Weather alerts in Pennsylvania, October 2021

142 weather alerts in October 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 October 2021. Tap one for its archive.

Alerts: 142
Warnings: 55
Watches: 5
Advisories: 29
Busiest day: October 16, 202127 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
Oct 3, 3:33 AM EDT	Dense Fog Advisory	PHI	Bucks, Chester, Delaware, Montgomery	6 hr
Oct 4, 12:07 PM EDT	Areal Flood Advisory	BGM	Lackawanna, Luzerne	78 min
Oct 4, 4:44 PM EDT	Special Weather Statement	CLE	Crawford, Erie	91 min
Oct 4, 4:44 PM EDT	Mesoscale Discussion	SPC	Bucks, Chester, Delaware, Lancaster, Montgomery, Philadelphia and 1 more	2 hr
Oct 4, 5:30 PM EDT	Areal Flood Advisory	BGM	Bradford	3 hr
Oct 4, 9:30 PM EDT	Areal Flood Advisory	CTP	Lycoming, Sullivan	90 min
Oct 4, 10:36 PM EDT	Areal Flood Advisory	CTP	Columbia, Lycoming, Sullivan	54 min
Oct 4, 11:27 PM EDT	Areal Flood Advisory	CTP	Columbia, Sullivan	93 min
Oct 4, 11:57 PM EDT	Areal Flood Advisory	BGM	Luzerne	112 min
Oct 5, 12:32 AM EDT	Special Weather Statement	PHI	Chester	43 min
Oct 5, 1:24 AM EDT	Special Weather Statement	PHI	Montgomery	36 min
Oct 5, 2:10 AM EDT	Areal Flood Advisory	PHI	Delaware, Montgomery, Philadelphia	4 hr
Oct 5, 2:27 AM EDT	Flash Flood Warning	PHI	Delaware, Philadelphia	3 hr
Oct 5, 5:00 AM EDT	Dense Fog Advisory	CLE	Crawford, Erie	5 hr
Oct 8, 5:24 AM EDT	Coastal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	4 days
Oct 8, 7:19 AM EDT	Dense Fog Advisory	CTP	Bedford, Blair, Centre, Fulton, Huntingdon, Juniata and 1 more	101 min
Oct 9, 1:56 AM EDT	Areal Flood Advisory	CLE	Crawford, Erie	8 hr
Oct 9, 2:06 AM EDT	Areal Flood Advisory	PBZ	Mercer	66 min
Oct 9, 4:54 PM EDT	Areal Flood Advisory	PBZ	Beaver, Washington	60 min
Oct 14, 3:10 AM EDT	Dense Fog Advisory	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	6 hr
Oct 14, 3:16 AM EDT	Dense Fog Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	3 hr
Oct 15, 11:36 AM EDT	Special Weather Statement	PBZ	Jefferson	39 min
Oct 15, 12:02 PM EDT	Special Weather Statement	CTP	Clearfield	28 min
Oct 15, 12:17 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	43 min
Oct 15, 12:36 PM EDT	Mesoscale Discussion	SPC	Cameron, Centre, Clarion, Clearfield, Elk, Forest and 1 more	84 min
Oct 15, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	47 min
Oct 15, 1:45 PM EDT	Special Weather Statement	CTP	Centre	30 min
Oct 15, 1:59 PM EDT	Mesoscale Discussion	SPC	Crawford, Erie, Mercer	91 min
Oct 15, 2:31 PM EDT	Special Weather Statement	CLE	Crawford	29 min
Oct 15, 2:43 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	44 min
Oct 15, 2:55 PM EDT	Tornado Warning	CLE	Crawford	32 min
Oct 15, 3:33 PM EDT	Special Weather Statement	CTP	Warren	27 min
Oct 15, 4:09 PM EDT	Special Weather Statement	CTP	Warren	21 min
Oct 15, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	Warren	32 min
Oct 15, 11:06 PM EDT	Special Weather Statement	CTP	Mifflin	54 min
Oct 16, 4:52 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	38 min
Oct 16, 5:37 AM EDT	Special Weather Statement	PBZ	Beaver	38 min
Oct 16, 5:47 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	43 min
Oct 16, 6:07 AM EDT	Tornado Warning	PBZ	Beaver	23 min
Oct 16, 6:54 AM EDT	Tornado Warning	PBZ	Butler	21 min
Oct 16, 7:23 AM EDT	Special Weather Statement	PBZ	Clarion	22 min
Oct 16, 7:40 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Jefferson	35 min
Oct 16, 8:13 AM EDT	Severe Thunderstorm Warning	CTP	Elk	47 min
Oct 16, 8:13 AM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	17 min
Oct 16, 8:47 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter	43 min
Oct 16, 9:28 AM EDT	Special Weather Statement	CTP	Potter	32 min
Oct 16, 10:18 AM EDT	Special Weather Statement	CTP	Centre	27 min
