Alert archive / Pennsylvania / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Pennsylvania, 2013

494 severe thunderstorm warnings in 2013. 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 2013. Tap one for its archive.

Severe Thunderstorm Warnings: 494
Busiest month: June137 severe thunderstorm warnings
Busiest day: July 10, 201337 severe thunderstorm warnings

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

376 of 494 severe thunderstorm warnings covering Pennsylvania in 2013 had a qualifying storm report inside them; 805 of 963 hail, wind and damage reports fell inside a warning, on average 26 minutes after it went out.

Pennsylvania, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	494	376	24%	963	84%	26 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Binghamton, NY: severe thunderstorm warnings	143	97	32%	300	82%	24 min
NWS Philadelphia/Mount Holly: severe thunderstorm warnings	127	69	46%	212	73%	24 min
NWS Pittsburgh, PA: severe thunderstorm warnings	262	223	15%	746	84%	24 min
NWS Cleveland, OH: severe thunderstorm warnings	224	163	27%	385	86%	22 min
NWS State College, PA: severe thunderstorm warnings	212	149	30%	371	87%	29 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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
Jan 30, 9:26 AM EST	Severe Thunderstorm Warning	PBZ	Beaver, Washington	49 min
Jan 30, 9:51 AM EST	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	39 min
Jan 30, 10:22 AM EST	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Indiana, Washington, Westmoreland	38 min
Jan 30, 10:25 AM EST	Severe Thunderstorm Warning	PBZ	Fayette, Greene	50 min
Jan 30, 10:56 AM EST	Severe Thunderstorm Warning	PBZ	Fayette, Indiana, Westmoreland	34 min
Jan 30, 10:57 AM EST	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	48 min
Jan 30, 11:09 AM EST	Severe Thunderstorm Warning	PBZ	Fayette	66 min
Jan 30, 11:46 AM EST	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Centre, Fulton, Huntingdon and 2 more	44 min
Apr 10, 1:39 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Venango	51 min
Apr 10, 2:07 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson, Venango	38 min
Apr 10, 2:17 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	58 min
Apr 10, 2:22 PM EDT	Severe Thunderstorm Warning	PBZ	Forest	8 min
Apr 10, 2:36 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	39 min
Apr 10, 3:07 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Potter	53 min
Apr 10, 3:45 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	60 min
Apr 10, 4:02 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Montour, Northumberland, Sullivan, Union	58 min
Apr 10, 4:29 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	61 min
Apr 10, 4:38 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Sullivan, Union	52 min
Apr 10, 4:45 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Wyoming	45 min
Apr 10, 4:57 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	48 min
Apr 10, 5:10 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Snyder	65 min
Apr 10, 5:20 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	40 min
Apr 10, 5:25 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	65 min
Apr 10, 5:26 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence, Washington	49 min
Apr 10, 5:34 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	56 min
Apr 10, 5:45 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	60 min
Apr 10, 6:02 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Lycoming, McKean, Potter and 1 more	58 min
Apr 10, 6:12 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more	63 min
Apr 10, 6:21 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	54 min
Apr 10, 6:39 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson	51 min
Apr 10, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk	61 min
Apr 10, 6:51 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Indiana, Washington and 1 more	54 min
Apr 10, 6:56 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	49 min
Apr 10, 7:05 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Columbia, Lycoming, Sullivan, Tioga	55 min
Apr 10, 7:17 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Cameron, Centre, Clearfield, Clinton and 4 more	58 min
Apr 10, 7:44 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Montgomery	46 min
Apr 10, 7:45 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	45 min
Apr 10, 8:04 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Huntingdon, Juniata, Lycoming, Mifflin and 2 more	41 min
Apr 10, 8:30 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Cumberland, Dauphin, Juniata, Lebanon, Northumberland and 5 more	60 min
Apr 10, 9:14 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon	46 min
Apr 10, 9:40 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Fayette, Greene, Indiana, Washington and 1 more	50 min
Apr 10, 10:11 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	64 min
Apr 16, 7:01 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver	29 min
Apr 16, 7:41 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	49 min
Apr 19, 4:10 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Centre, Clearfield, Clinton, Huntingdon and 4 more	80 min
Apr 19, 5:37 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	38 min
Apr 19, 6:14 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	46 min
Apr 19, 6:22 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Juniata, Lebanon, Lycoming, Montour and 5 more	83 min
Apr 19, 6:39 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, York	81 min
Apr 19, 6:50 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wyoming	40 min
Apr 19, 7:29 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming	61 min
Apr 19, 7:45 PM EDT	Severe Thunderstorm Warning	PHI	Carbon	45 min
Apr 19, 8:06 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	54 min
Apr 24, 3:39 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield	51 min
