Areal Flood Advisories in Illinois
2,888 areal flood advisories 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 areal flood advisories reaches back to 2005.
Areal Flood Advisories by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Areal Flood Advisories
- 2,888
- Busiest year
- 2010240 areal flood advisories
- Average year
- 152over 19 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.
- Cook County415
- Will County314
- DuPage County246
- LaSalle County217
- Kane County206
- DeKalb County178
- Kendall County170
- Livingston County168
- Iroquois County165
- Kankakee County163
- Grundy County156
- McHenry County145
- Lake County141
- Lee County139
- Ogle County136
- Madison County133
- Ford County131
- Saint Clair County128
- Pope County123
- Winnebago County121
- Massac County115
- Boone County114
- Hamilton County112
- White County112
- Franklin County109
- Williamson County105
- Wayne County103
- Jackson County102
- Saline County101
- Jefferson County99
- Perry County96
- Gallatin County93
- Alexander County91
- Union County91
- Johnson County90
- Fayette County89
- Pulaski County89
- Bond County86
- Clinton County85
- Wabash County85
56 more counties
- Marion County83
- Edwards County81
- Sangamon County80
- Adams County77
- Monroe County77
- Macoupin County74
- Fulton County73
- Washington County69
- Montgomery County68
- Hardin County68
- Tazewell County65
- Coles County65
- Logan County63
- Macon County63
- Effingham County62
- Jasper County62
- Clay County60
- Peoria County60
- Shelby County60
- Mason County58
- Morgan County58
- Vermilion County58
- McLean County56
- Pike County56
- Cass County55
- Champaign County54
- Richland County53
- Woodford County53
- Christian County51
- Crawford County51
- Knox County51
- Menard County50
- Cumberland County48
- Edgar County47
- Lawrence County47
- Randolph County47
- Calhoun County46
- Moultrie County46
- Schuyler County45
- Jersey County44
- DeWitt County41
- Brown County40
- Douglas County40
- Piatt County38
- Greene County37
- Scott County36
- Clark County36
- Marshall County31
- Stark County31
- Stephenson County2
- Bureau County2
- Whiteside County2
- Carroll County1
- Henderson County1
- Warren County1
- Jo Daviess County1
The latest areal flood advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 1:28 PM CDT | Areal Flood Advisory | LOT | Lee | 6 hr |
| Sep 20, 7:32 AM CDT | Areal Flood Advisory | LOT | DeKalb, Lee | 6 hr |
| Sep 20, 4:59 AM CDT | Areal Flood Advisory | LOT | Kankakee, Will | 3 hr |
| Sep 20, 4:30 AM CDT | Areal Flood Advisory | LOT | Boone, McHenry, Winnebago | 4 hr |
| Sep 20, 3:48 AM CDT | Areal Flood Advisory | LOT | Cook, DuPage, Kane, Kendall, Will | 6 hr |
| Sep 20, 12:16 AM CDT | Areal Flood Advisory | LOT | DeKalb, LaSalle, Lee | 116 min |
| Sep 19, 3:29 AM CDT | Areal Flood Advisory | LOT | Boone, Lake, McHenry, Winnebago | 8 hr |
| Sep 17, 6:49 AM CDT | Areal Flood Advisory | LOT | DeKalb, LaSalle, Lee | 5 hr |
| Sep 17, 6:37 AM CDT | Areal Flood Advisory | LOT | Cook, DuPage, Kendall, Will | 5 hr |
| Sep 16, 4:38 PM CDT | Areal Flood Advisory | LSX | Saint Clair | 3 hr |
| Sep 16, 12:45 AM CDT | Areal Flood Advisory | LSX | Adams | 5 hr |
| Aug 21, 11:58 PM CDT | Areal Flood Advisory | LOT | LaSalle | 6 hr |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.