Alert archive / Pennsylvania / 2011
Weather alerts in Pennsylvania, November 2011
84 weather alerts in November 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 November 2011. Tap one for its archive.
- Alerts
- 84
- Warnings
- 30
- Watches
- 5
- Advisories
- 20
- Busiest day
- November 23, 201128 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 |
|---|---|---|---|---|
| Nov 9, 10:38 PM EST | Dense Fog Advisory | PHI | Delaware, Philadelphia | 12 hr |
| Nov 10, 9:35 AM EST | Dense Fog Advisory | CTP | Lancaster | 2 hr |
| Nov 10, 3:28 PM EST | Lake Effect Snow Advisory | CLE | Crawford, Erie | 19 hr |
| Nov 11, 1:58 AM EST | Special Weather Statement | PBZ | Mercer | 2 hr |
| Nov 11, 2:41 AM EST | Lake Effect Snow Advisory | CTP | Warren | 9 hr |
| Nov 11, 5:56 AM EST | Special Weather Statement | PBZ | Butler | 64 min |
| Nov 13, 3:42 AM EST | Wind Advisory | CLE | Crawford, Erie | 14 hr |
| Nov 14, 3:29 PM EST | Tornado Watch | SPC | Crawford, Erie, Lawrence, Mercer, Venango | 6 hr |
| Nov 14, 4:37 PM EST | Severe Thunderstorm Warning | CLE | Erie | 68 min |
| Nov 14, 4:38 PM EST | Mesoscale Discussion | SPC | Beaver, Butler, Crawford, Erie, Lawrence, Mercer and 1 more | 2 hr |
| Nov 14, 4:49 PM EST | Tornado Warning | CLE | Erie | 41 min |
| Nov 14, 5:10 PM EST | Areal Flood Advisory | CLE | Crawford, Erie | 6 hr |
| Nov 14, 6:03 PM EST | Mesoscale Discussion | SPC | Armstrong, Bradford, Cameron, Clarion, Clearfield, Clinton and 9 more | 117 min |
| Nov 14, 6:31 PM EST | Special Weather Statement | CTP | Warren | 29 min |
| Nov 14, 6:40 PM EST | Special Weather Statement | PBZ | Mercer, Venango | 50 min |
| Nov 14, 6:49 PM EST | Severe Thunderstorm Warning | CTP | McKean, Warren | 56 min |
| Nov 14, 7:27 PM EST | Special Weather Statement | PBZ | Forest, Mercer, Venango | 63 min |
| Nov 14, 7:33 PM EST | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 57 min |
| Nov 14, 7:35 PM EST | Severe Thunderstorm Warning | CTP | McKean, Potter, Tioga | 55 min |
| Nov 14, 7:44 PM EST | Severe Thunderstorm Warning | PBZ | Clarion, Forest, Mercer, Venango | 46 min |
| Nov 14, 7:49 PM EST | Severe Thunderstorm Warning | BGM | Bradford | 56 min |
| Nov 14, 8:04 PM EST | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer, Venango | 46 min |
| Nov 14, 8:08 PM EST | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 52 min |
| Nov 14, 8:24 PM EST | Special Weather Statement | CTP | Cameron, Elk | 66 min |
| Nov 14, 8:25 PM EST | Special Weather Statement | PBZ | Butler, Clarion, Jefferson | 65 min |
| Nov 14, 8:29 PM EST | Severe Thunderstorm Warning | CTP | Tioga | 31 min |
| Nov 14, 8:41 PM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Clearfield and 5 more | 2 hr |
| Nov 14, 8:44 PM EST | Special Weather Statement | CTP | Tioga | 46 min |
| Nov 14, 8:58 PM EST | Special Weather Statement | PBZ | Allegheny, Beaver | 47 min |
| Nov 14, 9:09 PM EST | Special Weather Statement | CTP | Clearfield, Clinton | 51 min |
| Nov 14, 9:10 PM EST | Special Weather Statement | PBZ | Armstrong, Jefferson | 65 min |
| Nov 14, 9:28 PM EST | Special Weather Statement | CTP | Sullivan | 62 min |
| Nov 14, 9:46 PM EST | Special Weather Statement | CTP | Centre | 44 min |
| Nov 14, 9:48 PM EST | Special Weather Statement | PBZ | Allegheny, Indiana, Westmoreland | 57 min |
| Nov 14, 10:00 PM EST | Special Weather Statement | CTP | Centre, Clinton, Lycoming | 45 min |
| Nov 14, 10:18 PM EST | Special Weather Statement | PBZ | Fayette, Greene, Washington | 57 min |
| Nov 14, 10:47 PM EST | Special Weather Statement | CTP | Columbia, Montour, Northumberland, Snyder, Union | 43 min |
| Nov 14, 11:10 PM EST | Special Weather Statement | PBZ | Fayette, Greene | 2 hr |
| Nov 18, 1:12 AM EST | Special Weather Statement | CTP | Clinton, Lycoming, Sullivan, Tioga | 93 min |
| Nov 21, 11:30 AM EST | River Flood Advisory | PBZ | Allegheny | 4 days |
| Nov 22, 11:05 AM EST | Flood Watch | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 13 hr |
| Nov 22, 2:45 PM EST | Coastal Flood Statement | PHI | Delaware, Philadelphia | 7 hr |
| Nov 22, 2:47 PM EST | Flash Flood Watch | CTP | Dauphin, Lancaster, Lebanon, Schuylkill | 13 hr |
| Nov 22, 2:48 PM EST | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 16 hr |
| Nov 22, 5:54 PM EST | Areal Flood Advisory | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 6 hr |
| Nov 22, 6:45 PM EST | Special Weather Statement | CTP | Potter, Tioga | 2 hr |
| Nov 22, 9:07 PM EST | Areal Flood Warning | PBZ | Fayette, Greene, Indiana, Westmoreland | 6 hr |
| Nov 22, 9:32 PM EST | Coastal Flood Advisory | PHI | Delaware, Philadelphia | 15 hr |
