Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2018

Severe Thunderstorm Warnings in Pennsylvania, May 2018

115 severe thunderstorm warnings in May 2018. 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 2018. Tap one for its archive.

Severe Thunderstorm Warnings: 115
Busiest day: May 15, 201834 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, 3:20 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	40 min
May 3, 3:52 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	38 min
May 3, 4:27 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Snyder, Union	33 min
May 3, 4:47 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	28 min
May 4, 3:34 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	41 min
May 4, 3:45 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	45 min
May 4, 3:50 PM EDT	Severe Thunderstorm Warning	CTP	Warren	55 min
May 4, 3:56 PM EDT	Severe Thunderstorm Warning	CLE	Erie	20 min
May 4, 4:10 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Mercer, Venango	50 min
May 4, 4:26 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Lawrence, Mercer, Venango	34 min
May 4, 4:31 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean	89 min
May 4, 5:09 PM EDT	Severe Thunderstorm Warning	CTP	Potter	96 min
May 4, 5:21 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver	24 min
May 4, 5:22 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	83 min
May 4, 5:51 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Indiana, Westmoreland	54 min
May 4, 5:54 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	81 min
May 4, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming	90 min
May 4, 6:33 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	72 min
May 4, 6:34 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	56 min
May 4, 7:06 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	54 min
May 4, 7:13 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wyoming	62 min
May 4, 7:59 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Susquehanna, Wayne	48 min
May 10, 2:32 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	43 min
May 10, 3:03 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	27 min
May 10, 4:04 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin	56 min
May 10, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	63 min
May 10, 4:37 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Northumberland, Perry, Snyder, Union	53 min
May 10, 4:56 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	64 min
May 10, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	49 min
May 10, 5:45 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Wayne	60 min
May 10, 5:45 PM EDT	Severe Thunderstorm Warning	CTP	York	45 min
May 10, 6:14 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon	61 min
May 10, 6:17 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	43 min
May 10, 6:22 PM EDT	Severe Thunderstorm Warning	BGM	Pike	53 min
May 10, 6:51 PM EDT	Severe Thunderstorm Warning	PHI	Chester	39 min
May 12, 3:23 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	67 min
May 12, 3:29 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Indiana, Westmoreland	46 min
May 12, 3:54 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	51 min
May 12, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Franklin, Fulton, Huntingdon	63 min
May 12, 4:13 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	32 min
May 12, 4:16 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	59 min
May 12, 4:19 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	56 min
May 12, 4:37 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	38 min
May 12, 5:30 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	45 min
May 12, 6:08 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	52 min
May 12, 6:21 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cambria, Somerset	39 min
May 12, 6:52 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	53 min
May 12, 6:53 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	37 min
May 12, 7:00 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	45 min
May 12, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Chester	44 min
May 12, 7:18 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	57 min
May 12, 7:30 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	45 min
May 12, 7:45 PM EDT	Severe Thunderstorm Warning	PHI	Delaware	45 min
May 13, 8:04 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence	41 min
May 13, 4:22 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	38 min
May 13, 4:36 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	69 min
May 13, 4:53 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	52 min
May 13, 5:44 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	61 min
May 13, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	69 min
May 13, 7:59 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	22 min
May 14, 1:19 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	41 min
May 14, 1:36 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	39 min
May 14, 1:39 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	36 min
May 14, 1:50 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	40 min
May 14, 1:59 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	91 min
May 14, 2:31 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	29 min
May 14, 2:45 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	75 min
May 15, 11:44 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	46 min
May 15, 11:56 AM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	34 min
May 15, 12:00 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk, McKean	75 min
May 15, 12:23 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Jefferson	52 min
May 15, 12:43 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Potter	47 min
May 15, 12:45 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson	45 min
May 15, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Cameron, Clearfield, Clinton, Elk	57 min
May 15, 1:14 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	61 min
May 15, 1:20 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	14 min
May 15, 1:42 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton, Lycoming	63 min
May 15, 1:52 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	38 min
May 15, 2:10 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	65 min
May 15, 2:11 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Huntingdon	49 min
May 15, 2:16 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Columbia, Huntingdon, Juniata, Lycoming and 6 more	74 min
May 15, 2:27 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Wyoming	48 min
May 15, 2:34 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon, Juniata, Mifflin, Perry	56 min
May 15, 3:05 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Pike, Wayne	55 min
May 15, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Juniata, Northumberland, Perry, Schuylkill and 1 more	46 min
May 15, 3:20 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	55 min
May 15, 3:34 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	41 min
May 15, 3:45 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Franklin, Fulton, Lancaster, Lebanon and 3 more	60 min
May 15, 3:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	74 min
May 15, 3:55 PM EDT	Severe Thunderstorm Warning	BGM	Pike	20 min
May 15, 4:12 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	33 min
May 15, 4:31 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	59 min
May 15, 4:41 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	53 min
May 15, 4:41 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	64 min
May 15, 5:07 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Lancaster, York	83 min
May 15, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Chester	63 min
May 15, 5:22 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	38 min
May 15, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	67 min
May 15, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	52 min
May 15, 6:15 PM EDT	Severe Thunderstorm Warning	PHI	Chester	60 min
May 15, 6:35 PM EDT	Severe Thunderstorm Warning	PHI	Chester	40 min
May 19, 5:35 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence	40 min
May 19, 6:48 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	27 min
May 22, 3:30 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	20 min
May 22, 5:44 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	46 min
May 22, 6:07 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	53 min
May 22, 6:39 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	33 min
May 22, 6:46 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	44 min
May 22, 7:01 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	30 min
May 22, 7:26 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	36 min
May 28, 4:13 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	62 min
May 28, 4:52 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna	38 min
May 28, 5:20 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	40 min
May 28, 5:24 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	32 min
May 29, 4:01 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	29 min

By county

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

26 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2017 2019

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.