Alert archive / Pennsylvania / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Pennsylvania, 2016

321 severe thunderstorm warnings in 2016. 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 2016. Tap one for its archive.

Severe Thunderstorm Warnings: 321
Busiest month: July124 severe thunderstorm warnings
Busiest day: July 25, 201655 severe thunderstorm warnings

Over time

By month

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
Feb 16, 12:29 PM EST	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	46 min
Feb 24, 5:36 PM EST	Severe Thunderstorm Warning	CTP	Adams, York	39 min
Feb 24, 6:10 PM EST	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lancaster, Lebanon, York	80 min
Feb 24, 6:27 PM EST	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	48 min
Feb 24, 7:12 PM EST	Severe Thunderstorm Warning	PHI	Chester, Delaware	33 min
Feb 24, 7:30 PM EST	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon, York	45 min
Feb 24, 7:39 PM EST	Severe Thunderstorm Warning	PHI	Berks, Chester	36 min
Feb 24, 8:47 PM EST	Severe Thunderstorm Warning	PHI	Chester	43 min
Feb 24, 9:40 PM EST	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	35 min
Feb 24, 11:03 PM EST	Severe Thunderstorm Warning	PHI	Bucks	42 min
Mar 16, 9:24 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Pike, Wayne	36 min
Mar 17, 4:29 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	31 min
Apr 1, 4:55 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	27 min
Apr 1, 5:45 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	30 min
Apr 2, 10:51 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	39 min
Apr 2, 11:09 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	51 min
Apr 2, 11:56 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	34 min
Apr 7, 12:08 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	37 min
Apr 26, 12:34 AM EDT	Severe Thunderstorm Warning	PHI	Delaware	41 min
Apr 26, 5:49 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	41 min
May 1, 4:55 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	20 min
May 2, 3:14 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	31 min
May 2, 3:58 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Washington, Westmoreland	32 min
May 23, 4:20 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	28 min
Jun 4, 7:16 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	29 min
Jun 5, 3:37 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	68 min
Jun 5, 3:42 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	63 min
Jun 5, 4:19 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	26 min
Jun 5, 4:24 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	51 min
Jun 5, 4:27 PM EDT	Severe Thunderstorm Warning	CTP	Warren	33 min
Jun 5, 4:29 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	46 min
Jun 5, 4:37 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	38 min
Jun 5, 4:40 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	31 min
Jun 5, 4:42 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	48 min
Jun 5, 4:43 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	32 min
Jun 5, 4:54 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter, Warren	66 min
Jun 5, 4:59 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Venango	46 min
Jun 5, 5:06 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	54 min
Jun 5, 5:23 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	52 min
Jun 5, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	52 min
Jun 5, 5:56 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	49 min
Jun 5, 5:58 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	47 min
Jun 5, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean	30 min
Jun 5, 6:28 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	62 min
Jun 5, 6:59 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	17 min
Jun 5, 7:13 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	17 min
Jun 6, 9:58 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	12 min
Jun 6, 10:09 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	36 min
Jun 6, 10:33 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Washington, Westmoreland	27 min
Jun 8, 11:03 AM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	42 min
Jun 8, 11:27 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	48 min
Jun 8, 11:33 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Northampton	42 min
Jun 8, 12:02 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	43 min
Jun 11, 6:30 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	30 min
Jun 16, 10:13 AM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	62 min
Jun 16, 10:24 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Forest, Jefferson, Venango	66 min
Jun 16, 11:02 AM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	28 min
Jun 16, 11:04 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	41 min
Jun 16, 11:12 AM EDT	Severe Thunderstorm Warning	CTP	Cambria	78 min
Jun 16, 11:42 AM EDT	Severe Thunderstorm Warning	PBZ	Greene	30 min
Jun 16, 2:36 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	54 min
Jun 16, 3:07 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	38 min
Jun 16, 3:23 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	52 min
Jun 16, 3:43 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	62 min
Jun 16, 3:43 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	62 min
Jun 16, 4:16 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	44 min
Jun 16, 4:43 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	62 min
Jun 16, 5:03 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	57 min
Jun 21, 12:45 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	45 min
Jun 21, 7:22 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	53 min
Jun 21, 8:11 AM EDT	Severe Thunderstorm Warning	CTP	York	27 min
Jun 21, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	40 min
Jun 21, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	61 min
Jun 28, 2:21 PM EDT	Severe Thunderstorm Warning	CTP	Centre	42 min
Jun 28, 2:40 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	22 min
Jun 28, 2:51 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	24 min
Jun 28, 2:58 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Perry	47 min
