Alert archive / Illinois / Heat Advisories
Heat Advisories in Illinois, 2023
18 heat advisories in 2023. 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Heat Advisories
- 18
- Busiest month
- July8 heat advisories
- Busiest day
- July 25, 20234 heat advisories
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 |
|---|---|---|---|---|
| Jun 25, 9:37 AM CDT | Heat Advisory | PAH | Alexander, Jackson, Johnson, Massac, Pope, Pulaski and 3 more | 9 hr |
| Jun 28, 2:49 AM CDT | Heat Advisory | ILX | Clay, Lawrence, Richland | 23 hr |
| Jun 28, 3:02 AM CDT | Heat Advisory | LSX | Bond, Calhoun, Clinton, Jersey, Madison, Marion and 4 more | 64 hr |
| Jun 28, 3:11 AM CDT | Heat Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 65 hr |
| Jun 29, 11:06 AM CDT | Heat Advisory | PAH | Edwards, Wabash | 33 hr |
| Jul 1, 8:53 AM CDT | Heat Advisory | PAH | Alexander, Jackson, Massac, Pulaski, Union | 10 hr |
| Jul 25, 1:09 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 4 days |
| Jul 25, 1:54 PM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 3 days |
| Jul 25, 2:21 PM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 37 hr |
| Jul 25, 2:35 PM CDT | Heat Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 3 days |
| Jul 26, 3:50 AM CDT | Heat Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 11 more | 65 hr |
| Jul 27, 3:06 AM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 22 more | 64 hr |
| Jul 27, 3:12 AM CDT | Heat Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 64 hr |
| Aug 5, 4:03 AM CDT | Heat Advisory | PAH | Alexander, Jackson, Johnson, Massac, Pulaski, Union and 1 more | 14 hr |
| Aug 19, 2:47 AM CDT | Heat Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 11 more | 41 hr |
| Aug 19, 3:01 AM CDT | Heat Advisory | DVN | Bureau, Carroll, Henry, Jo Daviess, Putnam, Rock Island and 2 more | 41 hr |
| Aug 20, 4:12 PM CDT | Heat Advisory | LOT | Boone, DeKalb, Ford, Grundy, Iroquois, Kane and 8 more | 52 hr |
| Aug 25, 7:49 PM CDT | Heat Advisory | PAH | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jefferson and 4 more | 19 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Alexander County6
- Jackson County6
- Massac County6
- Pulaski County6
- Union County6
- Johnson County5
- Saline County5
- Williamson County5
- Edwards County5
- Wabash County5
- Pope County4
- Franklin County4
- Gallatin County4
- Hamilton County4
- Hardin County4
- Jefferson County4
- Wayne County4
- White County4
- Clay County3
- Lawrence County3
- Richland County3
- Perry County3
- Boone County3
- DeKalb County3
- Ford County3
- Grundy County3
- Iroquois County3
- Kane County3
- Kankakee County3
- Kendall County3
- LaSalle County3
- Lee County3
- Livingston County3
- Ogle County3
- Will County3
- Winnebago County3
- Bond County2
- Calhoun County2
- Clinton County2
- Jersey County2
61 more counties
- Madison County2
- Marion County2
- Monroe County2
- Randolph County2
- Saint Clair County2
- Washington County2
- Bureau County2
- Carroll County2
- Henry County2
- Jo Daviess County2
- Putnam County2
- Rock Island County2
- Stephenson County2
- Whiteside County2
- Cass County2
- Champaign County2
- Christian County2
- Clark County2
- Coles County2
- Crawford County2
- Cumberland County2
- DeWitt County2
- Douglas County2
- Edgar County2
- Effingham County2
- Fulton County2
- Jasper County2
- Logan County2
- Macon County2
- Mason County2
- Menard County2
- Morgan County2
- Moultrie County2
- Piatt County2
- Sangamon County2
- Schuyler County2
- Scott County2
- Shelby County2
- Vermilion County2
- Cook County2
- DuPage County2
- McHenry County2
- Adams County1
- Brown County1
- Fayette County1
- Greene County1
- Macoupin County1
- Montgomery County1
- Pike County1
- Hancock County1
- Henderson County1
- McDonough County1
- Mercer County1
- Warren County1
- Knox County1
- McLean County1
- Marshall County1
- Peoria County1
- Stark County1
- Tazewell County1
- Woodford County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.