Weather alerts in Pennsylvania, April 2021

100 weather alerts in April 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 April 2021. Tap one for its archive.

Alerts: 100
Warnings: 22
Watches: 12
Advisories: 13
Busiest day: April 28, 202120 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 1, 1:50 PM EDT	Special Weather Statement	PBZ	Allegheny, Beaver	40 min
Apr 1, 2:10 PM EDT	Special Weather Statement	PBZ	Washington	50 min
Apr 1, 2:29 PM EDT	Special Weather Statement	PBZ	Allegheny	31 min
Apr 1, 4:04 PM EDT	Special Weather Statement	CTP	Cameron, Elk, McKean, Potter, Tioga, Warren	3 hr
Apr 1, 4:19 PM EDT	Special Weather Statement	CLE	Crawford	86 min
Apr 1, 4:25 PM EDT	Special Weather Statement	CTP	Bedford, Somerset	50 min
Apr 1, 6:25 PM EDT	Special Weather Statement	PBZ	Allegheny, Beaver, Butler	65 min
Apr 1, 7:15 PM EDT	Special Weather Statement	CTP	Lycoming	60 min
Apr 1, 7:56 PM EDT	Special Weather Statement	CTP	Clearfield	64 min
Apr 1, 8:43 PM EDT	Special Weather Statement	CTP	Centre	62 min
Apr 1, 8:51 PM EDT	Special Weather Statement	CTP	Cambria, Somerset	54 min
Apr 1, 9:03 PM EDT	Special Weather Statement	BGM	Susquehanna, Wyoming	57 min
Apr 1, 9:26 PM EDT	Special Weather Statement	CTP	Blair	19 min
Apr 1, 10:02 PM EDT	Special Weather Statement	CTP	Clinton	43 min
Apr 1, 10:08 PM EDT	Special Weather Statement	CTP	Blair	22 min
Apr 2, 3:34 AM EDT	Special Weather Statement	CTP	Clinton	56 min
Apr 9, 5:16 PM EDT	Special Weather Statement	PBZ	Indiana	29 min
Apr 10, 1:19 AM EDT	Special Weather Statement	PHI	Chester	56 min
Apr 10, 2:34 AM EDT	Special Weather Statement	PHI	Chester	41 min
Apr 10, 2:35 AM EDT	Special Weather Statement	PHI	Delaware	40 min
Apr 10, 3:22 AM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	2 hr
Apr 11, 4:54 PM EDT	Mesoscale Discussion	SPC	Adams, Cumberland, Dauphin, Franklin, Juniata, Lancaster and 3 more	2 hr
Apr 11, 7:30 PM EDT	Areal Flood Advisory	BGM	Bradford	4 hr
Apr 11, 8:00 PM EDT	Special Weather Statement	CTP	Perry	15 min
Apr 11, 8:28 PM EDT	Special Weather Statement	CTP	Franklin	17 min
Apr 11, 8:47 PM EDT	Special Weather Statement	CTP	Franklin	13 min
Apr 11, 9:03 PM EDT	Special Weather Statement	CTP	York	42 min
Apr 11, 9:10 PM EDT	Special Weather Statement	CTP	Cumberland	35 min
Apr 11, 9:29 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Lancaster, York	2 hr
Apr 11, 10:57 PM EDT	Areal Flood Advisory	BGM	Bradford	3 hr
Apr 11, 11:28 PM EDT	Areal Flood Advisory	CTP	Lancaster	2 hr
Apr 12, 1:12 AM EDT	Areal Flood Advisory	PHI	Philadelphia	67 min
Apr 20, 3:54 AM EDT	Winter Weather Advisory	CLE	Erie	30 hr
Apr 20, 7:01 AM EDT	Freeze Watch	PBZ	Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland	19 hr
Apr 20, 8:48 PM EDT	Freeze Watch	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	7 hr
Apr 21, 2:04 AM EDT	Freeze Warning	PBZ	Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland	32 hr
Apr 21, 2:11 AM EDT	Freeze Watch	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Huntingdon and 10 more	5 hr
Apr 21, 3:26 AM EDT	Freeze Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	30 hr
Apr 21, 7:07 AM EDT	Freeze Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Huntingdon and 10 more	26 hr
Apr 21, 11:49 AM EDT	Mesoscale Discussion	SPC	Bucks, Delaware, Philadelphia	2 hr
Apr 21, 12:03 PM EDT	Special Weather Statement	PHI	Chester, Lehigh	42 min
Apr 21, 12:17 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	43 min
Apr 21, 12:25 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	50 min
Apr 21, 12:28 PM EDT	Severe Thunderstorm Watch	SPC	Bucks, Chester, Delaware, Lehigh, Montgomery, Northampton and 1 more	5 hr
Apr 21, 12:54 PM EDT	Special Weather Statement	PHI	Delaware	36 min
Apr 21, 12:55 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Northampton	27 min
Apr 21, 1:10 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	50 min
Apr 21, 1:17 PM EDT	Special Weather Statement	PHI	Bucks	58 min
Apr 21, 1:25 PM EDT	Freeze Watch	PBZ	Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland	13 hr
Apr 22, 2:33 AM EDT	Special Weather Statement	CTP	Cambria	87 min
Apr 22, 2:39 AM EDT	Freeze Warning	PBZ	Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland	30 hr
Apr 22, 4:04 AM EDT	Special Weather Statement	CTP	Bedford	86 min
