Alert archive / Pennsylvania / 1987
Weather alerts in Pennsylvania, September 1987
29 weather alerts in September 1987, 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 1987. Tap one for its archive.
- Alerts
- 29
- Warnings
- 29
- Watches
- 0
- Advisories
- 0
- Busiest day
- September 17, 19878 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 8, 6:45 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 8, 9:30 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 8, 11:11 PM EDT | Flash Flood Warning | PHI | Montgomery | 4 hr |
| Sep 8, 11:25 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 11, 4:00 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 60 min |
| Sep 12, 8:20 PM EDT | Flash Flood Warning | CTP | Cumberland | 4 hr |
| Sep 12, 8:44 PM EDT | Flash Flood Warning | CTP | Dauphin | 4 hr |
| Sep 12, 9:56 PM EDT | Flash Flood Warning | CTP | Cumberland | 6 hr |
| Sep 13, 1:17 AM EDT | Flash Flood Warning | CLE | Cameron, McKean, Potter | 5 hr |
| Sep 13, 1:17 AM EDT | Flash Flood Warning | CLE | Elk | 5 hr |
| Sep 13, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler | 55 min |
| Sep 17, 1:56 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 64 min |
| Sep 17, 2:35 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 55 min |
| Sep 17, 2:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 62 min |
| Sep 17, 3:50 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 70 min |
| Sep 17, 4:24 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 66 min |
| Sep 17, 5:48 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 57 min |
| Sep 17, 6:00 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 60 min |
| Sep 17, 7:19 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 61 min |
| Sep 17, 8:54 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 56 min |
| Sep 17, 9:04 PM EDT | Flash Flood Warning | CTP | Cumberland | 3 hr |
| Sep 17, 11:22 PM EDT | Flash Flood Warning | PBZ | Fayette, Westmoreland | 3 hr |
| Sep 17, 11:23 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 57 min |
| Sep 18, 5:26 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 64 min |
| Sep 22, 2:43 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 62 min |
| Sep 22, 3:56 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 34 min |
| Sep 22, 3:58 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 42 min |
| Sep 22, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 41 min |
| Sep 22, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 41 min |
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 | 18 |
| Flooding | |
| Flash Flood Warning | 11 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lancaster County5
- Montgomery County4
- Westmoreland County4
- Cumberland County4
- Bucks County3
- Indiana County2
- Allegheny County2
- Dauphin County1
- Cameron County1
- McKean County1
- Potter County1
- Elk County1
- Armstrong County1
- Butler County1
- Erie County1
- Beaver County1
- Washington County1
- Fayette County1
- Adams County1
- Chester County1
- Philadelphia County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19861988
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.