Weather alerts in Pennsylvania, May 2021

130 weather alerts in May 2021, 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 2021. Tap one for its archive.

Alerts: 130
Warnings: 44
Watches: 5
Advisories: 24
Busiest day: May 26, 202172 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
Apr 30, 8:56 PM EDT	Wind Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	6 hr
May 3, 2:47 PM EDT	Mesoscale Discussion	SPC	Fayette, Greene, Washington	118 min
May 3, 8:54 PM EDT	Tornado Warning	PBZ	Lawrence	36 min
May 3, 9:29 PM EDT	Tornado Warning	PBZ	Butler, Lawrence	31 min
May 4, 2:32 PM EDT	Special Weather Statement	CTP	Elk	43 min
May 4, 2:49 PM EDT	Tornado Warning	CTP	Elk	26 min
May 4, 2:56 PM EDT	Tornado Warning	PBZ	Jefferson	19 min
May 4, 3:12 PM EDT	Special Weather Statement	CTP	Elk	33 min
May 4, 3:23 PM EDT	Areal Flood Advisory	CTP	Cameron, Elk	2 hr
May 4, 3:28 PM EDT	Mesoscale Discussion	SPC	Bradford, Cameron, Clarion, Clearfield, Clinton, Columbia and 14 more	62 min
May 4, 6:00 PM EDT	Flash Flood Watch	PBZ	Fayette, Greene	11 hr
May 4, 7:01 PM EDT	Special Weather Statement	BGM	Wyoming	44 min
May 4, 7:34 PM EDT	Special Weather Statement	BGM	Lackawanna	41 min
May 4, 8:22 PM EDT	Areal Flood Advisory	BGM	Lackawanna, Wyoming	3 hr
May 4, 9:23 PM EDT	Special Weather Statement	BGM	Luzerne	52 min
May 4, 9:44 PM EDT	Areal Flood Advisory	BGM	Lackawanna, Wayne	3 hr
May 4, 10:09 PM EDT	Flash Flood Warning	BGM	Lackawanna, Wayne	3 hr
May 5, 1:21 AM EDT	Areal Flood Warning	BGM	Lackawanna, Wayne	114 min
May 5, 11:51 AM EDT	Areal Flood Advisory	BGM	Lackawanna, Luzerne, Wyoming	3 hr
May 5, 1:03 PM EDT	Mesoscale Discussion	SPC	Lancaster	2 hr
May 8, 3:36 AM EDT	Frost Advisory	CLE	Crawford, Erie	27 hr
May 8, 4:05 AM EDT	Frost Advisory	CTP	Bedford, Blair, Cambria, Centre, Clearfield, Clinton and 14 more	28 hr
May 8, 4:09 AM EDT	Frost Advisory	PBZ	Armstrong, Butler, Clarion, Forest, Jefferson, Lawrence and 2 more	28 hr
May 8, 2:53 PM EDT	Frost Advisory	BGM	Lackawanna, Luzerne	17 hr
May 9, 2:06 PM EDT	Special Weather Statement	CLE	Crawford, Erie	84 min
May 9, 3:10 PM EDT	Frost Advisory	CLE	Crawford, Erie	15 hr
May 9, 6:44 PM EDT	Areal Flood Advisory	PBZ	Lawrence	6 hr
May 10, 12:29 PM EDT	Frost Advisory	CLE	Crawford, Erie	15 hr
May 10, 12:44 PM EDT	Frost Advisory	PBZ	Clarion, Forest, Jefferson, Mercer, Venango	14 hr
May 10, 2:31 PM EDT	Frost Advisory	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming	17 hr
May 10, 6:33 PM EDT	Frost Advisory	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 5 more	13 hr
May 11, 3:13 AM EDT	Freeze Watch	PBZ	Fayette	9 hr
May 11, 11:52 AM EDT	Frost Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 4 more	19 hr
May 11, 2:58 PM EDT	Freeze Watch	CTP	Cambria, Somerset	3 hr
May 12, 3:03 AM EDT	Frost Advisory	BGM	Bradford, Lackawanna, Pike, Susquehanna, Wayne, Wyoming	29 hr
May 12, 3:58 AM EDT	Frost Advisory	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 9 more	28 hr
May 12, 11:40 AM EDT	Frost Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	20 hr
May 12, 2:15 PM EDT	Frost Advisory	CLE	Crawford, Erie	17 hr
May 16, 1:05 PM EDT	Special Weather Statement	BGM	Wayne	40 min
May 16, 1:55 PM EDT	Special Weather Statement	CTP	York	20 min
May 16, 1:56 PM EDT	Special Weather Statement	CTP	York	19 min
May 23, 1:20 PM EDT	Mesoscale Discussion	SPC	Berks, Bradford, Cameron, Carbon, Centre, Clearfield and 27 more	115 min
May 24, 7:24 AM EDT	Special Weather Statement	PBZ	Allegheny	36 min
