Alert archive / Pennsylvania / Heat Advisories
Heat Advisories in Pennsylvania, 2020
10 heat advisories in 2020. 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Heat Advisories
- 10
- Busiest month
- July8 heat advisories
- Busiest day
- July 18, 20203 heat advisories
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 |
|---|---|---|---|---|
| Jun 10, 3:16 AM EDT | Heat Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 15 hr |
| Jul 6, 3:16 AM EDT | Heat Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 12 hr |
| Jul 8, 3:41 PM EDT | Heat Advisory | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 28 hr |
| Jul 18, 3:55 AM EDT | Heat Advisory | PHI | Berks, Bucks, Lehigh, Northampton | 64 hr |
| Jul 18, 1:26 PM EDT | Heat Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 3 more | 28 hr |
| Jul 18, 2:29 PM EDT | Heat Advisory | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 1 more | 54 hr |
| Jul 20, 7:57 PM EDT | Heat Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 48 hr |
| Jul 22, 3:13 AM EDT | Heat Advisory | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more | 17 hr |
| Jul 27, 3:06 PM EDT | Heat Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 29 hr |
| Aug 1, 3:20 PM EDT | Heat Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 29 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County6
- Chester County5
- Delaware County5
- Montgomery County5
- Philadelphia County5
- Berks County4
- Lehigh County4
- Northampton County3
- Allegheny County2
- Beaver County2
- Fayette County2
- Greene County2
- Washington County2
- Westmoreland County2
- Adams County2
- Cumberland County2
- Dauphin County2
- Franklin County2
- Lancaster County2
- Lebanon County2
- York County2
- Armstrong County1
- Butler County1
- Lawrence County1
- Perry County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.