Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2017
Severe Thunderstorm Watches in Pennsylvania, May 2017
6 severe thunderstorm watches in May 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 May 2017. Tap one for its archive.
- Severe Thunderstorm Watches
- 6
- Busiest day
- May 1, 20172 severe thunderstorm 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 |
|---|---|---|---|---|
| May 1, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more | 5 hr |
| May 1, 6:52 PM EDT | Severe Thunderstorm Watch | SPC | Pike, Wayne | 4 hr |
| May 18, 3:36 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Elk, McKean, Potter, Susquehanna and 2 more | 6 hr |
| May 19, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | Greene, Washington | 6 hr |
| May 28, 1:56 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 6 hr |
| May 30, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Armstrong, Bedford, Blair, Bradford, Cambria and 27 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County2
- Cumberland County2
- Franklin County2
- Perry County2
- Bradford County2
- Cameron County2
- Elk County2
- McKean County2
- Potter County2
- Tioga County2
- Warren County2
- Dauphin County1
- Lancaster County1
- Lebanon County1
- Schuylkill County1
- York County1
- Pike County1
- Wayne County1
- Susquehanna County1
- Greene County1
- Washington County1
- Crawford County1
- Erie County1
- Armstrong County1
- Bedford County1
- Blair County1
- Cambria County1
- Centre County1
- Clarion County1
- Clearfield County1
- Clinton County1
- Fayette County1
- Forest County1
- Fulton County1
- Huntingdon County1
- Indiana County1
- Jefferson County1
- Juniata County1
- Lycoming County1
- Mifflin County1
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.