Alert archive / Pennsylvania / 2020

Weather alerts in Pennsylvania, September 2020

67 weather alerts in September 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in September 2020. Tap one for its archive.

Alerts
67
Warnings
4
Watches
5
Advisories
33
Busiest day
September 3, 202017 alerts

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
Sep 2, 3:37 PM EDTMesoscale DiscussionSPCAdams, Chester, Cumberland, Dauphin, Franklin, Lancaster and 2 more53 min
Sep 2, 6:43 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Chester, Cumberland, Dauphin, Delaware and 5 more5 hr
Sep 2, 7:18 PM EDTSpecial Weather StatementCTPYork27 min
Sep 2, 7:58 PM EDTSpecial Weather StatementCTPLancaster32 min
Sep 2, 8:07 PM EDTSpecial Weather StatementCTPSullivan38 min
Sep 2, 8:07 PM EDTSevere Thunderstorm WarningPHIChester53 min
Sep 2, 8:20 PM EDTMesoscale DiscussionSPCBerks, Bucks, Chester, Delaware, Lancaster, Montgomery and 1 more115 min
Sep 2, 8:44 PM EDTSpecial Weather StatementCTPSullivan31 min
Sep 2, 9:13 PM EDTSpecial Weather StatementBGMLuzerne47 min
Sep 3, 4:23 AM EDTBeach Hazards StatementCLEErie61 hr
Sep 3, 12:20 PM EDTSpecial Weather StatementPBZFayette25 min
Sep 3, 3:06 PM EDTMesoscale DiscussionSPCAdams, Chester, Cumberland, Delaware, Franklin, Fulton and 3 more114 min
Sep 3, 3:42 PM EDTTornado WatchSPCAdams, Berks, Bucks, Chester, Cumberland, Dauphin and 8 more6 hr
Sep 3, 4:47 PM EDTSpecial Weather StatementCTPAdams28 min
Sep 3, 5:11 PM EDTSpecial Weather StatementCTPYork34 min
Sep 3, 5:30 PM EDTSevere Thunderstorm WarningCTPLancaster, York30 min
Sep 3, 5:40 PM EDTSpecial Weather StatementCTPBerks35 min
Sep 3, 6:13 PM EDTSpecial Weather StatementCTPLancaster47 min
Sep 3, 7:14 PM EDTSpecial Weather StatementPHIBucks46 min
Sep 3, 7:16 PM EDTSpecial Weather StatementPHIMontgomery44 min
Sep 3, 7:17 PM EDTSpecial Weather StatementPHIDelaware, Philadelphia43 min
Sep 6, 3:30 PM EDTBeach Hazards StatementCLEErie29 hr
Sep 7, 11:20 AM EDTSpecial Weather StatementPBZMercer25 min
Sep 7, 11:46 AM EDTSevere Thunderstorm WarningPBZLawrence, Mercer, Venango29 min
Sep 7, 11:53 AM EDTAreal Flood AdvisoryPBZLawrence, Mercer3 hr
Sep 7, 1:44 PM EDTAreal Flood AdvisoryPBZLawrence3 hr
Sep 7, 3:22 PM EDTAreal Flood AdvisoryPBZButler113 min
Sep 8, 3:48 PM EDTBeach Hazards StatementCLEErie6 hr
Sep 9, 5:08 PM EDTFlash Flood WatchPHIBerks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more29 hr
Sep 10, 3:15 AM EDTDense Fog AdvisoryCLEErie7 hr
Sep 10, 1:38 PM EDTFlash Flood WatchCTPAdams, Dauphin, Lancaster, Lebanon, York6 hr
Sep 10, 1:56 PM EDTAreal Flood AdvisoryCTPLancaster, York2 hr
Sep 10, 3:07 PM EDTAreal Flood AdvisoryPHIBerks, Lehigh, Montgomery3 hr
Sep 10, 4:02 PM EDTAreal Flood AdvisoryCTPLancaster, York118 min
