County Hazards

States › Pennsylvania › Lehigh County

Lehigh County, Pennsylvania

Recorded hazard history: storm events since 1950, federal disaster declarations since 1953, flood insurance claims since 1978, and FEMA's risk index.

FIPS 42077 · 375,539 residents (2021) · 345 sq mi · dominant hazard Wind

Hail · 93Tornado · 15Flood · 126Wind · 517Winter · 312
1962-05-24: Hail1984-04-30: Hail1985-06-16: Hail1985-06-16: Hail1985-06-24: Hail1985-06-24: Hail1986-08-02: Hail1986-08-02: Hail1988-07-17: Hail1990-07-05: Hail1990-07-05: Hail1996-06-04: Hail2004-05-15: Hail2006-05-26: Hail2006-04-24: Hail2007-05-31: Hail2008-06-10: Hail2008-06-10: Hail2008-07-17: Hail2008-08-10: Hail2008-08-10: Hail2009-03-29: Hail2009-03-29: Hail2009-06-15: Hail2009-06-15: Hail2009-06-15: Hail2009-03-29: Hail2010-05-14: Hail2010-05-27: Hail2010-05-27: Hail2010-05-14: Hail2010-05-14: Hail2010-05-14: Hail2010-09-22: Hail2010-07-21: Hail2011-05-19: Hail2011-05-15: Hail2011-08-19: Hail2011-06-01: Hail2012-05-24: Hail2012-06-03: Hail2012-06-03: Hail2012-06-03: Hail2012-07-28: Hail2012-07-04: Hail2013-04-10: Hail2013-05-08: Hail2014-05-22: Hail2014-05-22: Hail2014-05-22: Hail2014-09-06: Hail2014-06-25: Hail2015-06-30: Hail2015-06-30: Hail2015-06-30: Hail2017-02-25: Hail2019-08-07: Hail2019-08-18: Hail2019-08-18: Hail2019-08-18: Hail2019-08-18: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2019-05-29: Hail2020-07-06: Hail2020-07-06: Hail2020-07-06: Hail2020-07-06: Hail2021-07-06: Hail2021-07-08: Hail2021-07-21: Hail2022-08-22: Hail2022-08-22: Hail2022-08-22: Hail2022-08-22: Hail2023-04-15: Hail2023-04-15: Hail2023-08-15: Hail2023-09-07: Hail2024-06-26: Hail2024-06-26: Hail2024-04-30: Hail2024-04-30: Hail2024-04-30: Hail2024-04-30: Hail2024-04-30: Hail1950-07-05: Tornado1957-08-07: Tornado1976-03-21: Tornado1982-04-03: Tornado1983-08-11: Tornado1984-07-05: Tornado1984-07-05: Tornado1995-05-29: Tornado2008-09-06: Tornado2010-07-14: Tornado2018-07-22: Tornado2019-05-29: Tornado2021-07-29: Tornado2021-07-29: Tornado2023-08-07: Tornado2005-04-07: Flood2005-10-08: Flood2007-03-02: Flood2007-05-31: Flood2007-04-15: Flood2007-06-01: Flood2007-07-05: Flood2008-02-13: Flood2008-03-05: Flood2008-06-10: Flood2009-08-28: Flood2009-08-12: Flood2009-08-12: Flood2009-08-02: Flood2010-12-01: Flood2010-10-01: Flood2011-08-28: Flood2011-08-28: Flood2011-03-10: Flood2011-09-28: Flood2011-09-05: Flood2011-09-07: Flood2011-09-08: Flood2011-08-13: Flood2012-05-23: Flood2012-06-01: Flood2012-09-18: Flood2013-07-28: Flood2013-08-29: Flood2013-08-28: Flood2014-07-14: Flood2014-05-01: Flood2014-04-30: Flood2014-06-13: