Weather alerts in Pennsylvania, December 2023

166 weather alerts in December 2023, 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 December 2023. Tap one for its archive.

Alerts: 166
Warnings: 92
Watches: 11
Advisories: 39
Busiest day: December 18, 202374 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
Dec 2, 5:05 AM EST	Dense Fog Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 3 more	5 hr
Dec 2, 8:05 AM EST	Dense Fog Advisory	CTP	Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 10 more	115 min
Dec 2, 8:05 PM EST	Dense Fog Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	6 hr
Dec 3, 8:10 AM EST	Dense Fog Advisory	CLE	Crawford, Erie	4 hr
Dec 3, 1:36 PM EST	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 12 more	114 min
Dec 3, 2:20 PM EST	Special Weather Statement	PBZ	Allegheny	25 min
Dec 3, 4:11 PM EST	Special Weather Statement	PBZ	Westmoreland	34 min
Dec 3, 5:17 PM EST	Special Weather Statement	CTP	Blair, Cambria, Cameron, Clearfield, Elk	28 min
Dec 3, 5:18 PM EST	Special Weather Statement	CLE	Erie	42 min
Dec 3, 5:21 PM EST	Special Weather Statement	PBZ	Washington	24 min
Dec 3, 5:28 PM EST	Special Weather Statement	CTP	Blair	32 min
Dec 3, 5:41 PM EST	Severe Thunderstorm Warning	CTP	Centre, Clearfield	49 min
Dec 3, 5:58 PM EST	Special Weather Statement	CTP	Huntingdon, Mifflin	32 min
Dec 3, 6:16 PM EST	Special Weather Statement	CTP	Union	29 min
Dec 3, 6:37 PM EST	Special Weather Statement	CTP	Montour, Snyder, Union	23 min
Dec 3, 7:21 PM EST	Special Weather Statement	CTP	Lebanon, Schuylkill	114 min
Dec 7, 6:22 AM EST	Special Weather Statement	CTP	Clinton, Potter, Snyder, Union	53 min
Dec 7, 7:20 AM EST	Special Weather Statement	CTP	Northumberland, Union	55 min
Dec 8, 2:50 PM EST	Flood Watch	CTP	Columbia, Dauphin, Lancaster, Lebanon, Montour, Northumberland and 3 more	58 hr
Dec 8, 2:57 PM EST	Flood Watch	BGM	Lackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming	60 hr
Dec 8, 3:26 PM EST	Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	66 hr
Dec 9, 3:06 AM EST	Dense Fog Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	8 hr
Dec 10, 3:10 AM EST	Winter Weather Advisory	PHI	Carbon, Monroe	30 hr
Dec 10, 3:29 AM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	36 hr
Dec 10, 11:07 AM EST	Winter Weather Advisory	CTP	Columbia, Schuylkill, Sullivan	18 hr
Dec 10, 6:51 PM EST	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Dec 10, 7:08 PM EST	Areal Flood Advisory	PHI	Delaware	4 hr
Dec 10, 7:27 PM EST	Areal Flood Advisory	PHI	Bucks, Delaware, Montgomery, Philadelphia	8 hr
Dec 10, 11:04 PM EST	Areal Flood Warning	PHI	Chester, Delaware	6 hr
Dec 10, 11:36 PM EST	Areal Flood Warning	PHI	Montgomery	9 hr
Dec 10, 11:42 PM EST	Areal Flood Warning	PHI	Montgomery	4 hr
Dec 11, 12:44 AM EST	Areal Flood Warning	PHI	Bucks	9 hr
Dec 11, 1:19 AM EST	Areal Flood Warning	PHI	Montgomery, Philadelphia	8 hr
Dec 11, 1:34 AM EST	Areal Flood Warning	PHI	Berks	7 hr
Dec 11, 2:43 AM EST	River Flood Warning	PHI	Bucks	10 hr
Dec 11, 3:02 AM EST	River Flood Warning	PHI	Chester	4 hr
Dec 11, 4:26 AM EST	Areal Flood Warning	PHI	Lehigh	6 hr
Dec 11, 6:45 AM EST	Special Weather Statement	PBZ	Allegheny	30 min