Apr 24, 4:37 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Centre, Clinton, Cumberland, Franklin, Fulton and 6 more	53 min
Apr 24, 5:23 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, Fulton	37 min
May 8, 6:08 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Northumberland, Perry	52 min
May 10, 3:11 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	49 min
May 10, 3:26 PM EDT	Severe Thunderstorm Warning	CLE	Erie	64 min
May 10, 3:43 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	47 min
May 10, 3:52 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	38 min
May 10, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Warren	69 min
May 10, 4:43 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	47 min
May 10, 4:51 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Jefferson	39 min
May 10, 5:50 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	40 min
May 10, 6:23 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield, Somerset	37 min
May 10, 6:29 PM EDT	Severe Thunderstorm Warning	CTP	Blair	46 min
May 10, 6:58 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield, Huntingdon	62 min
May 10, 7:56 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming	64 min
May 21, 8:49 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	41 min
May 22, 5:40 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	35 min
May 22, 5:45 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	45 min
May 22, 5:47 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon, Mifflin	58 min
May 22, 5:57 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	48 min
May 22, 6:02 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield, Huntingdon	43 min
May 22, 6:20 PM EDT	Severe Thunderstorm Warning	CTP	Potter	55 min
May 22, 6:21 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	39 min
May 22, 6:33 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 2 more	57 min
May 22, 6:48 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, Juniata, Perry	42 min
May 22, 7:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Juniata, Lycoming, Mifflin, Montour and 3 more	54 min
May 22, 7:21 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	54 min
May 22, 7:25 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Montour, Northumberland, Potter and 3 more	65 min
May 22, 7:40 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Juniata, Lebanon, Northumberland, Perry and 1 more	50 min
May 22, 7:55 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	65 min
May 22, 7:57 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	63 min
May 22, 7:58 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Snyder, Union	77 min
May 22, 8:27 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Luzerne, Susquehanna, Wyoming	63 min
May 22, 9:00 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	60 min
May 22, 9:03 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming	57 min
May 22, 9:52 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Pike, Susquehanna, Wayne	53 min
May 22, 10:40 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	50 min
May 23, 4:22 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	23 min
May 23, 6:23 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	37 min
May 28, 6:59 PM EDT	Severe Thunderstorm Warning	CLE	Erie	46 min
May 28, 8:07 PM EDT	Severe Thunderstorm Warning	CTP	Warren	53 min
May 28, 8:18 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	57 min
May 28, 8:24 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	51 min
May 28, 9:14 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	61 min
May 28, 9:46 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	44 min
May 28, 10:15 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean, Potter, Warren	75 min
May 29, 5:25 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	35 min
Jun 1, 6:19 PM EDT	Severe Thunderstorm Warning	CLE	Erie	26 min
Jun 1, 6:45 PM EDT	Severe Thunderstorm Warning	CLE	Erie	30 min
Jun 2, 1:49 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	41 min
Jun 2, 3:01 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	44 min
Jun 2, 3:33 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	42 min
Jun 13, 2:52 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	53 min
Jun 13, 3:18 AM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	57 min
Jun 13, 3:25 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence, Washington	65 min
Jun 13, 3:28 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	62 min
Jun 13, 3:51 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Forest, Mercer, Venango	54 min
Jun 13, 3:52 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Potter	53 min
Jun 13, 4:03 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Westmoreland	57 min
Jun 13, 4:12 AM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	48 min
Jun 13, 4:27 AM EDT	Severe Thunderstorm Warning	PBZ	Washington, Westmoreland	48 min
Jun 13, 4:43 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Indiana, Jefferson, Westmoreland	77 min
Jun 13, 5:15 AM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Centre, Clearfield, Fulton and 3 more	60 min
Jun 13, 6:15 AM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Centre, Clinton, Cumberland, Franklin and 8 more	75 min
Jun 13, 6:52 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, Fulton, Perry, York	38 min
Jun 13, 7:31 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 1 more	59 min
Jun 13, 8:33 AM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon, York	57 min
Jun 13, 8:40 AM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	50 min
Jun 13, 9:18 AM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	57 min
Jun 17, 3:55 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	65 min
Jun 17, 4:06 PM EDT	Severe Thunderstorm Warning	PHI	Chester	69 min
Jun 18, 4:00 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	60 min
Jun 18, 4:57 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Westmoreland	48 min
