Alert archive / Pennsylvania / Mesoscale Discussions
Mesoscale Discussions in Pennsylvania, 2014
117 mesoscale discussions in 2014. 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 2014. Tap one for its archive.
- Mesoscale Discussions
- 117
- Busiest month
- July39 mesoscale discussions
- Busiest day
- July 3, 20145 mesoscale discussions
Over time
By month
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 5, 12:07 PM EST | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Carbon, Centre and 28 more | 6 hr |
| Jan 21, 5:04 AM EST | Mesoscale Discussion | SPC | Bedford, Fayette, Franklin, Fulton, Somerset | 6 hr |
| Jan 21, 11:03 AM EST | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Chester, Delaware, Lancaster and 6 more | 6 hr |
| Jan 21, 4:28 PM EST | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Dauphin and 10 more | 6 hr |
| Feb 2, 11:21 PM EST | Mesoscale Discussion | SPC | Bedford, Fayette, Franklin, Fulton, Greene, Somerset | 5 hr |
| Feb 3, 4:44 AM EST | Mesoscale Discussion | SPC | Bedford, Berks, Blair, Cambria, Carbon, Centre and 24 more | 4 hr |
| Feb 3, 10:58 AM EST | Mesoscale Discussion | SPC | Bucks, Montgomery | 3 hr |
| Feb 4, 8:12 PM EST | Mesoscale Discussion | SPC | Armstrong, Beaver, Butler, Cameron, Clarion, Crawford and 10 more | 6 hr |
| Feb 4, 9:45 PM EST | Mesoscale Discussion | SPC | Adams, Bedford, Chester, Cumberland, Fayette, Franklin and 5 more | 6 hr |
| Feb 5, 12:44 AM EST | Mesoscale Discussion | SPC | Bucks, Delaware, Montgomery, Philadelphia | 5 hr |
| Feb 5, 12:57 AM EST | Mesoscale Discussion | SPC | Bradford, Cameron, Carbon, Centre, Clearfield, Clinton and 20 more | 5 hr |
| Feb 13, 12:17 AM EST | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Montgomery and 2 more | 5 hr |
| Feb 13, 8:00 AM EST | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Delaware and 12 more | 5 hr |
| Feb 13, 9:07 PM EST | Mesoscale Discussion | SPC | Carbon, Lackawanna, Monroe, Northampton, Pike, Wayne | 6 hr |
| Feb 19, 5:57 AM EST | Mesoscale Discussion | SPC | Adams, Berks, Blair, Bradford, Carbon, Centre and 26 more | 3 hr |
| Feb 21, 12:16 PM EST | Mesoscale Discussion | SPC | Chester, Delaware, Philadelphia | 89 min |
| Feb 21, 2:07 PM EST | Mesoscale Discussion | SPC | Philadelphia | 53 min |
| Mar 12, 8:31 AM EDT | Mesoscale Discussion | SPC | Erie | 4 hr |
| Mar 12, 11:43 AM EDT | Mesoscale Discussion | SPC | Bedford, Fayette, Greene, Somerset | 3 hr |
| Apr 4, 5:54 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 96 min |
| Apr 14, 3:29 PM EDT | Mesoscale Discussion | SPC | Bradford, Crawford, McKean, Potter, Tioga, Warren | 3 hr |
| Apr 22, 7:07 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Lehigh and 4 more | 113 min |
| Apr 26, 3:59 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 10 more | 2 hr |
| Apr 30, 5:01 PM EDT | Mesoscale Discussion | SPC | Greene, Washington | 89 min |
| May 9, 5:50 PM EDT | Mesoscale Discussion | SPC | Cameron, Elk, McKean, Potter, Tioga | 85 min |
| May 10, 2:23 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 9 more | 2 hr |
| May 14, 1:48 PM EDT | Mesoscale Discussion | SPC | Armstrong, Cambria, Clarion, Clearfield, Elk, Fayette and 4 more | 117 min |
| May 14, 5:50 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 14 more | 85 min |
| May 14, 9:33 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Clarion, Crawford, Erie and 6 more | 87 min |
| May 15, 5:33 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Centre, Clinton, Columbia and 19 more | 117 min |
| May 22, 11:49 AM EDT | Mesoscale Discussion | SPC | Armstrong, Berks, Blair, Bradford, Cambria, Cameron and 35 more | 2 hr |
| May 22, 1:19 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 26 more | 116 min |
| May 27, 1:43 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Bedford, Berks, Blair and 45 more | 62 min |
| May 27, 6:39 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 36 min |
| May 28, 2:28 PM EDT | Mesoscale Discussion | SPC | Greene | 3 hr |
| Jun 3, 12:10 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 13 more | 3 hr |
| Jun 3, 4:34 PM EDT | Mesoscale Discussion | SPC | Armstrong, Blair, Bradford, Cambria, Centre, Clearfield and 21 more | 116 min |
| Jun 8, 11:37 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 16 more | 53 min |
| Jun 8, 1:20 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more | 2 hr |
| Jun 8, 4:51 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Clarion and 11 more | 114 min |
| Jun 9, 3:03 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 8 more | 2 hr |
