Alert archive / Pennsylvania / Tornado Watches
Tornado Watches in Pennsylvania, 2018
3 tornado watches in 2018. 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 2018. Tap one for its archive.
- Tornado Watches
- 3
- Busiest month
- May2 tornado watches
- Busiest day
- May 12, 20181 tornado 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 |
|---|---|---|---|---|
| May 12, 4:58 PM EDT | Tornado Watch | SPC | Berks, Bucks, Chester, Dauphin, Delaware, Lancaster and 4 more | 5 hr |
| May 15, 1:03 PM EDT | Tornado Watch | SPC | Lackawanna, Pike, Susquehanna, Wayne | 4 hr |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 56 more | 8 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Berks County2
- Dauphin County2
- Lancaster County2
- Lebanon County2
- York County2
- Lackawanna County2
- Pike County2
- Susquehanna County2
- Wayne County2
- Bucks County1
- Chester County1
- Delaware County1
- Montgomery County1
- Philadelphia County1
- Adams County1
- Allegheny County1
- Armstrong County1
- Beaver County1
- Bedford County1
- Blair County1
- Bradford County1
- Butler County1
- Cambria County1
- Cameron County1
- Carbon County1
- Centre County1
- Clarion County1
- Clearfield County1
- Clinton County1
- Columbia County1
- Crawford County1
- Cumberland County1
- Elk County1
- Erie County1
- Fayette County1
- Forest County1
- Franklin County1
- Fulton County1
- Greene County1
- Huntingdon County1
27 more counties
- Indiana County1
- Jefferson County1
- Juniata County1
- Lawrence County1
- Lehigh County1
- Luzerne County1
- Lycoming County1
- McKean County1
- Mercer County1
- Mifflin County1
- Monroe County1
- Montour County1
- Northampton County1
- Northumberland County1
- Perry County1
- Potter County1
- Schuylkill County1
- Snyder County1
- Somerset County1
- Sullivan County1
- Tioga County1
- Union County1
- Venango County1
- Warren County1
- Washington County1
- Westmoreland County1
- Wyoming County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.