Alert archive / Illinois / River Flood Advisories / 2021
River Flood Advisories in Illinois, May 2021
6 river flood advisories in May 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 advisories reaches back to 2005.
River Flood Advisories by county
Each county as a circle sized by its count in May 2021. Tap one for its archive.
- River Flood Advisories
- 6
- Busiest day
- May 10, 20213 river flood advisories
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| May 9, 10:43 AM CDT | River Flood Advisory | LOT | Cook | 5 hr |
| May 9, 10:43 AM CDT | River Flood Advisory | LOT | Cook | 21 hr |
| May 10, 8:30 AM CDT | River Flood Advisory | LOT | Iroquois | 23 hr |
| May 10, 12:51 PM CDT | River Flood Advisory | LOT | LaSalle | 30 hr |
| May 10, 12:51 PM CDT | River Flood Advisory | LOT | Bureau, LaSalle, Putnam | 60 hr |
| May 11, 8:12 AM CDT | River Flood Advisory | LOT | Bureau, LaSalle, Putnam | 35 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
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.