Alert archive / Illinois / Excessive Heat Watches

Excessive Heat Watches in Illinois, 2011

11 excessive heat watches in 2011. 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 2011. Tap one for its archive.

Excessive Heat Watches
11
Busiest month
July10 excessive heat watches
Busiest day
July 14, 20113 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.

IssuedProductOfficeCountiesLasted
Jun 29, 3:18 PM CDTExcessive Heat WatchDVNBureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more13 hr
Jul 10, 3:53 AM CDTExcessive Heat WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more10 hr
Jul 14, 2:46 PM CDTExcessive Heat WatchILXCass, Champaign, Christian, Clark, Clay, Coles and 29 more24 hr
Jul 14, 3:29 PM CDTExcessive Heat WatchLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more23 hr
Jul 14, 3:40 PM CDTExcessive Heat WatchDVNBureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more24 hr
Jul 16, 3:23 PM CDTExcessive Heat WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more67 hr
Jul 19, 2:26 AM CDTExcessive Heat WatchLOTBoone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more14 hr
Jul 21, 4:06 AM CDTExcessive Heat WatchLOTFord, Grundy, Iroquois, Kankakee, LaSalle, Livingston24 hr
Jul 22, 3:50 AM CDTExcessive Heat WatchLOTBoone, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more24 hr
Jul 24, 4:00 PM CDTExcessive Heat WatchLSXAdams, Bond, Brown, Clinton, Fayette, Greene and 5 more24 hr
Jul 29, 3:00 AM CDTExcessive Heat WatchLSXAdams, Brown, Greene, Macoupin, Montgomery, Pike37 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

60 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordThe radar archive20102012

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.