Weather alerts in Pennsylvania, December 2017

107 weather alerts in December 2017, 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 2017. Tap one for its archive.

Alerts: 107
Warnings: 8
Watches: 4
Advisories: 39
Busiest day: December 30, 201721 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 6, 3:00 AM EST	Winter Storm Watch	CLE	Erie	31 hr
Dec 7, 9:58 AM EST	Winter Weather Advisory	CLE	Erie	17 hr
Dec 7, 4:14 PM EST	Special Weather Statement	CTP	Clearfield	61 min
Dec 7, 4:37 PM EST	Special Weather Statement	CLE	Erie	53 min
Dec 7, 5:13 PM EST	Special Weather Statement	CTP	Huntingdon, Mifflin, Snyder	62 min
Dec 7, 5:28 PM EST	Special Weather Statement	CLE	Erie	92 min
Dec 8, 3:04 AM EST	Winter Weather Advisory	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	45 hr
Dec 8, 7:59 PM EST	Winter Weather Advisory	CTP	Lancaster, York	24 hr
Dec 9, 1:52 PM EST	Winter Weather Advisory	CTP	Warren	25 hr
Dec 9, 2:10 PM EST	Winter Weather Advisory	CLE	Erie	38 hr
Dec 9, 6:15 PM EST	Special Weather Statement	BGM	Pike	75 min
Dec 10, 3:01 AM EST	Winter Storm Watch	PBZ	Clarion, Forest, Jefferson, Mercer, Venango	33 hr
Dec 10, 4:06 AM EST	Winter Storm Watch	CLE	Crawford, Erie	34 hr
Dec 10, 9:00 AM EST	Special Weather Statement	BGM	Susquehanna	45 min
Dec 10, 9:50 AM EST	Special Weather Statement	BGM	Susquehanna	40 min
Dec 11, 4:25 AM EST	Winter Weather Advisory	CTP	Cambria, Clearfield, Elk, McKean, Somerset	57 hr
Dec 11, 12:02 PM EST	Lake Effect Snow Warning	CTP	Warren	49 hr
Dec 11, 12:05 PM EST	Lake Effect Snow Warning	PBZ	Clarion, Forest, Venango	40 hr
Dec 11, 12:05 PM EST	Winter Weather Advisory	PBZ	Fayette, Jefferson, Mercer, Westmoreland	39 hr
Dec 11, 1:42 PM EST	Lake Effect Snow Warning	CLE	Crawford, Erie	49 hr
Dec 11, 1:42 PM EST	Winter Weather Advisory	CLE	Erie	65 hr
Dec 11, 3:14 PM EST	Winter Weather Advisory	BGM	Susquehanna, Wayne	51 hr
Dec 12, 6:30 AM EST	Special Weather Statement	PBZ	Allegheny, Beaver	60 min
Dec 12, 7:29 AM EST	Special Weather Statement	PBZ	Armstrong, Clarion, Indiana, Jefferson, Westmoreland	61 min
Dec 12, 8:18 AM EST	Special Weather Statement	CTP	Cameron, Elk, Potter	57 min
Dec 12, 4:15 PM EST	Special Weather Statement	PBZ	Allegheny, Beaver, Westmoreland	30 min
Dec 12, 5:01 PM EST	Special Weather Statement	PBZ	Allegheny, Beaver, Westmoreland	59 min
Dec 12, 6:14 PM EST	Special Weather Statement	PBZ	Westmoreland	61 min
Dec 13, 2:59 AM EST	Winter Weather Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	31 hr
Dec 13, 4:05 AM EST	Winter Weather Advisory	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 21 more	28 hr
Dec 13, 2:10 PM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	18 hr
Dec 13, 3:08 PM EST	Winter Storm Warning	CLE	Crawford, Erie	16 hr
Dec 13, 3:28 PM EST	Winter Weather Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	16 hr
Dec 13, 3:38 PM EST	Special Weather Statement	PBZ	Washington	52 min
Dec 15, 3:26 AM EST	Winter Weather Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	18 hr
Dec 15, 3:41 AM EST	Winter Weather Advisory	CLE	Crawford, Erie	36 hr