Jun 24, 1:11 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	34 min
Jun 24, 1:18 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	57 min
Jun 24, 1:22 PM EDT	Severe Thunderstorm Warning	PHI	Chester	53 min
Jun 24, 1:42 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	48 min
Jun 24, 1:56 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Susquehanna, Wyoming	64 min
Jun 24, 2:13 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland, Schuylkill, Snyder	62 min
Jun 24, 2:30 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	30 min
Jun 24, 2:38 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	67 min
Jun 24, 3:10 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	65 min
Jun 24, 3:45 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	30 min
Jun 24, 4:03 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Wyoming	57 min
Jun 24, 4:24 PM EDT	Severe Thunderstorm Warning	BGM	Wyoming	51 min
Jun 24, 5:18 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	42 min
Jun 24, 7:47 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	58 min
Jun 25, 11:51 AM EDT	Severe Thunderstorm Warning	CTP	Clearfield	54 min
Jun 25, 12:30 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	60 min
Jun 25, 2:22 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Northumberland, Perry, Schuylkill	53 min
Jun 25, 3:19 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Juniata, Perry	56 min
Jun 25, 3:37 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	53 min
Jun 25, 3:43 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	47 min
Jun 25, 4:33 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	57 min
Jun 25, 4:42 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	63 min
Jun 25, 4:49 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	41 min
Jun 25, 4:49 PM EDT	Severe Thunderstorm Warning	PHI	Philadelphia	26 min
Jun 25, 5:03 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	57 min
Jun 25, 5:16 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Venango	59 min
Jun 25, 5:22 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	38 min
Jun 25, 5:23 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	52 min
Jun 25, 5:25 PM EDT	Severe Thunderstorm Warning	CTP	Warren	65 min
Jun 25, 5:37 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Mercer, Venango	68 min
Jun 25, 5:47 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson, Venango	73 min
Jun 25, 5:50 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Jefferson	40 min
Jun 25, 5:54 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Lawrence, Westmoreland	81 min
Jun 25, 5:59 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Warren	61 min
Jun 25, 6:07 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Lawrence, Washington	53 min
Jun 25, 6:12 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	48 min
Jun 25, 6:23 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Indiana, Jefferson	82 min
Jun 25, 6:29 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	61 min
Jun 25, 6:40 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Fayette, Washington, Westmoreland	65 min
Jun 25, 6:45 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Indiana, Westmoreland	75 min
Jun 25, 6:54 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	66 min
Jun 25, 6:56 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	34 min
Jun 25, 7:04 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton	41 min
Jun 25, 7:09 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Westmoreland	51 min
Jun 25, 7:10 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon, Somerset	50 min
Jun 25, 7:13 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	62 min
Jun 25, 7:17 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	73 min
Jun 25, 7:36 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clinton, Huntingdon, Juniata, Mifflin and 2 more	54 min
Jun 25, 7:44 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Fulton, Huntingdon, Somerset	76 min
Jun 25, 7:51 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	39 min
Jun 25, 8:00 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	45 min
Jun 25, 8:19 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Juniata and 6 more	56 min
Jun 25, 8:57 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lebanon, Montour, Northumberland, Schuylkill	93 min
Jun 25, 9:04 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more	71 min
Jun 25, 9:14 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	61 min
Jun 25, 9:34 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	56 min
Jun 25, 10:07 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	53 min
Jun 25, 10:15 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	30 min
Jun 25, 10:52 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	38 min
Jun 26, 1:45 AM EDT	Severe Thunderstorm Warning	PBZ	Washington	60 min
Jun 26, 5:09 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lancaster, Lebanon	51 min
Jun 26, 5:45 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	75 min
Jun 26, 6:33 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	57 min
Jun 26, 8:11 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	64 min
Jun 27, 1:23 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Fulton, Huntingdon, Juniata, Perry	67 min
Jun 27, 2:01 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	59 min
Jun 27, 2:57 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Juniata, Perry	78 min
Jun 27, 3:28 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland, Perry, Snyder, Union	77 min
Jun 27, 4:06 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	39 min
Jun 27, 4:20 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Huntingdon	55 min
Jun 27, 4:33 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	57 min
Jun 27, 4:36 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Juniata, Northumberland, Perry and 3 more	69 min
Jun 27, 4:45 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Snyder, Union	60 min
