Alert archive / Pennsylvania / 2017
Weather alerts in Pennsylvania, September 2017
66 weather alerts in September 2017, 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 September 2017. Tap one for its archive.
- Alerts
- 66
- Warnings
- 17
- Watches
- 2
- Advisories
- 17
- Busiest day
- September 5, 201739 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 |
|---|---|---|---|---|
| Sep 2, 9:37 PM EDT | Beach Hazards Statement | CLE | Erie | 23 hr |
| Sep 3, 5:41 PM EDT | Special Weather Statement | PHI | Lehigh | 34 min |
| Sep 3, 9:57 PM EDT | Beach Hazards Statement | CLE | Erie | 30 hr |
| Sep 4, 6:50 PM EDT | Mesoscale Discussion | SPC | Crawford, Erie, McKean, Warren | 115 min |
| Sep 4, 10:18 PM EDT | Special Weather Statement | CLE | Erie | 42 min |
| Sep 4, 10:26 PM EDT | Mesoscale Discussion | SPC | Erie | 64 min |
| Sep 4, 10:54 PM EDT | Special Weather Statement | CTP | Warren | 66 min |
| Sep 4, 11:07 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 68 min |
| Sep 4, 11:40 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 35 min |
| Sep 4, 11:56 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 64 min |
| Sep 5, 12:11 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 73 min |
| Sep 5, 12:16 AM EDT | Special Weather Statement | PBZ | Venango | 59 min |
| Sep 5, 12:17 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 28 min |
| Sep 5, 12:58 AM EDT | Special Weather Statement | PBZ | Beaver | 47 min |
| Sep 5, 1:03 AM EDT | Special Weather Statement | CTP | McKean | 27 min |
| Sep 5, 1:22 AM EDT | Special Weather Statement | CTP | Potter | 23 min |
| Sep 5, 2:23 AM EDT | Special Weather Statement | CTP | Cameron | 22 min |
| Sep 5, 2:33 AM EDT | Special Weather Statement | CTP | Clearfield | 27 min |
| Sep 5, 3:02 AM EDT | Special Weather Statement | CTP | Clearfield | 43 min |
| Sep 5, 2:31 PM EDT | Mesoscale Discussion | SPC | Adams, Cumberland, Dauphin, Franklin, Fulton, Juniata and 3 more | 59 min |
| Sep 5, 2:52 PM EDT | Special Weather Statement | CTP | Cumberland, Franklin, Fulton, Juniata, Perry | 38 min |
| Sep 5, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, Fulton | 58 min |
| Sep 5, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 13 more | 5 hr |
| Sep 5, 3:37 PM EDT | Special Weather Statement | CTP | Cumberland, Dauphin | 53 min |
| Sep 5, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, York | 84 min |
| Sep 5, 3:59 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 31 min |
| Sep 5, 4:05 PM EDT | Areal Flood Advisory | CTP | Cumberland | 3 hr |
| Sep 5, 4:07 PM EDT | Tornado Warning | CTP | Adams, York | 38 min |
| Sep 5, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 52 min |
| Sep 5, 4:34 PM EDT | Areal Flood Advisory | PHI | Berks | 6 hr |
| Sep 5, 4:35 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lancaster, Lebanon, York | 85 min |
| Sep 5, 4:42 PM EDT | Special Weather Statement | CTP | Schuylkill | 63 min |
| Sep 5, 4:54 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 51 min |
| Sep 5, 5:00 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 8 more | 90 min |
| Sep 5, 5:14 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 5, 5:19 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 56 min |
| Sep 5, 5:22 PM EDT | Areal Flood Advisory | PHI | Northampton | 4 hr |
| Sep 5, 5:30 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 5, 5:49 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 41 min |
| Sep 5, 6:03 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 3 hr |
| Sep 5, 6:19 PM EDT | Special Weather Statement | PHI | Chester, Delaware | 41 min |
