Alert archive / Illinois / Williamson County
Winter Weather Advisories in Williamson County, Illinois
94 winter weather advisories since 1986. An alert counts here when it covered this county. The archive of winter weather advisories reaches back to 2005.
Williamson County and its neighbors
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Winter Weather Advisories
- 94
- Busiest year
- 201011 winter weather advisories
- Average year
- 5over 20 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
The latest winter weather advisories
The most recent on file, newest first.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 30, 12:16 PM CST | Winter Weather Advisory | PAH | 39 hr |
| Feb 16, 1:53 AM CST | Winter Weather Advisory | PAH | 6 hr |
| Feb 10, 1:43 PM CST | Winter Weather Advisory | PAH | 20 hr |
| Jan 8, 1:39 PM CST | Winter Weather Advisory | PAH | 12 hr |
| Jan 4, 1:46 AM CST | Winter Weather Advisory | PAH | 58 hr |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive
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.