Oct 16, 10:54 AM EDT	Special Weather Statement	CTP	Lycoming	36 min
Oct 16, 11:06 AM EDT	Mesoscale Discussion	SPC	Berks, Bradford, Carbon, Columbia, Cumberland, Dauphin and 20 more	114 min
Oct 16, 11:39 AM EDT	Special Weather Statement	CTP	Sullivan	36 min
Oct 16, 12:35 PM EDT	Severe Thunderstorm Watch	SPC	Lackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming	6 hr
Oct 16, 1:27 PM EDT	Special Weather Statement	CTP	Dauphin, Lancaster, Lebanon, Schuylkill	63 min
Oct 16, 1:39 PM EDT	Special Weather Statement	PHI	Berks	51 min
Oct 16, 1:50 PM EDT	Mesoscale Discussion	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 4 more	115 min
Oct 16, 2:29 PM EDT	Special Weather Statement	CTP	Lancaster	31 min
Oct 16, 2:32 PM EDT	Special Weather Statement	PHI	Berks, Lehigh	58 min
Oct 16, 2:44 PM EDT	Special Weather Statement	PHI	Chester	61 min
Oct 16, 3:31 PM EDT	Severe Thunderstorm Warning	PHI	Chester	18 min
Oct 16, 3:41 PM EDT	Special Weather Statement	PHI	Bucks	49 min
Oct 16, 4:02 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	43 min
Oct 16, 4:18 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery, Philadelphia	57 min
Oct 21, 2:03 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	27 min
Oct 21, 2:36 PM EDT	Special Weather Statement	PBZ	Mercer, Venango	24 min
Oct 21, 2:39 PM EDT	Mesoscale Discussion	SPC	Allegheny, Beaver, Butler, Clarion, Crawford, Erie and 6 more	3 hr
Oct 21, 2:50 PM EDT	Special Weather Statement	PBZ	Lawrence	25 min
Oct 21, 3:18 PM EDT	Special Weather Statement	PBZ	Butler, Lawrence	27 min
Oct 21, 3:49 PM EDT	Special Weather Statement	PBZ	Clarion, Forest, Venango	41 min
Oct 21, 4:08 PM EDT	Special Weather Statement	PBZ	Washington	37 min
Oct 21, 4:32 PM EDT	Special Weather Statement	PBZ	Clarion, Forest, Jefferson	43 min
Oct 21, 4:47 PM EDT	Special Weather Statement	PBZ	Allegheny, Washington	43 min
Oct 21, 5:25 PM EDT	Mesoscale Discussion	SPC	Lawrence, Mercer	2 hr
Oct 21, 5:48 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson	27 min
Oct 21, 6:00 PM EDT	Special Weather Statement	PBZ	Lawrence, Mercer, Venango	45 min
Oct 21, 6:01 PM EDT	Special Weather Statement	CTP	Cameron	44 min
Oct 21, 6:18 PM EDT	Special Weather Statement	PBZ	Beaver	42 min
Oct 21, 6:23 PM EDT	Special Weather Statement	CTP	Clinton	37 min
Oct 21, 6:42 PM EDT	Tornado Warning	PBZ	Mercer	18 min
Oct 21, 6:54 PM EDT	Special Weather Statement	CTP	Tioga	66 min
Oct 21, 6:56 PM EDT	Tornado Warning	PBZ	Beaver, Butler, Lawrence	19 min
Oct 21, 6:57 PM EDT	Tornado Warning	PBZ	Washington	33 min
Oct 21, 7:13 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	47 min
Oct 21, 7:13 PM EDT	Tornado Warning	PBZ	Greene, Washington	32 min
Oct 21, 7:19 PM EDT	Special Weather Statement	PBZ	Allegheny, Beaver, Butler	41 min
Oct 21, 7:24 PM EDT	Tornado Warning	PBZ	Butler	36 min
Oct 21, 7:26 PM EDT	Tornado Warning	PBZ	Washington	34 min
Oct 21, 7:37 PM EDT	Special Weather Statement	BGM	Bradford	38 min
Oct 21, 7:40 PM EDT	Tornado Warning	PBZ	Allegheny, Beaver, Westmoreland	20 min
Oct 21, 7:56 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Butler, Cambria, Clarion, Clearfield and 6 more	2 hr
Oct 21, 8:07 PM EDT	Tornado Warning	PBZ	Allegheny, Washington	23 min
Oct 21, 8:59 PM EDT	Special Weather Statement	PBZ	Indiana	31 min
Oct 21, 9:06 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	24 min
Oct 21, 9:13 PM EDT	Special Weather Statement	CTP	Cambria	47 min
Oct 21, 9:15 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	15 min
Oct 21, 9:33 PM EDT	Special Weather Statement	CTP	Blair, Cambria	42 min
Oct 21, 9:39 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	36 min
Oct 21, 9:52 PM EDT	Severe Thunderstorm Warning	CTP	Blair	38 min
