Weather alerts in Illinois
71,185 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Alerts
- 71,185
- Warnings
- 40,242
- Watches
- 4,895
- Advisories
- 11,997
- Busiest year
- 20193,963 alerts
- Average year
- 1,736over 41 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 product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- LaSalle County4,218
- Rock Island County4,050
- Cook County3,863
- Kane County3,732
- Henry County3,637
- Will County3,603
- Whiteside County3,586
- Winnebago County3,555
- Lake County3,551
- Iroquois County3,543
- DeKalb County3,510
- Grundy County3,500
- Tazewell County3,486
- Ogle County3,473
- DuPage County3,440
- Fulton County3,438
- Kendall County3,437
- McLean County3,430
- Sangamon County3,412
- Lee County3,379
- Jackson County3,367
- Bureau County3,367
- Mercer County3,361
- Madison County3,356
- Kankakee County3,347
- Hancock County3,346
- Saint Clair County3,340
- Livingston County3,329
- Alexander County3,318
- White County3,309
- Henderson County3,291
- Wabash County3,283
- Champaign County3,267
- Mason County3,247
- Union County3,243
- Peoria County3,237
- McHenry County3,210
- Woodford County3,209
- Pope County3,208
- Logan County3,206
62 more counties
- Gallatin County3,191
- Jo Daviess County3,189
- Crawford County3,173
- Pike County3,166
- Pulaski County3,164
- Massac County3,162
- Boone County3,161
- Williamson County3,159
- Macon County3,157
- Wayne County3,154
- Vermilion County3,143
- Piatt County3,119
- Franklin County3,113
- Knox County3,112
- Carroll County3,111
- Lawrence County3,107
- McDonough County3,096
- Ford County3,083
- Christian County3,081
- Johnson County3,072
- Shelby County3,063
- Stephenson County3,050
- Morgan County3,034
- Warren County3,029
- Putnam County3,024
- Saline County3,001
- Calhoun County2,998
- Adams County2,994
- Jefferson County2,972
- Coles County2,966
- Hamilton County2,962
- Clay County2,960
- DeWitt County2,953
- Monroe County2,923
- Cass County2,922
- Edwards County2,909
- Edgar County2,903
- Perry County2,902
- Richland County2,900
- Jasper County2,899
- Clark County2,891
- Menard County2,889
- Marshall County2,886
- Fayette County2,873
- Clinton County2,860
- Jersey County2,829
- Douglas County2,827
- Macoupin County2,825
- Moultrie County2,824
- Hardin County2,811
- Randolph County2,804
- Effingham County2,778
- Montgomery County2,773
- Stark County2,750
- Schuyler County2,741
- Washington County2,720
- Cumberland County2,718
- Bond County2,713
- Marion County2,659
- Brown County2,620
- Greene County2,606
- Scott County2,598
The latest warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 11:03 AM CDT | Areal Flood Warning | LOT | Lee | 8 hr |
| Sep 21, 10:21 AM CDT | River Flood Warning | LOT | Lake | 5 days |
| Sep 20, 10:47 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 33 min |
| Sep 20, 10:27 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Shelby | 63 min |
| Sep 20, 7:39 PM CDT | Tornado Warning | ILX | Clay, Richland | 34 min |
| Sep 20, 7:27 PM CDT | Severe Thunderstorm Warning | ILX | Crawford, Lawrence | 33 min |
| Sep 20, 6:59 PM CDT | Tornado Warning | ILX | Clay, Effingham | 46 min |
| Sep 20, 6:03 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 48 min |
| Sep 20, 11:48 AM CDT | River Flood Warning | LSX | Calhoun | 21 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.