Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2011

Severe Thunderstorm Warnings in Pennsylvania, April 2011

131 severe thunderstorm warnings in April 2011. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in April 2011. Tap one for its archive.

Severe Thunderstorm Warnings
131
Busiest day
April 28, 201147 severe thunderstorm warnings

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Apr 4, 9:18 AM EDTSevere Thunderstorm WarningCLECrawford, Erie42 min
Apr 4, 9:19 AM EDTSevere Thunderstorm WarningPBZMercer, Venango26 min
Apr 4, 9:51 AM EDTSevere Thunderstorm WarningCTPWarren39 min
Apr 4, 3:16 PM EDTSevere Thunderstorm WarningPBZGreene, Washington29 min
Apr 4, 3:33 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington, Westmoreland42 min
Apr 4, 6:55 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Centre, Huntingdon35 min
Apr 5, 5:01 AM EDTSevere Thunderstorm WarningPHIChester, Delaware74 min
Apr 5, 5:23 AM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more67 min
Apr 5, 10:16 AM EDTSevere Thunderstorm WarningPHIBucks, Delaware, Montgomery, Philadelphia44 min
Apr 16, 4:01 PM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, Dauphin, Franklin, Lancaster, Perry and 1 more59 min
Apr 16, 4:53 PM EDTSevere Thunderstorm WarningCTPCumberland, Franklin, Fulton, Perry37 min
Apr 16, 5:59 PM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, Franklin46 min
Apr 16, 7:47 PM EDTSevere Thunderstorm WarningCTPAdams, Dauphin, Lancaster, York43 min
Apr 16, 8:25 PM EDTSevere Thunderstorm WarningCTPDauphin, Lancaster, Lebanon, York65 min
Apr 16, 8:51 PM EDTSevere Thunderstorm WarningCTPSchuylkill44 min
Apr 16, 9:11 PM EDTSevere Thunderstorm WarningPHIChester64 min
Apr 19, 9:05 PM EDTSevere Thunderstorm WarningCTPBedford, Blair, Cambria, Huntingdon40 min
Apr 20, 4:11 AM EDTSevere Thunderstorm WarningPBZBeaver, Butler, Lawrence, Mercer34 min
Apr 20, 4:37 AM EDTSevere Thunderstorm WarningPBZArmstrong, Butler, Clarion38 min
Apr 25, 1:59 PM EDTSevere Thunderstorm WarningPBZArmstrong, Butler, Clarion, Jefferson46 min
Apr 25, 2:59 PM EDTSevere Thunderstorm WarningPBZJefferson30 min
Apr 25, 3:14 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield, Elk61 min
Apr 25, 4:09 PM EDTSevere Thunderstorm WarningCTPCameron, Clinton, Lycoming, Potter66 min
Apr 25, 4:54 PM EDTSevere Thunderstorm WarningPBZBeaver, Lawrence36 min
Apr 25, 5:23 PM EDTSevere Thunderstorm WarningPBZForest37 min
Apr 25, 5:32 PM EDTSevere Thunderstorm WarningCTPMcKean, Warren58 min
Apr 25, 6:28 PM EDTSevere Thunderstorm WarningCTPMcKean32 min
Apr 25, 7:00 PM EDTSevere Thunderstorm WarningCTPMcKean, Potter30 min
Apr 25, 7:34 PM EDTSevere Thunderstorm WarningCTPElk, McKean, Potter26 min
Apr 25, 8:36 PM EDTSevere Thunderstorm WarningBGMBradford, Susquehanna39 min
Apr 25, 8:44 PM EDTSevere Thunderstorm WarningBGMBradford61 min
Apr 25, 9:15 PM EDTSevere Thunderstorm WarningBGMSusquehanna, Wayne45 min
Apr 25, 10:07 PM EDTSevere Thunderstorm WarningCTPLycoming, Sullivan23 min
Apr 26, 12:55 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Butler, Washington35 min
Apr 26, 1:30 PM EDTSevere Thunderstorm WarningPBZAllegheny, Butler45 min
Apr 26, 2:54 PM EDTSevere Thunderstorm WarningCTPLycoming, Tioga66 min
Apr 26, 3:02 PM EDTSevere Thunderstorm WarningPBZGreene43 min
Apr 26, 3:04 PM EDTSevere Thunderstorm WarningCTPCambria, Clearfield56 min
Apr 26, 3:21 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Somerset54 min
Apr 26, 3:50 PM EDTSevere Thunderstorm WarningPBZAllegheny, Fayette, Greene, Washington, Westmoreland40 min
Apr 26, 4:10 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Centre, Huntingdon65 min
Apr 26, 4:28 PM EDTSevere Thunderstorm WarningPBZArmstrong, Indiana, Westmoreland47 min
Apr 26, 4:40 PM EDTSevere Thunderstorm WarningCTPLycoming, Sullivan, Tioga35 min
