Alert archive / Pennsylvania / Severe Thunderstorm Watches

Severe Thunderstorm Watches in Pennsylvania, 2017

32 severe thunderstorm watches in 2017. 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 watches reaches back to 1997.

Severe Thunderstorm Watches by county

Each county as a circle sized by its count in 2017. Tap one for its archive.

Severe Thunderstorm Watches
32
Busiest month
July8 severe thunderstorm watches
Busiest day
February 25, 20172 severe thunderstorm watches

Over time

By month

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
Feb 25, 1:30 PM ESTSevere Thunderstorm WatchSPCAdams, Berks, Chester, Cumberland, Dauphin, Delaware and 6 more6 hr
Feb 25, 2:46 PM ESTSevere Thunderstorm WatchSPCBucks, Carbon, Lackawanna, Lehigh, Luzerne, Monroe and 3 more5 hr
Mar 1, 10:38 AM ESTSevere Thunderstorm WatchSPCAdams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 5 more4 hr
Mar 1, 1:13 PM ESTSevere Thunderstorm WatchSPCBerks, Bucks, Chester, Delaware, Montgomery, Philadelphia4 hr
Apr 6, 12:45 PM EDTSevere Thunderstorm WatchSPCBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
May 1, 5:54 PM EDTSevere Thunderstorm WatchSPCAdams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more5 hr
May 1, 6:52 PM EDTSevere Thunderstorm WatchSPCPike, Wayne4 hr
May 18, 3:36 PM EDTSevere Thunderstorm WatchSPCBradford, Cameron, Elk, McKean, Potter, Susquehanna and 2 more6 hr
May 19, 3:13 PM EDTSevere Thunderstorm WatchSPCGreene, Washington6 hr
May 28, 1:56 PM EDTSevere Thunderstorm WatchSPCCrawford, Erie6 hr
May 30, 12:39 PM EDTSevere Thunderstorm WatchSPCAdams, Armstrong, Bedford, Blair, Bradford, Cambria and 27 more6 hr
Jun 18, 1:37 PM EDTSevere Thunderstorm WatchSPCAllegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 17 more8 hr
Jun 19, 11:13 AM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 22 more9 hr
Jun 23, 2:20 PM EDTSevere Thunderstorm WatchSPCAdams, Allegheny, Bedford, Blair, Cambria, Cumberland and 19 more8 hr
Jun 23, 5:09 PM EDTSevere Thunderstorm WatchSPCBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more4 hr
Jun 30, 1:41 PM EDTSevere Thunderstorm WatchSPCLackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming7 hr
Jul 1, 1:19 PM EDTSevere Thunderstorm WatchSPCBradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more8 hr
Jul 1, 1:34 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 21 more7 hr
Jul 7, 1:27 PM EDTSevere Thunderstorm WatchSPCFayette, Greene, Washington8 hr
Jul 13, 2:57 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 17 more6 hr
Jul 14, 1:40 PM EDTSevere Thunderstorm WatchSPCAdams, Bedford, Chester, Cumberland, Delaware, Franklin and 5 more7 hr
Jul 17, 12:48 PM EDTSevere Thunderstorm WatchSPCBradford, Susquehanna7 hr
Jul 20, 1:11 PM EDTSevere Thunderstorm WatchSPCBradford, Columbia, Lackawanna, Luzerne, Lycoming, Pike and 5 more6 hr
Jul 20, 5:03 PM EDTSevere Thunderstorm WatchSPCBerks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 2 more5 hr
Aug 4, 1:25 PM EDTSevere Thunderstorm WatchSPCAdams, Allegheny, Armstrong, Beaver, Bedford, Blair and 45 more8 hr
Aug 12, 2:44 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bradford, Bucks, Carbon, Chester and 28 more5 hr
Aug 18, 2:27 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 21 more9 hr
Aug 19, 2:45 PM EDTSevere Thunderstorm WatchSPCAdams, Allegheny, Armstrong, Beaver, Bedford, Blair and 36 more6 hr
Aug 22, 12:39 PM EDTSevere Thunderstorm WatchSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 16 more8 hr
Aug 22, 4:19 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 26 more8 hr
Sep 5, 3:26 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bucks, Carbon, Chester, Cumberland and 13 more5 hr
Nov 5, 5:28 PM ESTSevere Thunderstorm WatchSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 8 more5 hr

By county

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

27 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. February 25, 20172severe thunderstorm watches
  2. March 1, 20172severe thunderstorm watches
  3. May 1, 20172severe thunderstorm watches
  4. June 23, 20172severe thunderstorm watches
  5. July 1, 20172severe thunderstorm watches
  6. July 20, 20172severe thunderstorm watches
  7. August 22, 20172severe thunderstorm watches
  8. April 6, 20171severe thunderstorm watches
  9. May 18, 20171severe thunderstorm watches
  10. May 19, 20171severe thunderstorm watches
  11. May 28, 20171severe thunderstorm watches
  12. May 30, 20171severe thunderstorm watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20162018

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.