Alert archive / Pennsylvania / 2009
Weather alerts in Pennsylvania, August 2009
399 weather alerts in August 2009, 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 August 2009. Tap one for its archive.
- Alerts
- 399
- Warnings
- 164
- Watches
- 25
- Advisories
- 83
- Busiest day
- August 10, 200946 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 |
|---|---|---|---|---|
| Aug 1, 4:05 AM EDT | Dense Fog Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 5 hr |
| Aug 1, 2:48 PM EDT | Special Weather Statement | CTP | Lancaster | 37 min |
| Aug 1, 3:40 PM EDT | Areal Flood Advisory | CTP | Lancaster | 3 hr |
| Aug 1, 4:01 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 1, 6:15 PM EDT | Areal Flood Advisory | CTP | Dauphin, Lancaster, York | 79 min |
| Aug 1, 11:33 PM EDT | Special Weather Statement | CTP | Adams | 27 min |
| Aug 2, 12:36 AM EDT | Areal Flood Advisory | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more | 3 hr |
| Aug 2, 2:14 AM EDT | Special Weather Statement | CTP | Lebanon, Schuylkill | 61 min |
| Aug 2, 2:19 AM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 13 hr |
| Aug 2, 2:29 AM EDT | Areal Flood Advisory | CTP | Columbia, Lycoming, Montour, Northumberland, Schuylkill, Snyder and 1 more | 3 hr |
| Aug 2, 3:28 AM EDT | Flash Flood Watch | BGM | Lackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming | 14 hr |
| Aug 2, 3:29 AM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Aug 2, 3:35 AM EDT | Special Weather Statement | CTP | Columbia, Montour | 55 min |
| Aug 2, 4:14 AM EDT | Special Weather Statement | CTP | Lancaster, York | 61 min |
| Aug 2, 5:08 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Columbia, Cumberland, Dauphin, Franklin and 15 more | 10 hr |
| Aug 2, 5:08 AM EDT | Special Weather Statement | CTP | Lancaster | 52 min |
| Aug 2, 5:27 AM EDT | Areal Flood Advisory | CTP | Adams, Lancaster, York | 3 hr |
| Aug 2, 5:54 AM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 2, 7:08 AM EDT | Special Weather Statement | CTP | Adams | 52 min |
| Aug 2, 7:30 AM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 60 min |
| Aug 2, 7:34 AM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Aug 2, 7:51 AM EDT | Areal Flood Warning | PHI | Chester | 4 hr |
| Aug 2, 8:18 AM EDT | Special Weather Statement | CTP | Lancaster | 27 min |
| Aug 2, 8:19 AM EDT | Areal Flood Advisory | CTP | Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 2 more | 3 hr |
| Aug 2, 8:29 AM EDT | Severe Thunderstorm Warning | CTP | Adams, Dauphin, Lancaster, Lebanon, York | 61 min |
| Aug 2, 9:04 AM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 4 hr |
| Aug 2, 9:06 AM EDT | Areal Flood Advisory | BGM | Lackawanna, Pike, Wayne | 3 hr |
| Aug 2, 9:06 AM EDT | Flash Flood Warning | PHI | Berks, Carbon, Chester, Lehigh, Monroe, Northampton | 4 hr |
| Aug 2, 9:36 AM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon, York | 3 hr |
| Aug 2, 9:53 AM EDT | Special Weather Statement | CTP | Lancaster | 37 min |
| Aug 2, 10:01 AM EDT | Mesoscale Discussion | SPC | Bucks, Delaware, Montgomery, Philadelphia | 119 min |
| Aug 2, 10:08 AM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 9 hr |
| Aug 2, 10:08 AM EDT | Severe Thunderstorm Warning | PHI | Chester | 67 min |
| Aug 2, 10:24 AM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 66 min |
| Aug 2, 10:53 AM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 67 min |
| Aug 2, 11:07 AM EDT | Flash Flood Warning | BGM | Wayne | 4 hr |
| Aug 2, 11:14 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 61 min |
| Aug 2, 11:25 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 65 min |
| Aug 2, 11:48 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 57 min |
| Aug 2, 11:51 AM EDT | Tornado Warning | PHI | Bucks | 24 min |
| Aug 2, 12:33 PM EDT | River Flood Warning | PHI | Bucks | 28 hr |
| Aug 2, 1:25 PM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 6 hr |
| Aug 2, 4:06 PM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Aug 2, 4:21 PM EDT | River Flood Warning | PHI | Chester | 56 min |
| Aug 2, 4:22 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Aug 2, 6:15 PM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 4 hr |
| Aug 2, 6:25 PM EDT | Areal Flood Warning | PHI | Philadelphia | 4 hr |
| Aug 2, 6:38 PM EDT | Special Weather Statement | CTP | Franklin | 52 min |