| Jun 11, 12:25 PM EDT | Mesoscale Discussion | SPC | Greene | 2 hr |
| Jun 11, 1:32 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Bedford, Butler, Fayette and 5 more | 118 min |
| Jun 11, 4:49 PM EDT | Mesoscale Discussion | SPC | McKean, Potter | 86 min |
| Jun 11, 8:07 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Cameron, Centre, Clearfield, Clinton and 4 more | 83 min |
| Jun 16, 2:01 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Greene, Lawrence, Mercer and 2 more | 119 min |
| Jun 17, 1:38 PM EDT | Mesoscale Discussion | SPC | McKean, Potter, Tioga, Warren | 97 min |
| Jun 17, 6:26 PM EDT | Mesoscale Discussion | SPC | Crawford, Erie, McKean, Warren | 64 min |
| Jun 17, 9:08 PM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, McKean, Potter, Tioga, Warren | 97 min |
| Jun 18, 6:30 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Jefferson and 4 more | 60 min |
| Jun 18, 9:06 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 32 more | 54 min |
| Jun 19, 12:18 AM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Chester, Cumberland, Dauphin and 16 more | 87 min |
| Jun 24, 2:18 PM EDT | Mesoscale Discussion | SPC | Beaver, Butler, Clarion, Crawford, Erie, Forest and 5 more | 57 min |
| Jun 25, 1:49 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bradford, Bucks and 44 more | 2 hr |
| Jun 25, 5:44 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 18 more | 3 hr |
| Jul 1, 11:45 AM EDT | Mesoscale Discussion | SPC | Crawford, McKean, Potter, Tioga, Warren | 90 min |
| Jul 1, 3:22 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford and 39 more | 53 min |
| Jul 2, 12:47 AM EDT | Mesoscale Discussion | SPC | Cameron, Elk, Forest, McKean, Potter, Warren | 58 min |
| Jul 2, 10:28 AM EDT | Mesoscale Discussion | SPC | Adams, Berks, Blair, Bradford, Bucks, Cameron and 35 more | 62 min |
| Jul 2, 12:45 PM EDT | Mesoscale Discussion | SPC | Bucks, Delaware, Montgomery, Philadelphia | 60 min |
| Jul 2, 4:27 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 27 more | 93 min |
| Jul 3, 11:57 AM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bradford, Carbon and 32 more | 63 min |
| Jul 3, 1:30 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 3 hr |
| Jul 3, 3:41 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Carbon, Columbia, Cumberland and 21 more | 64 min |
| Jul 3, 4:55 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Lehigh, Montgomery, Northampton and 1 more | 2 hr |
| Jul 3, 7:59 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Lehigh, Monroe, Montgomery and 3 more | 2 hr |
| Jul 7, 1:18 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Lawrence | 87 min |
| Jul 7, 2:10 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 27 more | 65 min |
| Jul 7, 4:44 PM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Carbon, Centre, Clearfield, Clinton and 23 more | 91 min |
| Jul 8, 8:58 AM EDT | Mesoscale Discussion | SPC | Mercer | 62 min |
| Jul 8, 11:29 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 37 more | 91 min |
| Jul 8, 4:00 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Bedford, Blair, Bradford, Butler and 35 more | 90 min |
| Jul 8, 4:42 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 15 more | 63 min |
| Jul 8, 7:44 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Columbia, Dauphin and 16 more | 61 min |
| Jul 9, 12:53 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Blair, Bradford, Butler, Cambria and 38 more | 3 hr |
| Jul 9, 3:23 PM EDT | Mesoscale Discussion | SPC | Chester, Delaware, Lancaster, York | 97 min |
| Jul 9, 7:59 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Lehigh, Montgomery, Northampton and 1 more | 91 min |
| Jul 13, 12:37 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 53 min |
| Jul 13, 3:10 PM EDT | Mesoscale Discussion | SPC | Bedford, Berks, Blair, Bradford, Cambria, Cameron and 34 more | 2 hr |
| Jul 13, 5:49 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bradford, Carbon and 30 more | 86 min |
| Jul 13, 6:18 PM EDT | Mesoscale Discussion | SPC | Allegheny, Fayette, Greene, Washington, Westmoreland | 87 min |
| Jul 13, 7:06 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Columbia, Cumberland and 20 more | 84 min |
| Jul 13, 8:46 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 8 more | 89 min |
| Jul 14, 1:06 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bucks, Carbon and 30 more | 84 min |
| Jul 14, 4:39 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Bucks, Carbon, Chester and 15 more | 96 min |
