Alert archive / Pennsylvania / 1999
Weather alerts in Pennsylvania, March 1999
15 weather alerts in March 1999, 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 March 1999. Tap one for its archive.
- Alerts
- 15
- Warnings
- 14
- Watches
- 1
- Advisories
- 0
- Busiest day
- March 22, 199910 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 |
|---|---|---|---|---|
| Mar 3, 6:30 PM EST | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Centre, Chester and 26 more | 7 hr |
| Mar 3, 6:57 PM EST | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 43 min |
| Mar 3, 7:13 PM EST | Severe Thunderstorm Warning | CTP | Lycoming | 47 min |
| Mar 3, 7:55 PM EST | Severe Thunderstorm Warning | CTP | Juniata, Mifflin | 50 min |
| Mar 3, 9:48 PM EST | Flash Flood Warning | CTP | Clinton, Lycoming | 3 hr |
| Mar 21, 7:57 PM EST | Flash Flood Warning | PHI | Chester | 6 hr |
| Mar 21, 8:47 PM EST | Flash Flood Warning | CTP | Lancaster, York | 5 hr |
| Mar 21, 9:10 PM EST | Flash Flood Warning | PHI | Berks | 5 hr |
| Mar 21, 9:40 PM EST | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe | 4 hr |
| Mar 21, 10:34 PM EST | Flash Flood Warning | PHI | Montgomery | 3 hr |
| Mar 21, 11:15 PM EST | Flash Flood Warning | PHI | Bucks | 3 hr |
| Mar 21, 11:50 PM EST | Flash Flood Warning | PHI | Philadelphia | 3 hr |
| Mar 22, 12:19 AM EST | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 3 hr |
| Mar 22, 12:19 AM EST | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Mar 22, 12:19 AM EST | Flash Flood Warning | PHI | Berks, Chester | 3 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 | 3 |
| Severe Thunderstorm Watch | 1 |
| Flooding | |
| Flash Flood Warning | 11 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Berks County3
- Bucks County3
- Carbon County3
- Chester County3
- Lehigh County3
- Monroe County3
- Montgomery County3
- Philadelphia County3
- Clinton County2
- Delaware County2
- Franklin County2
- Fulton County2
- Juniata County2
- Lancaster County2
- Mifflin County2
- Northampton County2
- York County2
- Lycoming County2
- Adams County1
- Centre County1
- Columbia County1
- Cumberland County1
- Dauphin County1
- Huntingdon County1
- Lebanon County1
- Luzerne County1
- Montour County1
- Northumberland County1
- Perry County1
- Pike County1
- Schuylkill County1
- Snyder County1
- Union County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.