Jun 28, 3:18 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	42 min
Jun 28, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland	55 min
Jun 28, 3:44 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lancaster, Lebanon, York	61 min
Jun 28, 4:44 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	61 min
Jun 28, 5:13 PM EDT	Severe Thunderstorm Warning	CTP	York	47 min
Jul 1, 1:33 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	72 min
Jul 1, 1:54 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	66 min
Jul 1, 2:10 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	50 min
Jul 1, 2:49 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	41 min
Jul 1, 2:52 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	38 min
Jul 1, 4:30 PM EDT	Severe Thunderstorm Warning	PHI	Chester	45 min
Jul 7, 7:29 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	24 min
Jul 8, 10:02 PM EDT	Severe Thunderstorm Warning	CLE	Erie	58 min
Jul 9, 2:43 PM EDT	Severe Thunderstorm Warning	BGM	Wayne	32 min
Jul 9, 3:17 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	43 min
Jul 9, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	50 min
Jul 9, 5:58 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	47 min
Jul 9, 8:14 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	46 min
Jul 9, 9:29 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	46 min
Jul 9, 9:48 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	27 min
Jul 13, 11:13 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	77 min
Jul 14, 12:32 AM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest	43 min
Jul 14, 2:04 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe, Northampton	26 min
Jul 14, 2:29 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	46 min
Jul 14, 8:58 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	32 min
Jul 14, 9:30 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	30 min
Jul 16, 5:53 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	52 min
Jul 18, 7:38 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	37 min
Jul 18, 11:58 AM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Northumberland, Union	62 min
Jul 18, 12:30 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Union	75 min
Jul 18, 12:35 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	55 min
Jul 18, 1:20 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne	40 min
Jul 18, 1:36 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	54 min
Jul 18, 1:48 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	57 min
Jul 18, 2:28 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Northampton	47 min
Jul 18, 2:51 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	39 min
Jul 18, 3:25 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	50 min
Jul 18, 3:41 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	49 min
Jul 22, 9:33 AM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	28 min
Jul 23, 4:17 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	58 min
Jul 23, 4:28 PM EDT	Severe Thunderstorm Warning	PHI	Chester	47 min
Jul 23, 4:33 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	42 min
Jul 23, 4:55 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	35 min
Jul 23, 5:03 PM EDT	Severe Thunderstorm Warning	PHI	Chester	28 min
Jul 23, 5:13 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	62 min
Jul 23, 5:24 PM EDT	Severe Thunderstorm Warning	PHI	Philadelphia	51 min
Jul 23, 5:32 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	43 min
Jul 23, 5:47 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	41 min
Jul 23, 6:09 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	66 min
Jul 24, 2:47 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	28 min
Jul 24, 2:59 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler	46 min
Jul 24, 3:13 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	47 min
Jul 24, 3:14 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence, Mercer, Venango	46 min
Jul 24, 3:42 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Westmoreland	48 min
Jul 24, 3:49 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	41 min
Jul 24, 3:58 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	32 min
Jul 24, 4:22 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	38 min
Jul 24, 4:25 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Indiana, Westmoreland	50 min
Jul 24, 4:59 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson, Westmoreland	46 min
Jul 24, 5:08 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	52 min
Jul 24, 5:33 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	42 min
Jul 24, 5:45 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	28 min
Jul 24, 6:34 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	41 min
Jul 24, 6:41 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	64 min
Jul 25, 4:19 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	41 min
Jul 25, 4:54 AM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	51 min
Jul 25, 11:52 AM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	53 min
Jul 25, 12:29 PM EDT	Severe Thunderstorm Warning	BGM	Wayne	61 min
Jul 25, 1:34 PM EDT	Severe Thunderstorm Warning	CTP	Warren	66 min
Jul 25, 1:38 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	67 min
Jul 25, 2:01 PM EDT	Severe Thunderstorm Warning	CTP	Warren	39 min
Jul 25, 2:13 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	62 min
Jul 25, 2:24 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	36 min
Jul 25, 2:32 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	43 min
Jul 25, 2:37 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	53 min
Jul 25, 2:43 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	62 min
Jul 25, 2:44 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter	64 min
Jul 25, 2:51 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Snyder, Union	69 min
Jul 25, 2:52 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	53 min
Jul 25, 2:55 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	50 min
Jul 25, 3:07 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	38 min
Jul 25, 3:12 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	37 min
Jul 25, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Lycoming, Potter, Sullivan and 2 more	76 min
