Alert archive / Illinois / Heat Advisories
Heat Advisories in Illinois, 2019
14 heat advisories in 2019. 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 2019. Tap one for its archive.
- Heat Advisories
- 14
- Busiest month
- July5 heat advisories
- Busiest day
- July 10, 20193 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 21, 3:35 PM CDT | Heat Advisory | LSX | Madison, Saint Clair | 19 hr |
| Jun 29, 1:18 PM CDT | Heat Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more | 8 hr |
| Jun 30, 3:18 AM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 18 hr |
| Jul 9, 1:32 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 29 hr |
| Jul 10, 2:26 AM CDT | Heat Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 17 hr |
| Jul 10, 3:50 AM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 15 hr |
| Jul 10, 4:06 AM CDT | Heat Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 3 more | 10 hr |
| Jul 17, 2:56 AM CDT | Heat Advisory | LOT | Boone, Lake, McHenry, Ogle, Winnebago | 48 hr |
| Aug 11, 3:05 AM CDT | Heat Advisory | PAH | Alexander, Franklin, Jackson, Jefferson, Johnson, Massac and 4 more | 41 hr |
| Aug 11, 3:43 AM CDT | Heat Advisory | LSX | Calhoun, Clinton, Greene, Jersey, Macoupin, Madison and 5 more | 41 hr |
| Aug 11, 3:06 PM CDT | Heat Advisory | ILX | Cass, Menard, Morgan, Sangamon, Scott | 28 hr |
| Aug 13, 2:20 AM CDT | Heat Advisory | PAH | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 16 hr |
| Aug 19, 10:01 AM CDT | Heat Advisory | LSX | Madison, Saint Clair | 10 hr |
| Sep 10, 3:12 AM CDT | Heat Advisory | LSX | Madison, Monroe, Saint Clair | 64 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Madison County5
- Saint Clair County5
- Bureau County3
- Hancock County3
- Henderson County3
- Henry County3
- McDonough County3
- Mercer County3
- Putnam County3
- Rock Island County3
- Warren County3
- Monroe County3
- Alexander County3
- Johnson County3
- Massac County3
- Pulaski County3
- Union County3
- Whiteside County2
- Calhoun County2
- Clinton County2
- Greene County2
- Jersey County2
- Macoupin County2
- Pike County2
- Randolph County2
- Washington County2
- Franklin County2
- Hardin County2
- Jackson County2
- Jefferson County2
- Perry County2
- Pope County2
- Williamson County2
- Cass County2
- Menard County2
- Morgan County2
- Sangamon County2
- Scott County2
- Carroll County1
- Jo Daviess County1
49 more counties
- Stephenson County1
- Adams County1
- Bond County1
- Brown County1
- Fayette County1
- Marion County1
- Montgomery County1
- Edwards County1
- Gallatin County1
- Hamilton County1
- Saline County1
- Wabash County1
- Wayne County1
- White County1
- Champaign County1
- Christian County1
- Clark County1
- Clay County1
- Coles County1
- Crawford County1
- Cumberland County1
- DeWitt County1
- Douglas County1
- Edgar County1
- Effingham County1
- Fulton County1
- Jasper County1
- Knox County1
- Lawrence County1
- Logan County1
- McLean County1
- Macon County1
- Marshall County1
- Mason County1
- Moultrie County1
- Peoria County1
- Piatt County1
- Richland County1
- Schuyler County1
- Shelby County1
- Stark County1
- Tazewell County1
- Vermilion County1
- Woodford County1
- Boone County1
- Lake County1
- McHenry County1
- Ogle County1
- Winnebago County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.