May 24, 8:06 AM EDT	Special Weather Statement	PBZ	Westmoreland	39 min
May 24, 10:27 AM EDT	Areal Flood Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Indiana, Westmoreland	3 hr
May 26, 11:55 AM EDT	Special Weather Statement	PBZ	Westmoreland	35 min
May 26, 12:14 PM EDT	Special Weather Statement	PBZ	Westmoreland	31 min
May 26, 12:16 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 39 more	119 min
May 26, 12:34 PM EDT	Special Weather Statement	PBZ	Westmoreland	26 min
May 26, 12:38 PM EDT	Special Weather Statement	CTP	Cambria	52 min
May 26, 12:59 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 50 more	7 hr
May 26, 1:13 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	17 min
May 26, 1:23 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk	41 min
May 26, 2:00 PM EDT	Special Weather Statement	CTP	Juniata	45 min
May 26, 2:07 PM EDT	Special Weather Statement	CTP	Franklin	23 min
May 26, 2:11 PM EDT	Special Weather Statement	CTP	Mifflin	49 min
May 26, 2:16 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry, Snyder	44 min
May 26, 2:24 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	51 min
May 26, 2:29 PM EDT	Special Weather Statement	BGM	Luzerne	31 min
May 26, 2:31 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	39 min
May 26, 2:33 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Lebanon, Northumberland, Perry, Schuylkill and 1 more	57 min
May 26, 2:42 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	50 min
May 26, 2:43 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	32 min
May 26, 2:46 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Snyder	20 min
May 26, 2:48 PM EDT	Severe Thunderstorm Watch	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	7 hr
May 26, 3:08 PM EDT	Special Weather Statement	PBZ	Venango	37 min
May 26, 3:09 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Perry	51 min
May 26, 3:23 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	82 min
May 26, 3:29 PM EDT	Special Weather Statement	BGM	Wyoming	31 min
May 26, 3:35 PM EDT	Severe Thunderstorm Warning	CTP	Adams	44 min
May 26, 3:39 PM EDT	Severe Thunderstorm Warning	PHI	Berks	56 min
May 26, 3:41 PM EDT	Special Weather Statement	BGM	Luzerne, Wyoming	34 min
May 26, 3:51 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon	54 min
May 26, 4:03 PM EDT	Special Weather Statement	CTP	Lancaster, York	27 min
May 26, 4:09 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Wyoming	36 min
May 26, 4:10 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	65 min
May 26, 4:14 PM EDT	Special Weather Statement	BGM	Wyoming	31 min
May 26, 4:21 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	26 min
May 26, 4:23 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	22 min
May 26, 4:26 PM EDT	Special Weather Statement	BGM	Susquehanna	34 min
May 26, 4:36 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	24 min
May 26, 4:37 PM EDT	Special Weather Statement	CTP	Lancaster	23 min
May 26, 4:41 PM EDT	Mesoscale Discussion	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 12 more	64 min
May 26, 4:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	44 min
May 26, 4:47 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	43 min
May 26, 4:52 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	38 min
May 26, 5:00 PM EDT	Special Weather Statement	CTP	Adams	30 min
May 26, 5:00 PM EDT	Special Weather Statement	PBZ	Greene	30 min
May 26, 5:02 PM EDT	Special Weather Statement	CTP	Lancaster	28 min