Flood2014-07-14: Flood2015-06-30: Flood2016-07-18: Flood2017-04-06: Flood2017-04-06: Flood2017-07-24: Flood2017-07-24: Flood2017-07-24: Flood2017-07-01: Flood2017-07-01: Flood2017-07-01: Flood2017-07-01: Flood2018-11-02: Flood2018-11-02: Flood2018-11-02: Flood2018-07-04: Flood2018-07-22: Flood2018-08-21: Flood2018-08-21: Flood2018-08-11: Flood2018-08-21: Flood2018-08-21: Flood2018-08-11: Flood2018-08-13: Flood2019-07-21: Flood2019-07-21: Flood2019-06-18: Flood2019-07-22: Flood2019-07-22: Flood2020-08-04: Flood2020-08-04: Flood2020-08-04: Flood2020-08-04: Flood2020-08-04: Flood2021-08-18: Flood2021-09-08: Flood2021-09-08: Flood2021-09-08: Flood2021-08-18: Flood2021-08-18: Flood2021-08-18: Flood2021-08-18: Flood2021-09-01: Flood2023-04-15: Flood2023-04-15: Flood2023-04-15: Flood2023-07-09: Flood2026-06-11: Wind2026-06-06: Wind2026-05-20: Wind2026-03-16: Wind2026-03-16: Wind2026-03-16: Wind2025-12-19: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-03: Wind2025-07-03: Wind2025-05-16: Wind2024-07-16: Wind2024-07-16: Wind2024-07-16: Wind2024-07-16: Wind2024-06-29: Wind2024-06-26: Wind2024-06-26: Wind2024-06-26: Wind2024-06-22: Wind2024-06-22: Wind2024-06-14: Wind2024-06-14: Wind2024-06-14: Wind2024-05-23: Wind2024-05-23: Wind2024-05-23: Wind2024-05-23: Wind2023-09-08: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-09-07: Wind2023-08-07: Wind2023-08-07: Wind2023-08-07: Wind2023-07-21: Wind2023-06-26: Wind2023-06-26: Wind2022-03-31: Wind2021-08-10: Wind2021-08-10: Wind2021-07-29: Wind2021-07-29: Wind2021-07-29: Wind2021-07-21: Wind2021-07-21: Wind2021-07-17: Wind2021-07-17: Wind2021-07-08: Wind2021-07-08: Wind2021-07-06: Wind2021-07-06: Wind2021-07-01: Wind2021-06-21: Wind2021-06-21: Wind2021-06-21: Wind2021-06-21: Wind2021-06-08: Wind2021-05-26: Wind2021-05-26: Wind2021-05-26: Wind2021-05-26: Wind2021-05-26: Wind2021-05-26: Wind2021-05-26: Wind2021-04-21: Wind2020-11-30: Wind2020-11-15: Wind2020-11-15: Wind2020-11-15: Wind2020-11-15: Wind2020-11-15: Wind2020-11-15: Wind2020-11-15: Wind2020-11-15: Wind2020-08-29: Wind2020-08-29: Wind2020-08-28: Wind2020-08-28: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-02: Wind2020-08-02: Wind2020-08-02: Wind2020-07-22: Wind2020-07-22: Wind2020-07-22: Wind2020-07-22: Wind2020-07-22: Wind2020-07-22: Wind2020-07-22: Wind2020-07-06: Wind2020-07-06: Wind2020-07-06: Wind2020-07-06: Wind2020-07-06: Wind2020-07-06: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-27: Wind2020-06-03: Wind
Lehigh County within Pennsylvania. Dots: HailTornadoFloodWind event locations in the kept record. Boundaries: US Census Bureau.

NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. NCEI storm records through 30 Jun 2026; OpenFEMA declarations refreshed 1 Oct 2026; NFIP claims as of 8 Sep 2026.

Between 1950 and 2026, NCEI recorded 1,342 storm events in Lehigh County, Pennsylvania, led by damaging wind.

That is 388.6 events per 100 square miles, above the Pennsylvania figure of 121.6, and 35.7 per 10,000 residents against 42.0 statewide.

35 events fall in the 12 months to 30 Jun 2026. NCEI attributes 28 deaths and 77 injuries to events in the county, with property damage estimated at $83M and crop damage at $1.1M.

FEMA has designated the county in 17 federal disaster declarations since 1953; the most recent is Covid-19 Pandemic (major disaster, 30 Mar 2020).

National Flood Insurance Program policyholders in the county filed 967 claims since 1978, of which 741 were paid, totalling $12M (about $17K per paid claim). FEMA counts 423 residential flood policies in force.

FEMA's National Risk Index rates the county's overall risk as "Relatively Moderate" and its expected annual loss as "Relatively Moderate" ($128M a year across 18 hazards).

31 tropical storm or hurricane tracks in the HURDAT2 record passed within 100 miles of the county's centre at tropical-storm strength or more, 0 of them within 50 miles at hurricane strength.

35events, last 12 monthsto 30 Jun 2026
1,342events since 195028 deaths, 77 injuries recorded
17disaster declarationslast 30 Mar 2020
967NFIP flood claims$12M paid

Compared with Pennsylvania and the United States

MeasureLehigh CountyPennsylvaniaUS
Recorded events since 19501,34254,4271,977,440
Events per 100 square miles388.6121.656.0
Events per 10,000 residents35.742.059.6
Events in the last 12 months352,02862,008
Deaths recorded by NCEI2890126,435
Property damage (NCEI estimates)$83M$5.3B$575B
NFIP claims per 1,000 residents2.65.98.1
Average paid NFIP claim$17K$23K$43K
Claims per 100 policies in force, last 10 years35.525.916.1

County-recorded events plus zone-recorded events whose forecast zone is named for the county. State and US rows include events recorded only by forecast zone. Rates use 2021 Census population and land area.

Events by decade

Tornado: 2
Hail: 1Wind: 5
Tornado: 1Wind: 5
Hail: 8Tornado: 4Wind: 19
Hail: 3Tornado: 1Flood: 12Wind: 56Winter: 31Heat: 21Cold: 4Drought: 18Fog: 4Other: 19
Hail: 15Tornado: 1Flood: 41Wind: 134Winter: 116Heat: 28Cold: 19Drought: 22Wildfire: 4Lightning: 17Fog: 7Other: 15
Hail: 44Tornado: 3Flood: 49Wind: 170Winter: 116Tropical: 1Heat: 17Cold: 10Drought: 3Wildfire: 3Lightning: 7Fog: 5Other: 16
Hail: 22Tornado: 3Flood: 24Wind: 128Winter: 49Tropical: 1Heat: 4Cold: 1Lightning: 3Fog: 24Other: 6
21950s61960s61970s311980s1691990s4192000s4442010s2652020s
Recorded events in Lehigh County by decade and hazard group. HailTornadoFloodWindWinterTropicalHeatColdDroughtWildfireLightningFogOther NCEI recorded only tornadoes, hail and thunderstorm wind before 1996.

Trend: 880 events in the 20 years to 2025 against 411 in the 20 years before. Reporting practice changed in 1996 and again with automated reports in the 2000s, so decade totals measure the record as much as the weather.

Events by type

Wind517
Winter312
Flood126
Hail93
Heat70
Other56
Drought43
Fog40
Cold34
Lightning27
Tornado15
Wildfire7
Tropical2
HazardEventsDeathsShare of state's events
■ Wind51741.9%detail
■ Winter312133.4%detail
■ Flood12611.8%detail
■ Hail93—1.7%detail
■ Heat7076.7%
■ Other56—8.0%
■ Drought43—5.3%
■ Fog40—8.3%
■ Cold3433.1%
■ Lightning27—4.9%
■ Tornado15—1.4%detail
■ Wildfire7—8.2%
■ Tropical2—2.1%

Hazard pages exist for hail, tornado, flood, wind and winter where the county has at least 10 recorded events. "Other" covers heavy rain, debris flow, dust, funnel clouds and similar reports.

Largest recorded events

DateEvent typeGroupMagnitudeProperty damageCrop damageDeathsInjuriesGeography
29 Oct 2012High WindWind81 mph$3.0M—3—Forecast zone
4 Jul 2012HeatHeat———3—Forecast zone
25 Jan 2026Winter StormWinter———3—Forecast zone
5 Feb 2014Winter StormWinter———21Forecast zone
29 Oct 2011Heavy SnowWinter———2—Forecast zone
22 Jan 2016Winter StormWinter———2—Forecast zone
15 Dec 2007Winter StormWinter———12Forecast zone
7 Jan 1996BlizzardWinter—$2.2M—1—Forecast zone
13 Nov 2003High WindWind58 mph$100K—1—Forecast zone
4 Aug 2020Flash FloodFlood—$3K—1—County
8 Jan 1999Winter WeatherWinter———1—Forecast zone
4 Jul 1999HeatHeat———1—Forecast zone
18 Jan 2005Cold/Wind ChillCold———1—Forecast zone
7 Jun 2008Excessive HeatHeat———1—Forecast zone
5 Jul 2010Excessive HeatHeat———1—Forecast zone
21 Jul 2011Excessive HeatHeat———1—Forecast zone
15 Feb 2015Cold/Wind ChillCold———1—Forecast zone
20 Feb 2015Cold/Wind ChillCold———1—Forecast zone
1 Feb 2021Winter StormWinter———1—Forecast zone
1 Aug 2006HeatHeat————40Forecast zone

Ranked by deaths, then injuries, then NCEI's damage estimate. Deaths and injuries are NCEI counts (direct plus indirect); no personal details are recorded here.