| Aug 2, 7:22 PM EDT | Special Weather Statement | CTP | Cumberland, Franklin | 68 min |
| Aug 2, 7:49 PM EDT | Flash Flood Warning | CTP | Cumberland | 107 min |
| Aug 2, 8:11 PM EDT | Areal Flood Advisory | CTP | Adams, Franklin | 94 min |
| Aug 4, 5:31 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 44 min |
| Aug 4, 6:09 PM EDT | Mesoscale Discussion | SPC | Crawford, Erie, Forest, McKean, Warren | 66 min |
| Aug 8, 1:35 PM EDT | Excessive Heat Watch | PHI | Delaware, Philadelphia | 24 hr |
| Aug 9, 9:23 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware, Montgomery, Philadelphia | 83 min |
| Aug 9, 9:33 AM EDT | Areal Flood Warning | PHI | Philadelphia | 51 min |
| Aug 9, 11:36 AM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Centre, Clarion, Clearfield, Clinton and 10 more | 24 min |
| Aug 9, 11:57 AM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 11 hr |
| Aug 9, 11:57 AM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Clarion, Crawford, Elk, Erie and 8 more | 6 hr |
| Aug 9, 12:15 PM EDT | Special Weather Statement | CTP | Schuylkill | 60 min |
| Aug 9, 1:56 PM EDT | Excessive Heat Warning | PHI | Delaware, Philadelphia | 30 hr |
| Aug 9, 1:56 PM EDT | Heat Advisory | PHI | Berks, Lehigh, Northampton | 30 hr |
| Aug 9, 2:20 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter, Tioga | 70 min |
| Aug 9, 2:26 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 79 min |
| Aug 9, 2:36 PM EDT | Special Weather Statement | CTP | Cameron | 24 min |
| Aug 9, 2:45 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Blair, Bradford, Bucks, Cameron and 42 more | 60 min |
| Aug 9, 3:01 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming, Potter, Tioga | 59 min |
| Aug 9, 3:09 PM EDT | Heat Advisory | CTP | Adams, Columbia, Cumberland, Dauphin, Franklin, Lancaster and 9 more | 28 hr |
| Aug 9, 3:18 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bucks, Cambria and 36 more | 5 hr |
| Aug 9, 3:28 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 46 min |
| Aug 9, 3:28 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, Elk, McKean, Potter | 62 min |
| Aug 9, 3:47 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Columbia, Lycoming, Montour, Northumberland and 4 more | 43 min |
| Aug 9, 4:05 PM EDT | Areal Flood Advisory | CTP | Clinton, Lycoming, Potter, Sullivan, Tioga | 3 hr |
| Aug 9, 4:10 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Luzerne, Wyoming | 53 min |
| Aug 9, 4:10 PM EDT | Tornado Warning | CTP | Elk | 50 min |
| Aug 9, 4:11 PM EDT | Flash Flood Warning | CTP | McKean, Potter | 3 hr |
| Aug 9, 4:25 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Dauphin, Juniata, Lebanon, Montour, Northumberland and 4 more | 65 min |
| Aug 9, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 90 min |
| Aug 9, 4:41 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 64 min |
| Aug 9, 4:56 PM EDT | Tornado Warning | CTP | Clearfield, Elk | 34 min |
| Aug 9, 5:11 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry, York | 49 min |
| Aug 9, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 76 min |
| Aug 9, 5:19 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 56 min |
| Aug 9, 5:28 PM EDT | Tornado Warning | CTP | Clearfield | 32 min |
| Aug 9, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 82 min |
| Aug 9, 5:58 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 32 min |
| Aug 9, 5:59 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 46 min |
| Aug 9, 6:03 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 117 min |
| Aug 9, 6:06 PM EDT | Areal Flood Advisory | CTP | Clearfield | 114 min |
| Aug 9, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 80 min |
| Aug 9, 7:11 PM EDT | Mesoscale Discussion | SPC | Berks, Bradford, Bucks, Cameron, Carbon, Centre and 37 more | 2 hr |
| Aug 9, 10:44 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Clinton, Columbia, Elk, Lycoming and 11 more | 4 hr |
| Aug 9, 10:47 PM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Centre, Clarion, Clearfield, Clinton and 20 more | 118 min |
| Aug 9, 11:24 PM EDT | Special Weather Statement | CTP | McKean, Potter, Warren | 51 min |
| Aug 10, 12:09 AM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter, Tioga, Warren | 81 min |
| Aug 10, 12:52 AM EDT | Areal Flood Advisory | CTP | McKean, Potter, Tioga, Warren | 3 hr |
| Aug 10, 6:28 AM EDT | Areal Flood Advisory | CLE | Erie | 3 hr |
