Weather alerts in Pennsylvania, 2013
2,635 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 2,635
- Warnings
- 834
- Watches
- 143
- Advisories
- 562
- Busiest month
- June541 alerts
- Busiest day
- June 28, 201389 alerts
Over time
By month
The alerts
2,635 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.
- Chester County240
- Westmoreland County235
- Centre County227
- Allegheny County226
- Montgomery County210
- Clearfield County208
- Fayette County204
- Bucks County201
- Lancaster County200
- Clinton County198
- Delaware County197
- Lycoming County191
- Dauphin County189
- Washington County188
- Armstrong County187
- Berks County185
- Cambria County184
- Jefferson County182
- Huntingdon County181
- Philadelphia County181
- York County180
- Butler County179
- Cumberland County178
- Somerset County178
- Juniata County176
- Beaver County173
- Mifflin County172
- Blair County171
- Perry County170
- Northumberland County168
- Snyder County167
- Lehigh County166
- Franklin County165
- Lebanon County164
- Union County164
- Potter County162
- Elk County160
- Monroe County160
- Northampton County160
- Schuylkill County156
27 more counties
- Sullivan County156
- Cameron County154
- Carbon County154
- Clarion County153
- Bedford County153
- McKean County151
- Venango County150
- Adams County149
- Columbia County147
- Tioga County145
- Fulton County143
- Bradford County143
- Montour County142
- Susquehanna County138
- Lawrence County134
- Crawford County134
- Warren County133
- Wayne County133
- Erie County133
- Mercer County132
- Indiana County131
- Forest County129
- Greene County125
- Lackawanna County122
- Luzerne County118
- Wyoming County118
- Pike County100
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20122014
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.