Jul 25, 3:15 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	45 min
Jul 25, 3:20 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	55 min
Jul 25, 3:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	50 min
Jul 25, 3:33 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wyoming	42 min
Jul 25, 3:33 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk	57 min
Jul 25, 3:40 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill	95 min
Jul 25, 3:41 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	49 min
Jul 25, 3:47 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	28 min
Jul 25, 3:50 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	44 min
Jul 25, 3:52 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	53 min
Jul 25, 3:54 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	56 min
Jul 25, 3:54 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	75 min
Jul 25, 4:00 PM EDT	Severe Thunderstorm Warning	CTP	Centre	90 min
Jul 25, 4:02 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	58 min
Jul 25, 4:03 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Wayne, Wyoming	42 min
Jul 25, 4:05 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	40 min
Jul 25, 4:23 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Washington, Westmoreland	38 min
Jul 25, 4:29 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon	61 min
Jul 25, 4:34 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Northampton	56 min
Jul 25, 4:37 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	38 min
Jul 25, 4:48 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Snyder, Union	72 min
Jul 25, 4:54 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	36 min
Jul 25, 5:00 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	45 min
Jul 25, 5:05 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin	55 min
Jul 25, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Northumberland, Schuylkill	60 min
Jul 25, 5:15 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	45 min
Jul 25, 5:19 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	56 min
Jul 25, 5:19 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	56 min
Jul 25, 5:40 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	50 min
Jul 25, 5:57 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Northampton	48 min
Jul 25, 5:58 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	47 min
Jul 25, 6:01 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	44 min
Jul 25, 6:09 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lebanon, Perry	69 min
Jul 25, 6:39 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	40 min
Jul 25, 6:43 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	62 min
Jul 25, 7:03 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	68 min
Jul 28, 12:58 PM EDT	Severe Thunderstorm Warning	PHI	Chester	47 min
Jul 28, 1:24 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	51 min
Jul 28, 2:30 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	45 min
Jul 28, 3:28 PM EDT	Severe Thunderstorm Warning	PHI	Berks	27 min
Jul 30, 2:18 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon, Juniata, Mifflin	57 min
Jul 30, 2:35 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Huntingdon	55 min
Jul 30, 3:36 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	39 min
Jul 31, 6:05 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	40 min
Jul 31, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	91 min
Jul 31, 7:44 PM EDT	Severe Thunderstorm Warning	CTP	Union	61 min
Jul 31, 8:58 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	77 min
Aug 1, 2:13 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Perry	47 min
Aug 1, 4:28 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry	92 min
Aug 1, 6:25 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	40 min
Aug 1, 9:12 PM EDT	Severe Thunderstorm Warning	PHI	Berks	48 min
Aug 5, 7:15 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	35 min
Aug 6, 4:59 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Northampton	46 min
Aug 11, 6:21 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	23 min
Aug 11, 7:28 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	62 min
Aug 11, 7:52 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	53 min
Aug 11, 7:56 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	49 min
Aug 12, 4:49 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	41 min
Aug 13, 2:18 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	42 min
Aug 13, 3:58 PM EDT	Severe Thunderstorm Warning	CLE	Erie	47 min
Aug 13, 4:04 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan	30 min
Aug 13, 4:33 PM EDT	Severe Thunderstorm Warning	CLE	Erie	42 min
Aug 13, 6:06 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	54 min
Aug 13, 7:22 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	23 min
Aug 13, 7:30 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean, Warren	60 min
Aug 13, 7:30 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	45 min
Aug 13, 7:32 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	43 min
Aug 13, 7:47 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	43 min
Aug 13, 8:11 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, McKean, Potter, Tioga	49 min
Aug 13, 8:16 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	44 min
Aug 13, 8:26 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	34 min
Aug 13, 8:27 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	48 min
Aug 13, 8:35 PM EDT	Severe Thunderstorm Warning	CTP	Adams	40 min
Aug 13, 9:20 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	40 min
Aug 13, 9:55 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe, Northampton	50 min
Aug 13, 11:15 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	45 min
Aug 15, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton, Huntingdon	58 min
Aug 16, 2:52 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan	53 min
Aug 16, 3:04 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	56 min
Aug 16, 3:13 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Snyder, Union	47 min
Aug 16, 3:25 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	65 min
Aug 16, 3:30 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Perry	45 min