| Jul 14, 6:59 PM EDT | Mesoscale Discussion | SPC | Bucks, Delaware, Philadelphia | 61 min |
| Jul 15, 1:23 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 97 min |
| Jul 15, 4:41 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Dauphin and 10 more | 94 min |
| Jul 15, 7:04 PM EDT | Mesoscale Discussion | SPC | Delaware, Philadelphia | 56 min |
| Jul 23, 4:25 PM EDT | Mesoscale Discussion | SPC | Lackawanna, Susquehanna, Wayne | 2 hr |
| Jul 23, 6:16 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Lehigh, Monroe, Montgomery, Northampton and 1 more | 89 min |
| Jul 27, 6:09 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bradford, Cambria and 38 more | 66 min |
| Jul 27, 8:49 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 9 more | 86 min |
| Jul 27, 9:39 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bradford, Bucks and 41 more | 66 min |
| Aug 5, 3:01 PM EDT | Mesoscale Discussion | SPC | Bradford, Potter, Susquehanna, Tioga | 59 min |
| Aug 12, 12:26 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 13 more | 2 hr |
| Aug 21, 3:30 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 14 more | 2 hr |
| Aug 27, 3:41 PM EDT | Mesoscale Discussion | SPC | Berks, Carbon, Columbia, Cumberland, Dauphin, Huntingdon and 17 more | 3 hr |
| Aug 31, 1:30 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Dauphin and 11 more | 3 hr |
| Aug 31, 4:32 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 118 min |
| Sep 2, 2:25 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford and 40 more | 2 hr |
| Sep 2, 4:11 PM EDT | Mesoscale Discussion | SPC | Adams, Chester, Lancaster, York | 94 min |
| Sep 2, 6:29 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 10 more | 91 min |
| Sep 2, 7:43 PM EDT | Mesoscale Discussion | SPC | Lackawanna, Wayne | 92 min |
| Sep 6, 12:31 PM EDT | Mesoscale Discussion | SPC | Berks, Bradford, Bucks, Carbon, Columbia, Lackawanna and 16 more | 89 min |
| Sep 6, 4:20 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Delaware and 8 more | 85 min |
| Sep 6, 6:58 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 13 more | 92 min |
| Sep 10, 6:11 PM EDT | Mesoscale Discussion | SPC | Mercer | 64 min |
| Sep 21, 1:20 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 22 more | 115 min |
| Sep 30, 3:19 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Centre, Clinton, Cumberland, Franklin and 8 more | 86 min |
| Oct 15, 1:20 PM EDT | Mesoscale Discussion | SPC | Lancaster, York | 2 hr |
| Nov 22, 8:09 AM EST | Mesoscale Discussion | SPC | Beaver, Lawrence | 4 hr |
| Nov 24, 10:17 AM EST | Mesoscale Discussion | SPC | Beaver, Crawford, Erie, Lawrence, Mercer | 2 hr |
| Nov 26, 8:28 AM EST | Mesoscale Discussion | SPC | Bedford, Blair, Fulton, Huntingdon, Mifflin | 4 hr |
| Nov 26, 11:50 AM EST | Mesoscale Discussion | SPC | Adams, Berks, Carbon, Columbia, Cumberland, Dauphin and 18 more | 4 hr |
| Dec 5, 6:53 PM EST | Mesoscale Discussion | SPC | Carbon, Monroe, Pike | 4 hr |
| Dec 24, 7:48 PM EST | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 57 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Berks County43
- Lehigh County43
- Chester County40
- Monroe County40
- Northampton County40
- Carbon County39
- Montgomery County39
- Bucks County39
- Lancaster County38
- York County37
- Delaware County37
- Dauphin County36
- Lebanon County36
- Schuylkill County36
- Philadelphia County36
- Lackawanna County35
- Perry County34
- Pike County34
- Adams County33
- Luzerne County33
- Northumberland County33
- Snyder County33
- Columbia County32
- Cumberland County32
- Montour County32
- Union County32
- Juniata County31
- Franklin County30
- Mifflin County30
- Wayne County30
- Wyoming County29
- Huntingdon County28
- Susquehanna County28
- Centre County27
- Sullivan County27
- Bradford County27
- Bedford County26
- Blair County26
- Lycoming County26
- Elk County26
27 more counties
- McKean County26
- Fulton County25
- Greene County25
- Butler County25
- Potter County25
- Allegheny County25
- Beaver County24
- Cameron County24
- Lawrence County24
- Tioga County24
- Armstrong County23
- Jefferson County23
- Venango County23
- Clinton County23
- Somerset County22
- Clarion County22
- Mercer County22
- Clearfield County22
- Washington County22
- Indiana County22
- Westmoreland County21
- Forest County21
- Warren County21
- Fayette County20
- Cambria County19
- Crawford County19
- Erie County10
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20132015
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.