Jun 27, 5:01 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton	59 min
Jun 27, 5:13 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lebanon, Northumberland, Schuylkill	77 min
Jun 27, 5:17 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Union	58 min
Jun 27, 5:40 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Schuylkill, Sullivan	65 min
Jun 27, 6:41 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Schuylkill, Sullivan	64 min
Jun 27, 6:51 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	69 min
Jun 27, 7:43 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	62 min
Jun 28, 12:41 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	49 min
Jun 28, 12:43 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	47 min
Jun 28, 1:10 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	50 min
Jun 28, 1:12 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Washington, Westmoreland	63 min
Jun 28, 1:22 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	68 min
Jun 28, 1:29 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter, Tioga	61 min
Jun 28, 1:33 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	57 min
Jun 28, 1:47 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cambria, Somerset	73 min
Jun 28, 2:14 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	46 min
Jun 28, 2:17 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton, Somerset	58 min
Jun 28, 2:50 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	55 min
Jun 28, 3:08 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Franklin, Fulton, Huntingdon, Somerset	67 min
Jun 28, 3:08 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence	67 min
Jun 28, 3:12 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin, Snyder, Union	63 min
Jun 28, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	46 min
Jun 28, 3:19 PM EDT	Severe Thunderstorm Warning	PHI	Chester	41 min
Jun 28, 3:29 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	61 min
Jun 28, 4:04 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	41 min
Jun 28, 4:09 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, Fulton, Huntingdon, York	66 min
Jun 28, 4:10 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	65 min
Jun 28, 4:28 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	47 min
Jun 28, 4:36 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	39 min
Jun 28, 4:45 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	45 min
Jun 28, 4:56 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Northumberland, Schuylkill	64 min
Jun 28, 4:58 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	62 min
Jun 28, 6:10 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	65 min
Jun 29, 6:20 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	25 min
Jun 30, 12:40 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler	50 min
Jun 30, 1:26 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	49 min
Jun 30, 2:40 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	50 min
Jun 30, 3:09 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	51 min
Jul 4, 4:29 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	46 min
Jul 4, 4:47 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	43 min
Jul 4, 5:22 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	23 min
Jul 4, 5:51 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	39 min
Jul 4, 5:55 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	50 min
Jul 4, 8:31 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion	29 min
Jul 5, 5:19 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Potter	41 min
Jul 6, 9:50 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	25 min
Jul 7, 12:27 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	63 min
Jul 7, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	62 min
Jul 7, 1:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	65 min
Jul 7, 2:30 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield	45 min
Jul 7, 2:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Fulton, Huntingdon	50 min
Jul 7, 3:12 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield, Clinton, Huntingdon	63 min
Jul 7, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	58 min
Jul 7, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Huntingdon, Juniata, Mifflin, Perry	55 min
Jul 7, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Dauphin, Juniata, Mifflin, Northumberland, Perry and 2 more	54 min
Jul 7, 4:20 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Union	55 min
Jul 7, 4:45 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 2 more	60 min
Jul 7, 5:10 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	65 min
Jul 7, 5:15 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Luzerne, Susquehanna, Wyoming	60 min
Jul 7, 5:32 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	73 min
Jul 7, 5:36 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	54 min
Jul 7, 6:12 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	48 min
Jul 7, 6:29 PM EDT	Severe Thunderstorm Warning	PHI	Chester	61 min
Jul 7, 7:27 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	48 min
Jul 10, 9:05 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver	40 min
Jul 10, 10:57 AM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	48 min
Jul 10, 11:12 AM EDT	Severe Thunderstorm Warning	CTP	Somerset	63 min
Jul 10, 2:51 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	24 min
Jul 10, 3:10 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	50 min
Jul 10, 3:29 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	46 min
Jul 10, 3:37 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	38 min
Jul 10, 3:44 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	76 min
Jul 10, 3:49 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	41 min
Jul 10, 4:03 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence	42 min
Jul 10, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	Warren	64 min
Jul 10, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	49 min
