Alert archive / Illinois / Heat Advisories / 2023
Heat Advisories in Illinois, August 2023
5 heat advisories in August 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 August 2023. Tap one for its archive.
- Heat Advisories
- 5
- Busiest day
- August 19, 20232 heat advisories
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| 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.
- Boone County2
- DeKalb County2
- Ford County2
- Grundy County2
- Iroquois County2
- Kane County2
- Kankakee County2
- Kendall County2
- LaSalle County2
- Lee County2
- Livingston County2
- Ogle County2
- Will County2
- Winnebago County2
- Alexander County1
- Jackson County1
- Johnson County1
- Massac County1
- Pulaski County1
- Union County1
- Williamson County1
- Cook County1
- DuPage County1
- McHenry County1
- Bureau County1
- Carroll County1
- Henry County1
- Jo Daviess County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Whiteside County1
- Edwards County1
- Franklin County1
- Gallatin County1
- Hamilton County1
- Hardin County1
- Jefferson County1
- Saline County1
- Wabash County1
2 more counties
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.