Franklin County, Washington
Natural disaster risk, federal disaster history and flood insurance facts.
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
- 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.
- Check that cooling works before summer.
- Know where the nearest cooling center is.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 83.5 | $24M | ||
| Heat wave | 87.7 | $3M | ||
| Cold wave | 65.5 | $2M | ||
| Earthquake | 80.7 | $2M | ||
| Wildfire | 84.6 | $698K | ||
| Strong wind | 41.2 | $445K | ||
| Ice storm | 78.6 | $381K | ||
| Hail | 42.7 | $205K | ||
| Lightning | 45.0 | $202K | ||
| Tornado | 12.5 | $105K | ||
| Winter weather | 44.8 | $56K | ||
| Drought | 22.7 | $8K | ||
| Landslide | 51.8 | $2K | ||
| Volcanic activity | 75.6 | $207 | ||
| Avalanche | 22.5 | $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
Most recent
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.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Apr 23, 1983 | F1 | – | 0 / 0 |
| Jul 1, 1978 | F1 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Feb 21, 2017 | Flood | Sagehill | $3M |
| Jul 7, 2002 | Thunderstorm Wind | Pasco | $770K |
| Apr 23, 1983 | Tornado | – | $25K |
| May 30, 2020 | Lightning | Pasco | $12K |
| Jun 30, 2008 | Thunderstorm Wind | Pasco | $5K |
| Jun 30, 2008 | Lightning | Pasco | $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 ›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
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 counties | Overall risk | Top hazard |
|---|---|---|
| King County | Earthquake | |
| Pierce County | Earthquake | |
| Snohomish County | Earthquake | |
| Spokane County | Inland flooding | |
| Clark County | Inland flooding | |
| Thurston County | Earthquake | |
| Kitsap County | Earthquake | |
| Yakima County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Benton County | 18 | |
| Grant County | 10 | |
| Walla Walla County | 11 | |
| Whitman County | 16 | |
| Adams County | 8 | |
| Columbia County | 14 |
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.