Weather alerts in Pennsylvania, January 2011

105 weather alerts in January 2011, 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 January 2011. Tap one for its archive.

Alerts: 105
Warnings: 15
Watches: 11
Advisories: 46
Busiest day: January 7, 201113 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
Jan 1, 4:57 PM EST	Areal Flood Advisory	CLE	Crawford, Erie	12 hr
Jan 2, 5:50 PM EST	Areal Flood Advisory	CLE	Crawford	42 hr
Jan 6, 1:31 PM EST	Winter Weather Advisory	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	25 hr
Jan 6, 2:36 PM EST	Winter Weather Advisory	CTP	Columbia, Lycoming, Montour, Northumberland, Potter, Schuylkill and 2 more	22 hr
Jan 6, 2:50 PM EST	Winter Weather Advisory	PBZ	Forest, Mercer, Venango	20 hr
Jan 6, 3:14 PM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	24 hr
Jan 6, 3:31 PM EST	Winter Weather Advisory	CLE	Crawford, Erie	6 hr
Jan 6, 9:45 PM EST	Lake Effect Snow Warning	CLE	Crawford, Erie	13 hr
Jan 6, 9:45 PM EST	Lake Effect Snow Advisory	CLE	Erie	7 hr
Jan 6, 10:40 PM EST	Special Weather Statement	PBZ	Allegheny, Armstrong, Butler, Clarion, Indiana, Jefferson and 2 more	110 min
Jan 7, 3:30 AM EST	Lake Effect Snow Watch	CLE	Crawford, Erie	24 hr
Jan 7, 7:09 AM EST	Special Weather Statement	PBZ	Allegheny, Armstrong, Butler, Indiana, Westmoreland	51 min
Jan 7, 7:26 AM EST	Special Weather Statement	CTP	Blair	64 min
Jan 7, 7:38 AM EST	Special Weather Statement	CTP	Mifflin	52 min
Jan 7, 7:59 AM EST	Special Weather Statement	PBZ	Allegheny, Armstrong, Indiana	61 min
Jan 7, 8:02 AM EST	Special Weather Statement	CTP	Centre, Clearfield	28 min
Jan 7, 8:30 AM EST	Special Weather Statement	CTP	Centre, Clearfield, Mifflin	60 min
Jan 7, 2:33 PM EST	Winter Weather Advisory	CTP	Adams, Bedford, Blair, Cambria, Centre, Clearfield and 15 more	37 hr
Jan 7, 3:18 PM EST	Lake Effect Snow Warning	CLE	Crawford, Erie	44 hr
Jan 7, 3:34 PM EST	Winter Weather Advisory	PHI	Berks, Delaware, Lehigh, Philadelphia	27 hr
Jan 7, 8:18 PM EST	Winter Storm Warning	CTP	Somerset	14 hr
Jan 7, 8:54 PM EST	Winter Weather Advisory	PBZ	Armstrong, Butler, Clarion, Fayette, Forest, Jefferson and 4 more	39 hr
Jan 8, 3:58 AM EST	Lake Effect Snow Advisory	CTP	McKean, Warren	23 hr
Jan 8, 7:22 AM EST	Special Weather Statement	CTP	York	53 min
Jan 9, 2:36 PM EST	Winter Storm Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	25 hr
Jan 10, 4:01 AM EST	Winter Storm Watch	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	24 hr
Jan 10, 12:49 PM EST	Winter Storm Watch	BGM	Pike	15 hr
Jan 10, 2:48 PM EST	Winter Weather Advisory	CLE	Crawford, Erie	61 hr
Jan 10, 3:14 PM EST	Winter Weather Advisory	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	3 days
Jan 10, 3:19 PM EST	Winter Weather Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	3 days
Jan 10, 3:42 PM EST	Winter Storm Warning	PHI	Delaware, Philadelphia	37 hr
Jan 11, 3:34 AM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	32 hr
Jan 11, 4:24 AM EST	Winter Weather Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	26 hr
Jan 11, 8:00 PM EST	Mesoscale Discussion	SPC	Bucks, Philadelphia	5 hr
Jan 12, 2:19 AM EST	Special Weather Statement	CTP	Centre, Clearfield, Clinton, Snyder, Union	116 min
Jan 12, 9:17 AM EST	Winter Storm Warning	CTP	Somerset	25 hr
Jan 12, 11:11 AM EST	Lake Effect Snow Advisory	BGM	Bradford, Susquehanna	26 hr
