Alert archive / Illinois / River Flood Watches
River Flood Watches in Illinois, 2020
66 river flood watches in 2020. 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 2020. Tap one for its archive.
- River Flood Watches
- 66
- Busiest month
- March32 river flood watches
- Busiest day
- March 27, 20209 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 |
|---|---|---|---|---|
| Jan 9, 10:44 AM CST | River Flood Watch | DVN | Hancock, McDonough | 42 hr |
| Jan 9, 11:15 AM CST | River Flood Watch | LOT | Grundy | 4 days |
| Jan 9, 11:15 AM CST | River Flood Watch | LOT | Livingston | 5 days |
| Jan 9, 11:15 AM CST | River Flood Watch | LOT | LaSalle | 6 days |
| Jan 9, 11:23 AM CST | River Flood Watch | LOT | Grundy | 21 days |
| Jan 9, 11:23 AM CST | River Flood Watch | LOT | LaSalle | 21 days |
| Jan 9, 11:23 AM CST | River Flood Watch | LOT | LaSalle | 21 days |
| Jan 10, 7:35 PM CST | River Flood Watch | LOT | LaSalle | 70 hr |
| Jan 24, 11:16 AM CST | River Flood Watch | LOT | LaSalle | 47 hr |
| Mar 9, 10:08 AM CDT | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 24 hr |
| Mar 9, 10:51 AM CDT | River Flood Watch | MKX | Winnebago | 35 hr |
| Mar 10, 10:22 AM CDT | River Flood Watch | MKX | Lake | 12 hr |
| Mar 10, 7:31 PM CDT | River Flood Watch | DVN | Henry, Rock Island | 16 hr |
| Mar 17, 10:55 AM CDT | River Flood Watch | DVN | Henderson, Mercer | 21 days |
| Mar 17, 8:31 PM CDT | River Flood Watch | DVN | Rock Island | 21 days |
| Mar 17, 8:31 PM CDT | River Flood Watch | DVN | Mercer | 21 days |
| Mar 18, 11:02 AM CDT | River Flood Watch | DVN | Mercer, Rock Island | 21 days |
| Mar 18, 8:59 PM CDT | River Flood Watch | DVN | Jo Daviess | 21 days |
| Mar 18, 8:59 PM CDT | River Flood Watch | DVN | Rock Island, Whiteside | 21 days |
| Mar 18, 9:33 PM CDT | River Flood Watch | LOT | LaSalle | 37 hr |
| Mar 19, 10:07 AM CDT | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 24 hr |
| Mar 19, 10:07 AM CDT | River Flood Watch | DVN | Henry, Rock Island | 11 hr |
| Mar 19, 10:34 AM CDT | River Flood Watch | LOT | Winnebago | 10 hr |
| Mar 19, 10:51 AM CDT | River Flood Watch | MKX | Winnebago | 3 days |
| Mar 19, 10:51 AM CDT | River Flood Watch | MKX | Winnebago | 21 days |
| Mar 20, 10:47 AM CDT | River Flood Watch | MKX | Winnebago | 21 days |
| Mar 26, 8:02 PM CDT | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 21 days |
| Mar 26, 8:02 PM CDT | River Flood Watch | DVN | Henry, Rock Island | 21 days |
| Mar 26, 8:33 PM CDT | River Flood Watch | LOT | LaSalle | 52 hr |
| Mar 26, 8:53 PM CDT | River Flood Watch | DVN | Jo Daviess | 21 days |
| Mar 27, 8:24 AM CDT | River Flood Watch | LOT | Iroquois | 6 days |
| Mar 27, 8:24 AM CDT | River Flood Watch | LOT | Iroquois | 4 days |
| Mar 27, 10:12 AM CDT | River Flood Watch | LOT | LaSalle | 24 hr |
| Mar 27, 10:59 AM CDT | River Flood Watch | DVN | Rock Island, Whiteside | 21 days |
| Mar 27, 10:59 AM CDT | River Flood Watch | DVN | Hancock | 21 days |
| Mar 27, 9:13 PM CDT | River Flood Watch | DVN | Jo Daviess | 61 hr |
| Mar 28, 9:45 AM CDT | River Flood Watch | MKX | Lake | 19 hr |
| Mar 28, 10:39 AM CDT | River Flood Watch | DVN | Whiteside | 24 hr |
| Mar 28, 11:25 AM CDT | River Flood Watch | DVN | Carroll, Whiteside | 21 days |
| Mar 28, 11:25 AM CDT | River Flood Watch | DVN | Rock Island | 10 hr |
| Mar 30, 8:06 PM CDT | River Flood Watch | DVN | Rock Island | 21 days |
| Apr 1, 10:08 AM CDT | River Flood Watch | DVN | Carroll, Jo Daviess | 35 hr |
| Apr 16, 8:19 PM CDT | River Flood Watch | DVN | Hancock | 13 hr |
| Apr 29, 8:54 AM CDT | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 34 hr |
| Apr 29, 9:28 AM CDT | River Flood Watch | MKX | Lake | 13 hr |
| Apr 29, 11:54 AM CDT | River Flood Watch | LOT | LaSalle | 10 hr |
| Apr 29, 11:54 AM CDT | River Flood Watch | LOT | LaSalle | 5 days |
| Apr 29, 11:54 AM CDT | River Flood Watch | LOT | LaSalle | 21 days |
| Apr 29, 11:54 AM CDT | River Flood Watch | LOT | Winnebago | 10 hr |
| Apr 29, 11:54 AM CDT | River Flood Watch | LOT | LaSalle | 10 hr |
| May 14, 10:01 AM CDT | River Flood Watch | LOT | Kane, Kendall | 51 hr |
| May 14, 10:01 AM CDT | River Flood Watch | LOT | LaSalle | 3 days |
| May 14, 11:22 AM CDT | River Flood Watch | LOT | LaSalle | 25 hr |
| May 14, 11:22 AM CDT | River Flood Watch | LOT | LaSalle | 6 days |
| May 14, 2:31 PM CDT | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 5 days |
| May 14, 2:31 PM CDT | River Flood Watch | DVN | Henry, Rock Island | 6 days |
| May 15, 10:40 AM CDT | River Flood Watch | DVN | Hancock, McDonough | 23 hr |
| May 16, 7:21 PM CDT | River Flood Watch | LOT | 45 hr | |
| May 16, 8:00 PM CDT | River Flood Watch | LOT | Grundy | 17 hr |
| May 16, 8:20 PM CDT | River Flood Watch | MKX | Lake | 15 hr |
| May 17, 1:15 PM CDT | River Flood Watch | LOT | Iroquois | 6 days |
| May 17, 1:15 PM CDT | River Flood Watch | LOT | Iroquois, Kankakee | 5 days |
| Jun 24, 10:07 AM CDT | River Flood Watch | DVN | Henderson | 7 days |
| Jun 24, 10:07 AM CDT | River Flood Watch | DVN | Hancock, Henderson | 7 days |
| Jun 26, 9:06 PM CDT | River Flood Watch | DVN | Henderson, Mercer | 62 hr |
| Aug 11, 7:25 AM CDT | River Flood Watch | MKX | Lake | 18 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 archive20192021
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.