Alert archive / Illinois / Mesoscale Discussions / 2020

Mesoscale Discussions in Illinois, July 2020

22 mesoscale discussions in July 2020. 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 mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

Each county as a circle sized by its count in July 2020. Tap one for its archive.

Mesoscale Discussions
22
Busiest day
July 9, 20203 mesoscale discussions

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.

IssuedProductOfficeCountiesLasted
Jul 7, 1:23 PM CDTMesoscale DiscussionSPCJo Daviess2 hr
Jul 9, 10:24 AM CDTMesoscale DiscussionSPCMercer, Rock Island3 hr
Jul 9, 2:51 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 22 more114 min
Jul 9, 5:39 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 19 more96 min
Jul 11, 9:36 AM CDTMesoscale DiscussionSPCCass, Fulton, Henderson, Henry, Knox, Logan and 11 more114 min
Jul 11, 7:17 PM CDTMesoscale DiscussionSPCBureau, Champaign, DeWitt, Douglas, Edgar, Ford and 27 more58 min
Jul 11, 10:42 PM CDTMesoscale DiscussionSPCClark, Coles, Crawford, Cumberland, Edgar, Vermilion93 min
Jul 15, 1:10 PM CDTMesoscale DiscussionSPCBond, Calhoun, Cass, Christian, Clinton, Fayette and 17 more2 hr
Jul 15, 2:13 PM CDTMesoscale DiscussionSPCBrown, Fulton, Livingston, McDonough, McLean, Marshall and 5 more62 min
Jul 15, 5:35 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 35 more85 min
Jul 15, 8:22 PM CDTMesoscale DiscussionSPCJackson, Johnson, Massac, Pope, Pulaski, Saline and 2 more53 min
Jul 18, 11:00 AM CDTMesoscale DiscussionSPCBoone, DeKalb, Jo Daviess, McHenry, Ogle, Stephenson and 1 more2 hr
Jul 19, 10:12 AM CDTMesoscale DiscussionSPCBureau, Cook, DeKalb, DuPage, Ford, Grundy and 14 more93 min
Jul 19, 12:19 PM CDTMesoscale DiscussionSPCFord, Iroquois86 min
Jul 19, 3:00 PM CDTMesoscale DiscussionSPCCalhoun2 hr
Jul 20, 12:42 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 6 more2 hr
Jul 21, 11:19 AM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Cumberland, DeWitt, Douglas and 12 more86 min
Jul 21, 1:43 PM CDTMesoscale DiscussionSPCBond, Calhoun, Cass, Christian, Clinton, Coles and 17 more92 min
Jul 21, 5:04 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 24 more56 min
Jul 22, 11:54 AM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more2 hr
Jul 26, 5:33 PM CDTMesoscale DiscussionSPCBoone, Carroll, DeKalb, Henry, Jo Daviess, Lee and 7 more87 min
Jul 27, 12:14 PM CDTMesoscale DiscussionSPCBond, Champaign, Clark, Clay, Clinton, Coles and 25 more91 min

By county

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

60 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.