Dec 15, 1:27 PM EST	Winter Weather Advisory	CTP	McKean, Warren	27 hr
Dec 15, 2:56 PM EST	Lake Effect Snow Warning	CLE	Erie	25 hr
Dec 15, 5:42 PM EST	Mesoscale Discussion	SPC	Erie	4 hr
Dec 15, 6:02 PM EST	Special Weather Statement	PBZ	Clarion, Lawrence	58 min
Dec 15, 6:54 PM EST	Special Weather Statement	CTP	Warren	66 min
Dec 15, 8:12 PM EST	Special Weather Statement	CTP	Blair, Cambria, Clearfield, Somerset	33 min
Dec 15, 8:58 PM EST	Special Weather Statement	CTP	Blair, Cambria	47 min
Dec 15, 10:10 PM EST	Special Weather Statement	CTP	Huntingdon, Juniata, Mifflin, Perry	50 min
Dec 21, 2:37 AM EST	Winter Weather Advisory	CTP	Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 5 more	34 hr
Dec 21, 3:32 AM EST	Winter Weather Advisory	BGM	Bradford, Susquehanna, Wayne, Wyoming	64 hr
Dec 21, 11:58 AM EST	Winter Weather Advisory	PBZ	Clarion, Forest, Jefferson, Venango	17 hr
Dec 23, 2:04 PM EST	Winter Weather Advisory	PBZ	Clarion, Fayette, Forest, Jefferson, Mercer, Venango and 1 more	46 hr
Dec 23, 3:24 PM EST	Winter Weather Advisory	CLE	Crawford, Erie	48 hr
Dec 24, 3:18 AM EST	Wind Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	35 hr
Dec 24, 3:22 AM EST	Winter Weather Advisory	CTP	Cambria, Cameron, Centre, Clearfield, Clinton, Elk and 8 more	37 hr
Dec 24, 3:35 AM EST	Winter Weather Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	29 hr
Dec 24, 3:48 AM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	65 hr
Dec 24, 4:38 AM EST	Lake Effect Snow Warning	CLE	Crawford, Erie	3 days
Dec 24, 11:12 AM EST	Wind Advisory	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	29 hr
Dec 24, 3:16 PM EST	Wind Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	27 hr
Dec 24, 11:18 PM EST	Special Weather Statement	PBZ	Allegheny, Armstrong	27 min
Dec 25, 12:18 AM EST	Special Weather Statement	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Washington	57 min
Dec 25, 1:16 AM EST	Special Weather Statement	PBZ	Allegheny, Armstrong, Clarion, Indiana, Jefferson, Washington and 1 more	59 min
Dec 25, 2:11 AM EST	Special Weather Statement	CTP	Cambria, Clearfield	79 min
Dec 25, 2:49 AM EST	Special Weather Statement	CTP	Blair, Cameron, Centre, Clinton, Huntingdon, Mifflin	71 min
Dec 25, 3:23 AM EST	Mesoscale Discussion	SPC	Bradford, Centre, Clinton, Columbia, Cumberland, Dauphin and 15 more	3 hr
Dec 25, 3:40 AM EST	Special Weather Statement	PBZ	Allegheny, Beaver, Westmoreland	65 min
Dec 25, 4:20 AM EST	Special Weather Statement	CTP	Columbia, Montour, Northumberland, Union	55 min
Dec 25, 7:49 AM EST	Special Weather Statement	CTP	Juniata, Mifflin, Perry	71 min
Dec 25, 10:02 AM EST	Special Weather Statement	CLE	Erie	3 hr
Dec 25, 10:57 AM EST	Mesoscale Discussion	SPC	Crawford, Erie	4 hr
Dec 25, 1:42 PM EST	Winter Weather Advisory	CTP	McKean, Warren	48 hr
Dec 25, 8:01 PM EST	Mesoscale Discussion	SPC	Erie	4 hr
Dec 25, 8:27 PM EST	Special Weather Statement	CLE	Erie	108 min
Dec 25, 10:36 PM EST	Special Weather Statement	CLE	Erie	3 hr
Dec 26, 3:58 AM EST	Wind Chill Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	56 hr
