Weather alerts in Pennsylvania, 2019
3,548 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 3,548
- Warnings
- 1,226
- Watches
- 150
- Advisories
- 676
- Busiest month
- July760 alerts
- Busiest day
- May 29, 2019160 alerts
Over time
By month
The alerts
3,548 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County350
- Montgomery County338
- Chester County302
- Berks County291
- Philadelphia County275
- Delaware County263
- Northampton County250
- Lehigh County246
- York County233
- Lancaster County228
- Allegheny County227
- Westmoreland County220
- Lebanon County214
- Bradford County203
- Monroe County199
- Adams County191
- Dauphin County189
- Schuylkill County188
- Carbon County185
- Franklin County184
- Luzerne County183
- Susquehanna County182
- Cumberland County181
- Wayne County178
- Lycoming County176
- Cambria County175
- Butler County171
- Fayette County171
- Clearfield County167
- Washington County167
- Centre County163
- Huntingdon County163
- Lackawanna County162
- Somerset County161
- Erie County158
- Bedford County158
- Blair County158
- Northumberland County156
- Mercer County156
- Beaver County156
27 more counties
- Clinton County155
- Columbia County155
- Potter County154
- Fulton County154
- Perry County150
- Union County150
- Pike County148
- Tioga County146
- Wyoming County146
- Montour County146
- Crawford County145
- Snyder County143
- Sullivan County142
- Armstrong County142
- Mifflin County141
- Juniata County140
- Venango County140
- Clarion County139
- Cameron County136
- McKean County131
- Lawrence County129
- Elk County126
- Jefferson County121
- Warren County119
- Forest County115
- Indiana County114
- Greene County106
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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. Rebuilt daily.