| Aug 10, 6:55 AM EDT | Special Weather Statement | CTP | Warren | 35 min |
| Aug 10, 7:50 AM EDT | Flash Flood Warning | CTP | McKean, Warren | 4 hr |
| Aug 10, 11:43 AM EDT | Flash Flood Warning | CTP | Warren | 3 hr |
| Aug 10, 2:26 PM EDT | Mesoscale Discussion | SPC | Clarion, Crawford, Elk, Erie, Forest, McKean and 4 more | 2 hr |
| Aug 10, 2:32 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Aug 10, 2:38 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 67 min |
| Aug 10, 3:12 PM EDT | Flash Flood Warning | CTP | Warren | 3 hr |
| Aug 10, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Bradford, Butler, Cameron, Clarion and 13 more | 8 hr |
| Aug 10, 3:19 PM EDT | Special Weather Statement | CTP | Warren | 26 min |
| Aug 10, 3:37 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 53 min |
| Aug 10, 3:42 PM EDT | Special Weather Statement | CTP | McKean | 48 min |
| Aug 10, 3:46 PM EDT | Special Weather Statement | CTP | Somerset | 29 min |
| Aug 10, 4:01 PM EDT | Areal Flood Advisory | CLE | Crawford | 6 hr |
| Aug 10, 4:11 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 64 min |
| Aug 10, 4:24 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 66 min |
| Aug 10, 4:27 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 63 min |
| Aug 10, 4:32 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Aug 10, 4:40 PM EDT | Mesoscale Discussion | SPC | Carbon, Lackawanna, Luzerne, Monroe, Northampton, Pike and 2 more | 2 hr |
| Aug 10, 4:43 PM EDT | Tornado Warning | CLE | Crawford | 47 min |
| Aug 10, 4:47 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 58 min |
| Aug 10, 4:53 PM EDT | Special Weather Statement | CTP | Potter | 37 min |
| Aug 10, 4:53 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 37 min |
| Aug 10, 4:58 PM EDT | Special Weather Statement | CTP | Cambria | 32 min |
| Aug 10, 5:02 PM EDT | Special Weather Statement | CTP | Elk | 28 min |
| Aug 10, 5:09 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Beaver, Bedford, Berks, Blair and 38 more | 5 hr |
| Aug 10, 5:17 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Forest, Venango | 43 min |
| Aug 10, 5:23 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 52 min |
| Aug 10, 5:31 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 44 min |
| Aug 10, 5:31 PM EDT | Special Weather Statement | CTP | Cambria | 59 min |
| Aug 10, 6:01 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Huntingdon | 44 min |
| Aug 10, 6:02 PM EDT | Areal Flood Advisory | BGM | Lackawanna | 3 hr |
| Aug 10, 6:12 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 63 min |
| Aug 10, 6:24 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 66 min |
| Aug 10, 6:39 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 66 min |
| Aug 10, 6:54 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Pike, Wayne | 66 min |
| Aug 10, 6:57 PM EDT | Areal Flood Advisory | BGM | Susquehanna, Wayne | 100 min |
| Aug 10, 7:11 PM EDT | Special Weather Statement | CTP | Cambria | 34 min |
| Aug 10, 7:28 PM EDT | Areal Flood Advisory | PBZ | Allegheny | 3 hr |
| Aug 10, 7:30 PM EDT | Special Weather Statement | CTP | Schuylkill | 30 min |
| Aug 10, 7:52 PM EDT | Areal Flood Advisory | PBZ | Indiana | 3 hr |
| Aug 10, 8:15 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bradford, Cambria and 35 more | 2 hr |
| Aug 11, 12:39 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 14 more | 2 hr |
| Aug 11, 12:42 PM EDT | Areal Flood Advisory | CTP | McKean, Warren | 3 hr |
| Aug 11, 1:39 PM EDT | Areal Flood Advisory | PBZ | Mercer | 3 hr |
| Aug 11, 3:08 PM EDT | Flash Flood Warning | CTP | McKean, Warren | 3 hr |
| Aug 11, 3:10 PM EDT | Special Weather Statement | CTP | Warren | 35 min |
| Aug 11, 3:28 PM EDT | Special Weather Statement | CTP | Clearfield | 62 min |
| Aug 11, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 43 min |
| Aug 11, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 34 min |
| Aug 11, 4:21 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 54 min |
| Aug 11, 4:27 PM EDT | Special Weather Statement | CTP | Clearfield | 33 min |
| Aug 11, 4:40 PM EDT | Areal Flood Advisory | CTP | Adams, York | 110 min |
| Aug 11, 4:56 PM EDT | Special Weather Statement | CTP | York | 34 min |
| Aug 11, 5:01 PM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Aug 11, 5:05 PM EDT | Areal Flood Advisory | CTP | Columbia, Lycoming, McKean, Potter, Sullivan, Tioga | 3 hr |
