Alert archive / Pennsylvania / Heat Advisories / 2021
Heat Advisories in Pennsylvania, August 2021
8 heat advisories in August 2021. 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 August 2021. Tap one for its archive.
- Heat Advisories
- 8
- Busiest day
- August 10, 20214 heat advisories
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 10, 3:33 AM EDT | Heat Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 4 days |
| Aug 10, 12:55 PM EDT | Heat Advisory | CTP | Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 10 more | 30 hr |
| Aug 10, 12:55 PM EDT | Heat Advisory | CTP | Adams, Bedford, Blair, Centre, Clinton, Columbia and 19 more | 54 hr |
| Aug 10, 3:14 PM EDT | Heat Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 28 hr |
| Aug 11, 3:15 AM EDT | Heat Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 40 hr |
| Aug 12, 3:15 AM EDT | Heat Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 3 more | 16 hr |
| Aug 12, 3:33 AM EDT | Heat Advisory | CTP | Columbia, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 8 more | 39 hr |
| Aug 25, 2:13 PM EDT | Heat Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 53 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Columbia County3
- Cumberland County3
- Franklin County3
- Juniata County3
- Lycoming County3
- Montour County3
- Northumberland County3
- Perry County3
- Schuylkill County3
- Snyder County3
- Union County3
- Adams County2
- Dauphin County2
- Lancaster County2
- Lebanon County2
- York County2
- Fulton County2
- Huntingdon County2
- Mifflin County2
- Bradford County2
- Lackawanna County2
- Luzerne County2
- Pike County2
- Susquehanna County2
- Wayne County2
- Wyoming County2
- Berks County1
- Carbon County1
- Lehigh County1
- Monroe County1
- Northampton County1
- Bedford County1
- Blair County1
- Centre County1
- Clinton County1
- Sullivan County1
- Tioga County1
- Allegheny County1
- Armstrong County1
- Beaver County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.