Alert archive / Illinois / Stephenson County
Flash Flood Warnings in Stephenson County, Illinois
65 flash flood warnings since 1986. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.
Stephenson County and its neighbors
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Flash Flood Warnings
- 65
- Busiest year
- 20197 flash flood warnings
- Average year
- 3over 22 years on file
Over time
By year
Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with the weather.
The latest flash flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 19, 4:19 AM CDT | Flash Flood Warning | DVN | 6 hr |
| Jun 11, 4:57 PM CDT | Flash Flood Warning | DVN | 3 hr |
| Apr 15, 7:14 PM CDT | Flash Flood Warning | DVN | 3 hr |
| Apr 14, 7:58 PM CDT | Flash Flood Warning | DVN | 3 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. Rebuilt daily.