Apr 26, 4:44 PM EDTSevere Thunderstorm WarningPBZFayette, Indiana, Westmoreland46 min
Apr 26, 5:03 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Clearfield, Somerset57 min
Apr 26, 5:03 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Lycoming, Potter, Tioga42 min
Apr 26, 5:14 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton61 min
Apr 26, 5:16 PM EDTSevere Thunderstorm WarningPBZIndiana14 min
Apr 26, 5:28 PM EDTSevere Thunderstorm WarningBGMBradford22 min
Apr 26, 5:58 PM EDTSevere Thunderstorm WarningCTPCambria, Centre, Clearfield47 min
Apr 26, 6:14 PM EDTSevere Thunderstorm WarningCTPClinton, Lycoming61 min
Apr 26, 6:44 PM EDTSevere Thunderstorm WarningBGMBradford50 min
Apr 26, 6:58 PM EDTSevere Thunderstorm WarningCTPBedford, Blair, Huntingdon, Juniata, Mifflin62 min
Apr 26, 7:20 PM EDTSevere Thunderstorm WarningCTPLycoming, Sullivan, Tioga55 min
Apr 26, 7:38 PM EDTSevere Thunderstorm WarningCTPCentre, Huntingdon, Juniata, Mifflin, Snyder, Union67 min
Apr 26, 8:22 PM EDTSevere Thunderstorm WarningCTPColumbia, Juniata, Lycoming, Montour, Northumberland, Perry and 2 more68 min
Apr 26, 8:23 PM EDTSevere Thunderstorm WarningBGMBradford, Susquehanna, Wyoming67 min
Apr 26, 8:55 PM EDTSevere Thunderstorm WarningBGMSusquehanna, Wayne65 min
Apr 26, 9:01 PM EDTSevere Thunderstorm WarningCTPColumbia, Lycoming, Montour, Northumberland, Schuylkill, Snyder and 1 more59 min
Apr 26, 9:09 PM EDTSevere Thunderstorm WarningBGMLuzerne, Wyoming51 min
Apr 26, 9:19 PM EDTSevere Thunderstorm WarningBGMSusquehanna, Wayne41 min
Apr 26, 10:02 PM EDTSevere Thunderstorm WarningBGMWayne43 min
Apr 26, 10:07 PM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming68 min
Apr 26, 10:16 PM EDTSevere Thunderstorm WarningBGMLuzerne, Pike37 min
Apr 26, 11:34 PM EDTSevere Thunderstorm WarningPHIBerks, Carbon56 min
Apr 27, 12:34 AM EDTSevere Thunderstorm WarningPHIMonroe, Northampton56 min
Apr 27, 2:31 PM EDTSevere Thunderstorm WarningPHIBucks, Delaware, Montgomery, Philadelphia44 min
Apr 27, 3:46 PM EDTSevere Thunderstorm WarningCLECrawford59 min
Apr 27, 3:55 PM EDTSevere Thunderstorm WarningPBZArmstrong, Butler, Clarion, Forest, Jefferson, Mercer and 1 more65 min
Apr 27, 4:09 PM EDTSevere Thunderstorm WarningCLEErie66 min
Apr 27, 4:30 PM EDTSevere Thunderstorm WarningPBZArmstrong, Indiana30 min
Apr 27, 4:32 PM EDTSevere Thunderstorm WarningPBZAllegheny, Armstrong, Fayette, Indiana, Westmoreland58 min
Apr 27, 4:43 PM EDTSevere Thunderstorm WarningPHIDelaware36 min
Apr 27, 4:50 PM EDTSevere Thunderstorm WarningPBZJefferson25 min
Apr 27, 4:55 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield, Elk, McKean, Potter50 min
Apr 27, 5:01 PM EDTSevere Thunderstorm WarningPBZIndiana44 min
Apr 27, 5:16 PM EDTSevere Thunderstorm WarningPBZJefferson44 min
Apr 27, 5:19 PM EDTSevere Thunderstorm WarningCTPElk, McKean, Warren26 min
Apr 27, 5:43 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Cameron, Centre, Clearfield, Clinton and 5 more62 min
Apr 27, 5:52 PM EDTSevere Thunderstorm WarningCTPCumberland, Franklin, Fulton, Huntingdon, Juniata, Mifflin and 1 more53 min
Apr 27, 6:45 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Cameron, Centre, Clearfield, Clinton and 6 more60 min
Apr 27, 7:12 PM EDTSevere Thunderstorm WarningCTPDauphin, Juniata, Northumberland, Perry, Snyder63 min
Apr 27, 7:48 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Columbia, Lycoming, Montour, Northumberland and 5 more57 min
Apr 27, 7:50 PM EDTSevere Thunderstorm WarningBGMBradford55 min
Apr 27, 8:22 PM EDTSevere Thunderstorm WarningBGMBradford53 min
Apr 27, 8:22 PM EDTSevere Thunderstorm WarningCTPColumbia, Montour, Northumberland53 min
Apr 27, 8:46 PM EDTSevere Thunderstorm WarningCTPColumbia, Lycoming, Sullivan, Tioga44 min