| Aug 11, 5:08 PM EDT | Special Weather Statement | CTP | Cambria | 37 min |
| Aug 11, 5:11 PM EDT | Special Weather Statement | CTP | Sullivan | 64 min |
| Aug 11, 5:26 PM EDT | Special Weather Statement | CTP | York | 34 min |
| Aug 11, 6:37 PM EDT | Special Weather Statement | CTP | Union | 53 min |
| Aug 11, 6:46 PM EDT | Special Weather Statement | CTP | Bedford | 29 min |
| Aug 11, 7:28 PM EDT | Special Weather Statement | CTP | Schuylkill | 32 min |
| Aug 11, 7:49 PM EDT | Special Weather Statement | CTP | Schuylkill | 41 min |
| Aug 11, 9:22 PM EDT | Special Weather Statement | CTP | Schuylkill | 23 min |
| Aug 11, 9:53 PM EDT | Special Weather Statement | CTP | Dauphin | 22 min |
| Aug 11, 10:16 PM EDT | Special Weather Statement | CTP | Dauphin, Lebanon | 29 min |
| Aug 11, 11:07 PM EDT | Special Weather Statement | CTP | Lancaster | 38 min |
| Aug 12, 12:37 AM EDT | Special Weather Statement | CTP | Lancaster | 23 min |
| Aug 12, 12:36 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Centre, Clearfield, Clinton and 16 more | 84 min |
| Aug 12, 1:01 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 89 min |
| Aug 12, 1:07 PM EDT | Special Weather Statement | CTP | Potter | 38 min |
| Aug 12, 1:16 PM EDT | Special Weather Statement | CTP | Somerset | 44 min |
| Aug 12, 1:42 PM EDT | Special Weather Statement | CTP | Potter | 33 min |
| Aug 12, 2:22 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Aug 12, 3:17 PM EDT | Areal Flood Advisory | PBZ | Armstrong, Indiana | 3 hr |
| Aug 12, 3:53 PM EDT | Special Weather Statement | CTP | Clinton | 37 min |
| Aug 12, 4:31 PM EDT | Special Weather Statement | CTP | Lycoming | 29 min |
| Aug 12, 4:59 PM EDT | Special Weather Statement | CTP | Lycoming | 31 min |
| Aug 12, 5:18 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 2 hr |
| Aug 12, 5:33 PM EDT | Areal Flood Advisory | CTP | Tioga | 87 min |
| Aug 12, 5:46 PM EDT | Special Weather Statement | CTP | Union | 29 min |
| Aug 12, 6:03 PM EDT | Areal Flood Advisory | PHI | Monroe | 4 hr |
| Aug 12, 6:14 PM EDT | Areal Flood Advisory | CTP | Centre, Clinton | 2 hr |
| Aug 12, 6:19 PM EDT | Special Weather Statement | CTP | Sullivan | 26 min |
| Aug 12, 6:20 PM EDT | Areal Flood Advisory | CTP | Warren | 115 min |
| Aug 12, 6:31 PM EDT | Areal Flood Advisory | CTP | Lycoming | 3 hr |
| Aug 12, 6:39 PM EDT | Areal Flood Advisory | CTP | Dauphin, Lebanon, Schuylkill | 3 hr |
| Aug 12, 6:50 PM EDT | Special Weather Statement | CTP | Huntingdon, Mifflin | 25 min |
| Aug 12, 6:52 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 3 hr |
| Aug 12, 7:22 PM EDT | Special Weather Statement | CTP | Columbia | 23 min |
| Aug 12, 7:35 PM EDT | Areal Flood Advisory | BGM | Lackawanna | 115 min |
| Aug 12, 7:43 PM EDT | Areal Flood Advisory | BGM | Luzerne | 2 hr |
| Aug 12, 7:47 PM EDT | Areal Flood Advisory | CTP | Dauphin, Lancaster, Lebanon, York | 3 hr |
| Aug 12, 8:54 PM EDT | Flash Flood Warning | PHI | Carbon | 4 hr |
| Aug 12, 8:56 PM EDT | Areal Flood Advisory | CTP | Adams, York | 3 hr |
| Aug 12, 9:29 PM EDT | Flash Flood Warning | CTP | Lebanon, Schuylkill | 4 hr |
| Aug 12, 10:33 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Northampton | 4 hr |
| Aug 12, 10:42 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Aug 12, 11:23 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 7 hr |
| Aug 12, 11:50 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 13, 1:28 AM EDT | Areal Flood Warning | CTP | Lebanon, Schuylkill | 6 hr |
| Aug 13, 1:40 AM EDT | Areal Flood Advisory | CTP | Lancaster | 3 hr |
| Aug 13, 2:58 AM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 13, 3:13 AM EDT | Dense Fog Advisory | CLE | Crawford, Erie | 7 hr |
| Aug 13, 3:17 AM EDT | Dense Fog Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more | 7 hr |
| Aug 13, 3:19 AM EDT | Flash Flood Watch | BGM | Lackawanna, Luzerne, Pike, Wayne | 12 hr |
| Aug 13, 3:36 AM EDT | Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 36 min |
| Aug 13, 4:12 AM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 15 hr |
| Aug 13, 4:15 AM EDT | Dense Fog Advisory | CTP | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 9 more | 5 hr |
| Aug 13, 4:33 AM EDT | Flash Flood Watch | CTP | Dauphin, Lancaster, Lebanon, Schuylkill, York | 15 hr |
| Aug 13, 6:01 AM EDT | River Flood Warning | PHI | Chester | 5 hr |
