Alert archive / Illinois / Johnson County / Flood Watches
Flood Watches in Johnson County, Illinois, 2024
8 flood watches in 2024. An alert counts here when it covered this county. The archive of flood watches reaches back to 2005.
Johnson County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Flood Watches
- 8
- Busiest month
- May3 flood watches
- Busiest day
- January 23, 20241 flood watches
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 23, 12:57 PM CST | Flood Watch | PAH | 15 hr |
| May 8, 12:01 AM CDT | Flood Watch | PAH | 25 hr |
| May 16, 2:15 PM CDT | Flood Watch | PAH | 20 hr |
| May 25, 1:38 PM CDT | Flood Watch | PAH | 34 hr |
| Jul 8, 2:24 AM CDT | Flood Watch | PAH | 40 hr |
| Jul 15, 2:10 PM CDT | Flood Watch | PAH | 40 hr |
| Sep 26, 1:54 PM CDT | Flood Watch | PAH | 36 hr |
| Dec 28, 2:07 AM CST | Flood Watch | PAH | 25 hr |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.