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Lawrence County, Pennsylvania

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

Relatively Low overall risk
39th of 67highest risk in Pennsylvania
$25Mexpected losses a year
10federal declarations
1 in 250homes with flood insurance
Photo: U.S. Geological Survey, public domain

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

$21.8 million a yearExpected losses. Damaging events about 2 times a year.
  • 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.
$744,913 a yearExpected losses. Damaging events about once every 6 years.
  • 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.

Lightning

Moderate
$631,593 a yearExpected losses. Damaging events about 40 times a year.
  • Go indoors when you hear thunder.
  • Use surge protectors for electronics.
HazardRatingScoreExpected loss a year
Inland floodingModerate83.1
$22M
TornadoLow37.7
$745K
LightningModerate77.7
$632K
Strong windLow50.1
$533K
HailLow49.7
$250K
Cold waveVery Low16.4
$164K
Heat waveVery Low29.4
$124K
EarthquakeVery Low36.7
$119K
Winter weatherLow50.1
$62K
Ice stormLow43.6
$61K
HurricaneVery Low47.3
$56K
WildfireVery Low27.3
$12K
LandslideLow63.6
$3K
AvalancheVery Low13.6
$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

Severe Storm3
Hurricane3
Flood2
Snowstorm2

Most recent

Oct 1, 2013Severe Storms, Tornadoes, and FloodingMajor disaster
Oct 29, 2012Hurricane SandyEmergency
Sep 10, 2005Hurricane KatrinaEmergency
Sep 19, 2004Severe Storms and Flooding Associated With Tropical Depression FrancesMajor disaster
Sep 19, 2004Tropical Depression IvanMajor disaster
Aug 23, 2003Severe Storms, Tornadoes, and FloodingMajor disaster
Jan 21, 1996Severe Storms and FloodingMajor disaster
Mar 16, 1993Severe Snowfall & Winter StormEmergency
Jan 29, 1977SnowstormsEmergency
Jun 23, 1972Tropical Storm AgnesMajor disaster

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.

13tornadoes
105hail reports, largest 2 inches
389damaging thunderstorm winds
125floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Sep 24, 1977F2–0 / 0
Aug 8, 1992F2–11 / 0
Jun 10, 1954F2–2 / 0
Aug 8, 1992F2–0 / 0
Jul 10, 2013EF1Mountair0 / 0

Most damaging storms

DateTypeNearDamage
Sep 24, 1977Tornado–$3M
Jul 9, 2023Flash FloodNew Castle Jct$1M
Jul 23, 1991Tornado–$250K
Aug 8, 1992Tornado–$250K
Jul 28, 1999Flash FloodCountywide$250K
Jul 28, 1999Flash FloodCountywide$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.

0hurricanes
0major hurricanes (Category 3+)
1tropical storms
1979most recent: Frederic

Strongest storms nearby

DateStormStrengthClosest
Sep 14, 1979FredericTropical storm, 40 mph62 mi

Most recent storms

DateStormStrengthClosest
Sep 14, 1979FredericTropical storm, 40 mph62 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 ›
0.4%of homes have federal flood insurance (126 policies)
15.1%of homes in mapped high-risk flood zones are insured
$2 millionpaid on 207 flood claims since 1978
2004costliest year, with $856,129 paid

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

$147,200median home value (Pennsylvania $254,500, US $332,700)
1957median year homes were built (Pennsylvania 1965, US 1980)
77%of homes built before 1980, before many modern wind, quake and flood building rules
6.6%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; 39,591 housing units.

Compare in Pennsylvania

All 67 ›
Largest countiesOverall riskTop hazard
Philadelphia CountyVery HighInland flooding
Allegheny CountyHighInland flooding
Montgomery CountyHighInland flooding
Bucks CountyHighInland flooding
Delaware CountyModerateInland flooding
Lancaster CountyHighInland flooding
Chester CountyModerateInland flooding
York CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Mahoning County, OHModerate10
Butler CountyLow9
Beaver CountyLow13
Mercer CountyLow11
Columbiana County, OHLow16

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.