Federal disaster declarations

DeclaredNumberTypeIncidentTitlePrograms
30 Mar 2020DR-4506Major disasterBiologicalCovid-19 PandemicIndividual assistance, Public assistance
13 Mar 2020EM-3441EmergencyBiologicalCovid-19Public assistance
23 Mar 2016DR-4267Major disasterSnowstormSevere Winter Storm And SnowstormPublic assistance
29 Oct 2012EM-3356EmergencyHurricaneHurricane SandyPublic assistance
8 Sep 2011EM-3340EmergencyFloodRemnants Of Tropical Storm LeePublic assistance
3 Sep 2011DR-4025Major disasterHurricaneHurricane IreneIndividual assistance, Public assistance
29 Aug 2011EM-3339EmergencyHurricaneHurricane IrenePublic assistance
10 Sep 2005EM-3235EmergencyHurricaneHurricane KatrinaPublic assistance
19 Sep 2004DR-1557Major disasterHurricaneTropical Depression IvanIndividual assistance, Public assistance
19 Sep 2004DR-1555Major disasterSevere StormSevere Storms And Flooding Associated With Tropical Depression Frances—
14 Mar 2003EM-3180EmergencySevere StormSnowPublic assistance
21 Jan 1996DR-1093Major disasterFloodSevere Storms And FloodingIndividual assistance, Public assistance
13 Jan 1996DR-1085Major disasterSnowstormBlizzard Of 96Public assistance
10 Mar 1994DR-1015Major disasterSevere StormSevere Winter StormsPublic assistance
16 Mar 1993EM-3105EmergencySnowstormSevere Snowfall & Winter StormPublic assistance
23 Jun 1972DR-340Major disasterFloodTropical Storm AgnesIndividual assistance, Public assistance
18 Aug 1965DR-206Major disasterDroughtWater ShortageIndividual assistance, Public assistance

Declarations in which FEMA designated this county, from the OpenFEMA Disaster Declarations Summaries (v2). DR: major disaster; EM: emergency; FM: fire management assistance. Programs show whether individual or public assistance was made available.

Flood insurance claims

197820022026
NFIP claims by year of loss in Lehigh County, 1978 to 2026 (hover for the amount paid).
Claims since 1978967
Paid claims741
Total paid$12M
Average paid claim$17K
Repetitive-loss properties10521 severe
Residential policies in force4230.4% of 115,473 structures
Year of lossClaimsPaid claimsAmount paidAverage paid
202621$10,828$10,828
202522$40,358$20,179
202453$14,850$4,950
202320$0—
202221$6,782$6,782
20211814$437,622$31,259
20208870$3,028,954$43,271
201953$24,774$8,258
20182617$412,973$24,293
201622$44,516$22,258
201522$3,288$1,644
201411$63$63
201332$53,280$26,640
20117454$729,811$13,515
20101711$246,153$22,378
200910$0—
200832$3,811$1,906
200721$7,142$7,142
20061714$174,841$12,489
20056453$1,001,857$18,903
20048069$1,879,905$27,245
200351$333$333
200211$835$835
200143$117,799$39,266
200010$0—

OpenFEMA NFIP claims (v3, as of 8 Sep 2026), aggregated by year of loss; amounts are building, contents and increased-cost-of-compliance payments as recorded. Repetitive-loss counts from the NFIP Multiple Loss Properties file (2 Aug 2026); policies in force from the NFIP Residential Penetration Rates file (3 Aug 2026).