| Aug 13, 9:13 AM EDT | River Flood Warning | PHI | Chester, Delaware | 5 hr |
| Aug 13, 2:47 PM EDT | Special Weather Statement | CTP | Schuylkill | 28 min |
| Aug 13, 3:47 PM EDT | Special Weather Statement | CTP | Schuylkill | 58 min |
| Aug 13, 4:50 PM EDT | Areal Flood Advisory | CTP | Schuylkill | 115 min |
| Aug 14, 4:04 AM EDT | Dense Fog Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 6 hr |
| Aug 14, 2:37 PM EDT | Areal Flood Advisory | CTP | Sullivan | 3 hr |
| Aug 14, 2:37 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 113 min |
| Aug 14, 7:10 PM EDT | Special Weather Statement | CTP | Centre | 35 min |
| Aug 14, 8:00 PM EDT | Special Weather Statement | CTP | Lycoming | 45 min |
| Aug 15, 6:30 AM EDT | Dense Fog Advisory | CTP | Adams, Centre, Clinton, Columbia, Cumberland, Dauphin and 15 more | 4 hr |
| Aug 16, 5:05 PM EDT | Special Weather Statement | CTP | Perry | 25 min |
| Aug 16, 7:09 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Aug 16, 7:49 PM EDT | Special Weather Statement | CTP | Somerset | 26 min |
| Aug 18, 12:51 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 54 min |
| Aug 18, 1:46 PM EDT | Special Weather Statement | CTP | York | 44 min |
| Aug 18, 2:22 PM EDT | Special Weather Statement | CTP | Blair, Huntingdon | 38 min |
| Aug 18, 2:32 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford and 33 more | 88 min |
| Aug 18, 2:44 PM EDT | Special Weather Statement | CTP | Lancaster | 31 min |
| Aug 18, 3:09 PM EDT | Special Weather Statement | CTP | Franklin | 36 min |
| Aug 18, 3:39 PM EDT | Special Weather Statement | CTP | Centre | 66 min |
| Aug 18, 3:44 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 61 min |
| Aug 18, 3:52 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 53 min |
| Aug 18, 4:01 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Snyder | 59 min |
| Aug 18, 4:13 PM EDT | Special Weather Statement | CTP | Juniata, Mifflin, Perry | 32 min |
| Aug 18, 4:18 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, York | 57 min |
| Aug 18, 4:23 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry | 52 min |
| Aug 18, 4:26 PM EDT | Special Weather Statement | CTP | McKean | 79 min |
| Aug 18, 4:37 PM EDT | Special Weather Statement | CTP | Adams | 53 min |
| Aug 18, 4:44 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 46 min |
| Aug 18, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 56 min |
| Aug 18, 4:50 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Snyder, Union | 55 min |
| Aug 18, 4:54 PM EDT | Special Weather Statement | CTP | Adams | 36 min |
| Aug 18, 4:57 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lebanon, York | 78 min |
| Aug 18, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 55 min |
| Aug 18, 5:19 PM EDT | Special Weather Statement | CTP | Dauphin | 56 min |
| Aug 18, 5:25 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Sullivan | 80 min |
| Aug 18, 5:35 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Dauphin, Lebanon, Northumberland, Schuylkill | 70 min |
| Aug 18, 5:45 PM EDT | Special Weather Statement | CTP | Tioga | 30 min |
| Aug 18, 5:45 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 60 min |
| Aug 18, 5:46 PM EDT | Special Weather Statement | CTP | Tioga | 59 min |
| Aug 18, 5:54 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 51 min |
| Aug 18, 6:01 PM EDT | Areal Flood Advisory | CLE | Crawford | 3 hr |
| Aug 18, 6:02 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 88 min |
| Aug 18, 6:26 PM EDT | Special Weather Statement | CTP | Tioga | 34 min |
| Aug 18, 6:30 PM EDT | Special Weather Statement | CTP | Warren | 75 min |
| Aug 18, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 72 min |
| Aug 18, 7:22 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 53 min |
| Aug 18, 7:37 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 68 min |
| Aug 18, 8:35 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 70 min |
| Aug 19, 1:21 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Bedford, Berks, Blair, Bradford and 44 more | 84 min |
| Aug 19, 1:26 PM EDT | Areal Flood Advisory | BGM | Lackawanna, Luzerne, Wyoming | 3 hr |
| Aug 19, 1:35 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 63 min |
| Aug 19, 2:19 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 41 min |
| Aug 19, 2:52 PM EDT | Special Weather Statement | CTP | Sullivan | 53 min |
