Alert archive / Pennsylvania / Flash Flood Watches
Flash Flood Watches in Pennsylvania, 2018
49 flash flood watches in 2018. 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 flash flood watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Flash Flood Watches
- 49
- Busiest month
- July13 flash flood watches
- Busiest day
- May 15, 20183 flash flood watches
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 |
|---|---|---|---|---|
| Apr 3, 7:10 AM EDT | Flash Flood Watch | PBZ | Allegheny, Fayette, Greene, Washington, Westmoreland | 19 hr |
| Apr 14, 2:41 PM EDT | Flash Flood Watch | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 37 hr |
| Apr 15, 3:41 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 20 hr |
| Apr 15, 3:43 PM EDT | Flash Flood Watch | BGM | Lackawanna, Luzerne, Pike, Wayne | 22 hr |
| Apr 16, 1:44 AM EDT | Flash Flood Watch | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more | 10 hr |
| May 15, 2:42 AM EDT | Flash Flood Watch | PBZ | Allegheny, Fayette, Greene, Washington, Westmoreland | 20 hr |
| May 15, 3:40 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 21 hr |
| May 15, 3:47 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 5 more | 15 hr |
| May 26, 11:38 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 23 hr |
| May 27, 1:14 PM EDT | Flash Flood Watch | CTP | Adams, Bedford, Cumberland, Franklin, Fulton, Lancaster and 2 more | 7 hr |
| Jun 1, 10:40 PM EDT | Flash Flood Watch | CTP | Adams, Lancaster, York | 7 hr |
| Jun 2, 3:26 AM EDT | Flash Flood Watch | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 24 hr |
| Jun 2, 5:40 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Franklin, Fulton, Lancaster, Somerset and 1 more | 22 hr |
| Jun 9, 2:36 PM EDT | Flash Flood Watch | PBZ | Allegheny, Fayette, Washington, Westmoreland | 9 hr |
| Jun 10, 3:48 AM EDT | Flash Flood Watch | PHI | Chester, Delaware, Montgomery, Philadelphia | 28 hr |
| Jun 20, 10:00 AM EDT | Flash Flood Watch | CTP | Bedford, Franklin, Fulton, Somerset | 12 hr |
| Jun 20, 10:53 AM EDT | Flash Flood Watch | PBZ | Allegheny, Fayette, Greene, Washington, Westmoreland | 11 hr |
| Jul 4, 9:54 AM EDT | Flash Flood Watch | CTP | Blair, Cambria, Cameron, Centre, Clearfield, Clinton and 14 more | 10 hr |
| Jul 5, 4:10 AM EDT | Flash Flood Watch | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 19 hr |
| Jul 5, 4:17 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 30 hr |
| Jul 5, 2:59 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 20 hr |
| Jul 17, 3:36 AM EDT | Flash Flood Watch | PHI | Bucks, Delaware, Montgomery, Philadelphia | 15 hr |
| Jul 20, 2:44 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia | 34 hr |
| Jul 21, 4:40 AM EDT | Flash Flood Watch | CTP | Adams, Centre, Clinton, Columbia, Cumberland, Dauphin and 15 more | 23 hr |
| Jul 22, 11:43 AM EDT | Flash Flood Watch | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more | 11 hr |
| Jul 23, 3:45 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 68 hr |
| Jul 23, 3:59 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Centre, Clinton, Columbia and 20 more | 4 days |
| Jul 23, 12:07 PM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 62 hr |
| Jul 27, 9:36 AM EDT | Flash Flood Watch | CTP | Adams, Dauphin, Lancaster, Lebanon, Schuylkill, York | 13 hr |
| Jul 27, 9:50 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 13 hr |
| Aug 1, 4:06 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Centre, Clearfield and 22 more | 3 days |
| Aug 1, 4:16 AM EDT | Flash Flood Watch | PBZ | Fayette, Westmoreland | 63 hr |
| Aug 2, 3:31 AM EDT | Flash Flood Watch | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 55 hr |
| Aug 2, 3:44 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 50 hr |
| Aug 11, 3:05 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 18 hr |
| Aug 11, 3:24 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 20 hr |
| Aug 11, 10:54 AM EDT | Flash Flood Watch | CTP | Adams, Columbia, Cumberland, Dauphin, Juniata, Lancaster and 11 more | 8 hr |
| Aug 12, 10:08 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 24 hr |
| Aug 13, 1:46 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Centre, Clinton and 21 more | 43 hr |
| Aug 13, 3:15 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 45 hr |
| Aug 18, 3:16 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 20 hr |
| Sep 8, 4:09 AM EDT | Flash Flood Watch | CLE | Crawford | 48 hr |
| Sep 17, 4:10 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 32 hr |
| Sep 17, 4:51 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 26 more | 31 hr |
| Sep 18, 9:27 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 6 hr |
| Sep 26, 4:15 PM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 4 hr |
| Oct 2, 11:17 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 13 hr |
| Oct 2, 1:12 PM EDT | Flash Flood Watch | CTP | Centre, Clearfield, Clinton, Columbia, Lycoming, McKean and 7 more | 9 hr |
| Oct 10, 3:16 PM EDT | Flash Flood Watch | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 38 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Delaware County15
- Montgomery County15
- Philadelphia County15
- Bucks County14
- Chester County14
- Adams County14
- Lancaster County14
- York County14
- Berks County12
- Franklin County12
- Lehigh County11
- Cumberland County11
- Dauphin County11
- Lebanon County11
- Northampton County10
- Perry County10
- Fulton County10
- Schuylkill County9
- Bedford County9
- Columbia County9
- Lycoming County9
- Montour County9
- Northumberland County9
- Snyder County9
- Union County9
- Carbon County8
- Monroe County8
- Lackawanna County8
- Luzerne County8
- Wayne County8
- Somerset County8
- Centre County8
- Clinton County8
- Sullivan County8
- Tioga County8
- Fayette County7
- Westmoreland County7
- Pike County7
- Huntingdon County7
- Mifflin County7
25 more counties
- Juniata County7
- Bradford County7
- Susquehanna County7
- Wyoming County7
- Allegheny County6
- Washington County6
- Blair County6
- Greene County5
- Cambria County5
- Clearfield County5
- Potter County5
- McKean County4
- Cameron County3
- Elk County3
- Beaver County2
- Warren County2
- Armstrong County1
- Butler County1
- Clarion County1
- Forest County1
- Jefferson County1
- Lawrence County1
- Mercer County1
- Venango County1
- Crawford County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.