Sep 10, 4:20 PM EDTAreal Flood AdvisoryCTPAdams2 hr
Sep 10, 5:04 PM EDTAreal Flood AdvisoryPHIBucks, Chester, Montgomery3 hr
Sep 10, 9:27 PM EDTBeach Hazards StatementCLEErie29 hr
Sep 13, 10:16 AM EDTBeach Hazards StatementCLEErie27 hr
Sep 14, 3:28 AM EDTFrost AdvisoryCTPMcKean29 hr
Sep 16, 3:59 PM EDTBeach Hazards StatementCLEErie60 hr
Sep 18, 3:12 AM EDTFrost AdvisoryBGMBradford, Lackawanna, Pike, Susquehanna, Wayne, Wyoming29 hr
Sep 18, 3:31 AM EDTFrost AdvisoryCTPCameron, Clearfield, Sullivan, Tioga, Warren28 hr
Sep 18, 3:31 AM EDTFreeze WatchCTPElk, McKean, Potter10 hr
Sep 18, 9:12 AM EDTFrost AdvisoryPBZClarion, Forest, Jefferson, Mercer, Venango24 hr
Sep 18, 1:03 PM EDTFreeze WarningCTPElk, McKean, Potter19 hr
Sep 18, 2:53 PM EDTFrost AdvisoryCLECrawford, Erie18 hr
Sep 19, 12:53 PM EDTFrost AdvisoryCTPAdams, Bedford, Blair, Cambria, Centre, Clearfield and 20 more20 hr
Sep 19, 1:17 PM EDTFrost AdvisoryPBZArmstrong, Butler, Clarion, Fayette, Forest, Jefferson and 4 more20 hr
Sep 19, 2:46 PM EDTFrost AdvisoryPHICarbon, Lehigh, Monroe, Northampton17 hr
Sep 19, 3:04 PM EDTFrost AdvisoryBGMBradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more18 hr
Sep 19, 3:04 PM EDTFrost AdvisoryCLECrawford, Erie18 hr
Sep 20, 11:59 AM EDTFrost AdvisoryCTPAdams, Bedford, Blair, Cambria, Centre, Clearfield and 18 more21 hr
Sep 20, 12:12 PM EDTFrost AdvisoryPBZArmstrong, Butler, Clarion, Forest, Jefferson, Venango21 hr
Sep 20, 2:41 PM EDTFrost AdvisoryBGMBradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more18 hr
Sep 20, 3:16 PM EDTFrost AdvisoryPHICarbon, Lehigh, Monroe, Northampton15 hr
Sep 21, 1:35 PM EDTFrost AdvisoryCTPAdams, Bedford, Blair, Cambria, Clinton, Columbia and 16 more19 hr
Sep 21, 2:26 PM EDTFrost AdvisoryBGMLackawanna, Luzerne, Pike, Wayne19 hr
Sep 21, 3:35 PM EDTFrost AdvisoryPBZClarion, Fayette, Forest, Jefferson, Westmoreland17 hr
Sep 25, 8:01 AM EDTDense Fog AdvisoryPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more119 min
Sep 28, 9:32 AM EDTBeach Hazards StatementCLEErie25 hr
Sep 29, 3:26 PM EDTAreal Flood AdvisoryPHIDelaware3 hr
Sep 29, 6:20 PM EDTAreal Flood AdvisoryPHIBucks, Philadelphia3 hr
Sep 29, 9:24 PM EDTAreal Flood AdvisoryPHIBerks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more4 hr
Sep 29, 10:17 PM EDTAreal Flood AdvisoryPHIBerks, Carbon, Lehigh, Northampton3 hr
Sep 30, 1:46 AM EDTAreal Flood AdvisoryPHIBucks, Delaware, Philadelphia3 hr
Sep 30, 2:37 AM EDTAreal Flood AdvisoryPHIBucks, Montgomery4 hr
Sep 30, 5:10 AM EDTBeach Hazards StatementCLEErie41 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

By county

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

22 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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. Rebuilt daily.