| Aug 19, 2:55 PM EDT | Flash Flood Watch | PBZ | Allegheny, Beaver, Washington | 4 hr |
| Aug 19, 3:19 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Sullivan | 56 min |
| Aug 19, 3:33 PM EDT | Areal Flood Advisory | BGM | Lackawanna, Luzerne, Wyoming | 3 hr |
| Aug 19, 3:36 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 54 min |
| Aug 19, 3:47 PM EDT | Areal Flood Advisory | CTP | Lycoming, Montour, Northumberland, Sullivan, Union | 3 hr |
| Aug 19, 4:11 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 49 min |
| Aug 19, 4:30 PM EDT | Areal Flood Advisory | PHI | Monroe | 2 hr |
| Aug 19, 4:34 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Schuylkill | 56 min |
| Aug 19, 4:35 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 55 min |
| Aug 19, 5:04 PM EDT | Flash Flood Warning | PHI | Monroe | 115 min |
| Aug 19, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 37 min |
| Aug 19, 5:21 PM EDT | Special Weather Statement | CTP | Perry | 24 min |
| Aug 19, 5:23 PM EDT | Special Weather Statement | CTP | Dauphin | 37 min |
| Aug 19, 5:33 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry, York | 57 min |
| Aug 19, 5:42 PM EDT | Special Weather Statement | CTP | Schuylkill | 33 min |
| Aug 19, 5:51 PM EDT | Areal Flood Advisory | PHI | Carbon | 114 min |
| Aug 19, 6:05 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 6 more | 55 min |
| Aug 19, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lancaster, Lebanon, York | 59 min |
| Aug 19, 6:49 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, Lebanon, York | 3 hr |
| Aug 19, 7:13 PM EDT | Flash Flood Warning | CTP | Cumberland | 3 hr |
| Aug 19, 7:43 PM EDT | Special Weather Statement | CTP | Lancaster | 32 min |
| Aug 19, 7:54 PM EDT | Areal Flood Advisory | PBZ | Fayette | 107 min |
| Aug 19, 8:13 PM EDT | Areal Flood Advisory | CTP | Lancaster, Lebanon, York | 3 hr |
| Aug 19, 10:12 PM EDT | Areal Flood Warning | CTP | Cumberland | 108 min |
| Aug 20, 1:43 PM EDT | Special Weather Statement | CTP | Dauphin | 62 min |
| Aug 20, 1:48 PM EDT | Special Weather Statement | CTP | Juniata, Perry | 57 min |
| Aug 20, 2:06 PM EDT | Special Weather Statement | CTP | Cambria | 69 min |
| Aug 20, 2:32 PM EDT | Areal Flood Advisory | CTP | Juniata, Perry | 118 min |
| Aug 20, 2:40 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Snyder | 50 min |
| Aug 20, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | Beaver, Crawford, Erie, Lawrence, Mercer | 7 hr |
| Aug 20, 3:04 PM EDT | Tornado Warning | CTP | Dauphin, Northumberland, Perry | 26 min |
| Aug 20, 3:10 PM EDT | Special Weather Statement | CTP | Lebanon | 50 min |
| Aug 20, 3:15 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Northumberland, Perry, Schuylkill | 60 min |
| Aug 20, 3:16 PM EDT | Special Weather Statement | CTP | Dauphin | 59 min |
| Aug 20, 3:20 PM EDT | Special Weather Statement | CTP | Lancaster | 25 min |
| Aug 20, 3:52 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 53 min |
| Aug 20, 4:22 PM EDT | Special Weather Statement | CTP | Lancaster | 53 min |
| Aug 20, 4:29 PM EDT | Tornado Warning | CTP | Lancaster | 31 min |
| Aug 20, 4:38 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 52 min |
| Aug 20, 4:57 PM EDT | Tornado Warning | CTP | Lancaster | 63 min |
| Aug 20, 5:15 PM EDT | Special Weather Statement | CTP | Mifflin | 60 min |
| Aug 20, 5:17 PM EDT | Special Weather Statement | CTP | Franklin | 58 min |
| Aug 20, 6:20 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 14 more | 55 min |
| Aug 20, 6:28 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest, Mercer, Venango | 62 min |
| Aug 20, 6:54 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Cambria, Cameron, Clarion, Clearfield, Elk and 9 more | 5 hr |
| Aug 20, 7:03 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 72 min |
| Aug 20, 7:31 PM EDT | Flash Flood Warning | CLE | Crawford, Erie | 93 min |
| Aug 20, 7:37 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 53 min |
| Aug 20, 7:44 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Lawrence | 61 min |
| Aug 20, 7:50 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer, Venango | 55 min |
| Aug 20, 7:57 PM EDT | Special Weather Statement | CTP | McKean | 33 min |
| Aug 20, 8:06 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Greene, Washington | 54 min |
| Aug 20, 8:18 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 57 min |
