Weather alerts in Pennsylvania, May 2026

150 weather alerts in May 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in May 2026. Tap one for its archive.

Alerts: 150
Warnings: 54
Watches: 11
Advisories: 31
Busiest day: May 20, 202636 alerts

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 1, 12:53 PM EDT	Frost Advisory	PBZ	Allegheny, Beaver, Fayette, Greene, Indiana, Washington and 1 more	19 hr
May 1, 12:53 PM EDT	Freeze Warning	PBZ	Armstrong, Butler, Clarion, Forest, Jefferson, Lawrence and 2 more	19 hr
May 1, 12:56 PM EDT	Frost Advisory	CTP	Bedford, Blair, Centre, Clinton, Franklin, Fulton and 8 more	20 hr
May 1, 12:56 PM EDT	Freeze Warning	CTP	Cambria, Cameron, Centre, Clearfield, Clinton, Elk and 5 more	20 hr
May 1, 1:24 PM EDT	Freeze Watch	BGM	Lackawanna, Luzerne	24 hr
May 1, 1:35 PM EDT	Freeze Watch	PHI	Carbon, Monroe	23 hr
May 1, 1:53 PM EDT	Frost Advisory	CLE	Erie	19 hr
May 1, 1:53 PM EDT	Freeze Warning	CLE	Crawford, Erie	19 hr
May 2, 12:14 PM EDT	Frost Advisory	CTP	Adams, Columbia, Cumberland, Dauphin, Franklin, Fulton and 9 more	21 hr
May 2, 12:14 PM EDT	Freeze Warning	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 12 more	21 hr
May 2, 12:27 PM EDT	Freeze Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more	21 hr
May 2, 12:42 PM EDT	Frost Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	18 hr
May 2, 12:42 PM EDT	Freeze Warning	PHI	Carbon, Monroe	18 hr
May 2, 1:15 PM EDT	Freeze Warning	BGM	Lackawanna, Luzerne	17 hr
May 2, 1:21 PM EDT	Freeze Warning	CLE	Crawford, Erie	20 hr
May 2, 1:37 PM EDT	Frost Advisory	CLE	Erie	19 hr
May 5, 8:40 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence, Mercer	50 min
May 6, 12:52 PM EDT	Frost Advisory	PBZ	Clarion, Forest, Jefferson, Venango	19 hr
May 6, 12:55 PM EDT	Frost Advisory	CTP	Cameron, Clearfield, Elk, McKean, Potter, Tioga and 1 more	19 hr
May 7, 12:08 PM EDT	Frost Advisory	PBZ	Clarion, Fayette, Forest, Indiana, Jefferson, Venango and 1 more	20 hr
May 7, 12:18 PM EDT	Frost Advisory	CTP	Cambria, Cameron, Centre, Clearfield, Clinton, Elk and 7 more	20 hr
May 9, 4:36 PM EDT	Mesoscale Discussion	SPC	Crawford, Erie, Mercer, Warren	84 min
May 9, 5:41 PM EDT	Severe Thunderstorm Watch	SPC	Crawford, Erie, Warren	4 hr
May 9, 6:19 PM EDT	Special Weather Statement	CLE	Erie	41 min
May 9, 6:39 PM EDT	Mesoscale Discussion	SPC	Crawford, Erie	66 min
May 9, 6:51 PM EDT	Special Weather Statement	CLE	Crawford	54 min
May 9, 7:52 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	53 min
May 10, 3:22 AM EDT	Dense Fog Advisory	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 2 more	7 hr
May 10, 12:41 PM EDT	Frost Advisory	CLE	Crawford, Erie	19 hr
May 10, 1:14 PM EDT	Frost Advisory	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 5 more	19 hr
May 10, 1:14 PM EDT	Freeze Watch	CTP	Cambria, Cameron, Centre, Clearfield, Clinton, Elk and 7 more	23 hr
May 10, 1:17 PM EDT	Frost Advisory	BGM	Bradford, Susquehanna	19 hr
May 10, 1:20 PM EDT	Frost Advisory	PBZ	Armstrong, Beaver, Butler, Clarion, Forest, Indiana and 4 more	19 hr
May 10, 1:20 PM EDT	Freeze Watch	PBZ	Armstrong, Butler, Clarion, Forest, Indiana, Jefferson and 3 more	23 hr
May 10, 3:10 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bucks, Chester, Delaware, Lancaster and 3 more	3 hr
May 10, 7:51 PM EDT	Freeze Warning	CTP	McKean, Potter	12 hr
May 11, 12:37 PM EDT	Frost Advisory	CTP	Bedford, Blair, Centre, Clinton, Columbia, Fulton and 9 more	19 hr
May 11, 12:37 PM EDT	Freeze Warning	CTP	Cambria, Cameron, Centre, Clearfield, Clinton, Elk and 7 more	19 hr
May 11, 12:45 PM EDT	Frost Advisory	PBZ	Allegheny, Beaver, Fayette, Washington, Westmoreland	19 hr
May 11, 12:45 PM EDT	Freeze Warning	PBZ	Armstrong, Butler, Clarion, Forest, Indiana, Jefferson and 3 more	19 hr
May 11, 12:58 PM EDT	Frost Advisory	CLE	Erie	19 hr
May 11, 12:58 PM EDT	Freeze Warning	CLE	Crawford, Erie	19 hr
May 11, 1:12 PM EDT	Frost Advisory	PHI	Carbon, Monroe	19 hr
May 11, 1:36 PM EDT	Frost Advisory	BGM	Lackawanna, Luzerne, Pike, Wayne, Wyoming	19 hr
May 11, 1:36 PM EDT	Freeze Warning	BGM	Bradford, Susquehanna, Wayne	19 hr
May 13, 11:56 AM EDT	Mesoscale Discussion	SPC	Cameron, Clarion, Clearfield, Clinton, Elk, Forest and 7 more	3 hr