| Nov 22, 9:56 PM EST | Areal Flood Warning | PHI | Berks, Chester, Montgomery | 6 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Huntingdon | 25 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Perry | 15 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Cumberland | 46 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Cumberland, York | 33 hr |
| Nov 23, 12:04 AM EST | Areal Flood Advisory | CTP | Adams, Bedford, Blair, Cumberland, Dauphin, Franklin and 9 more | 6 hr |
| Nov 23, 12:35 AM EST | Areal Flood Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 6 hr |
| Nov 23, 1:17 AM EST | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 6 hr |
| Nov 23, 2:39 AM EST | River Flood Warning | PHI | Bucks | 9 hr |
| Nov 23, 2:56 AM EST | Areal Flood Warning | PBZ | Fayette, Greene | 6 hr |
| Nov 23, 3:00 AM EST | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 24 hr |
| Nov 23, 3:00 AM EST | River Flood Warning | CTP | Dauphin, Lebanon | 27 hr |
| Nov 23, 3:08 AM EST | Special Weather Statement | PHI | Bucks, Chester, Delaware, Monroe, Montgomery, Northampton and 1 more | 3 hr |
| Nov 23, 3:39 AM EST | River Flood Warning | PHI | Montgomery | 11 hr |
| Nov 23, 3:44 AM EST | Areal Flood Warning | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Monroe and 3 more | 8 hr |
| Nov 23, 5:13 AM EST | Areal Flood Advisory | PHI | Philadelphia | 3 hr |
| Nov 23, 5:54 AM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 16 hr |
| Nov 23, 6:03 AM EST | Areal Flood Advisory | CTP | Adams, Bedford, Blair, Cumberland, Dauphin, Franklin and 9 more | 117 min |
| Nov 23, 6:34 AM EST | River Flood Warning | PHI | Chester | 7 hr |
| Nov 23, 6:57 AM EST | River Flood Warning | PHI | Chester, Delaware | 16 hr |
| Nov 23, 7:27 AM EST | River Flood Warning | PBZ | Fayette, Washington, Westmoreland | 20 hr |
| Nov 23, 7:27 AM EST | River Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 20 hr |
| Nov 23, 7:37 AM EST | Areal Flood Warning | CTP | Lancaster | 3 hr |
| Nov 23, 9:45 AM EST | Special Weather Statement | PHI | Berks | 60 min |
| Nov 23, 10:26 AM EST | River Flood Warning | PHI | Montgomery, Philadelphia | 5 hr |
| Nov 23, 11:50 AM EST | Areal Flood Warning | PHI | Berks, Chester, Montgomery | 4 hr |
| Nov 24, 1:48 AM EST | Coastal Flood Advisory | PHI | Delaware, Philadelphia | 13 hr |
| Nov 25, 3:25 AM EST | Coastal Flood Statement | PHI | Delaware, Philadelphia | 12 hr |
| Nov 28, 5:41 AM EST | River Flood Advisory | PBZ | Allegheny | 16 hr |
| Nov 29, 12:02 PM EST | Areal Flood Advisory | CLE | Crawford, Erie | 4 hr |
| Nov 29, 12:48 PM EST | Special Weather Statement | PHI | Berks, Chester, Delaware | 57 min |
| Nov 29, 2:05 PM EST | Special Weather Statement | PHI | Berks, Bucks, Montgomery, Philadelphia | 55 min |
| Nov 29, 4:27 PM EST | Areal Flood Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 4 hr |
| Nov 29, 5:58 PM EST | Areal Flood Advisory | CTP | Schuylkill | 3 hr |
| Nov 29, 7:13 PM EST | Areal Flood Advisory | BGM | Luzerne, Wyoming | 3 hr |
| Nov 30, 10:00 AM EST | Flash Flood Watch | CTP | Lancaster | 27 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 | 9 |
| Tornado Warning | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Warning | 6 |
| River Flood Warning | 14 |
| Flash Flood Watch | 3 |
| Flood Watch | 1 |
| Areal Flood Advisory | 11 |
| River Flood Advisory | 2 |
| Winter | |
| Lake Effect Snow Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Coast and beach | |
| Coastal Flood Advisory | 2 |
| Coastal Flood Statement | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Philadelphia County14
- Delaware County12
- Chester County11
- Montgomery County11
- Berks County10
- Erie County8
- Mercer County8
- Allegheny County7
- Northampton County7
- Bucks County7
- Lancaster County6
- Crawford County6
- Lawrence County6
- Venango County6
- Tioga County6
- Westmoreland County6
- Fayette County6
- Lehigh County6
- Butler County5
- Beaver County5
- Washington County5
- Greene County5
- Dauphin County5
- Lebanon County5
- Schuylkill County5
- Monroe County5
- Warren County4
- Clarion County4
- Clinton County4
- Jefferson County4
- Cumberland County4
- Armstrong County3
- Clearfield County3
- Forest County3
- Lycoming County3
- McKean County3
- Potter County3
- Sullivan County3
- Indiana County3
- Carbon County3
21 more counties
- Huntingdon County3
- Perry County3
- York County3
- Bradford County2
- Cameron County2
- Elk County2
- Centre County2
- Adams County2
- Bedford County2
- Blair County2
- Franklin County2
- Fulton County2
- Juniata County2
- Mifflin County2
- Columbia County1
- Montour County1
- Northumberland County1
- Snyder County1
- Union County1
- Luzerne County1
- Wyoming County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.