Alert archive / Illinois / River Flood Watches
River Flood Watches in Illinois, 2018
78 river flood watches in 2018. 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 2018. Tap one for its archive.
- River Flood Watches
- 78
- Busiest month
- February22 river flood watches
- Busiest day
- February 19, 201813 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 23, 2:36 PM CST | River Flood Watch | DVN | Whiteside | 5 days |
| Feb 18, 10:36 AM CST | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 47 hr |
| Feb 18, 10:36 AM CST | River Flood Watch | DVN | Henry, Rock Island | 47 hr |
| Feb 18, 8:17 PM CST | River Flood Watch | DVN | Whiteside | 4 days |
| Feb 18, 9:31 PM CST | River Flood Watch | MKX | Lake | 7 days |
| Feb 18, 9:38 PM CST | River Flood Watch | LOT | Kankakee | 5 days |
| Feb 18, 9:38 PM CST | River Flood Watch | LOT | 4 days | |
| Feb 18, 9:38 PM CST | River Flood Watch | LOT | Ogle | 37 hr |
| Feb 18, 9:41 PM CST | River Flood Watch | LOT | Grundy | 6 days |
| Feb 18, 9:41 PM CST | River Flood Watch | LOT | LaSalle | 24 hr |
| Feb 18, 9:41 PM CST | River Flood Watch | LOT | LaSalle | 24 hr |
| Feb 19, 10:40 AM CST | River Flood Watch | LOT | Iroquois, Kankakee | 7 days |
| Feb 19, 10:40 AM CST | River Flood Watch | LOT | Grundy | 6 days |
| Feb 19, 10:40 AM CST | River Flood Watch | LOT | Lake | 24 hr |
| Feb 19, 10:40 AM CST | River Flood Watch | LOT | Lake | 4 days |
| Feb 19, 10:40 AM CST | River Flood Watch | LOT | DuPage | 51 hr |
| Feb 19, 9:01 PM CST | River Flood Watch | DVN | Henry | 4 days |
| Feb 19, 9:19 PM CST | River Flood Watch | LOT | Kane, McHenry | 51 hr |
| Feb 19, 9:19 PM CST | River Flood Watch | LOT | Kane, Kendall | 4 days |
| Feb 19, 9:19 PM CST | River Flood Watch | LOT | LaSalle | 4 days |
| Feb 19, 10:01 PM CST | River Flood Watch | LOT | Winnebago | 3 days |
| Feb 20, 10:23 AM CST | River Flood Watch | DVN | Stephenson | 8 days |
| Feb 21, 10:56 AM CST | River Flood Watch | DVN | Henderson | 6 days |
| Apr 30, 11:08 AM CDT | River Flood Watch | DVN | Jo Daviess | 8 days |
| Apr 30, 11:08 AM CDT | River Flood Watch | DVN | Mercer, Rock Island | 35 hr |
| Apr 30, 11:08 AM CDT | River Flood Watch | DVN | Mercer | 35 hr |
| Apr 30, 11:08 AM CDT | River Flood Watch | DVN | Henderson, Mercer | 35 hr |
| Apr 30, 11:08 AM CDT | River Flood Watch | DVN | Henderson | 35 hr |
| Apr 30, 11:08 AM CDT | River Flood Watch | DVN | Hancock, Henderson | 35 hr |
| May 1, 4:28 PM CDT | River Flood Watch | DVN | Carroll, Whiteside | 24 hr |
| May 1, 4:28 PM CDT | River Flood Watch | DVN | Rock Island | 24 hr |
| May 3, 10:16 AM CDT | River Flood Watch | LOT | 24 hr | |
| May 3, 11:15 AM CDT | River Flood Watch | DVN | Carroll, Jo Daviess | 11 hr |
| May 3, 11:15 AM CDT | River Flood Watch | DVN | Hancock | 7 days |
| May 3, 11:15 AM CDT | River Flood Watch | DVN | Hancock | 16 hr |
| Jun 10, 9:47 AM CDT | River Flood Watch | DVN | Henry, Rock Island | 10 hr |
| Jun 11, 10:06 AM CDT | River Flood Watch | LOT | Iroquois | 10 hr |
| Jun 19, 2:22 AM CDT | River Flood Watch | LOT | Winnebago | 7 hr |
| Jun 19, 9:13 AM CDT | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 12 hr |
| Jun 19, 9:13 AM CDT | River Flood Watch | DVN | Henry, Rock Island | 35 hr |