Jan 12, 3:31 PM EST	Special Weather Statement	PBZ	Allegheny, Beaver, Fayette	119 min
Jan 13, 2:26 AM EST	Coastal Flood Statement	PHI	Delaware, Philadelphia	94 min
Jan 13, 9:45 AM EST	Coastal Flood Statement	PHI	Delaware, Philadelphia	27 min
Jan 15, 10:42 AM EST	Special Weather Statement	CTP	Cameron, Clearfield, Elk	48 min
Jan 15, 11:47 AM EST	Special Weather Statement	CTP	Centre, Clinton, Lycoming, Sullivan, Union	43 min
Jan 15, 10:50 PM EST	Special Weather Statement	CTP	Bedford, Blair, Cambria, Somerset	85 min
Jan 17, 4:11 AM EST	Winter Weather Advisory	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	32 hr
Jan 17, 4:15 AM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	47 hr
Jan 17, 6:03 AM EST	Winter Weather Advisory	CTP	Adams, Bedford, Blair, Cambria, Centre, Clinton and 20 more	33 hr
Jan 17, 2:20 PM EST	Winter Weather Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more	20 hr
Jan 17, 2:37 PM EST	Winter Storm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	25 hr
Jan 17, 3:14 PM EST	Freezing Rain Advisory	CLE	Crawford, Erie	20 hr
Jan 18, 12:29 AM EST	Mesoscale Discussion	SPC	Berks, Bucks, Carbon, Chester, Dauphin, Delaware and 8 more	6 hr
Jan 18, 3:33 AM EST	Mesoscale Discussion	SPC	Bradford, Carbon, Lackawanna, Luzerne, Monroe, Pike and 4 more	6 hr
Jan 18, 8:01 AM EST	Mesoscale Discussion	SPC	Berks, Bucks, Carbon, Lackawanna, Lehigh, Luzerne and 7 more	4 hr
Jan 18, 3:33 PM EST	Winter Weather Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	16 hr
Jan 18, 8:34 PM EST	Winter Weather Advisory	CTP	Adams, Bedford, Blair, Centre, Clinton, Columbia and 19 more	11 hr
Jan 19, 3:56 AM EST	Freezing Rain Advisory	CLE	Crawford, Erie	8 hr
Jan 19, 7:02 AM EST	Freezing Rain Advisory	PBZ	Clarion, Forest, Jefferson, Lawrence, Mercer, Venango	3 hr
Jan 19, 2:40 PM EST	Winter Weather Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	37 hr
Jan 19, 2:54 PM EST	Winter Weather Advisory	CLE	Crawford, Erie	54 hr
Jan 20, 3:35 AM EST	Winter Weather Advisory	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	29 hr
Jan 20, 4:13 AM EST	Winter Weather Advisory	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	40 hr
Jan 20, 8:38 AM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	22 hr
Jan 21, 12:30 AM EST	Mesoscale Discussion	SPC	Carbon, Lehigh, Monroe, Northampton, Pike	5 hr
Jan 21, 3:23 AM EST	Winter Weather Advisory	PBZ	Clarion, Fayette, Forest, Jefferson, Mercer, Venango and 1 more	15 hr
Jan 21, 4:10 AM EST	Lake Effect Snow Advisory	CTP	McKean, Warren	16 hr
Jan 21, 9:27 AM EST	Special Weather Statement	CTP	Cameron, Clearfield, Potter, Tioga	48 min
Jan 21, 10:08 AM EST	Special Weather Statement	CTP	Centre, Clinton, Tioga	37 min
Jan 21, 1:24 PM EST	Special Weather Statement	PHI	Chester, Delaware, Philadelphia	36 min
Jan 21, 1:28 PM EST	Special Weather Statement	PHI	Carbon, Monroe, Northampton	62 min
Jan 21, 2:00 PM EST	Special Weather Statement	PHI	Philadelphia	60 min
Jan 21, 11:58 PM EST	River Flood Warning	PHI	Monroe	30 min
Jan 23, 1:21 PM EST	Wind Chill Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	9 hr
Jan 23, 2:40 PM EST	Wind Chill Advisory	CTP	Cameron, Clinton, Columbia, Elk, Lycoming, McKean and 5 more	20 hr
Jan 23, 3:37 PM EST	Wind Chill Advisory	PHI	Carbon, Monroe	16 hr
Jan 23, 10:07 PM EST	Wind Chill Advisory	BGM	Lackawanna, Luzerne, Pike, Wayne, Wyoming	5 hr
