Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2011

Severe Thunderstorm Warnings in Pennsylvania, May 2011

143 severe thunderstorm warnings in May 2011. 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 severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in May 2011. Tap one for its archive.

Severe Thunderstorm Warnings: 143
Busiest day: May 26, 201146 severe thunderstorm warnings

Over time

By day

Days in UTC, the clock the archive keeps.

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 3, 5:56 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Juniata, Mifflin, Perry, Snyder	34 min
May 3, 6:29 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Cumberland, Dauphin, Juniata, Lycoming, Montour and 4 more	31 min
May 3, 7:45 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Northumberland, Schuylkill	60 min
May 3, 8:06 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	54 min
May 3, 8:15 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	30 min
May 10, 10:19 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	28 min
May 12, 6:05 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	25 min
May 12, 6:42 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	48 min
May 13, 2:52 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	38 min
May 13, 3:22 PM EDT	Severe Thunderstorm Warning	CLE	Erie	38 min
May 13, 3:53 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	67 min
May 15, 3:37 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	53 min
May 15, 3:39 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	44 min
May 15, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	56 min
May 15, 5:03 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Monroe, Northampton	57 min
May 15, 5:46 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	59 min
May 15, 7:04 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	26 min
May 15, 11:18 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	57 min
May 17, 6:50 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Fulton, Huntingdon	40 min
May 18, 1:37 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	53 min
May 18, 2:27 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	48 min
May 18, 2:53 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	52 min
May 18, 3:11 PM EDT	Severe Thunderstorm Warning	CTP	York	49 min
May 18, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	64 min
May 18, 6:52 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Snyder, Union	38 min
May 19, 1:29 PM EDT	Severe Thunderstorm Warning	PHI	Berks	61 min
May 19, 1:41 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lebanon, Northumberland, Schuylkill	49 min
May 19, 2:22 PM EDT	Severe Thunderstorm Warning	PHI	Berks	41 min
May 19, 3:12 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	63 min
May 19, 3:37 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	53 min
May 19, 4:06 PM EDT	Severe Thunderstorm Warning	PHI	Philadelphia	54 min
May 19, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	55 min
May 19, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	50 min
May 23, 4:09 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Juniata, Mifflin, Snyder, Union	66 min
May 23, 4:53 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Columbia, Lycoming, Montour, Northumberland and 3 more	52 min
May 23, 5:06 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Northumberland, Perry, Schuylkill, Snyder	54 min
May 23, 6:02 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Schuylkill, Sullivan	58 min
May 23, 6:12 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	63 min
May 23, 6:15 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland, Schuylkill, Snyder	60 min
May 23, 6:27 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	34 min
May 23, 6:32 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	48 min
May 23, 7:22 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	38 min
May 23, 7:49 PM EDT	Severe Thunderstorm Warning	CLE	Erie	56 min
May 23, 8:31 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	59 min
May 23, 8:44 PM EDT	Severe Thunderstorm Warning	CLE	Erie	46 min
May 23, 8:51 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	39 min
May 23, 8:52 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	53 min
May 23, 11:18 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	42 min
May 24, 12:09 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	51 min
May 24, 12:43 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	17 min
May 25, 7:50 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	55 min
May 25, 8:37 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	53 min
May 25, 8:42 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	63 min
May 25, 9:19 PM EDT	Severe Thunderstorm Warning	CTP	Warren	56 min
May 25, 9:19 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Venango	56 min
May 25, 9:25 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	35 min
May 25, 9:42 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Lawrence and 2 more	63 min
May 25, 10:10 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	35 min
May 25, 10:14 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	61 min
May 25, 11:10 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Clinton, Elk, McKean, Potter	65 min
May 25, 11:24 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter, Tioga	66 min
May 26, 12:13 AM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	62 min
May 26, 12:25 AM EDT	Severe Thunderstorm Warning	BGM	Bradford	35 min
May 26, 12:25 AM EDT	Severe Thunderstorm Warning	PBZ	Mercer	35 min
May 26, 12:53 AM EDT	Severe Thunderstorm Warning	CLE	Crawford	67 min
May 26, 1:12 AM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	63 min
May 26, 2:19 AM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	53 min
May 26, 3:19 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Snyder, Union	56 min
May 26, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan	49 min
May 26, 4:15 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	45 min
May 26, 4:20 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	40 min
