Weather alerts in Illinois, 2023
2,852 weather alerts in 2023, 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 in 2023. Tap one for its archive.
- Alerts
- 2,852
- Warnings
- 1,434
- Watches
- 179
- Advisories
- 454
- Busiest month
- July673 alerts
- Busiest day
- May 7, 2023132 alerts
Over time
By month
The alerts
2,852 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
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.
- Cook County182
- Alexander County180
- Massac County179
- Pulaski County179
- Williamson County173
- Franklin County165
- Rock Island County164
- Henry County160
- Pope County159
- Jackson County159
- Sangamon County158
- Union County156
- White County156
- Johnson County155
- Saline County154
- Gallatin County153
- Bureau County150
- Hamilton County146
- Christian County146
- Whiteside County145
- Hancock County140
- Fulton County139
- Will County136
- Jo Daviess County135
- LaSalle County135
- Wayne County135
- Tazewell County134
- Saint Clair County133
- Carroll County130
- Wabash County129
- Shelby County129
- Hardin County127
- Henderson County127
- McLean County127
- DuPage County127
- Edwards County127
- Kane County126
- Madison County125
- Jefferson County124
- Peoria County123
62 more counties
- Morgan County123
- McDonough County122
- Perry County120
- Stephenson County119
- Mason County119
- DeKalb County118
- Lee County118
- Clay County118
- Macon County118
- Warren County117
- Cass County117
- Schuyler County117
- Logan County116
- Richland County116
- Lake County116
- Mercer County115
- Winnebago County115
- Clinton County115
- Kendall County114
- Monroe County114
- Montgomery County112
- Ogle County111
- Knox County110
- Woodford County110
- Jasper County110
- Putnam County109
- Grundy County109
- McHenry County108
- Coles County108
- Randolph County107
- Clark County107
- Moultrie County107
- Effingham County106
- Piatt County106
- Pike County105
- Washington County105
- Crawford County105
- Livingston County104
- Bond County104
- Champaign County103
- DeWitt County103
- Edgar County103
- Boone County102
- Lawrence County102
- Calhoun County100
- Cumberland County100
- Douglas County100
- Menard County100
- Kankakee County99
- Macoupin County99
- Marion County99
- Iroquois County98
- Jersey County98
- Vermilion County98
- Scott County97
- Fayette County96
- Stark County95
- Adams County95
- Ford County91
- Greene County88
- Brown County87
- Marshall County84
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.