May 13, 12:02 PM EDT	Special Weather Statement	CLE	Crawford	43 min
May 13, 12:39 PM EDT	Special Weather Statement	CLE	Crawford	51 min
May 13, 12:41 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Butler, Cambria, Fayette and 6 more	3 hr
May 13, 1:33 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Mercer, Venango	42 min
May 13, 1:37 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	38 min
May 13, 2:09 PM EDT	Severe Thunderstorm Warning	CTP	McKean	51 min
May 13, 2:13 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Jefferson	29 min
May 13, 2:14 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson, Venango	21 min
May 13, 2:15 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	45 min
May 13, 2:59 PM EDT	Special Weather Statement	CTP	Elk	46 min
May 13, 2:59 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	46 min
May 13, 3:10 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	50 min
May 13, 3:40 PM EDT	Special Weather Statement	CTP	Elk	35 min
May 13, 3:54 PM EDT	Special Weather Statement	CTP	Cameron	36 min
May 13, 4:08 PM EDT	Special Weather Statement	CTP	Potter	52 min
May 13, 4:29 PM EDT	Special Weather Statement	CTP	Tioga	46 min
May 13, 5:08 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	52 min
May 13, 5:11 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	64 min
May 13, 5:40 PM EDT	Special Weather Statement	CTP	Mifflin	35 min
May 13, 5:54 PM EDT	Mesoscale Discussion	SPC	Bradford, Columbia, Dauphin, Juniata, Lackawanna, Lebanon and 11 more	2 hr
May 13, 6:12 PM EDT	Special Weather Statement	CTP	Juniata	33 min
May 13, 6:12 PM EDT	Special Weather Statement	CTP	Huntingdon	33 min
May 13, 6:36 PM EDT	Special Weather Statement	CTP	Juniata, Perry	24 min
May 13, 6:44 PM EDT	Special Weather Statement	CTP	Snyder	46 min
May 13, 6:44 PM EDT	Special Weather Statement	CTP	Franklin	31 min
May 13, 6:52 PM EDT	Special Weather Statement	BGM	Susquehanna	38 min
May 13, 6:58 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Northumberland, Perry, Schuylkill, Snyder	47 min
May 13, 7:18 PM EDT	Special Weather Statement	CTP	Adams	27 min
May 13, 7:21 PM EDT	Special Weather Statement	CTP	Cumberland, Dauphin	24 min
May 13, 7:24 PM EDT	Special Weather Statement	BGM	Susquehanna, Wayne	51 min
May 13, 7:45 PM EDT	Special Weather Statement	CTP	Dauphin	30 min
May 13, 7:52 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	23 min
May 13, 8:14 PM EDT	Special Weather Statement	CTP	Schuylkill	31 min
May 13, 8:20 PM EDT	Severe Thunderstorm Warning	PHI	Berks	25 min
May 18, 2:52 AM EDT	Heat Advisory	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	64 hr
May 18, 5:11 PM EDT	Special Weather Statement	CTP	Fulton	34 min
May 18, 5:44 PM EDT	Special Weather Statement	CTP	Fulton	31 min
May 18, 7:36 PM EDT	Special Weather Statement	CTP	Centre	24 min
May 18, 7:50 PM EDT	Special Weather Statement	CTP	Centre	25 min
May 18, 8:00 PM EDT	Special Weather Statement	CTP	Centre	30 min
May 18, 8:03 PM EDT	Special Weather Statement	CTP	Centre	27 min
May 18, 8:16 PM EDT	Special Weather Statement	CTP	Centre	29 min
May 18, 8:36 PM EDT	Special Weather Statement	CTP	Clinton	39 min
May 18, 8:48 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	42 min
May 19, 12:01 AM EDT	Special Weather Statement	CTP	Clinton	29 min
May 19, 12:24 AM EDT	Special Weather Statement	CTP	Lycoming	36 min
May 19, 4:59 PM EDT	Special Weather Statement	CTP	York	46 min
May 19, 5:29 PM EDT	Special Weather Statement	CTP	Lancaster	46 min
May 19, 5:40 PM EDT	Mesoscale Discussion	SPC	Chester, Lancaster, York	65 min
May 19, 8:04 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	25 min
May 19, 8:26 PM EDT	Special Weather Statement	CLE	Crawford, Erie	64 min
May 20, 7:50 AM EDT	Mesoscale Discussion	SPC	Greene, Washington	115 min
May 20, 11:51 AM EDT	Special Weather Statement	CTP	Bedford	24 min
May 20, 12:15 PM EDT	Special Weather Statement	CTP	Bedford	30 min
May 20, 12:23 PM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Berks, Blair, Chester, Cumberland and 15 more	97 min
May 20, 12:39 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Bedford, Columbia, Cumberland, Dauphin, Franklin and 12 more	7 hr
May 20, 12:45 PM EDT	Special Weather Statement	CTP	Fulton	30 min
May 20, 1:03 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	42 min
