Alert archive / Illinois / Mesoscale Discussions / 2018

Mesoscale Discussions in Illinois, June 2018

40 mesoscale discussions in June 2018. 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 June 2018. Tap one for its archive.

Mesoscale Discussions
40
Busiest day
June 10, 20187 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
May 31, 7:37 PM CDTMesoscale DiscussionSPCAlexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more113 min
Jun 2, 9:12 AM CDTMesoscale DiscussionSPCClinton, Franklin, Jackson, Jefferson, Monroe, Perry and 5 more2 hr
Jun 2, 3:42 PM CDTMesoscale DiscussionSPCAlexander, Pulaski2 hr
Jun 2, 6:55 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Crawford, Cumberland, DeWitt and 15 more2 hr
Jun 9, 11:09 AM CDTMesoscale DiscussionSPCBond, Christian, Clark, Clay, Clinton, Coles and 19 more2 hr
Jun 9, 6:30 PM CDTMesoscale DiscussionSPCBureau, Carroll, DeKalb, Henry, Jo Daviess, Knox and 12 more2 hr
Jun 9, 10:17 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Henry, Jo Daviess, LaSalle and 8 more118 min
Jun 9, 11:44 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Henry, Jo Daviess, LaSalle and 8 more2 hr
Jun 10, 10:04 AM CDTMesoscale DiscussionSPCBond, Cass, Champaign, Christian, Clark, Clay and 43 more116 min
Jun 10, 12:17 PM CDTMesoscale DiscussionSPCBond, Brown, Cass, Christian, Clark, Clay and 34 more118 min
Jun 10, 2:42 PM CDTMesoscale DiscussionSPCChampaign, Christian, Clark, Clay, Coles, Crawford and 20 more93 min
Jun 10, 4:30 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Jersey, Macoupin and 3 more90 min
Jun 10, 5:20 PM CDTMesoscale DiscussionSPCEdwards, Lawrence, Wabash, Wayne, White85 min
Jun 10, 7:01 PM CDTMesoscale DiscussionSPCBond, Calhoun, Cass, Christian, Clay, Clinton and 38 more59 min
Jun 11, 4:53 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 35 more2 hr
Jun 12, 1:26 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more109 min
Jun 13, 3:14 PM CDTMesoscale DiscussionSPCClark, Crawford, Edwards, Jasper, Lawrence, Richland and 1 more2 hr
Jun 14, 1:17 PM CDTMesoscale DiscussionSPCAdams, Brown, Fulton, Hancock, Henderson, McDonough and 3 more118 min
Jun 14, 5:18 PM CDTMesoscale DiscussionSPCMadison, Monroe, Saint Clair57 min
Jun 14, 8:38 PM CDTMesoscale DiscussionSPCAlexander, Pulaski, Union97 min
Jun 19, 12:37 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Champaign, DeWitt, Ford and 28 more113 min
Jun 20, 5:13 PM CDTMesoscale DiscussionSPCMercer, Rock Island2 hr
Jun 21, 12:31 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 6 more2 hr
Jun 21, 1:53 PM CDTMesoscale DiscussionSPCHenry, Knox, Marshall, Peoria, Rock Island, Stark and 2 more3 hr
Jun 21, 3:56 PM CDTMesoscale DiscussionSPCAlexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more2 hr
Jun 21, 5:44 PM CDTMesoscale DiscussionSPCMassac2 hr
Jun 23, 4:50 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 6 more115 min
Jun 25, 3:23 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clinton, Franklin, Hamilton, Jackson and 12 more97 min
Jun 25, 8:08 PM CDTMesoscale DiscussionSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 19 more2 hr
Jun 26, 2:19 AM CDTMesoscale DiscussionSPCMonroe116 min
Jun 26, 7:39 AM CDTMesoscale DiscussionSPCAlexander, Bond, Christian, Clark, Clay, Clinton and 39 more2 hr
Jun 26, 1:31 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Jo Daviess, Kane and 5 more89 min
Jun 26, 1:53 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Jackson, Johnson, Perry, Pulaski and 3 more67 min
Jun 26, 7:41 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hardin, Johnson, Massac and 5 more2 hr
Jun 27, 1:42 PM CDTMesoscale DiscussionSPCMassac, Pulaski93 min
Jun 28, 2:00 AM CDTMesoscale DiscussionSPCAlexander, Bond, Calhoun, Clinton, Franklin, Gallatin and 20 more3 hr
Jun 28, 8:43 AM CDTMesoscale DiscussionSPCAlexander, Bond, Calhoun, Clinton, Edwards, Franklin and 24 more62 min
Jun 28, 10:57 AM CDTMesoscale DiscussionSPCAdams, Brown, Hancock, Pike, Scott2 hr
Jun 28, 3:34 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 47 more116 min
Jun 28, 7:30 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 16 more90 min

By county

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

56 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20172019

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.