Jul 10, 4:13 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence	47 min
Jul 10, 4:16 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	74 min
Jul 10, 4:35 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	40 min
Jul 10, 4:50 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	40 min
Jul 10, 5:00 PM EDT	Severe Thunderstorm Warning	CLE	Erie	60 min
Jul 10, 5:02 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	58 min
Jul 10, 5:16 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	44 min
Jul 10, 5:22 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence, Washington	38 min
Jul 10, 5:30 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	45 min
Jul 10, 5:34 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	26 min
Jul 10, 5:42 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	48 min
Jul 10, 5:48 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	42 min
Jul 10, 5:52 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Jefferson	38 min
Jul 10, 5:58 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Lawrence and 2 more	47 min
Jul 10, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk	60 min
Jul 10, 6:26 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	49 min
Jul 10, 6:28 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	47 min
Jul 10, 6:33 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Cameron, Centre, Clearfield, Clinton and 2 more	57 min
Jul 10, 6:47 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	43 min
Jul 10, 6:56 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Indiana, Westmoreland	49 min
Jul 10, 7:03 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	57 min
Jul 10, 7:17 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	28 min
Jul 10, 7:26 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Clinton, Huntingdon and 1 more	64 min
Jul 10, 7:28 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	47 min
Jul 10, 7:54 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	66 min
Jul 16, 4:24 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Westmoreland	66 min
Jul 17, 2:56 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	49 min
Jul 17, 2:57 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Jefferson	33 min
Jul 17, 3:54 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	51 min
Jul 17, 4:53 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	52 min
Jul 18, 4:48 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Jefferson	12 min
Jul 18, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton, Lycoming	64 min
Jul 18, 5:46 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Jefferson	29 min
Jul 18, 6:58 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	32 min
Jul 19, 4:28 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Perry	62 min
Jul 19, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	64 min
Jul 19, 5:44 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, York	91 min
Jul 19, 5:55 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	35 min
Jul 19, 6:01 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler	29 min
Jul 19, 6:29 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler	31 min
Jul 19, 6:59 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin, York	76 min
Jul 19, 8:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks	42 min
Jul 19, 9:07 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Northampton	38 min
Jul 20, 2:06 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour	54 min
Jul 20, 4:58 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	62 min
Jul 20, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	59 min
Jul 20, 8:49 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	56 min
Jul 20, 9:59 PM EDT	Severe Thunderstorm Warning	PHI	Montgomery, Philadelphia	61 min
Jul 23, 4:11 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	64 min
Jul 23, 4:38 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	52 min
Jul 23, 4:38 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	67 min
Jul 23, 4:44 PM EDT	Severe Thunderstorm Warning	CTP	Warren	46 min
Jul 23, 5:29 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Washington	46 min
Jul 23, 5:39 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk, McKean, Warren	66 min
Jul 23, 5:40 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	35 min
Jul 23, 6:19 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	41 min
Jul 23, 6:22 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	38 min
Jul 23, 6:28 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk, McKean	62 min
Jul 23, 6:55 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	65 min
Jul 23, 6:56 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	49 min
Jul 23, 8:21 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	54 min
Jul 27, 5:01 PM EDT	Severe Thunderstorm Warning	CTP	Potter, Tioga	59 min
Jul 27, 5:35 PM EDT	Severe Thunderstorm Warning	CTP	Potter, Tioga	55 min
Jul 28, 10:25 AM EDT	Severe Thunderstorm Warning	CTP	Sullivan	35 min
Jul 28, 10:30 AM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	60 min
Jul 28, 11:29 AM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	61 min
Jul 28, 11:54 PM EDT	Severe Thunderstorm Warning	PHI	Chester	51 min
Jul 29, 1:18 AM EDT	Severe Thunderstorm Warning	PHI	Delaware	42 min
Aug 7, 3:42 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	48 min
Aug 7, 4:22 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	38 min
Aug 7, 4:29 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	46 min
Aug 7, 4:40 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk	65 min
Aug 7, 5:16 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	44 min
Aug 7, 5:36 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton	54 min
Aug 7, 5:55 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	50 min
Aug 7, 5:57 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	63 min
Aug 7, 6:16 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	59 min
Aug 7, 6:23 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	67 min