May 20, 1:43 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	47 min
May 20, 1:52 PM EDT	Mesoscale Discussion	SPC	Bucks, Chester, Delaware, Lehigh, Montgomery, Northampton and 1 more	53 min
May 20, 2:10 PM EDT	Severe Thunderstorm Watch	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	7 hr
May 20, 3:09 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Carbon, Chester, Cumberland, Dauphin and 9 more	96 min
May 20, 3:27 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	48 min
May 20, 3:34 PM EDT	Special Weather Statement	CTP	York	41 min
May 20, 3:40 PM EDT	Special Weather Statement	CTP	Lancaster	35 min
May 20, 3:52 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	38 min
May 20, 3:54 PM EDT	Beach Hazards Statement	CLE	Erie	66 hr
May 20, 3:57 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	48 min
May 20, 4:00 PM EDT	Severe Thunderstorm Warning	PHI	Berks	45 min
May 20, 4:01 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	44 min
May 20, 4:16 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	44 min
May 20, 4:29 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	46 min
May 20, 4:43 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Northampton	47 min
May 20, 4:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	44 min
May 20, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	40 min
May 20, 5:10 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	50 min
May 20, 5:15 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Montgomery, Philadelphia	45 min
May 20, 5:24 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	51 min
May 20, 5:29 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Philadelphia	46 min
May 20, 5:29 PM EDT	Mesoscale Discussion	SPC	Bucks, Delaware, Philadelphia	61 min
May 20, 5:40 PM EDT	Flash Flood Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	3 hr
May 20, 5:41 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	49 min
May 20, 5:52 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	38 min
May 20, 6:01 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	44 min
May 20, 6:09 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	46 min
May 22, 8:50 AM EDT	Flood Watch	PBZ	Allegheny, Beaver, Greene, Washington	41 hr
May 23, 10:18 AM EDT	Wind Advisory	CLE	Erie	16 hr
May 24, 11:13 AM EDT	Areal Flood Warning	PHI	Delaware	2 hr
May 24, 5:14 PM EDT	Flood Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 3 more	7 hr
May 24, 5:55 PM EDT	Dense Fog Advisory	CTP	Elk, McKean, Schuylkill, Warren	15 hr
May 24, 5:57 PM EDT	Dense Fog Advisory	PHI	Carbon, Monroe	13 hr
May 24, 7:41 PM EDT	Flash Flood Warning	PBZ	Armstrong, Beaver, Butler, Clarion, Lawrence, Mercer and 1 more	3 hr
May 24, 8:59 PM EDT	Flash Flood Warning	PBZ	Allegheny, Butler	2 hr
May 25, 1:30 AM EDT	Dense Fog Advisory	CLE	Crawford, Erie	8 hr
May 25, 2:11 AM EDT	Dense Fog Advisory	PBZ	Armstrong, Beaver, Butler, Clarion, Forest, Jefferson and 3 more	7 hr
May 26, 3:27 AM EDT	Dense Fog Advisory	CTP	Columbia, Dauphin, Huntingdon, Juniata, Lancaster, Lebanon and 8 more	5 hr
May 26, 3:34 AM EDT	Dense Fog Advisory	PHI	Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more	4 hr
May 26, 5:13 AM EDT	Dense Fog Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	4 hr
May 26, 1:06 PM EDT	Flood Watch	PBZ	Fayette, Greene, Washington	33 hr
May 26, 1:13 PM EDT	Flood Watch	CTP	Somerset	25 hr
May 27, 3:49 PM EDT	River Flood Advisory	PBZ	Allegheny	19 hr
May 29, 4:00 AM EDT	Beach Hazards Statement	CLE	Erie	40 hr
May 29, 10:48 PM EDT	Special Weather Statement	BGM	Bradford, Susquehanna, Wayne	57 min
May 29, 11:59 PM EDT	Wind Advisory	PHI	Carbon, Monroe	11 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	37
Severe Thunderstorm Watch	3
Mesoscale Discussion	12
Special Weather Statement	40
Flooding
Areal Flood Warning	1
Flash Flood Warning	3
Flood Watch	4
River Flood Advisory	1
Heat
Heat Advisory	1
Cold
Freeze Warning	13
Freeze Watch	4
Frost Advisory	19
Wind and dust
Wind Advisory	2
Fog and smoke
Dense Fog Advisory	8
Coast and beach
Beach Hazards Statement	2

By county

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

27 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2025

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.