Alert archive / Pennsylvania / Tornado Watches / 2011
Tornado Watches in Pennsylvania, April 2011
2 tornado watches 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count in April 2011. Tap one for its archive.
- Tornado Watches
- 2
- Busiest day
- April 16, 20111 tornado watches
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 4:41 PM EDT | Tornado Watch | SPC | Adams, Bedford, Berks, Blair, Chester, Cumberland and 13 more | 6 hr |
| Apr 27, 3:10 PM EDT | Tornado Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 43 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County2
- Bedford County2
- Blair County2
- Cumberland County2
- Dauphin County2
- Franklin County2
- Fulton County2
- Huntingdon County2
- Juniata County2
- Lancaster County2
- Lebanon County2
- Mifflin County2
- Perry County2
- Schuylkill County2
- Snyder County2
- York County2
- Berks County1
- Chester County1
- Delaware County1
- Allegheny County1
- Armstrong County1
- Beaver County1
- Bradford County1
- Butler County1
- Cambria County1
- Cameron County1
- Centre County1
- Clarion County1
- Clearfield County1
- Clinton County1
- Columbia County1
- Elk County1
- Fayette County1
- Forest County1
- Greene County1
- Indiana County1
- Jefferson County1
- Lawrence County1
- Lycoming County1
- McKean County1
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.