Lawrence County, Pennsylvania
Natural disaster risk, federal disaster history and flood insurance facts.
Lawrence County, Pennsylvania has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 66% of US counties. It ranks 39th of 67 counties in Pennsylvania. The costliest hazards here are inland flooding, tornadoes and lightning. FEMA estimates about $25 million a year in expected losses, or roughly $286 per resident. Since 1972 it has been included in 10 federal disaster or emergency declarations for natural events (6 major disasters). The most recent was in October 2013 (severe storms, tornadoes and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (126 policies). Since 1978, federal flood insurance has paid about $2.0 million on 207 claims here, including $856,000 for floods in 2004.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Lawrence 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.
- Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
- Turn on emergency alerts on your phone and keep a weather radio.
- Go indoors when you hear thunder.
- Use surge protectors for electronics.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 83.1 | $22M | ||
| Tornado | 37.7 | $745K | ||
| Lightning | 77.7 | $632K | ||
| Strong wind | 50.1 | $533K | ||
| Hail | 49.7 | $250K | ||
| Cold wave | 16.4 | $164K | ||
| Heat wave | 29.4 | $124K | ||
| Earthquake | 36.7 | $119K | ||
| Winter weather | 50.1 | $62K | ||
| Ice storm | 43.6 | $61K | ||
| Hurricane | 47.3 | $56K | ||
| Wildfire | 27.3 | $12K | ||
| Landslide | 63.6 | $3K | ||
| Avalanche | 13.6 | $14 |
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 moderate and community resilience is relatively high in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Lawrence County. 2020s bar runs to November 2026.
By type
Most recent
Pennsylvania also had 7 statewide declarations that did not name single counties.
Storm history since 1954
Tornado risk by county ›The National Weather Service has logged 633 storm reports in Lawrence County since 1954, with 0 deaths and 14 injuries and about $8.8 million in reported damage. The strongest on record here was an F2 tornado on September 24, 1977.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Sep 24, 1977 | F2 | – | 0 / 0 |
| Aug 8, 1992 | F2 | – | 11 / 0 |
| Jun 10, 1954 | F2 | – | 2 / 0 |
| Aug 8, 1992 | F2 | – | 0 / 0 |
| Jul 10, 2013 | EF1 | Mountair | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Sep 24, 1977 | Tornado | – | $3M |
| Jul 9, 2023 | Flash Flood | New Castle Jct | $1M |
| Jul 23, 1991 | Tornado | – | $250K |
| Aug 8, 1992 | Tornado | – | $250K |
| Jul 28, 1999 | Flash Flood | Countywide | $250K |
| Jul 28, 1999 | Flash Flood | Countywide | $250K |
Source: NOAA Storm Events Database, county-based reports through Jul 22, 2026. 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.
Hurricanes and tropical storms
Hurricane risk by county ›Since 1979, 0 hurricanes and 1 tropical storm have passed within 65 miles of the center of Lawrence County, 1 of them since 1950. The strongest was Tropical Storm Frederic (1979), with top winds near 40 mph about 62 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 14, 1979 | Frederic | Tropical storm, 40 mph | 62 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 14, 1979 | Frederic | Tropical storm, 40 mph | 62 mi |
Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.
Flood insurance in Lawrence 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 Lawrence 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; 39,591 housing units.
Compare in Pennsylvania
All 67 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Philadelphia County | Inland flooding | |
| Allegheny County | Inland flooding | |
| Montgomery County | Inland flooding | |
| Bucks County | Inland flooding | |
| Delaware County | Inland flooding | |
| Lancaster County | Inland flooding | |
| Chester County | Inland flooding | |
| York County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Mahoning County, OH | 10 | |
| Butler County | 9 | |
| Beaver County | 13 | |
| Mercer County | 11 | |
| Columbiana County, OH | 16 |
Common questions about Lawrence County
What is the biggest natural hazard in Lawrence County?
Inland flooding has the highest expected yearly losses in Lawrence County, about $21.8 million a year in FEMA's estimate. Tornado is second at $744,913.
How many federal disasters has Lawrence County had?
Lawrence County has been included in 10 federal disaster or emergency declarations for natural events since 1972, including 6 major disasters. The most recent was Severe Storms, Tornadoes, and Flooding in October 2013.
Is Lawrence County a high-risk place to live?
Its overall rating is Relatively Low, 39th highest of 67 in Pennsylvania. 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 Lawrence County?
Standard home insurance does not cover flooding. About 1 in 250 homes in Lawrence 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 Lawrence County had?
NOAA records list 13 tornadoes in Lawrence County since 1950. The strongest was an F2 tornado on September 24, 1977. The weather service has also logged 105 hail reports and 125 floods here.
How many hurricanes have hit Lawrence County?
NOAA's hurricane records show 0 hurricanes and 1 tropical storm passing within 65 miles of the center of Lawrence County. The strongest was Tropical Storm Frederic (1979), with winds near 40 mph.
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.