Aug 7, 7:58 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	62 min
Aug 7, 8:16 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Juniata, Perry	59 min
Aug 7, 9:08 PM EDT	Severe Thunderstorm Warning	CTP	York	67 min
Aug 8, 4:36 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	39 min
Aug 8, 5:15 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	45 min
Aug 13, 12:30 AM EDT	Severe Thunderstorm Warning	CLE	Erie	75 min
Aug 13, 2:21 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	39 min
Aug 13, 2:34 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	56 min
Aug 13, 6:07 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	53 min
Aug 13, 6:23 AM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	67 min
Aug 13, 7:05 AM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	40 min
Aug 22, 2:56 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	49 min
Aug 22, 5:57 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton	33 min
Aug 28, 3:46 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	44 min
Aug 29, 5:12 PM EDT	Severe Thunderstorm Warning	BGM	Wayne	63 min
Aug 31, 2:23 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton	67 min
Aug 31, 3:42 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	63 min
Aug 31, 4:46 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	59 min
Aug 31, 6:02 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Jefferson	43 min
Aug 31, 8:03 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	57 min
Sep 2, 5:34 AM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	56 min
Sep 2, 10:29 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	76 min
Sep 2, 1:07 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	83 min
Sep 2, 1:42 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson	33 min
Sep 2, 2:19 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean, Potter, Warren	56 min
Sep 2, 3:05 PM EDT	Severe Thunderstorm Warning	PBZ	Forest	40 min
Sep 2, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter, Tioga	61 min
Sep 2, 3:43 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Potter	62 min
Sep 2, 4:29 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter	61 min
Sep 2, 5:09 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	51 min
Sep 2, 5:32 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lancaster, York	58 min
Sep 2, 6:02 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	58 min
Sep 2, 6:21 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	39 min
Sep 2, 6:31 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	59 min
Sep 2, 6:50 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield	55 min
Sep 2, 7:10 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	65 min
Sep 2, 8:15 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Wyoming	45 min
Sep 2, 11:31 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	59 min
Sep 11, 2:05 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	40 min
Sep 11, 2:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming	54 min
Sep 11, 3:31 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	44 min
Sep 11, 3:58 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Potter, Tioga	62 min
Sep 11, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Sullivan, Union	54 min
Sep 11, 4:19 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Wayne	56 min
Sep 11, 4:38 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	67 min
Sep 11, 4:42 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	63 min
Sep 11, 5:47 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Montour, Northumberland, Schuylkill	58 min
Sep 11, 6:32 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Montour, Northumberland, Schuylkill, Snyder	58 min
Sep 11, 6:33 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	57 min
Sep 11, 7:37 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Schuylkill	53 min
Sep 11, 7:50 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	55 min
Sep 11, 7:55 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin	50 min
Sep 12, 11:56 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Westmoreland	49 min
Sep 12, 12:12 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson	48 min
Sep 12, 12:29 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	46 min
Sep 12, 12:47 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	43 min
Sep 12, 1:03 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	57 min
Sep 12, 1:27 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	48 min
Sep 12, 2:00 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton, Lycoming, Union	60 min
Sep 12, 2:41 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Dauphin, Juniata, Mifflin, Perry, Snyder and 1 more	64 min
Sep 12, 2:56 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Columbia, Lycoming, Montour, Northumberland and 4 more	64 min
Sep 12, 3:24 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Wyoming	66 min
Sep 12, 3:28 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Cumberland, Dauphin, Franklin, Juniata, Lancaster and 8 more	47 min
Sep 12, 3:38 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	67 min
Sep 12, 3:51 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Lancaster, York	84 min
Sep 12, 4:02 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Sullivan	58 min
Sep 12, 4:03 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Luzerne, Susquehanna, Wyoming	42 min
Sep 12, 4:08 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Cumberland, Dauphin, Lancaster, Lebanon, Montour and 4 more	52 min
Sep 12, 4:40 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more	95 min
Sep 12, 4:43 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	77 min
Sep 12, 4:59 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	31 min
Sep 12, 5:47 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	58 min
Sep 12, 6:07 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	68 min