Dec 26, 4:58 AM EST	Special Weather Statement	CLE	Erie	2 hr
Dec 26, 7:14 AM EST	Special Weather Statement	CLE	Erie	2 hr
Dec 26, 8:56 PM EST	Wind Chill Advisory	PHI	Carbon, Monroe	49 hr
Dec 26, 9:46 PM EST	Special Weather Statement	CLE	Erie	3 hr
Dec 27, 2:19 PM EST	Wind Chill Advisory	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 8 more	21 hr
Dec 28, 3:32 AM EST	Winter Storm Watch	CLE	Crawford, Erie	35 hr
Dec 28, 9:43 PM EST	Lake Effect Snow Warning	CLE	Erie	66 hr
Dec 29, 2:49 PM EST	Winter Weather Advisory	CLE	Crawford	36 hr
Dec 29, 2:59 PM EST	Winter Weather Advisory	CTP	Adams, Bedford, Cambria, Clearfield, Cumberland, Dauphin and 10 more	30 hr
Dec 29, 3:53 PM EST	Winter Weather Advisory	PBZ	Fayette, Greene, Westmoreland	29 hr
Dec 29, 5:25 PM EST	Special Weather Statement	CLE	Erie	2 hr
Dec 29, 11:52 PM EST	Winter Weather Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	14 hr
Dec 30, 3:14 AM EST	Wind Chill Advisory	PHI	Carbon, Monroe	56 hr
Dec 30, 3:23 AM EST	Wind Chill Advisory	BGM	Bradford, Susquehanna, Wayne	55 hr
Dec 30, 4:31 AM EST	Wind Chill Advisory	CTP	Cambria, Cameron, Clearfield, Elk, Lycoming, McKean and 5 more	4 days
Dec 30, 7:42 AM EST	Special Weather Statement	CLE	Erie	2 hr
Dec 30, 9:59 AM EST	Special Weather Statement	CLE	Erie	2 hr
Dec 30, 12:07 PM EST	Special Weather Statement	CLE	Crawford	53 min
Dec 30, 1:13 PM EST	Special Weather Statement	CLE	Crawford	62 min
Dec 30, 2:43 PM EST	Winter Storm Warning	PBZ	Fayette	6 hr
Dec 30, 3:45 PM EST	Special Weather Statement	PBZ	Armstrong, Butler, Lawrence	90 min
Dec 30, 3:48 PM EST	Special Weather Statement	CTP	Cameron, Elk, McKean, Potter	72 min
Dec 30, 4:16 PM EST	Special Weather Statement	PBZ	Allegheny, Beaver	89 min
Dec 30, 4:45 PM EST	Special Weather Statement	CTP	Cameron, Clearfield, Tioga	60 min
Dec 30, 4:50 PM EST	Special Weather Statement	PBZ	Fayette, Washington	85 min
Dec 30, 5:03 PM EST	Special Weather Statement	BGM	Bradford	27 min
Dec 30, 5:14 PM EST	Special Weather Statement	PBZ	Armstrong, Indiana	31 min
Dec 30, 5:31 PM EST	Special Weather Statement	BGM	Bradford	59 min
Dec 30, 5:39 PM EST	Special Weather Statement	PBZ	Allegheny, Washington	96 min
Dec 30, 5:44 PM EST	Special Weather Statement	CTP	Clinton, Lycoming, Sullivan	76 min
Dec 30, 5:50 PM EST	Special Weather Statement	CTP	Somerset	55 min
Dec 30, 6:29 PM EST	Special Weather Statement	BGM	Lackawanna, Luzerne	46 min
Dec 30, 7:15 PM EST	Special Weather Statement	BGM	Lackawanna	30 min
Dec 30, 7:24 PM EST	Special Weather Statement	PBZ	Allegheny, Beaver	96 min
Dec 30, 7:56 PM EST	Wind Chill Advisory	PBZ	Fayette, Westmoreland	4 days

By product

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

Product	Alerts
Severe storms
Mesoscale Discussion	4
Special Weather Statement	52
Winter
Lake Effect Snow Warning	6
Winter Storm Warning	2
Winter Storm Watch	4
Winter Weather Advisory	29
Cold
Wind Chill Advisory	7
Wind and dust
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 2016 2018

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.