Apr 22, 4:09 AM EDT	Special Weather Statement	CTP	Bedford	81 min
Apr 22, 8:58 AM EDT	Freeze Watch	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	6 hr
Apr 22, 9:16 AM EDT	Freeze Watch	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Huntingdon and 10 more	4 hr
Apr 22, 1:06 PM EDT	Freeze Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Huntingdon and 10 more	20 hr
Apr 22, 2:31 PM EDT	Frost Advisory	PHI	Delaware, Philadelphia	17 hr
Apr 22, 2:31 PM EDT	Freeze Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	17 hr
Apr 25, 4:33 PM EDT	Frost Advisory	PBZ	Allegheny, Beaver, Fayette, Greene, Washington	15 hr
Apr 25, 4:33 PM EDT	Freeze Warning	PBZ	Armstrong, Butler, Fayette, Lawrence, Westmoreland	15 hr
Apr 28, 1:06 PM EDT	Mesoscale Discussion	SPC	Bradford, Cameron, Centre, Clarion, Clearfield, Clinton and 12 more	114 min
Apr 28, 4:06 PM EDT	Special Weather Statement	CTP	McKean, Potter, Warren	39 min
Apr 28, 4:11 PM EDT	Special Weather Statement	CLE	Crawford	49 min
Apr 28, 4:49 PM EDT	Special Weather Statement	CTP	Potter	26 min
Apr 28, 5:14 PM EDT	Special Weather Statement	CTP	Potter, Tioga	46 min
Apr 28, 5:31 PM EDT	Special Weather Statement	PBZ	Forest	29 min
Apr 28, 5:35 PM EDT	Special Weather Statement	BGM	Bradford	55 min
Apr 28, 5:40 PM EDT	Special Weather Statement	CTP	Elk	35 min
Apr 28, 5:56 PM EDT	Special Weather Statement	CTP	Cameron, Elk	34 min
Apr 28, 6:29 PM EDT	Special Weather Statement	BGM	Wyoming	46 min
Apr 28, 6:30 PM EDT	Special Weather Statement	CTP	Lycoming	30 min
Apr 28, 6:35 PM EDT	Special Weather Statement	CLE	Crawford	25 min
Apr 28, 6:45 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	30 min
Apr 28, 7:02 PM EDT	Special Weather Statement	CTP	Sullivan	28 min
Apr 28, 7:04 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Wayne, Wyoming	11 min
Apr 28, 7:18 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Pike, Wayne	42 min
Apr 28, 7:25 PM EDT	Special Weather Statement	CTP	Sullivan	35 min
Apr 28, 7:37 PM EDT	Special Weather Statement	BGM	Luzerne	53 min
Apr 28, 7:42 PM EDT	Special Weather Statement	PHI	Monroe	48 min
Apr 28, 7:57 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	33 min
Apr 28, 8:16 PM EDT	Special Weather Statement	PBZ	Forest	29 min
Apr 28, 9:57 PM EDT	Special Weather Statement	CTP	Clearfield	33 min
Apr 29, 3:32 AM EDT	High Wind Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	16 hr
Apr 29, 3:58 AM EDT	High Wind Watch	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Lancaster and 4 more	16 hr
Apr 29, 2:33 PM EDT	Freeze Watch	CTP	Cambria, Centre, Clearfield, Somerset, Warren	24 hr
Apr 29, 2:46 PM EDT	Freeze Watch	CLE	Crawford, Erie	24 hr
Apr 29, 3:37 PM EDT	Wind Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	34 hr
Apr 29, 6:51 PM EDT	Special Weather Statement	BGM	Susquehanna, Wyoming	54 min
Apr 29, 7:23 PM EDT	High Wind Warning	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	26 hr
Apr 29, 7:41 PM EDT	Special Weather Statement	BGM	Lackawanna, Wayne, Wyoming	64 min
Apr 29, 7:45 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	45 min
Apr 29, 8:05 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	34 min
Apr 29, 8:21 PM EDT	High Wind Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Lancaster and 4 more	27 hr
Apr 29, 8:21 PM EDT	Wind Advisory	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 24 more	30 hr
Apr 30, 12:59 AM EDT	Freeze Watch	PBZ	Armstrong, Butler, Clarion, Fayette, Forest, Jefferson and 4 more	12 hr
Apr 30, 12:59 AM EDT	Wind Advisory	PBZ	Fayette, Jefferson, Westmoreland	20 hr
Apr 30, 12:59 PM EDT	Frost Advisory	PBZ	Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland	20 hr
Apr 30, 12:59 PM EDT	Freeze Warning	PBZ	Armstrong, Butler, Clarion, Fayette, Forest, Jefferson and 4 more	20 hr
Apr 30, 2:26 PM EDT	Freeze Warning	CTP	Cambria, Centre, Clearfield, Somerset, Warren	18 hr
Apr 30, 2:55 PM EDT	Freeze Warning	CLE	Crawford, Erie	17 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	10
Severe Thunderstorm Watch	1
Mesoscale Discussion	3
Special Weather Statement	50
Flooding
Areal Flood Advisory	6
Winter
Winter Weather Advisory	1
Cold
Freeze Warning	10
Freeze Watch	9
Frost Advisory	3
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	3

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.