Weather alerts in Pennsylvania, 2015
2,325 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 2,325
- Warnings
- 635
- Watches
- 139
- Advisories
- 524
- Busiest month
- June714 alerts
- Busiest day
- June 23, 2015119 alerts
Over time
By month
The alerts
2,325 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 County218
- Lancaster County203
- Montgomery County203
- Westmoreland County202
- Allegheny County197
- Bucks County197
- Berks County196
- York County191
- Lebanon County183
- Dauphin County173
- Philadelphia County173
- Delaware County171
- Monroe County168
- Adams County167
- Cumberland County166
- Lehigh County166
- Northampton County162
- Butler County161
- Clearfield County159
- Centre County158
- Northumberland County155
- Schuylkill County153
- Fayette County152
- Cambria County151
- Washington County151
- Huntingdon County149
- Franklin County146
- Blair County145
- Lycoming County145
- Perry County144
- Snyder County144
- Union County143
- Armstrong County143
- Clinton County142
- Beaver County139
- Carbon County138
- Columbia County136
- Mifflin County135
- Somerset County130
- Montour County129
27 more counties
- Lawrence County128
- Elk County126
- Juniata County126
- Bedford County125
- Cameron County125
- McKean County120
- Clarion County120
- Jefferson County120
- Fulton County119
- Erie County115
- Tioga County115
- Potter County109
- Sullivan County108
- Greene County107
- Pike County106
- Warren County102
- Venango County102
- Lackawanna County97
- Luzerne County97
- Mercer County96
- Forest County94
- Wayne County92
- Crawford County88
- Bradford County87
- Susquehanna County87
- Wyoming County85
- Indiana County85
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.