Alert archive / Pennsylvania / Union County
Weather alerts in Union County, Pennsylvania, 1999
31 weather alerts in 1999, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Union County and its neighbors
Each county as a circle sized by its count in 1999. Tap one for its archive.
- Alerts
- 31
- Warnings
- 24
- Watches
- 7
- Advisories
- 0
- Busiest month
- July9 alerts
- Busiest day
- January 24, 19993 alerts
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 | Lasted |
|---|---|---|---|
| Jan 18, 2:19 PM EST | Severe Thunderstorm Warning | CTP | 61 min |
| Jan 24, 3:58 AM EST | Flash Flood Warning | CTP | 4 hr |
| Jan 24, 8:00 AM EST | Flash Flood Warning | CTP | 4 hr |
| Jan 24, 11:59 AM EST | Flash Flood Warning | CTP | 4 hr |
| Mar 3, 6:30 PM EST | Severe Thunderstorm Watch | SPC | 7 hr |
| May 8, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| May 24, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 24, 2:40 PM EDT | Severe Thunderstorm Warning | CTP | 50 min |
| Jun 2, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | 78 min |
| Jun 7, 4:11 PM EDT | Severe Thunderstorm Warning | CTP | 49 min |
| Jul 6, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 9, 5:35 PM EDT | Severe Thunderstorm Warning | CTP | 55 min |
| Jul 9, 6:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 9, 9:47 PM EDT | Severe Thunderstorm Warning | CTP | 73 min |
| Jul 9, 10:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 30, 3:56 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Jul 30, 4:52 PM EDT | Severe Thunderstorm Warning | CTP | 83 min |
| Jul 30, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Jul 31, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 13, 5:39 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Aug 20, 10:18 AM EDT | Flash Flood Warning | CTP | 4 hr |
| Aug 20, 2:05 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Aug 20, 5:15 PM EDT | Flash Flood Warning | CTP | 5 hr |
| Sep 6, 11:37 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Sep 7, 2:25 AM EDT | Flash Flood Warning | CTP | 4 hr |
| Sep 9, 10:45 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Sep 16, 4:35 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Sep 16, 7:30 PM EDT | Flash Flood Warning | CTP | 90 min |
| Sep 30, 1:25 AM EDT | Flash Flood Warning | CTP | 3 hr |
| Oct 13, 6:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 13, 9:25 PM EDT | Severe Thunderstorm Warning | CTP | 50 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 | 12 |
| Severe Thunderstorm Watch | 7 |
| Flooding | |
| Flash Flood Warning | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.