States › Pennsylvania › 2011
Pennsylvania, 2011
The year's recorded storm events, federal disaster declarations and flood insurance claims.
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.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 2011 was 1,921 against 1,259 in 2010.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 21 Jul 2011 | Philadelphia | Excessive Heat | — | — | 22 | 48 |
| 29 Jul 2011 | Philadelphia | Heat | — | — | 5 | — |
| 7 Sep 2011 | Dauphin | Flood | — | $150,000,000 | 4 | — |
| 29 Oct 2011 | Bucks | Winter Storm | — | — | 4 | 2 |
| 19 Aug 2011 | Allegheny | Flash Flood | — | $500,000 | 4 | 1 |
| 7 Sep 2011 | Lancaster | Flood | — | $800,000 | 3 | — |
| 7 Sep 2011 | Lebanon | Flood | — | $2,000,000 | 2 | — |
| 1 Aug 2011 | Philadelphia | Heat | — | — | 2 | — |
| 29 Oct 2011 | Lehigh | Heavy Snow | — | — | 2 | — |
| 21 Jul 2011 | Montgomery | Excessive Heat | — | — | 2 | — |
| 28 Aug 2011 | Dauphin | Strong Wind | 51 mph | $25,000 | 1 | 1 |
| 7 Sep 2011 | Bradford | Flood | — | $5,000,000 | 1 | — |
| 7 Sep 2011 | York | Flood | — | $4,700,000 | 1 | — |
| 28 Aug 2011 | Monroe | Tropical Storm | — | $175,000 | 1 | — |
| 28 Aug 2011 | Montgomery | Flood | — | $100,000 | 1 | — |
| 8 Jun 2011 | Philadelphia | Excessive Heat | — | $25,000 | 1 | — |
| 25 Aug 2011 | Somerset | Thunderstorm Wind | 58 mph | $5,000 | 1 | — |
| 30 May 2011 | Philadelphia | Heat | — | — | 1 | — |
| 10 Mar 2011 | Schuylkill | Flood | — | — | 1 | — |
| 28 Aug 2011 | Carbon | Flood | — | — | 1 | — |
| 12 Jul 2011 | Philadelphia | Excessive Heat | — | — | 1 | — |
| 29 Oct 2011 | Monroe | Heavy Snow | — | — | 1 | — |
| 29 Oct 2011 | Berks | Heavy Snow | — | — | 1 | — |
| 7 Jul 2011 | Philadelphia | Heat | — | — | 1 | — |
| 21 Jul 2011 | Lehigh | Excessive Heat | — | — | 1 | — |
| 29 Oct 2011 | York | Heavy Snow | — | — | 1 | — |
| 9 Jun 2011 | Lancaster | Lightning | — | — | 1 | — |
| 8 Sep 2011 | Philadelphia | Flash Flood | — | — | 1 | — |
| 21 Jul 2011 | Berks | Excessive Heat | — | — | — | 10 |
| 26 May 2011 | Tioga | Thunderstorm Wind | 81 mph | $5,000 | — | 9 |
| 1 Feb 2011 | Chester | Winter Storm | — | $125,000 | — | 7 |
| 5 Feb 2011 | Northampton | Winter Weather | — | — | — | 5 |
| 8 Sep 2011 | Luzerne | Flood | — | $43,500,000 | — | — |
| 8 Jun 2011 | Lehigh | Heat | — | — | — | 3 |
| 28 Aug 2011 | Wyoming | Flash Flood | — | $23,000,000 | — | — |
| 1 Feb 2011 | Northampton | Winter Storm | — | $200,000 | — | 2 |
| 18 May 2011 | Philadelphia | Tornado | EF0 | $50,000 | — | 2 |
| 16 Apr 2011 | York | Tornado | EF0 | $20,000 | — | 2 |
| 20 Feb 2011 | Monroe | Heavy Snow | — | — | — | 2 |
| 7 Sep 2011 | Wyoming | Flood | — | $20,000,000 | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 2011
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 12 Sep 2011 | DR-4030 | Major disaster | Flood | Tropical Storm Lee | 34 |
| 8 Sep 2011 | EM-3340 | Emergency | Flood | Remnants Of Tropical Storm Lee | 42 |
| 3 Sep 2011 | DR-4025 | Major disaster | Hurricane | Hurricane Irene | 14 |
| 29 Aug 2011 | EM-3339 | Emergency | Hurricane | Hurricane Irene | 13 |
| 13 Jul 2011 | DR-4003 | Major disaster | Severe Storm | Severe Storms And Flooding | 5 |
Flood insurance claims with a 2011 date of loss
10,592 NFIP claims, 9,211 of them paid, for $356,339,816.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.