May 26, 5:06 PM EDT	Special Weather Statement	BGM	Wayne	24 min
May 26, 5:17 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	43 min
May 26, 5:19 PM EDT	Special Weather Statement	PBZ	Allegheny	26 min
May 26, 5:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia	48 min
May 26, 5:29 PM EDT	Special Weather Statement	CTP	Lancaster	16 min
May 26, 5:32 PM EDT	Special Weather Statement	BGM	Bradford	28 min
May 26, 5:34 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	41 min
May 26, 5:37 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	23 min
May 26, 5:37 PM EDT	Severe Thunderstorm Warning	PHI	Chester	53 min
May 26, 5:47 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	28 min
May 26, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	67 min
May 26, 6:06 PM EDT	Special Weather Statement	PBZ	Indiana, Westmoreland	24 min
May 26, 6:13 PM EDT	Special Weather Statement	CTP	Cambria	32 min
May 26, 6:16 PM EDT	Special Weather Statement	BGM	Susquehanna	29 min
May 26, 6:17 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	12 min
May 26, 6:30 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	15 min
May 26, 6:34 PM EDT	Mesoscale Discussion	SPC	Bucks, Chester, Delaware, Montgomery, Philadelphia	116 min
May 26, 6:35 PM EDT	Special Weather Statement	CTP	Lebanon	25 min
May 26, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Blair	37 min
May 26, 6:46 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Susquehanna, Wyoming	25 min
May 26, 6:48 PM EDT	Special Weather Statement	BGM	Susquehanna	27 min
May 26, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	Berks	38 min
May 26, 6:53 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	37 min
May 26, 7:09 PM EDT	Special Weather Statement	CTP	Huntingdon	36 min
May 26, 7:16 PM EDT	Special Weather Statement	BGM	Wayne	44 min
May 26, 7:22 PM EDT	Special Weather Statement	CTP	Lancaster	23 min
May 26, 7:32 PM EDT	Special Weather Statement	CTP	Mifflin	13 min
May 26, 7:42 PM EDT	Special Weather Statement	CTP	Juniata, Mifflin	33 min
May 26, 8:04 PM EDT	Special Weather Statement	CTP	Snyder	26 min
May 26, 8:10 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry, Snyder	35 min
May 26, 8:13 PM EDT	Special Weather Statement	BGM	Pike	62 min
May 26, 8:29 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland	32 min
May 26, 8:47 PM EDT	Special Weather Statement	CTP	Schuylkill	28 min
May 26, 9:15 PM EDT	Special Weather Statement	CTP	Schuylkill	30 min
May 26, 9:26 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	34 min
May 26, 9:32 PM EDT	Special Weather Statement	PHI	Carbon	43 min
May 26, 9:33 PM EDT	Special Weather Statement	CTP	Lancaster, York	42 min
May 27, 3:52 PM EDT	Beach Hazards Statement	CLE	Erie	60 hr
May 27, 9:45 PM EDT	Coastal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	58 hr
May 28, 2:30 PM EDT	Wind Advisory	CLE	Erie	18 hr
May 30, 5:29 PM EDT	Frost Advisory	CTP	Elk, McKean, Potter, Warren	14 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	38
Tornado Warning	4
Severe Thunderstorm Watch	2
Mesoscale Discussion	7
Special Weather Statement	49
Flooding
Areal Flood Warning	1
Flash Flood Warning	1
Flash Flood Watch	1
Areal Flood Advisory	6
Cold
Freeze Watch	2
Frost Advisory	15
Wind and dust
Wind Advisory	2
Coast and beach
Coastal Flood Advisory	1
Beach Hazards Statement	1

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 2020 2022

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.