Weather alerts in Pennsylvania, 2012
3,024 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 3,024
- Warnings
- 838
- Watches
- 168
- Advisories
- 471
- Busiest month
- July789 alerts
- Busiest day
- July 26, 2012110 alerts
Over time
By month
The alerts
3,024 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.
- Westmoreland County253
- Delaware County251
- Philadelphia County245
- Monroe County240
- Northampton County235
- Berks County235
- Lehigh County229
- Bucks County221
- York County221
- Allegheny County220
- Lancaster County218
- Carbon County206
- Fayette County202
- Cumberland County202
- Montgomery County201
- Dauphin County194
- Adams County191
- Franklin County191
- Somerset County187
- Bedford County185
- Clearfield County182
- Chester County182
- Perry County180
- Butler County178
- Washington County177
- Beaver County175
- Lebanon County175
- Armstrong County173
- Lycoming County173
- Huntingdon County173
- Cambria County172
- Centre County169
- Schuylkill County167
- Clinton County165
- Mercer County158
- Fulton County158
- Northumberland County157
- Juniata County156
- McKean County154
- Union County154
27 more counties
- Snyder County152
- Lawrence County151
- Venango County150
- Blair County150
- Jefferson County147
- Cameron County146
- Clarion County146
- Wayne County145
- Elk County144
- Columbia County144
- Luzerne County143
- Montour County142
- Mifflin County142
- Potter County141
- Pike County138
- Tioga County136
- Lackawanna County136
- Warren County134
- Susquehanna County134
- Bradford County133
- Greene County127
- Forest County125
- Sullivan County120
- Crawford County118
- Erie County115
- Wyoming County115
- Indiana County112
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.