Alert archive / Illinois / River Flood Watches
River Flood Watches in Illinois, 2021
16 river flood watches in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of river flood watches reaches back to 2005.
River Flood Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- River Flood Watches
- 16
- Busiest month
- October10 river flood watches
- Busiest day
- October 24, 20218 river 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 | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 11:39 AM CDT | River Flood Watch | DVN | Hancock, McDonough | 27 hr |
| Apr 12, 11:03 AM CDT | River Flood Watch | DVN | Henderson | 5 hr |
| May 8, 10:30 AM CDT | River Flood Watch | DVN | Hancock, McDonough | 48 hr |
| May 16, 8:15 PM CDT | River Flood Watch | DVN | Hancock, McDonough | 25 hr |
| Jul 9, 8:58 AM CDT | River Flood Watch | DVN | Hancock, McDonough | 17 hr |
| Aug 12, 1:39 PM CDT | River Flood Watch | DVN | Hancock, McDonough | 8 hr |
| Oct 23, 8:39 PM CDT | River Flood Watch | DVN | Hancock, McDonough | 28 hr |
| Oct 23, 9:57 PM CDT | River Flood Watch | LOT | Cook | 12 hr |
| Oct 23, 9:57 PM CDT | River Flood Watch | LOT | Iroquois | 38 hr |
| Oct 23, 9:57 PM CDT | River Flood Watch | LOT | LaSalle | 4 days |
| Oct 23, 9:57 PM CDT | River Flood Watch | LOT | Livingston | 3 days |
| Oct 24, 11:28 AM CDT | River Flood Watch | LOT | Grundy, LaSalle | 71 hr |
| Oct 24, 11:28 AM CDT | River Flood Watch | LOT | Bureau, LaSalle, Putnam | 6 days |
| Oct 24, 11:28 AM CDT | River Flood Watch | LOT | LaSalle | 3 days |
| Oct 24, 8:56 PM CDT | River Flood Watch | LOT | Iroquois, Kankakee | 15 hr |
| Oct 24, 8:56 PM CDT | River Flood Watch | LOT | Iroquois | 36 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.