| Aug 20, 8:37 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 53 min |
| Aug 20, 9:27 PM EDT | Areal Flood Advisory | CTP | McKean, Warren | 3 hr |
| Aug 20, 9:36 PM EDT | Special Weather Statement | CTP | McKean | 54 min |
| Aug 20, 10:11 PM EDT | Special Weather Statement | CTP | Cameron, Elk, McKean | 64 min |
| Aug 20, 10:40 PM EDT | Mesoscale Discussion | SPC | Armstrong, Bedford, Blair, Cambria, Cameron, Centre and 14 more | 95 min |
| Aug 20, 11:25 PM EDT | Special Weather Statement | CTP | Cameron, Potter | 35 min |
| Aug 21, 12:18 AM EDT | Special Weather Statement | CTP | Potter, Tioga | 27 min |
| Aug 21, 10:01 AM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 8 more | 119 min |
| Aug 21, 10:16 AM EDT | Special Weather Statement | CTP | Cumberland, Franklin, Fulton | 119 min |
| Aug 21, 10:32 AM EDT | Tornado Warning | BGM | Lackawanna, Pike, Wayne | 28 min |
| Aug 21, 10:47 AM EDT | Severe Thunderstorm Watch | SPC | Lackawanna, Pike, Wayne | 7 hr |
| Aug 21, 11:13 AM EDT | Special Weather Statement | CTP | Adams, Cumberland, Northumberland, Perry, Snyder | 62 min |
| Aug 21, 11:28 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 11 more | 7 hr |
| Aug 21, 11:32 AM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Dauphin, Perry, York | 58 min |
| Aug 21, 11:49 AM EDT | Areal Flood Advisory | CTP | Elk, McKean | 21 min |
| Aug 21, 12:00 PM EDT | Flash Flood Warning | CTP | Elk, McKean | 3 hr |
| Aug 21, 12:06 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Dauphin, Lancaster, York | 54 min |
| Aug 21, 12:15 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Schuylkill | 75 min |
| Aug 21, 12:18 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 42 min |
| Aug 21, 12:20 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 55 min |
| Aug 21, 12:21 PM EDT | Areal Flood Advisory | CTP | Adams, Columbia, Cumberland, Dauphin, Lancaster, Lebanon and 6 more | 114 min |
| Aug 21, 12:28 PM EDT | Tornado Warning | BGM | Pike, Wayne | 62 min |
| Aug 21, 12:41 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon, York | 49 min |
| Aug 21, 12:47 PM EDT | Special Weather Statement | CTP | Columbia | 28 min |
| Aug 21, 12:48 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 57 min |
| Aug 21, 12:49 PM EDT | Tornado Warning | BGM | Pike, Wayne | 41 min |
| Aug 21, 12:50 PM EDT | Special Weather Statement | CTP | Cameron, Elk, Potter | 40 min |
| Aug 21, 12:55 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 35 min |
| Aug 21, 1:16 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 59 min |
| Aug 21, 1:17 PM EDT | Areal Flood Advisory | BGM | Lackawanna, Luzerne, Pike, Wayne | 3 hr |
| Aug 21, 1:27 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 63 min |
| Aug 21, 1:29 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 76 min |
| Aug 21, 1:40 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 35 min |
| Aug 21, 1:48 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 57 min |
| Aug 21, 1:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 68 min |
| Aug 21, 1:55 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 65 min |
| Aug 21, 1:58 PM EDT | Mesoscale Discussion | SPC | Bucks, Montgomery, Northampton, Philadelphia | 92 min |
| Aug 21, 2:01 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 44 min |
| Aug 21, 2:01 PM EDT | Special Weather Statement | CTP | York | 44 min |
| Aug 21, 2:17 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 2 hr |
| Aug 21, 2:23 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 21 min |
| Aug 21, 2:41 PM EDT | Areal Flood Advisory | PHI | Monroe, Northampton | 3 hr |
| Aug 21, 2:47 PM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 35 hr |
| Aug 21, 5:55 PM EDT | Mesoscale Discussion | SPC | Philadelphia | 80 min |
| Aug 21, 9:29 PM EDT | Special Weather Statement | CTP | Lancaster | 46 min |
| Aug 21, 9:59 PM EDT | Areal Flood Advisory | CTP | Lancaster, York | 3 hr |
| Aug 21, 10:14 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 21, 10:49 PM EDT | Flash Flood Warning | PHI | Chester | 55 min |
| Aug 22, 1:40 AM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Aug 22, 1:51 AM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 77 min |
| Aug 22, 3:28 AM EDT | Flash Flood Watch | BGM | Pike | 23 hr |
| Aug 22, 6:03 AM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 3 hr |
| Aug 22, 1:37 PM EDT | Flash Flood Watch | CTP | Lancaster, Lebanon, Schuylkill, York | 12 hr |