Dec 11, 8:13 AM EST	Special Weather Statement	CTP	Clearfield	62 min
Dec 11, 9:27 AM EST	Special Weather Statement	CTP	Centre	18 min
Dec 15, 3:36 PM EST	Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	69 hr
Dec 16, 1:38 PM EST	Flood Watch	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	50 hr
Dec 16, 1:39 PM EST	Flood Watch	CTP	Adams, Columbia, Cumberland, Dauphin, Juniata, Lancaster and 11 more	46 hr
Dec 16, 1:58 PM EST	Winter Storm Watch	PBZ	Fayette, Westmoreland	24 hr
Dec 16, 1:58 PM EST	Coastal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	52 hr
Dec 17, 3:22 AM EST	Winter Storm Watch	CTP	Somerset	11 hr
Dec 17, 9:19 AM EST	Dense Fog Advisory	PHI	Carbon, Monroe	7 hr
Dec 17, 9:24 AM EST	Dense Fog Advisory	CTP	Schuylkill	7 hr
Dec 17, 2:11 PM EST	Winter Storm Warning	PBZ	Fayette, Westmoreland	44 hr
Dec 17, 2:11 PM EST	Winter Weather Advisory	PBZ	Clarion, Forest, Indiana, Jefferson, Mercer, Venango	44 hr
Dec 17, 2:20 PM EST	Winter Storm Watch	CTP	Warren	15 hr
Dec 17, 2:20 PM EST	Winter Storm Warning	CTP	Somerset	44 hr
Dec 17, 2:20 PM EST	Winter Weather Advisory	CTP	Cambria, Clearfield, Elk, McKean, Warren	44 hr
Dec 17, 2:23 PM EST	Winter Storm Watch	CLE	Crawford, Erie	14 hr
Dec 17, 11:44 PM EST	Areal Flood Advisory	PHI	Lehigh, Northampton	4 hr
Dec 18, 12:37 AM EST	Areal Flood Advisory	CTP	Adams, Columbia, Cumberland, Dauphin, Juniata, Lancaster and 10 more	6 hr
Dec 18, 1:00 AM EST	Areal Flood Advisory	PHI	Chester, Montgomery	8 hr
Dec 18, 1:01 AM EST	Areal Flood Advisory	PHI	Lehigh, Montgomery	22 min
Dec 18, 1:03 AM EST	Areal Flood Advisory	PHI	Lehigh	3 hr
Dec 18, 1:23 AM EST	Areal Flood Warning	PHI	Lehigh, Montgomery	15 hr
Dec 18, 1:51 AM EST	Areal Flood Warning	PHI	Chester	16 hr
Dec 18, 1:59 AM EST	Areal Flood Advisory	BGM	Bradford, Luzerne, Wyoming	3 hr
Dec 18, 2:05 AM EST	River Flood Warning	PHI	Chester	20 hr
Dec 18, 2:08 AM EST	Areal Flood Warning	PHI	Chester, Delaware	12 hr
Dec 18, 2:21 AM EST	Areal Flood Warning	CTP	Columbia, Lancaster, Lebanon, Schuylkill, Sullivan, York	14 hr
Dec 18, 2:30 AM EST	Areal Flood Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	16 hr
Dec 18, 2:45 AM EST	Areal Flood Warning	PHI	Chester	6 hr
Dec 18, 2:46 AM EST	Areal Flood Advisory	BGM	Susquehanna	3 hr
Dec 18, 3:06 AM EST	Areal Flood Advisory	PHI	Bucks, Montgomery	64 min
Dec 18, 3:11 AM EST	Areal Flood Advisory	PHI	Bucks, Montgomery	72 min
Dec 18, 3:22 AM EST	Areal Flood Advisory	PHI	Chester	34 min
Dec 18, 3:35 AM EST	Areal Flood Advisory	BGM	Lackawanna, Wyoming	3 hr
Dec 18, 3:56 AM EST	Areal Flood Warning	PHI	Chester	5 hr
Dec 18, 4:00 AM EST	Areal Flood Warning	PHI	Lehigh	21 hr
Dec 18, 4:07 AM EST	Areal Flood Warning	PHI	Lehigh, Northampton	23 hr
Dec 18, 4:10 AM EST	Areal Flood Warning	PHI	Bucks, Montgomery	14 hr
Dec 18, 4:14 AM EST	Winter Storm Warning	CLE	Crawford, Erie	30 hr
Dec 18, 4:14 AM EST	Winter Weather Advisory	CLE	Erie	30 hr
Dec 18, 4:20 AM EST	River Flood Warning	PHI	Chester, Delaware	22 hr
Dec 18, 4:23 AM EST	Areal Flood Warning	PHI	Bucks, Montgomery	10 hr
Dec 18, 4:27 AM EST	River Flood Warning	PHI	Montgomery	13 hr
Dec 18, 4:34 AM EST	Areal Flood Advisory	BGM	Susquehanna, Wayne	3 hr
