Home › Washington › Franklin County

Franklin County, Washington

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
25th of 39highest risk in Washington
$33Mexpected losses a year
9federal declarations
1 in 1000homes with flood insurance
Photo: U.S. Geological Survey, public domain

Franklin County, Washington has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 72% of US counties. It ranks 25th of 39 counties in Washington. The costliest hazards here are inland flooding, heat waves and cold waves. FEMA estimates about $33 million a year in expected losses, or roughly $336 per resident. Since 1977 it has been included in 9 federal disaster or emergency declarations for natural events (6 major disasters). The most recent was in March 2022 (severe winter storms, snowstorms, straight-line winds, flooding). Only 14 homes here carry federal flood insurance.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Franklin County

$24.1 million a yearExpected losses. Damaging events about once every 5 years.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Heat wave

Moderate
$2.6 million a yearExpected losses. Damaging events about 8 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.

Cold wave

Moderate
$1.8 million a yearExpected losses. Damaging events about once every 2 years.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
HazardRatingScoreExpected loss a year
Inland floodingModerate83.5
$24M
Heat waveModerate87.7
$3M
Cold waveModerate65.5
$2M
EarthquakeLow80.7
$2M
WildfireLow84.6
$698K
Strong windLow41.2
$445K
Ice stormModerate78.6
$381K
HailLow42.7
$205K
LightningLow45.0
$202K
TornadoVery Low12.5
$105K
Winter weatherLow44.8
$56K
DroughtVery Low22.7
$8K
LandslideVery Low51.8
$2K
Volcanic activityVery Low75.6
$207
AvalancheVery Low22.5
$53

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively low and community resilience is very low in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Franklin County. 2020s bar runs to November 2026.

By type

Flood3
Severe Storm2
Drought1
Volcanic Eruption1
Coastal Storm1
Fire1

Most recent

Mar 29, 2022Severe Winter Storms, Snowstorms, Straight-Line Winds, FloodingMajor disaster
Feb 4, 2021Wildfires and Straight-Line WindsMajor disaster
Apr 21, 2017Severe Winter Storms, Flooding, Landslides, MudslidesMajor disaster
Mar 2, 2009Severe Winter Storm and Record and Near Record SnowMajor disaster
Sep 7, 2005Hurricane Katrina EvacuationEmergency
Jan 17, 1997Severe Winter Storms, Land & Muds Slides,FloodingMajor disaster
May 21, 1980Volcanic Eruption, Mt. St. HelensMajor disaster
Mar 12, 1979FloodingEmergency
Mar 31, 1977DroughtEmergency

Washington also had 51 statewide declarations that did not name single counties.

Storm history since 1955

Tornado risk by county ›

The National Weather Service has logged 43 storm reports in Franklin County since 1955, with 1 death and 4 injuries and about $3.8 million in reported damage. The strongest on record here was an F1 tornado on April 23, 1983.

2tornadoes
5hail reports, largest 2.75 inches
31damaging thunderstorm winds
2floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 23, 1983F1–0 / 0
Jul 1, 1978F1–0 / 0

Most damaging storms

DateTypeNearDamage
Feb 21, 2017FloodSagehill$3M
Jul 7, 2002Thunderstorm WindPasco$770K
Apr 23, 1983Tornado–$25K
May 30, 2020LightningPasco$12K
Jun 30, 2008Thunderstorm WindPasco$5K
Jun 30, 2008LightningPasco$5K

Source: NOAA Storm Events Database, county-based reports through Aug 17, 2020. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Franklin County

Check your address flood zone ›
0.1%of homes have federal flood insurance (14 policies)
0%of homes in mapped high-risk flood zones are insured
$0paid on 1 flood claims since 1978
2012costliest year

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Franklin County

$379,300median home value (Washington $564,600, US $332,700)
1997median year homes were built (Washington 1985, US 1980)
37%of homes built before 1980, before many modern wind, quake and flood building rules
7.6%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 31,183 housing units.

Compare in Washington

All 39 ›
Largest countiesOverall riskTop hazard
King CountyVery HighEarthquake
Pierce CountyHighEarthquake
Snohomish CountyHighEarthquake
Spokane CountyModerateInland flooding
Clark CountyModerateInland flooding
Thurston CountyHighEarthquake
Kitsap CountyModerateEarthquake
Yakima CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Benton CountyModerate18
Grant CountyLow10
Walla Walla CountyLow11
Whitman CountyVery Low16
Adams CountyVery Low8
Columbia CountyVery Low14

Cities in Franklin County

Common questions about Franklin County

What is the biggest natural hazard in Franklin County?

Inland flooding has the highest expected yearly losses in Franklin County, about $24.1 million a year in FEMA's estimate. Heat wave is second at $2.6 million.

How many federal disasters has Franklin County had?

Franklin County has been included in 9 federal disaster or emergency declarations for natural events since 1977, including 6 major disasters. The most recent was Severe Winter Storms, Snowstorms, Straight-Line Winds, Flooding in March 2022.

Is Franklin County a high-risk place to live?

Its overall rating is Relatively Low, 25th highest of 39 in Washington. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Franklin County?

Standard home insurance does not cover flooding. About 1 in 1000 homes in Franklin County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Franklin County had?

NOAA records list 2 tornadoes in Franklin County since 1950. The strongest was an F1 tornado on April 23, 1983. The weather service has also logged 5 hail reports and 2 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.