0Severe repetitive loss, NFIP insurance definition0

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

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total0000000
Statewide, no county in FEMA's file0020200

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

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Douglas County5300360000000
Bridgeport city5300370000000
East Wenatchee city5300380000000
Mansfield town5302510000000
Rock Island city5300390000000
Waterville town5300400000000

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: 0 in every occupancy group.

Sources: 1, 4

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 0 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):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
  5. 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)
  6. 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/
  7. 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
  8. 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). Douglas County, WA: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 53017). Automated baseline. https://hazardplain.org/wa/53017/ 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]