May 26, 4:21 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	39 min
May 26, 4:39 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	66 min
May 26, 4:43 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	62 min
May 26, 4:44 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	76 min
May 26, 4:49 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Northumberland, Schuylkill	56 min
May 26, 4:53 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Indiana, Westmoreland	52 min
May 26, 4:54 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland	66 min
May 26, 4:56 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Indiana, Westmoreland	50 min
May 26, 5:05 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	55 min
May 26, 5:07 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	53 min
May 26, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Franklin, Fulton, Huntingdon	60 min
May 26, 5:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	50 min
May 26, 5:35 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Clearfield, Elk, Somerset	55 min
May 26, 5:40 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson, Westmoreland	33 min
May 26, 5:49 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	41 min
May 26, 5:49 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Juniata, Perry	56 min
May 26, 5:58 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	62 min
May 26, 6:28 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cameron, Centre, Clearfield, Clinton, Elk and 3 more	62 min
May 26, 6:29 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	61 min
May 26, 6:40 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Lebanon, Northumberland and 3 more	65 min
May 26, 6:50 PM EDT	Severe Thunderstorm Warning	PHI	Carbon	55 min
May 26, 6:54 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	66 min
May 26, 7:21 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	24 min
May 26, 7:23 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Sullivan, Tioga	67 min
May 26, 7:28 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Northumberland, Schuylkill	62 min
May 26, 7:34 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 1 more	56 min
May 26, 8:01 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Sullivan	59 min
May 26, 8:03 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	57 min
May 26, 8:11 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	49 min
May 26, 8:11 PM EDT	Severe Thunderstorm Warning	PHI	Berks	48 min
May 26, 8:27 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lebanon, Schuylkill	44 min
May 26, 8:30 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wyoming	60 min
May 26, 8:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	59 min
May 26, 8:50 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	25 min
May 26, 8:50 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	55 min
May 26, 9:14 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Pike, Susquehanna, Wayne	47 min
May 26, 9:41 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	52 min
May 26, 9:44 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	61 min
May 26, 9:53 PM EDT	Severe Thunderstorm Warning	BGM	Wayne	52 min
May 27, 3:19 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	67 min
May 27, 3:51 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	54 min
May 27, 4:14 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Potter	46 min
May 27, 4:46 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Huntingdon, Mifflin	59 min
May 27, 5:01 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	44 min
May 27, 5:26 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Mifflin, Snyder, Union	49 min
May 27, 5:27 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton, Huntingdon	63 min
May 27, 5:36 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	69 min
May 27, 5:47 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Juniata, Mifflin	58 min
May 27, 5:56 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	64 min
May 27, 5:56 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	64 min
May 27, 5:59 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Sullivan	61 min
May 27, 6:16 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Mifflin, Snyder, Tioga and 1 more	59 min
May 27, 6:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 2 more	65 min
May 27, 6:49 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Perry, York	71 min
May 27, 6:55 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	65 min
May 27, 7:00 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	45 min
May 27, 7:29 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	61 min
May 27, 7:29 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, York	46 min
May 27, 7:39 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Mifflin, Northumberland, Perry, Snyder and 1 more	81 min
May 27, 8:47 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	58 min
May 27, 8:59 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lebanon, Northumberland, Schuylkill	61 min
May 27, 9:20 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lebanon, Perry, York	40 min
May 29, 7:56 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	64 min
May 29, 8:19 PM EDT	Severe Thunderstorm Warning	CTP	Warren	56 min
May 29, 8:39 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	51 min
May 29, 9:09 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Forest, Mercer, Venango	51 min
May 29, 9:21 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	67 min
May 30, 1:13 AM EDT	Severe Thunderstorm Warning	CTP	Potter	47 min
May 30, 2:27 AM EDT	Severe Thunderstorm Warning	BGM	Bradford	63 min
May 30, 2:43 AM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan, Tioga	62 min
May 30, 3:19 AM EDT	Severe Thunderstorm Warning	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wyoming	41 min
May 30, 5:11 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Carbon, Lehigh, Monroe, Northampton	64 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

24 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2010 2012

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.