National Risk Index

Overall riskRelatively Moderatescore 93.9 of 100
Expected annual loss$128MRelatively Moderate
Social vulnerabilityRelatively Moderate
Community resilienceRelatively High
Hazard (NRI)Risk ratingExpected annual loss
Inland floodingRelatively High$67,971,322
Cold waveVery High$29,608,412
Heat waveRelatively Moderate$7,268,008
HurricaneRelatively Moderate$6,880,686
TornadoRelatively Moderate$5,244,959
EarthquakeRelatively Low$4,495,798
Strong windRelatively High$2,821,164
LightningRelatively High$1,798,923
Winter weatherVery High$1,439,066
DroughtRelatively Moderate$333,591
Ice stormRelatively Moderate$310,108
HailRelatively Low$148,928
LandslideRelatively Low$13,073
WildfireVery Low$12,672
AvalancheVery Low$17

FEMA National Risk Index, December 2025 release. Ratings are FEMA's relative comparison of counties; expected annual loss is FEMA's modelled estimate of average yearly building, population and agriculture loss. See how to read the NRI.

Hurricane and tropical storm passes

Tracks within 100 miles31
Tracks within 50 miles8
Hurricane strength within 50 miles0
StormYearClosest approachMax wind while within 100 mi
Ida202156 mi40 mph
Fay202074 mi40 mph
Isaias202032 mi63 mph
Sandy201259 mi81 mph
Irene201181 mi63 mph
Hanna200871 mi52 mph
Ernesto200677 mi40 mph
Bertha199664 mi69 mph
Danielle199272 mi40 mph
David197971 mi46 mph
Agnes197294 mi52 mph
Brenda196094 mi58 mph
Connie195595 mi52 mph
Diane195529 mi46 mph
Hazel195489 mi81 mph
Able195233 mi58 mph
Unnamed Atlantic storm194954 mi58 mph
Unnamed Atlantic storm193457 mi46 mph
Unnamed Atlantic storm193374 mi52 mph
Unnamed Atlantic storm192961 mi58 mph
Unnamed Atlantic storm191537 mi58 mph
Unnamed Atlantic storm190334 mi63 mph
Unnamed Atlantic storm189937 mi58 mph
Unnamed Atlantic storm189389 mi86 mph
Unnamed Atlantic storm189336 mi63 mph

HURDAT2 best-track positions at tropical-storm strength (34 kt) or more, measured from the county's Census centre point; through the 2025 season. Distance from a track is not the same as the extent of the storm's wind, rain or surge.

ZIP codes with flood claims

ZIP codes whose NFIP claims carry this county's code, with the number of claims. Five or more claims are needed for a ZIP page to be indexed.

Questions and answers

How often does it hail in Lehigh County, PA?

NCEI records 93 hail events in Lehigh County since 1950, in 25 different years; that is about 1.2 recorded events a year. 14 reports were golf-ball size (1.75 in) or larger.

Has Lehigh County had a tornado?

Yes. NCEI records 15 tornadoes in Lehigh County since 1950, 3 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.

When was the last federal disaster declaration for Lehigh County?

30 Mar 2020: Covid-19 Pandemic, a major disaster declaration for biological. The county appears in 17 declarations since 1953.

How many flood insurance claims have been filed in Lehigh County, and how much was paid?

967 NFIP claims since 1978, 741 of them paid, for $12M in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.

Is Lehigh County in the National Risk Index's high-risk band?

FEMA's National Risk Index (December 2025) rates the county "Relatively Moderate" for overall risk, "Relatively Moderate" for expected annual loss, "Relatively Moderate" for social vulnerability and "Relatively High" for community resilience. These ratings are FEMA's relative comparison across all US counties.

How does Lehigh County compare with the rest of Pennsylvania?

388.6 recorded events per 100 square miles against 121.6 statewide, and 2.6 NFIP claims per 1,000 residents against 5.9. The comparison table on this page shows each measure beside the state and national figures.

Provenance

Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026 (public domain). Declarations: OpenFEMA DisasterDeclarationsSummaries v2, refreshed 1 Oct 2026. Flood claims: OpenFEMA NfipClaims v3 as of 8 Sep 2026; NfipMultipleLossProperties v1 (2 Aug 2026); NfipResidentialPenetrationRates v1 (3 Aug 2026). Risk index: FEMA National Risk Index, December 2025. Hurricane tracks: NHC HURDAT2 through 2025. Population and area: US Census Bureau, 2021 vintage. Built 1 Oct 2026; see the methodology and corrections pages. Hazard hubs: Hail · Tornado · Flood · Wind · Winter.