| Sep 5, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 49 min |
| Sep 5, 6:44 PM EDT | Special Weather Statement | PHI | Bucks | 31 min |
| Sep 6, 6:02 AM EDT | Special Weather Statement | CLE | Crawford | 118 min |
| Sep 6, 9:14 PM EDT | Special Weather Statement | PBZ | Beaver | 46 min |
| Sep 7, 4:26 AM EDT | Beach Hazards Statement | CLE | Erie | 35 hr |
| Sep 7, 6:57 PM EDT | Special Weather Statement | PBZ | Beaver | 33 min |
| Sep 7, 8:19 PM EDT | Special Weather Statement | CLE | Erie | 41 min |
| Sep 8, 6:53 PM EDT | Special Weather Statement | PHI | Bucks | 67 min |
| Sep 13, 11:48 PM EDT | Areal Flood Advisory | PBZ | Indiana | 3 hr |
| Sep 14, 2:30 AM EDT | Areal Flood Advisory | PBZ | Forest | 3 hr |
| Sep 14, 12:43 PM EDT | Areal Flood Advisory | BGM | Bradford | 3 hr |
| Sep 14, 9:08 PM EDT | Dense Fog Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 13 hr |
| Sep 15, 12:37 AM EDT | Dense Fog Advisory | CLE | Crawford, Erie | 9 hr |
| Sep 15, 2:27 AM EDT | Dense Fog Advisory | CTP | Bedford, Blair, Cambria, Clearfield, Elk, McKean and 2 more | 7 hr |
| Sep 15, 9:30 PM EDT | Dense Fog Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 12 hr |
| Sep 16, 6:50 AM EDT | Dense Fog Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 3 hr |
| Sep 16, 7:27 PM EDT | Areal Flood Advisory | PHI | Delaware, Philadelphia | 3 hr |
| Sep 28, 9:09 AM EDT | Beach Hazards Statement | CLE | Erie | 6 hr |
| Sep 29, 3:59 AM EDT | Beach Hazards Statement | CLE | Erie | 35 hr |
| Sep 30, 3:56 AM EDT | Frost Advisory | CTP | Cambria, Cameron, Clearfield, Clinton, Elk, Lycoming and 3 more | 29 hr |
| Sep 30, 3:56 AM EDT | Freeze Watch | CTP | McKean, Potter | 10 hr |
| Sep 30, 4:01 AM EDT | Frost Advisory | BGM | Bradford, Susquehanna, Wayne | 29 hr |
| Sep 30, 1:01 PM EDT | Frost Advisory | PBZ | Armstrong, Butler, Clarion, Forest, Jefferson, Lawrence and 2 more | 20 hr |
| Sep 30, 1:58 PM EDT | Freeze Warning | CTP | McKean, Potter | 19 hr |
| Sep 30, 2:00 PM EDT | Frost Advisory | CLE | Crawford, 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 | 13 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 21 |
| Flooding | |
| Flash Flood Warning | 2 |
| Areal Flood Advisory | 8 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| Coast and beach | |
| Beach Hazards Statement | 5 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Erie County12
- Berks County10
- Lehigh County9
- Cumberland County9
- Northampton County8
- McKean County7
- Warren County7
- York County7
- Crawford County6
- Adams County6
- Bucks County6
- Beaver County5
- Clearfield County5
- Dauphin County5
- Franklin County5
- Lebanon County5
- Venango County4
- Potter County4
- Fulton County4
- Perry County4
- Carbon County4
- Chester County4
- Delaware County4
- Lancaster County4
- Montgomery County4
- Schuylkill County4
- Forest County4
- Cameron County3
- Juniata County3
- Monroe County3
- Philadelphia County3
- Armstrong County3
- Butler County3
- Clarion County3
- Jefferson County3
- Lawrence County3
- Mercer County3
- Cambria County3
- Elk County3
- Somerset County3
23 more counties
- Bradford County2
- Allegheny County2
- Fayette County2
- Greene County2
- Washington County2
- Westmoreland County2
- Bedford County2
- Blair County2
- Clinton County2
- Lycoming County2
- Tioga County2
- Indiana County1
- Centre County1
- Columbia County1
- Huntingdon County1
- Mifflin County1
- Montour County1
- Northumberland County1
- Snyder County1
- Sullivan County1
- Union County1
- Susquehanna County1
- Wayne County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.