| Jun 20, 8:57 PM CDT | River Flood Watch | DVN | Whiteside | 24 hr |
| Jun 20, 8:57 PM CDT | River Flood Watch | DVN | Stephenson | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Jo Daviess | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Rock Island | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Mercer, Rock Island | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Mercer | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Henderson, Mercer | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Henderson | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Hancock, Henderson | 24 hr |
| Jun 20, 9:42 PM CDT | River Flood Watch | DVN | Hancock | 37 hr |
| Jun 21, 11:32 AM CDT | River Flood Watch | DVN | Rock Island, Whiteside | 24 hr |
| Jun 21, 2:05 PM CDT | River Flood Watch | DVN | Rock Island | 24 hr |
| Jun 22, 9:30 AM CDT | River Flood Watch | LOT | Lake | 11 hr |
| Jun 22, 11:06 AM CDT | River Flood Watch | DVN | Jo Daviess | 3 days |
| Jun 22, 8:52 PM CDT | River Flood Watch | DVN | Carroll, Whiteside | 5 days |
| Jun 22, 8:52 PM CDT | River Flood Watch | DVN | Rock Island | 5 days |
| Jun 26, 11:26 AM CDT | River Flood Watch | DVN | Hancock | 3 days |
| Sep 2, 9:31 AM CDT | River Flood Watch | LOT | Winnebago | 25 hr |
| Sep 2, 9:05 PM CDT | River Flood Watch | LOT | Winnebago | 24 hr |
| Sep 2, 9:05 PM CDT | River Flood Watch | LOT | Winnebago | 3 hr |
| Sep 3, 12:27 AM CDT | River Flood Watch | LOT | Ogle | 10 hr |
| Sep 3, 10:37 AM CDT | River Flood Watch | LOT | Boone | 38 hr |
| Sep 20, 11:19 AM CDT | River Flood Watch | DVN | Henderson | 35 hr |
| Sep 20, 11:19 AM CDT | River Flood Watch | DVN | Hancock, Henderson | 35 hr |
| Sep 20, 12:46 PM CDT | River Flood Watch | LOT | Winnebago | 22 hr |
| Sep 21, 11:17 AM CDT | River Flood Watch | DVN | Henderson, Mercer | 24 hr |
| Sep 28, 11:15 AM CDT | River Flood Watch | DVN | Hancock | 10 hr |
| Oct 5, 10:38 AM CDT | River Flood Watch | LOT | Lake | 6 days |
| Oct 5, 10:38 AM CDT | River Flood Watch | LOT | Lake | 6 days |
| Oct 5, 10:38 AM CDT | River Flood Watch | LOT | Kane, Kendall | 10 hr |
| Oct 5, 11:02 AM CDT | River Flood Watch | LOT | Lee | 6 days |
| Oct 5, 11:03 AM CDT | River Flood Watch | LOT | Boone | 48 hr |
| Oct 5, 11:03 AM CDT | River Flood Watch | LOT | Winnebago | 52 hr |
| Oct 7, 9:16 PM CDT | River Flood Watch | DVN | Rock Island, Whiteside | 15 hr |
| Nov 30, 10:43 AM CST | River Flood Watch | DVN | Hancock, McDonough | 34 hr |
| Nov 30, 10:43 AM CST | River Flood Watch | DVN | Henry, Rock Island, Whiteside | 58 hr |
| Nov 30, 10:43 AM CST | River Flood Watch | DVN | Henry, Rock Island | 58 hr |
| Dec 1, 11:05 AM CST | River Flood Watch | LOT | Lake | 20 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Rock Island County15
- Whiteside County10
- Henderson County10
- Hancock County9
- Henry County8
- Lake County7
- Winnebago County7
- Mercer County7
- Jo Daviess County4
- LaSalle County3
- Kane County3
- Carroll County3
- Kankakee County2
- Ogle County2
- Grundy County2
- Iroquois County2
- Kendall County2
- Stephenson County2
- Boone County2
- DuPage County1
- McHenry County1
- Lee County1
- McDonough County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.