Alert archive / Pennsylvania / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Pennsylvania, 2003
41 severe thunderstorm watches in 2003. 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 2003. Tap one for its archive.
- Severe Thunderstorm Watches
- 41
- Busiest month
- July17 severe thunderstorm watches
- Busiest day
- July 21, 20034 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 12:05 AM EST | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clearfield, Greene and 4 more | 5 hr |
| May 1, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 15 more | 6 hr |
| May 7, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Armstrong, Bedford, Blair, Cambria, Centre and 17 more | 6 hr |
| May 8, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Fayette, Franklin, Fulton, Greene and 2 more | 5 hr |
| May 23, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 6 hr |
| May 31, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 11 more | 5 hr |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Clarion, Crawford, Forest and 5 more | 5 hr |
| Jun 12, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Bucks, Chester, Cumberland and 15 more | 7 hr |
| Jun 14, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 13 more | 6 hr |
| Jun 26, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 7 hr |
| Jul 4, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 18 more | 6 hr |
| Jul 7, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 8 more | 5 hr |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 14 more | 6 hr |
| Jul 7, 9:55 PM EDT | Severe Thunderstorm Watch | SPC | Beaver, Lawrence | 3 hr |
| Jul 8, 3:20 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 6 hr |
| Jul 8, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 5 hr |
| Jul 8, 8:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Bedford, Blair, Butler and 26 more | 4 hr |
| Jul 9, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Delaware, Philadelphia | 8 hr |
| Jul 10, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Fayette, Fulton, Greene, Somerset, Washington and 1 more | 6 hr |
| Jul 12, 12:40 PM EDT | Severe Thunderstorm Watch | SPC | Greene, Washington | 5 hr |
| Jul 18, 1:55 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 2 more | 6 hr |
| Jul 21, 8:40 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Greene and 4 more | 5 hr |
| Jul 21, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 38 more | 6 hr |
| Jul 21, 3:35 PM EDT | Severe Thunderstorm Watch | SPC | Lackawanna, Wayne | 6 hr |
| Jul 21, 6:30 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Lehigh, Monroe, Northampton, Pike | 5 hr |
| Jul 22, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Delaware, Montgomery, Philadelphia | 5 hr |
| Jul 27, 6:05 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 31 more | 5 hr |
| Aug 16, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 21 more | 6 hr |
| Aug 16, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Crawford, Greene, Lawrence, Mercer and 1 more | 6 hr |
| Aug 22, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia and 1 more | 7 hr |
| Aug 26, 9:10 AM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Cameron, Clarion, Clearfield and 14 more | 5 hr |
| Aug 26, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 17 more | 5 hr |
| Aug 26, 9:20 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington | 6 hr |
| Aug 27, 9:40 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 31 more | 5 hr |
| Aug 27, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington, Westmoreland | 5 hr |
| Aug 27, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Franklin, Fulton, Somerset | 7 hr |
| Aug 29, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Cameron, Centre, Clarion and 14 more | 5 hr |
| Aug 29, 3:50 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Lebanon and 3 more | 5 hr |
| Aug 30, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Delaware | 5 hr |
| Sep 27, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 11 more | 5 hr |
| Nov 12, 7:20 PM EST | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 18 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Washington County23
- Beaver County21
- Greene County20
- Allegheny County19
- Butler County19
- Lawrence County19
- Armstrong County18
- Westmoreland County16
- Clarion County16
- Mercer County15
- Fayette County15
- Clearfield County14
- Jefferson County14
- Venango County14
- Somerset County13
- Indiana County12
- Crawford County11
- Forest County11
- Fulton County11
- Cameron County10
- Bedford County10
- Cambria County10
- Franklin County10
- Huntingdon County10
- Elk County9
- Adams County9
- Centre County9
- Delaware County9
- Warren County8
- Blair County8
- Cumberland County8
- Juniata County8
- Perry County8
- York County8
- Bucks County8
- Philadelphia County8
- McKean County7
- Potter County7
- Clinton County7
- Mifflin County7
27 more counties
- Union County7
- Lancaster County7
- Lebanon County7
- Montgomery County7
- Tioga County6
- Dauphin County6
- Snyder County6
- Berks County6
- Chester County6
- Lycoming County6
- Erie County4
- Lehigh County4
- Columbia County4
- Northampton County4
- Northumberland County4
- Schuylkill County4
- Monroe County3
- Pike County3
- Montour County3
- Carbon County2
- Bradford County2
- Sullivan County2
- Susquehanna County2
- Wyoming County2
- Wayne County2
- Luzerne County1
- Lackawanna County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20022004
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.