Jan 25, 4:06 AM EST	Winter Storm Watch	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	24 hr
Jan 25, 2:24 PM EST	Winter Storm Watch	CTP	Adams, Lancaster, York	13 hr
Jan 25, 2:24 PM EST	Winter Weather Advisory	CTP	Bedford, Blair, Cambria, Columbia, Cumberland, Dauphin and 13 more	33 hr
Jan 25, 2:54 PM EST	Winter Weather Advisory	BGM	Lackawanna, Luzerne, Pike, Wayne	33 hr
Jan 25, 8:58 PM EST	Winter Storm Warning	PBZ	Fayette, Westmoreland	24 hr
Jan 25, 8:58 PM EST	Winter Weather Advisory	PBZ	Fayette, Greene, Westmoreland	24 hr
Jan 26, 2:59 AM EST	Winter Storm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more	21 hr
Jan 26, 4:07 AM EST	Winter Storm Warning	PHI	Berks, Delaware, Lehigh, Northampton, Philadelphia	24 hr
Jan 26, 4:07 AM EST	Winter Weather Advisory	PHI	Carbon, Lehigh, Monroe, Northampton	23 hr
Jan 26, 7:30 AM EST	Mesoscale Discussion	SPC	Allegheny, Armstrong, Bedford, Blair, Cambria, Franklin and 7 more	5 hr
Jan 26, 11:12 AM EST	Mesoscale Discussion	SPC	Bucks, Montgomery	4 hr
Jan 26, 2:19 PM EST	Mesoscale Discussion	SPC	Adams, Berks, Bucks, Chester, Delaware, Lancaster and 3 more	6 hr
Jan 26, 4:55 PM EST	Special Weather Statement	CTP	Adams, Bedford, Blair, Centre, Clinton, Columbia and 15 more	80 min
Jan 26, 6:19 PM EST	Special Weather Statement	CTP	Adams, Cumberland, Dauphin, Perry, Snyder	86 min
Jan 26, 6:41 PM EST	Special Weather Statement	CTP	Lancaster, Lebanon, Schuylkill, York	64 min
Jan 27, 7:03 AM EST	Special Weather Statement	PBZ	Westmoreland	57 min
Jan 29, 10:45 AM EST	Winter Weather Advisory	CTP	Cameron, Clinton, Elk, Lycoming, McKean, Potter and 3 more	5 hr
Jan 30, 12:16 AM EST	Special Weather Statement	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 19 more	119 min
Jan 30, 3:14 PM EST	Winter Storm Watch	CLE	Crawford, Erie	25 hr
Jan 30, 3:30 PM EST	Winter Storm Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 7 more	19 hr
Jan 30, 7:18 PM EST	Winter Storm Watch	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	20 hr
Jan 30, 8:35 PM EST	Winter Storm Watch	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	42 hr
Jan 31, 4:41 AM EST	Winter Storm Watch	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	10 hr
Jan 31, 10:55 AM EST	Winter Storm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 7 more	41 hr
Jan 31, 10:55 AM EST	Winter Weather Advisory	PBZ	Greene	25 hr
Jan 31, 2:54 PM EST	Winter Storm Warning	CLE	Crawford, Erie	42 hr
Jan 31, 3:07 PM EST	Winter Storm Warning	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	42 hr
Jan 31, 3:07 PM EST	Winter Weather Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	25 hr
Jan 31, 3:07 PM EST	Winter Storm Warning	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	40 hr
Jan 31, 3:18 PM EST	Winter Storm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	24 hr
Jan 31, 3:18 PM EST	Winter Weather Advisory	PHI	Delaware, Philadelphia	24 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
Mesoscale Discussion	8
Special Weather Statement	23
Flooding
River Flood Warning	1
Areal Flood Advisory	2
Winter
Lake Effect Snow Warning	2
Winter Storm Warning	12
Lake Effect Snow Watch	1
Winter Storm Watch	10
Freezing Rain Advisory	3
Lake Effect Snow Advisory	4
Winter Weather Advisory	33
Cold
Wind Chill Advisory	4
Coast and beach
Coastal Flood Statement	2

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 2010 2012

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.