Oct 7, 8:25 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton, Lycoming, Potter, Tioga	65 min
Oct 7, 8:50 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Huntingdon, Mifflin	40 min
Oct 7, 8:57 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	48 min
Oct 7, 9:27 AM EDT	Severe Thunderstorm Warning	CTP	Tioga	63 min
Oct 7, 10:24 AM EDT	Severe Thunderstorm Warning	BGM	Bradford	51 min
Oct 7, 10:39 AM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Snyder, Union	66 min
Oct 7, 11:17 AM EDT	Severe Thunderstorm Warning	BGM	Luzerne, Wyoming	43 min
Oct 7, 11:28 AM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	47 min
Oct 7, 11:50 AM EDT	Severe Thunderstorm Warning	PHI	Berks	40 min
Oct 7, 12:12 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	63 min
Oct 7, 12:33 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	57 min
Oct 7, 12:49 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	41 min
Oct 7, 12:55 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Susquehanna, Wayne	65 min
Oct 7, 1:05 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	25 min
Oct 7, 1:38 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	52 min
Oct 7, 1:59 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	46 min
Nov 1, 2:47 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Greene, Washington	43 min
Nov 1, 3:31 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Fayette, Greene, Indiana and 2 more	44 min
Nov 1, 4:11 AM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Indiana, Jefferson, Westmoreland	34 min
Nov 1, 4:12 AM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Centre, Clearfield, Somerset	48 min
Nov 1, 4:22 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, McKean, Potter	53 min
Nov 1, 4:59 AM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 6 more	61 min
Nov 1, 5:13 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Lycoming, Potter, Tioga	62 min
Nov 1, 5:38 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Centre, Clinton, Cumberland, Dauphin, Franklin and 11 more	52 min
Nov 1, 6:00 AM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	45 min
Nov 1, 6:29 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 11 more	61 min
Nov 1, 6:45 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe	75 min
Nov 1, 7:35 AM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	55 min
Nov 1, 7:53 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more	67 min
Nov 1, 8:37 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	68 min
Nov 1, 9:11 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	79 min
Nov 17, 8:36 PM EST	Severe Thunderstorm Warning	PBZ	Beaver	54 min
Nov 17, 8:42 PM EST	Severe Thunderstorm Warning	CLE	Crawford, Erie	78 min
Nov 17, 8:58 PM EST	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	62 min
Nov 17, 9:06 PM EST	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Washington	54 min
Nov 17, 9:33 PM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Mercer, Venango	57 min
Nov 17, 9:39 PM EST	Severe Thunderstorm Warning	PBZ	Greene, Washington	66 min
Nov 17, 9:42 PM EST	Severe Thunderstorm Warning	PBZ	Fayette	63 min
Nov 17, 9:47 PM EST	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Washington and 1 more	58 min
Nov 17, 10:01 PM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Forest, Jefferson, Venango	74 min
Nov 17, 10:17 PM EST	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	58 min
Nov 17, 10:19 PM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson, Westmoreland	56 min
Nov 17, 10:24 PM EST	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter	81 min
Nov 17, 10:25 PM EST	Severe Thunderstorm Warning	PBZ	Fayette	65 min
Nov 17, 10:42 PM EST	Severe Thunderstorm Warning	CTP	Cambria, Clearfield, Somerset	63 min
Nov 17, 11:04 PM EST	Severe Thunderstorm Warning	PBZ	Fayette	56 min
Nov 17, 11:38 PM EST	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Lycoming, Potter and 1 more	52 min
Nov 17, 11:41 PM EST	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Clearfield, Franklin, Fulton and 3 more	64 min
Nov 18, 12:20 AM EST	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Mifflin, Montour, Northumberland and 3 more	70 min
Nov 18, 12:36 AM EST	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, Juniata, Mifflin, Perry and 1 more	54 min
Nov 18, 1:09 AM EST	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	66 min
Nov 18, 1:22 AM EST	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill	53 min
Nov 18, 1:25 AM EST	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, Schuylkill, York	80 min
Nov 18, 1:58 AM EST	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Northampton	62 min
Nov 18, 2:28 AM EST	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Montgomery	62 min
Nov 18, 2:54 AM EST	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Monroe, Northampton	66 min
Nov 18, 3:29 AM EST	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	61 min
Dec 22, 1:58 AM EST	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	62 min
Dec 22, 2:11 AM EST	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence, Washington	64 min
Dec 22, 2:37 AM EST	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 3 more	53 min
Dec 22, 2:53 AM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Beaver, Butler, Clarion, Forest, Indiana and 3 more	37 min
Dec 22, 3:19 AM EST	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk, McKean	41 min
Dec 22, 3:26 AM EST	Severe Thunderstorm Warning	CTP	Cambria, Clearfield, Somerset	64 min
Dec 22, 3:26 AM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Fayette, Indiana, Westmoreland	49 min
Dec 22, 3:28 AM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Forest, Indiana, Jefferson	47 min
Dec 22, 3:57 AM EST	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 2 more	48 min
Dec 22, 4:11 AM EST	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Centre, Clearfield, Fulton and 4 more	49 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 2012 2014

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.