| Aug 22, 5:03 PM EDT | Areal Flood Advisory | BGM | Lackawanna | 117 min |
| Aug 22, 6:21 PM EDT | Flash Flood Warning | PHI | Bucks, Northampton | 3 hr |
| Aug 22, 7:00 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Aug 22, 7:42 PM EDT | Areal Flood Advisory | BGM | Pike | 2 hr |
| Aug 22, 8:09 PM EDT | Areal Flood Advisory | BGM | Pike, Wayne | 3 hr |
| Aug 22, 8:52 PM EDT | Areal Flood Advisory | CTP | Lancaster | 3 hr |
| Aug 22, 10:58 PM EDT | Areal Flood Advisory | PHI | Berks | 60 min |
| Aug 23, 1:29 PM EDT | Areal Flood Advisory | BGM | Luzerne, Wyoming | 2 hr |
| Aug 23, 5:15 PM EDT | Special Weather Statement | CTP | Tioga | 45 min |
| Aug 23, 5:39 PM EDT | Areal Flood Advisory | CTP | Tioga | 111 min |
| Aug 28, 5:51 AM EDT | Areal Flood Advisory | CTP | Adams | 4 hr |
| Aug 28, 6:20 AM EDT | Special Weather Statement | CTP | Clearfield | 40 min |
| Aug 28, 9:16 AM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Aug 28, 9:42 AM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 2 hr |
| Aug 28, 12:24 PM EDT | Mesoscale Discussion | SPC | Delaware | 2 hr |
| Aug 28, 2:27 PM EDT | Flash Flood Watch | BGM | Lackawanna, Luzerne, Pike, Wayne, Wyoming | 13 hr |
| Aug 28, 2:52 PM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 14 hr |
| Aug 28, 3:13 PM EDT | Areal Flood Advisory | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Aug 28, 4:52 PM EDT | Special Weather Statement | CTP | Adams, Cumberland | 23 min |
| Aug 28, 5:14 PM EDT | Special Weather Statement | CTP | Adams, Cumberland, Perry, York | 46 min |
| Aug 28, 6:33 PM EDT | Special Weather Statement | CTP | York | 57 min |
| Aug 28, 7:40 PM EDT | Areal Flood Advisory | CTP | Lancaster, York | 3 hr |
| Aug 28, 8:17 PM EDT | Flash Flood Watch | CTP | Lancaster, York | 7 hr |
| Aug 28, 9:28 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Montgomery | 3 hr |
| Aug 28, 10:13 PM EDT | Areal Flood Advisory | CTP | Adams, York | 3 hr |
| Aug 28, 11:23 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Aug 29, 4:42 PM EDT | Special Weather Statement | CTP | Montour | 33 min |
| Aug 29, 5:03 PM EDT | Special Weather Statement | CTP | Cumberland, Dauphin, Lebanon | 57 min |
| Aug 29, 5:13 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 32 min |
| Aug 29, 5:50 PM EDT | Special Weather Statement | CTP | Lebanon, Schuylkill | 55 min |
| Aug 29, 10:33 PM EDT | Areal Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 2 hr |
| Aug 30, 3:40 AM EDT | Coastal Flood Statement | CLE | Erie | 18 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 | 102 |
| Tornado Warning | 11 |
| Severe Thunderstorm Watch | 9 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 105 |
| Flooding | |
| Areal Flood Warning | 9 |
| Flash Flood Warning | 37 |
| River Flood Warning | 4 |
| Flash Flood Watch | 14 |
| Flood Watch | 1 |
| Areal Flood Advisory | 75 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Coast and beach | |
| Coastal Flood Statement | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lancaster County57
- York County55
- Dauphin County42
- McKean County41
- Schuylkill County40
- Lebanon County39
- Philadelphia County37
- Adams County34
- Potter County33
- Warren County33
- Montgomery County33
- Cumberland County32
- Berks County32
- Chester County32
- Perry County30
- Monroe County30
- Northampton County30
- Lycoming County29
- Delaware County29
- Columbia County28
- Carbon County28
- Tioga County26
- Bucks County26
- Elk County25
- Montour County25
- Northumberland County25
- Lehigh County25
- Pike County25
- Wayne County25
- Clearfield County24
- Clinton County24
- Lackawanna County24
- Sullivan County23
- Union County22
- Snyder County21
- Cameron County20
- Centre County20
- Juniata County20
- Crawford County20
- Luzerne County19
27 more counties
- Franklin County18
- Mifflin County18
- Erie County18
- Cambria County16
- Huntingdon County16
- Wyoming County16
- Forest County16
- Somerset County15
- Susquehanna County14
- Blair County13
- Fulton County13
- Bradford County13
- Clarion County13
- Venango County13
- Bedford County12
- Jefferson County12
- Mercer County12
- Armstrong County10
- Beaver County10
- Lawrence County10
- Allegheny County10
- Fayette County10
- Indiana County10
- Washington County10
- Butler County9
- Greene County8
- Westmoreland County7
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.