Oct 21, 10:45 PM EDT	Special Weather Statement	CTP	Huntingdon, Juniata, Mifflin	30 min
Oct 24, 3:09 PM EDT	Flash Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	48 hr
Oct 25, 3:01 PM EDT	Flash Flood Watch	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	33 hr
Oct 25, 6:33 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	42 min
Oct 25, 6:41 PM EDT	Mesoscale Discussion	SPC	Berks, Bucks, Chester, Delaware, Lancaster, Lehigh and 3 more	2 hr
Oct 25, 6:57 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware	48 min
Oct 25, 7:01 PM EDT	Special Weather Statement	CTP	Lancaster, York	59 min
Oct 25, 7:34 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	26 min
Oct 25, 7:43 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	47 min
Oct 25, 8:33 PM EDT	Special Weather Statement	PHI	Northampton	42 min
Oct 26, 12:31 AM EDT	Areal Flood Warning	PHI	Berks, Chester, Delaware, Montgomery	5 hr
Oct 26, 2:08 AM EDT	Flash Flood Warning	PHI	Bucks	4 hr
Oct 26, 6:09 AM EDT	Areal Flood Warning	PHI	Bucks	3 hr
Oct 26, 10:27 AM EDT	Areal Flood Advisory	PHI	Monroe, Northampton	4 hr
Oct 26, 11:13 AM EDT	Areal Flood Advisory	BGM	Pike, Wayne	29 min
Oct 26, 11:42 AM EDT	Flash Flood Warning	BGM	Pike, Wayne	4 hr
Oct 26, 12:20 PM EDT	Areal Flood Warning	PHI	Carbon, Monroe, Northampton	7 hr
Oct 26, 3:04 PM EDT	River Flood Warning	BGM	Wayne	36 hr
Oct 26, 3:05 PM EDT	River Flood Warning	BGM	Pike	42 hr
Oct 26, 3:20 PM EDT	Areal Flood Warning	BGM	Susquehanna, Wayne	115 min
Oct 26, 3:30 PM EDT	Areal Flood Warning	BGM	Pike, Wayne	3 hr
Oct 26, 4:26 PM EDT	River Flood Warning	BGM	Susquehanna	32 hr
Oct 26, 6:39 PM EDT	River Flood Warning	BGM	Pike, Wayne	21 hr
Oct 27, 12:14 AM EDT	River Flood Warning	BGM	Bradford	44 hr
Oct 27, 12:50 AM EDT	River Flood Warning	BGM	Wyoming	7 hr
Oct 27, 4:26 AM EDT	River Flood Warning	PHI	Monroe, Northampton	26 hr
Oct 27, 4:26 AM EDT	River Flood Warning	PHI	Northampton	38 hr
Oct 27, 9:55 AM EDT	River Flood Warning	PHI	Bucks	29 hr
Oct 27, 10:16 AM EDT	River Flood Warning	BGM	Bradford	19 hr
Oct 27, 5:08 PM EDT	Coastal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	34 hr
Oct 27, 10:17 PM EDT	River Flood Warning	BGM	Wyoming	12 hr
Oct 28, 3:22 AM EDT	Coastal Flood Watch	PHI	Bucks, Delaware, Philadelphia	15 hr
Oct 28, 11:38 AM EDT	Wind Advisory	PBZ	Fayette, Westmoreland	30 hr
Oct 28, 1:58 PM EDT	Wind Advisory	CTP	Cambria, Somerset	27 hr
Oct 28, 6:20 PM EDT	Coastal Flood Warning	PHI	Bucks, Delaware, Philadelphia	55 hr
Oct 29, 2:38 PM EDT	Areal Flood Advisory	CLE	Crawford, Erie	3 hr
Oct 29, 2:55 PM EDT	Flash Flood Watch	BGM	Bradford	11 hr
Oct 29, 6:10 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware	3 hr
Oct 29, 7:38 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	3 hr
Oct 29, 8:09 PM EDT	Areal Flood Advisory	BGM	Bradford	4 hr
Oct 29, 8:51 PM EDT	Areal Flood Advisory	PHI	Bucks, Philadelphia	3 hr
Oct 29, 9:28 PM EDT	Areal Flood Advisory	BGM	Bradford	4 hr
Oct 29, 9:48 PM EDT	Flash Flood Warning	BGM	Bradford	2 hr
Oct 29, 10:07 PM EDT	Areal Flood Advisory	CTP	Lycoming, Sullivan, Tioga	3 hr
Oct 30, 3:45 AM EDT	River Flood Warning	BGM	Bradford	23 hr
Oct 30, 4:41 PM EDT	Coastal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	31 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	22
Tornado Warning	11
Severe Thunderstorm Watch	1
Mesoscale Discussion	9
Special Weather Statement	44
Flooding
Areal Flood Warning	5
Flash Flood Warning	4
River Flood Warning	12
Flash Flood Watch	3
Areal Flood Advisory	19
Wind and dust
Wind Advisory	2
Fog and smoke
Dense Fog Advisory	5
Coast and beach
Coastal Flood Warning	1
Coastal Flood Watch	1
Coastal Flood 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. Warning verification from the Mesonet's Cow. Rebuilt daily.