Alert archive / Pennsylvania / Mesoscale Discussions / 2007
Mesoscale Discussions in Pennsylvania, December 2007
12 mesoscale discussions in December 2007. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in December 2007. Tap one for its archive.
- Mesoscale Discussions
- 12
- Busiest day
- December 13, 20073 mesoscale discussions
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, 7:54 PM EST | Mesoscale Discussion | SPC | Susquehanna, Wayne | 3 hr |
| Dec 3, 12:15 AM EST | Mesoscale Discussion | SPC | Pike, Wayne | 4 hr |
| Dec 8, 6:56 PM EST | Mesoscale Discussion | SPC | Butler, Clarion, Lawrence, Mercer | 5 hr |
| Dec 9, 2:51 PM EST | Mesoscale Discussion | SPC | Bradford, Cameron, Elk, Forest, Lackawanna, Lycoming and 8 more | 4 hr |
| Dec 9, 7:03 PM EST | Mesoscale Discussion | SPC | Bradford, Lackawanna, Luzerne, Lycoming, Pike, Potter and 5 more | 4 hr |
| Dec 13, 1:47 AM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 12 more | 5 hr |
| Dec 13, 7:57 AM EST | Mesoscale Discussion | SPC | Berks, Blair, Bradford, Cameron, Carbon, Centre and 32 more | 4 hr |
| Dec 13, 12:30 PM EST | Mesoscale Discussion | SPC | Berks, Blair, Bradford, Bucks, Cameron, Carbon and 33 more | 4 hr |
| Dec 15, 7:43 PM EST | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 43 more | 6 hr |
| Dec 16, 2:21 AM EST | Mesoscale Discussion | SPC | Bedford, Berks, Blair, Bradford, Cambria, Cameron and 34 more | 5 hr |
| Dec 23, 2:11 PM EST | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Bucks, Carbon, Centre and 34 more | 94 min |
| Dec 30, 10:09 PM EST | Mesoscale Discussion | SPC | Bradford, Columbia, Lackawanna, Luzerne, Monroe, Pike and 4 more | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Wayne County9
- Susquehanna County8
- Bradford County8
- Sullivan County8
- Wyoming County8
- Pike County7
- Lackawanna County7
- Lycoming County7
- Potter County7
- Tioga County7
- Luzerne County6
- Columbia County6
- Cameron County5
- Elk County5
- McKean County5
- Blair County5
- Centre County5
- Clinton County5
- Dauphin County5
- Huntingdon County5
- Juniata County5
- Lebanon County5
- Mifflin County5
- Monroe County5
- Montour County5
- Northumberland County5
- Perry County5
- Schuylkill County5
- Snyder County5
- Union County5
- Clarion County4
- Berks County4
- Carbon County4
- Clearfield County4
- Lehigh County4
- Northampton County4
- Cumberland County4
- Butler County3
- Lawrence County3
- Mercer County3
26 more counties
- Forest County3
- Bedford County3
- Cambria County3
- Fulton County3
- Jefferson County3
- Franklin County3
- Warren County2
- Allegheny County2
- Armstrong County2
- Beaver County2
- Fayette County2
- Indiana County2
- Somerset County2
- Venango County2
- Washington County2
- Westmoreland County2
- Bucks County2
- Montgomery County2
- Adams County2
- York County2
- Greene County1
- Crawford County1
- Chester County1
- Delaware County1
- Lancaster County1
- Philadelphia County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20062008
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.