Apr 27, 9:02 PM EDTSevere Thunderstorm WarningBGMBradford, Susquehanna, Wyoming43 min
Apr 27, 9:09 PM EDTSevere Thunderstorm WarningBGMLuzerne, Susquehanna, Wyoming51 min
Apr 27, 9:40 PM EDTSevere Thunderstorm WarningBGMSusquehanna41 min
Apr 27, 10:36 PM EDTSevere Thunderstorm WarningBGMWayne54 min
Apr 27, 11:25 PM EDTSevere Thunderstorm WarningCTPCentre, Clearfield, Clinton37 min
Apr 28, 12:26 AM EDTSevere Thunderstorm WarningCTPBedford, Somerset64 min
Apr 28, 12:33 AM EDTSevere Thunderstorm WarningCTPLycoming, Tioga57 min
Apr 28, 1:21 AM EDTSevere Thunderstorm WarningCTPBedford, Blair, Huntingdon, Mifflin39 min
Apr 28, 1:22 AM EDTSevere Thunderstorm WarningBGMBradford53 min
Apr 28, 1:35 AM EDTSevere Thunderstorm WarningCTPLycoming, Sullivan25 min
Apr 28, 2:13 AM EDTSevere Thunderstorm WarningBGMBradford47 min
Apr 28, 2:52 AM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Cumberland, Franklin, Juniata, Mifflin and 3 more53 min
Apr 28, 3:37 AM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Dauphin, Juniata, Lycoming, Montour and 4 more38 min
Apr 28, 3:46 AM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 1 more44 min
Apr 28, 3:51 AM EDTSevere Thunderstorm WarningBGMBradford, Susquehanna, Wyoming54 min
Apr 28, 4:00 AM EDTSevere Thunderstorm WarningCTPColumbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 1 more60 min
Apr 28, 4:21 AM EDTSevere Thunderstorm WarningBGMLuzerne, Susquehanna, Wyoming54 min
Apr 28, 4:28 AM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, Dauphin, Lancaster, Lebanon, Schuylkill and 1 more47 min
Apr 28, 4:36 AM EDTSevere Thunderstorm WarningPHIBerks, Carbon, Lehigh, Monroe, Northampton54 min
Apr 28, 4:47 AM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne, Susquehanna, Wayne, Wyoming43 min
Apr 28, 5:14 AM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, Franklin, York46 min
Apr 28, 5:39 AM EDTSevere Thunderstorm WarningBGMLackawanna, Pike, Susquehanna, Wayne66 min
Apr 28, 5:49 AM EDTSevere Thunderstorm WarningCTPDauphin, Lebanon, Schuylkill56 min
Apr 28, 6:18 AM EDTSevere Thunderstorm WarningPHICarbon, Monroe57 min
Apr 28, 6:48 AM EDTSevere Thunderstorm WarningBGMPike, Wayne42 min
Apr 28, 6:53 AM EDTSevere Thunderstorm WarningCTPLebanon, Schuylkill37 min
Apr 28, 6:56 AM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more34 min
Apr 28, 8:17 AM EDTSevere Thunderstorm WarningCTPLancaster, York58 min
Apr 28, 8:22 AM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne, Wyoming38 min
Apr 28, 8:54 AM EDTSevere Thunderstorm WarningCTPLancaster, York66 min
Apr 28, 8:55 AM EDTSevere Thunderstorm WarningBGMLackawanna, Susquehanna, Wayne50 min
Apr 28, 8:55 AM EDTSevere Thunderstorm WarningPHIBerks, Lehigh65 min
Apr 28, 9:23 AM EDTSevere Thunderstorm WarningBGMWayne37 min
Apr 28, 9:27 AM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne, Pike, Wayne48 min
Apr 28, 9:33 AM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton57 min
Apr 28, 9:58 AM EDTSevere Thunderstorm WarningBGMPike, Wayne47 min
Apr 28, 10:00 AM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery60 min
Apr 28, 10:03 AM EDTSevere Thunderstorm WarningCTPLancaster, York27 min
Apr 28, 10:12 AM EDTSevere Thunderstorm WarningBGMPike48 min
Apr 28, 10:25 AM EDTSevere Thunderstorm WarningPHIBucks, Carbon, Lehigh, Monroe, Northampton50 min
Apr 28, 10:35 AM EDTSevere Thunderstorm WarningCTPLancaster10 min
Apr 28, 10:57 AM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery, Northampton63 min
Apr 28, 11:11 AM EDTSevere Thunderstorm WarningPHINorthampton64 min
Apr 28, 12:11 PM EDTSevere Thunderstorm WarningPHIBucks, Chester, Delaware, Montgomery31 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

27 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20102012

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.