River Flood Warnings in Illinois
5,947 river flood warnings since 1986. 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 warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- River Flood Warnings
- 5,947
- Busiest year
- 2019566 river flood warnings
- Average year
- 297over 20 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lawrence County471
- Crawford County444
- Wabash County437
- Rock Island County349
- Pike County312
- Gallatin County281
- LaSalle County277
- White County265
- Lake County248
- Hancock County234
- Calhoun County211
- Clay County207
- Richland County207
- Henry County203
- Whiteside County192
- Winnebago County192
- Alexander County183
- Cook County178
- Adams County177
- Fulton County175
- Henderson County165
- Jackson County165
- Cass County159
- Brown County151
- Clark County137
- Mason County136
- Jersey County134
- Mercer County132
- Wayne County111
- Kane County108
- Putnam County108
- Will County108
- Iroquois County106
- Pulaski County104
- Bureau County99
- Hardin County99
- Massac County99
- Fayette County97
- Morgan County95
- Grundy County91
45 more counties
- Tazewell County88
- Woodford County87
- Edwards County86
- Pope County85
- McDonough County84
- Knox County76
- Piatt County74
- Kankakee County71
- Randolph County70
- Jo Daviess County67
- Union County67
- Madison County60
- Kendall County60
- Greene County56
- Marshall County55
- Schuyler County55
- Peoria County54
- Menard County53
- McHenry County49
- Scott County47
- Saint Clair County47
- Franklin County45
- Williamson County45
- Ogle County42
- Clinton County42
- Stephenson County40
- Jasper County37
- McLean County34
- Carroll County33
- Boone County29
- Vermilion County24
- Livingston County22
- DuPage County20
- Lee County18
- DeKalb County12
- Sangamon County12
- Monroe County9
- Champaign County2
- Coles County2
- Douglas County2
- Edgar County2
- Marion County2
- DeWitt County1
- Logan County1
- Macon County1
The latest river flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 9:36 PM CDT | River Flood Warning | DVN | Hancock | 3 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Hancock, Henderson | 5 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Henderson | 5 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Henderson, Mercer | 4 days |
| Sep 21, 10:21 AM CDT | River Flood Warning | LOT | Lake | 5 days |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Calhoun | 21 days |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Pike | 7 days |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Adams | 10 hr |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Pike | 7 days |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Calhoun | 21 days |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Adams | 7 days |
| Sep 20, 9:35 AM CDT | River Flood Warning | MKX | Lake | 6 days |
Nearby
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.