Alert archive / Illinois / Mesoscale Discussions / 2003

Mesoscale Discussions in Illinois, April 2003

23 mesoscale discussions in April 2003. 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 April 2003. Tap one for its archive.

Mesoscale Discussions
23
Busiest day
April 4, 20037 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
Apr 4, 7:23 AM CSTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 55 more97 min
Apr 4, 9:47 AM CSTMesoscale DiscussionSPCClark, Coles, Crawford, Cumberland, Douglas, Edgar and 9 more58 min
Apr 4, 11:10 AM CSTMesoscale DiscussionSPCBond, Calhoun, Cass, Champaign, Christian, Clinton and 24 more95 min
Apr 4, 1:12 PM CSTMesoscale DiscussionSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 35 more93 min
Apr 4, 1:29 PM CSTMesoscale DiscussionSPCBureau, Cook, DeKalb, DuPage, Grundy, Kane and 8 more91 min
Apr 4, 3:10 PM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Coles, Cumberland and 25 more2 hr
Apr 4, 5:11 PM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 24 more2 hr
Apr 4, 6:01 PM CSTMesoscale DiscussionSPCClark59 min
Apr 4, 7:07 PM CSTMesoscale DiscussionSPCAlexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 18 more83 min
Apr 16, 6:20 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clinton, Franklin, Jackson, Jefferson and 10 more115 min
Apr 19, 12:15 PM CDTMesoscale DiscussionSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 11 more3 hr
Apr 20, 1:25 AM CDTMesoscale DiscussionSPCClinton, Jackson, Monroe, Perry, Randolph, Saint Clair and 1 more2 hr
Apr 20, 4:00 AM CDTMesoscale DiscussionSPCJackson, Monroe, Perry, Randolph, Washington2 hr
Apr 20, 11:52 AM CDTMesoscale DiscussionSPCAlexander, Clark, Clay, Coles, Crawford, Cumberland and 23 more2 hr
Apr 20, 1:00 PM CDTMesoscale DiscussionSPCGallatin, Hardin, Johnson, Massac, Pope, Pulaski and 1 more3 hr
Apr 25, 6:29 PM CDTMesoscale DiscussionSPCGallatin, Hardin, Pope, Saline, White91 min
Apr 28, 1:13 PM CDTMesoscale DiscussionSPCClay, Crawford, Edwards, Effingham, Fayette, Franklin and 18 more2 hr
Apr 28, 3:56 PM CDTMesoscale DiscussionSPCAlexander, Jackson, Monroe, Perry, Randolph, Saint Clair and 2 more2 hr
Apr 29, 12:32 PM CDTMesoscale DiscussionSPCAlexander, Hardin, Jackson, Johnson, Massac, Pope and 4 more118 min
Apr 29, 5:11 PM CDTMesoscale DiscussionSPCAlexander, Jackson, Monroe, Perry, Pulaski, Randolph and 2 more2 hr
Apr 30, 11:04 AM CDTMesoscale DiscussionSPCBoone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 10 more116 min
Apr 30, 12:22 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Champaign, Christian, Coles and 37 more113 min
Apr 30, 3:24 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Cass, Champaign, DeWitt and 32 more2 hr

By county

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

62 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20022004

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.