Dec 18, 4:35 AM EST	River Flood Warning	PHI	Montgomery, Philadelphia	20 hr
Dec 18, 4:41 AM EST	Areal Flood Warning	PHI	Berks, Chester, Montgomery	14 hr
Dec 18, 4:49 AM EST	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	30 hr
Dec 18, 4:50 AM EST	Areal Flood Warning	BGM	Bradford, Susquehanna	3 hr
Dec 18, 4:51 AM EST	River Flood Warning	PHI	Bucks	18 hr
Dec 18, 4:58 AM EST	Flash Flood Warning	BGM	Wayne	3 hr
Dec 18, 5:00 AM EST	River Flood Warning	PHI	Montgomery	30 hr
Dec 18, 5:19 AM EST	River Flood Warning	PHI	Delaware	9 hr
Dec 18, 5:22 AM EST	Coastal Flood Warning	PHI	Bucks, Delaware, Philadelphia	5 hr
Dec 18, 5:24 AM EST	Flash Flood Warning	BGM	Susquehanna	5 hr
Dec 18, 5:27 AM EST	Flash Flood Warning	BGM	Bradford	4 hr
Dec 18, 5:37 AM EST	River Flood Warning	CTP	Lebanon, Schuylkill	29 hr
Dec 18, 5:53 AM EST	Flash Flood Warning	BGM	Lackawanna, Susquehanna, Wyoming	3 hr
Dec 18, 6:00 AM EST	River Flood Warning	BGM	Wyoming	16 hr
Dec 18, 6:03 AM EST	River Flood Warning	BGM	Bradford	19 hr
Dec 18, 6:17 AM EST	Flash Flood Warning	BGM	Lackawanna, Luzerne	4 hr
Dec 18, 6:23 AM EST	Areal Flood Advisory	PHI	Monroe, Northampton	3 hr
Dec 18, 6:35 AM EST	River Flood Warning	BGM	Susquehanna	71 hr
Dec 18, 6:35 AM EST	River Flood Warning	BGM	Bradford	45 hr
Dec 18, 6:48 AM EST	Flash Flood Warning Considerable damage threat	BGM	Susquehanna	3 hr
Dec 18, 7:15 AM EST	Flash Flood Warning	BGM	Pike	3 hr
Dec 18, 7:27 AM EST	Flash Flood Warning	BGM	Lackawanna, Susquehanna, Wayne	3 hr
Dec 18, 8:04 AM EST	Flash Flood Warning	BGM	Wayne	4 hr
Dec 18, 8:31 AM EST	River Flood Warning	PHI	Berks	11 hr
Dec 18, 8:37 AM EST	Flash Flood Warning	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wyoming	5 hr
Dec 18, 8:46 AM EST	Areal Flood Warning	PHI	Chester	6 hr
Dec 18, 8:48 AM EST	Flash Flood Warning	BGM	Lackawanna, Luzerne, Pike, Wayne	5 hr
Dec 18, 8:58 AM EST	Flash Flood Warning	BGM	Bradford, Lackawanna, Susquehanna, Wyoming	5 hr
Dec 18, 9:02 AM EST	River Flood Warning	BGM	Bradford	53 hr
Dec 18, 9:02 AM EST	River Flood Warning	BGM	Wyoming	21 hr
Dec 18, 9:02 AM EST	River Flood Warning	BGM	Luzerne	69 hr
Dec 18, 9:41 AM EST	River Flood Warning	PHI	Monroe	6 hr
Dec 18, 9:44 AM EST	River Flood Warning	PHI	Monroe	13 hr
Dec 18, 10:06 AM EST	River Flood Warning	PHI	Lehigh, Northampton	12 hr
Dec 18, 10:21 AM EST	Flash Flood Warning	BGM	Lackawanna, Pike, Susquehanna, Wayne	4 hr
Dec 18, 10:22 AM EST	Flash Flood Warning Considerable damage threat	BGM	Lackawanna, Luzerne	4 hr
Dec 18, 10:28 AM EST	Flash Flood Warning	BGM	Pike	4 hr
Dec 18, 11:08 AM EST	River Flood Warning	CTP	Dauphin, Lebanon	29 hr
Dec 18, 11:53 AM EST	River Flood Warning	CTP	Lancaster	14 hr
Dec 18, 2:26 PM EST	River Flood Warning	PHI	Berks	12 hr
Dec 18, 2:59 PM EST	River Flood Warning	PHI	Philadelphia	9 hr
Dec 18, 3:30 PM EST	Special Weather Statement	PBZ	Allegheny, Westmoreland	30 min
Dec 18, 4:00 PM EST	Special Weather Statement	PBZ	Allegheny, Westmoreland	30 min
Dec 18, 4:07 PM EST	Special Weather Statement	PBZ	Greene	23 min
Dec 18, 5:50 PM EST	Special Weather Statement	PBZ	Butler	25 min
Dec 18, 6:22 PM EST	Special Weather Statement	CTP	Cumberland	38 min