Aug 16, 3:44 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	46 min
Aug 16, 3:56 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	64 min
Aug 16, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	52 min
Aug 16, 4:28 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill	62 min
Aug 16, 4:35 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	70 min
Aug 16, 5:19 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	41 min
Aug 16, 5:26 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	34 min
Aug 16, 5:35 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	40 min
Aug 16, 6:14 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Westmoreland	61 min
Aug 16, 6:25 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	65 min
Aug 16, 6:37 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	53 min
Aug 16, 7:00 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	60 min
Aug 16, 7:07 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	53 min
Aug 16, 7:26 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield, Huntingdon	34 min
Aug 16, 7:34 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	26 min
Aug 16, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton, Huntingdon	31 min
Aug 16, 8:04 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	41 min
Aug 17, 3:01 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Westmoreland	29 min
Aug 17, 3:29 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	46 min
Aug 19, 5:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	35 min
Aug 25, 5:54 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	66 min
Aug 25, 6:38 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	37 min
Aug 25, 9:02 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	43 min
Aug 25, 10:16 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	44 min
Aug 25, 10:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Westmoreland	50 min
Aug 25, 10:31 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	44 min
Aug 28, 2:34 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	11 min
Aug 28, 2:57 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	63 min
Aug 28, 5:31 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	59 min
Aug 28, 6:16 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	44 min
Aug 28, 7:02 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	28 min
Aug 28, 7:04 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	26 min
Aug 28, 7:34 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	56 min
Aug 28, 8:01 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	40 min
Aug 28, 8:15 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	42 min
Aug 28, 8:24 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	36 min
Sep 7, 3:35 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	25 min
Sep 7, 3:48 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	27 min
Sep 7, 3:48 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	27 min
Sep 7, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	19 min
Sep 7, 4:15 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Westmoreland	15 min
Sep 7, 4:30 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	30 min
Sep 8, 4:16 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	59 min
Sep 8, 5:48 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Forest, Lawrence, Mercer and 1 more	42 min
Sep 10, 6:38 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	67 min
Sep 10, 7:24 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	51 min
Sep 10, 7:31 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	44 min
Sep 10, 7:51 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Mercer, Venango	39 min
Sep 10, 8:13 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	24 min
Sep 10, 8:22 PM EDT	Severe Thunderstorm Warning	CTP	Warren	53 min
Sep 10, 8:22 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Venango	38 min
Sep 14, 3:51 PM EDT	Severe Thunderstorm Warning	BGM	Pike	24 min
Sep 17, 4:30 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	45 min
Sep 17, 5:05 PM EDT	Severe Thunderstorm Warning	CLE	Erie	25 min
Sep 17, 5:37 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	38 min
Sep 17, 5:49 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	26 min
Sep 17, 5:54 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	57 min
Sep 17, 7:17 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	28 min
Sep 18, 5:49 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Northumberland, Union	56 min
Sep 18, 6:40 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland	47 min
Sep 29, 3:13 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	62 min
Sep 29, 3:53 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	27 min
Sep 29, 3:59 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	46 min
Sep 29, 4:28 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	32 min
Oct 1, 6:12 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	33 min
Oct 20, 4:51 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	39 min
Oct 20, 4:58 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	62 min
Oct 20, 5:27 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	25 min
Oct 20, 6:24 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	36 min
Oct 20, 6:42 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	33 min
Oct 20, 7:04 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cambria, Somerset	56 min
Oct 20, 8:15 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	45 min
Oct 20, 10:10 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming	65 min
Oct 20, 10:42 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan, Tioga	52 min
Oct 20, 10:48 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Wyoming	27 min
Oct 30, 3:29 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 5 more	76 min
Oct 30, 4:32 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Dauphin, Lancaster, Lebanon, York	58 min
Oct 30, 5:20 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	25 min
Oct 30, 5:48 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	42 min

By county

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

27 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2015 2017

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.