Alert archive / Illinois / Mesoscale Discussions / 2003

Mesoscale Discussions in Illinois, August 2003

26 mesoscale discussions in August 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 August 2003. Tap one for its archive.

Mesoscale Discussions
26
Busiest day
August 26, 20035 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 31, 8:19 PM CDTMesoscale DiscussionSPCBoone, Carroll, Jo Daviess, Ogle, Stephenson, Winnebago116 min
Aug 1, 10:59 AM CDTMesoscale DiscussionSPCBureau, DeKalb, Ford, Fulton, Grundy, Henderson and 20 more2 hr
Aug 1, 2:58 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more2 hr
Aug 1, 5:49 PM CDTMesoscale DiscussionSPCBoone, Brown, Bureau, Cass, DeKalb, Fulton and 29 more86 min
Aug 1, 7:20 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Hamilton, Jackson, Jefferson, Johnson and 8 more85 min
Aug 2, 6:48 AM CDTMesoscale DiscussionSPCAlexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more57 min
Aug 2, 9:11 PM CDTMesoscale DiscussionSPCBond, Clay, Clinton, Coles, Cumberland, Effingham and 9 more94 min
Aug 3, 3:25 PM CDTMesoscale DiscussionSPCAlexander, Hardin, Jackson, Johnson, Massac, Pope and 3 more2 hr
Aug 3, 6:15 PM CDTMesoscale DiscussionSPCBureau, Champaign, Ford, Grundy, Henry, Iroquois and 10 more105 min
Aug 4, 1:43 PM CDTMesoscale DiscussionSPCAlexander, Massac, Pulaski2 hr
Aug 11, 12:52 PM CDTMesoscale DiscussionSPCGallatin, Hardin, Pope, Saline, Wabash, White83 min
Aug 16, 2:45 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Kendall and 7 more2 hr
Aug 16, 6:14 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Kendall and 6 more91 min
Aug 17, 1:48 PM CDTMesoscale DiscussionSPCClark, Clay, Crawford, Cumberland, Edwards, Effingham and 18 more117 min
Aug 20, 2:15 PM CDTMesoscale DiscussionSPCAdams, Hancock, Henderson, Mercer90 min
Aug 20, 5:27 PM CDTMesoscale DiscussionSPCCalhoun, Greene, Jersey, Monroe, Pike2 hr
Aug 20, 6:09 PM CDTMesoscale DiscussionSPCCarroll, Fulton, Hancock, Henderson, Henry, Jo Daviess and 8 more2 hr
Aug 25, 6:43 PM CDTMesoscale DiscussionSPCBoone, Lake, McHenry, Stephenson, Winnebago2 hr
Aug 25, 7:03 PM CDTMesoscale DiscussionSPCMercer, Rock Island87 min
Aug 26, 12:21 AM CDTMesoscale DiscussionSPCBoone, Jo Daviess, Lake, McHenry, Stephenson, Winnebago84 min
Aug 26, 11:15 AM CDTMesoscale DiscussionSPCBureau, Champaign, Ford, Grundy, Henry, Iroquois and 11 more3 hr
Aug 26, 2:19 PM CDTMesoscale DiscussionSPCHancock, Henderson, McDonough116 min
Aug 26, 4:45 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, DeWitt, Fulton, Hancock and 14 more90 min
Aug 28, 3:03 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Carroll, Cass, Fulton and 17 more117 min
Aug 28, 5:40 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Hancock, Henderson, McDonough and 3 more65 min
Aug 31, 5:11 PM CDTMesoscale DiscussionSPCBond, Clark, Clay, Clinton, Coles, Crawford and 13 more2 hr

By county

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

53 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. Rebuilt daily.