Dec 19, 2:15 AM EST	River Flood Warning	PHI	Bucks	16 hr
Dec 19, 2:17 AM EST	River Flood Warning	PHI	Northampton	16 hr
Dec 19, 2:20 AM EST	Special Weather Statement	PBZ	Armstrong	25 min
Dec 19, 3:27 AM EST	River Flood Warning	CTP	Columbia	11 hr
Dec 19, 4:36 AM EST	River Flood Warning	CTP	Columbia, Montour, Northumberland, Union	23 hr
Dec 19, 6:06 AM EST	River Flood Warning	CTP	Dauphin	15 hr
Dec 19, 6:36 AM EST	Special Weather Statement	PBZ	Fayette, Washington	39 min
Dec 23, 3:20 AM EST	Special Weather Statement	CTP	Sullivan	55 min
Dec 23, 8:13 PM EST	Winter Weather Advisory	BGM	Wayne	14 hr
Dec 24, 1:03 AM EST	Dense Fog Advisory	CLE	Crawford, Erie	10 hr
Dec 25, 3:20 PM EST	Dense Fog Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	21 hr
Dec 26, 3:41 AM EST	Dense Fog Advisory	CTP	Lancaster, Lebanon, Schuylkill, York	8 hr
Dec 26, 3:54 AM EST	Dense Fog Advisory	BGM	Pike, Wayne	8 hr
Dec 27, 11:38 AM EST	Flood Watch	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	22 hr
Dec 27, 1:49 PM EST	Dense Fog Advisory	CLE	Crawford, Erie	19 hr
Dec 27, 9:12 PM EST	Areal Flood Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	8 hr
Dec 27, 9:31 PM EST	Areal Flood Advisory	CTP	Lancaster, York	3 hr
Dec 27, 11:06 PM EST	River Flood Warning	PHI	Chester	9 hr
Dec 27, 11:14 PM EST	Areal Flood Warning	PHI	Montgomery	10 hr
Dec 27, 11:29 PM EST	Areal Flood Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	8 hr
Dec 27, 11:42 PM EST	Areal Flood Warning	PHI	Chester	13 hr
Dec 28, 12:12 AM EST	River Flood Warning	PHI	Montgomery	12 hr
Dec 28, 12:31 AM EST	Areal Flood Warning	PHI	Bucks	3 hr
Dec 28, 12:53 AM EST	River Flood Warning	PHI	Delaware	3 hr
Dec 28, 1:02 AM EST	Areal Flood Warning	PHI	Chester	5 hr
Dec 28, 1:08 AM EST	Areal Flood Warning	PHI	Delaware	5 hr
Dec 28, 1:12 AM EST	Areal Flood Warning	PHI	Berks	8 hr
Dec 28, 1:42 AM EST	Areal Flood Warning	PHI	Lehigh	6 hr
Dec 28, 2:03 AM EST	River Flood Warning	PHI	Chester, Delaware	15 hr
Dec 28, 2:33 AM EST	Coastal Flood Advisory	PHI	Bucks, Delaware, Montgomery, Philadelphia	39 hr
Dec 28, 2:34 AM EST	Areal Flood Warning	PHI	Montgomery	9 hr
Dec 28, 2:42 AM EST	Areal Flood Warning	PHI	Montgomery, Philadelphia	3 hr
Dec 28, 2:48 AM EST	Areal Flood Warning	PHI	Lehigh	10 hr
Dec 28, 2:57 AM EST	Areal Flood Warning	PHI	Bucks	8 hr
Dec 28, 3:07 AM EST	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	14 hr
Dec 28, 3:28 AM EST	River Flood Warning	PHI	Bucks	9 hr
Dec 28, 7:30 AM EST	River Flood Warning	PHI	Montgomery, Philadelphia	6 hr
Dec 28, 9:20 PM EST	Coastal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	20 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	1
Mesoscale Discussion	1
Special Weather Statement	23
Flooding
Areal Flood Warning	34
Flash Flood Warning	15
River Flood Warning	38
Flood Watch	7
Areal Flood Advisory	17
Winter
Winter Storm Warning	3
Winter Storm Watch	4
Winter Weather Advisory	7
Fog and smoke
Dense Fog Advisory	12
Coast and beach
Coastal Flood Warning	1
Coastal Flood Advisory	3

By county

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

25 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2022 2024

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.