Alert archive / Illinois / Excessive Heat Watches
Excessive Heat Watches in Illinois, 2023
8 excessive heat watches 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 excessive heat watches reaches back to 2005.
Excessive Heat Watches by county
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Excessive Heat Watches
- 8
- Busiest month
- August7 excessive heat watches
- Busiest day
- August 18, 20234 excessive heat watches
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 27, 2:52 AM CDT | Excessive Heat Watch | PAH | Alexander, Franklin, Jackson, Johnson, Massac, Perry and 4 more | 24 hr |
| Aug 18, 2:47 AM CDT | Excessive Heat Watch | PAH | Alexander, Franklin, Jackson, Jefferson, Johnson, Perry and 3 more | 24 hr |
| Aug 18, 2:51 AM CDT | Excessive Heat Watch | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 25 hr |
| Aug 18, 2:55 AM CDT | Excessive Heat Watch | ILX | Cass, Christian, DeWitt, Fulton, Knox, Logan and 16 more | 24 hr |
| Aug 18, 2:58 AM CDT | Excessive Heat Watch | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 72 hr |
| Aug 19, 2:50 AM CDT | Excessive Heat Watch | PAH | Gallatin, Hardin, Massac, Pope | 35 hr |
| Aug 21, 2:46 AM CDT | Excessive Heat Watch | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 24 hr |
| Aug 21, 2:47 AM CDT | Excessive Heat Watch | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 48 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Alexander County2
- Franklin County2
- Jackson County2
- Johnson County2
- Massac County2
- Perry County2
- Pope County2
- Pulaski County2
- Union County2
- Williamson County2
- Bureau County2
- Carroll County2
- Hancock County2
- Henderson County2
- Henry County2
- Jo Daviess County2
- McDonough County2
- Mercer County2
- Putnam County2
- Rock Island County2
- Stephenson County2
- Warren County2
- Whiteside County2
- Jefferson County1
- Adams County1
- Bond County1
- Brown County1
- Calhoun County1
- Clinton County1
- Fayette County1
- Greene County1
- Jersey County1
- Macoupin County1
- Madison County1
- Marion County1
- Monroe County1
- Montgomery County1
- Pike County1
- Randolph County1
- Saint Clair County1
43 more counties
- Washington County1
- Cass County1
- Christian County1
- DeWitt County1
- Fulton County1
- Knox County1
- Logan County1
- McLean County1
- Macon County1
- Marshall County1
- Mason County1
- Menard County1
- Morgan County1
- Moultrie County1
- Peoria County1
- Piatt County1
- Sangamon County1
- Schuyler County1
- Scott County1
- Shelby County1
- Stark County1
- Tazewell County1
- Woodford County1
- Gallatin County1
- Hardin County1
- Boone County1
- Cook County1
- DeKalb County1
- DuPage County1
- Ford County1
- Grundy County1
- Iroquois County1
- Kane County1
- Kankakee County1
- Kendall County1
- Lake County1
- LaSalle County1
- Lee County1
- Livingston County1
- McHenry County1
- Ogle County1
- Will County1
- Winnebago 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.