Alert archive / Illinois / Mesoscale Discussions / 2004

Mesoscale Discussions in Illinois, May 2004

86 mesoscale discussions in May 2004. 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 May 2004. Tap one for its archive.

Mesoscale Discussions
86
Busiest day
May 27, 200411 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 1, 12:59 AM CDTMesoscale DiscussionSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 18 more91 min
May 1, 12:36 PM CDTMesoscale DiscussionSPCGallatin, Hardin114 min
May 2, 9:49 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 10 more116 min
May 6, 11:53 PM CDTMesoscale DiscussionSPCBureau, Carroll, DeKalb, Henry, Jo Daviess, Knox and 10 more97 min
May 7, 4:24 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 22 more96 min
May 7, 6:38 AM CDTMesoscale DiscussionSPCBureau, Champaign, DeWitt, Ford, Grundy, Iroquois and 12 more97 min
May 7, 11:44 AM CDTMesoscale DiscussionSPCBureau, Carroll, DeKalb, DuPage, Grundy, Henry and 9 more2 hr
May 7, 4:33 PM CDTMesoscale DiscussionSPCBoone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 9 more87 min
May 7, 8:20 PM CDTMesoscale DiscussionSPCBoone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 6 more85 min
May 8, 4:00 PM CDTMesoscale DiscussionSPCCook, DuPage, Lake, McHenry3 hr
May 8, 9:55 PM CDTMesoscale DiscussionSPCBoone, Cook, Lake, McHenry, Stephenson, Winnebago2 hr
May 9, 1:22 AM CDTMesoscale DiscussionSPCHancock23 min
May 9, 11:48 AM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Lake and 4 more2 hr
May 9, 2:46 PM CDTMesoscale DiscussionSPCCook, Lake89 min
May 9, 4:46 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Grundy, Henry and 10 more59 min
May 9, 5:17 PM CDTMesoscale DiscussionSPCCook, DuPage, Lake, Will88 min
May 9, 9:04 PM CDTMesoscale DiscussionSPCKankakee56 min
May 10, 11:05 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 19 more115 min
May 10, 6:05 PM CDTMesoscale DiscussionSPCCook, DeWitt, DuPage, Ford, Grundy, Iroquois and 5 more115 min
May 17, 10:22 AM CDTMesoscale DiscussionSPCCook, Ford, Iroquois, Kankakee, Will2 hr
May 17, 12:41 PM CDTMesoscale DiscussionSPCJo Daviess, Stephenson, Winnebago3 hr
May 17, 6:44 PM CDTMesoscale DiscussionSPCBoone, Jo Daviess, McHenry, Stephenson, Winnebago61 min
May 17, 11:37 PM CDTMesoscale DiscussionSPCBureau, Cook, DeKalb, DuPage, Grundy, Kane and 8 more23 min
May 18, 12:41 AM CDTMesoscale DiscussionSPCGrundy, Kankakee, Will2 hr
May 18, 10:26 AM CDTMesoscale DiscussionSPCBond, Brown, Bureau, Calhoun, Cass, Champaign and 38 more3 hr
May 18, 2:38 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 23 more2 hr
May 18, 6:09 PM CDTMesoscale DiscussionSPCCass, Champaign, Christian, Clark, Clay, Coles and 27 more96 min
May 19, 11:26 AM CDTMesoscale DiscussionSPCGallatin, Hardin, Wabash, White2 hr
May 20, 11:31 AM CDTMesoscale DiscussionSPCHenderson, Henry, Jo Daviess, Knox, Mercer, Rock Island and 1 more2 hr
May 20, 7:32 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 21 more88 min
May 21, 4:34 AM CDTMesoscale DiscussionSPCJo Daviess56 min
May 21, 9:40 AM CDTMesoscale DiscussionSPCCook, DuPage, Kane, Kankakee, Lake, Will2 hr
May 21, 7:37 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 19 more83 min
May 22, 2:41 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 23 more94 min
May 22, 6:58 AM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Fulton, Hancock, Henderson and 13 more62 min
May 22, 11:03 AM CDTMesoscale DiscussionSPCDeWitt, Ford, Grundy, Iroquois, Kankakee, LaSalle and 9 more57 min
May 22, 5:52 PM CDTMesoscale DiscussionSPCBureau, Carroll, DeKalb, Grundy, Henry, Jo Daviess and 12 more113 min
May 22, 8:58 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 23 more92 min
May 23, 12:24 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 32 more66 min
May 23, 1:21 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Jersey and 6 more24 min
May 23, 4:30 AM CDTMesoscale DiscussionSPCAdams, Boone, Brown, Bureau, Carroll, Cass and 44 more60 min
May 23, 12:25 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 31 more95 min
May 23, 12:45 PM CDTMesoscale DiscussionSPCClark, Clay, Coles, Crawford, Cumberland, Edgar and 18 more2 hr
May 23, 2:53 PM CDTMesoscale DiscussionSPCIroquois, Vermilion67 min
May 23, 5:00 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 28 more2 hr
May 23, 5:10 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 17 more95 min
May 23, 6:30 PM CDTMesoscale DiscussionSPCCook, DuPage, Iroquois, Kankakee, Vermilion, Will2 hr
May 23, 8:40 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clark, Clay, Clinton and 31 more65 min
May 24, 1:54 PM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more96 min
May 24, 5:26 PM CDTMesoscale DiscussionSPCAdams, Brown, Hancock, Henderson, McDonough, Pike and 2 more94 min
May 24, 8:15 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Hancock, Henderson, McDonough and 3 more90 min
May 24, 10:26 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 36 more64 min
May 24, 11:45 PM CDTMesoscale DiscussionSPCBond, Calhoun, Cass, Champaign, Christian, Clark and 24 more90 min
May 25, 9:19 AM CDTMesoscale DiscussionSPCEdwards, Gallatin, Hamilton, Hardin, Lawrence, Pope and 4 more86 min
May 25, 2:39 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more96 min
May 25, 3:16 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clinton, Fayette, Greene and 12 more89 min
May 25, 5:03 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Crawford, Edwards and 25 more87 min
May 25, 6:04 PM CDTMesoscale DiscussionSPCBond, Clinton, Madison, Monroe, Perry, Randolph and 2 more56 min
May 25, 7:28 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 17 more92 min
May 26, 8:20 AM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clark, Clay, Clinton and 31 more85 min
May 26, 10:50 AM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Crawford, Edwards and 28 more85 min
May 26, 3:32 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Jackson and 13 more88 min
May 26, 5:10 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 29 more65 min
May 26, 5:57 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Hamilton, Jackson, Jefferson, Johnson and 10 more93 min
May 26, 7:57 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more63 min
May 26, 9:36 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 25 more54 min
May 26, 11:14 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 17 more2 hr
May 27, 1:53 AM CDTMesoscale DiscussionSPCChristian, Clark, Clay, Coles, Crawford, Cumberland and 9 more3 hr
May 27, 11:10 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Christian, DeWitt and 25 more2 hr
May 27, 1:07 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, DeWitt, Douglas, Edgar and 12 more113 min
May 27, 1:52 PM CDTMesoscale DiscussionSPCAdams, Calhoun, Greene, Jersey, Macoupin, Pike and 1 more113 min
May 27, 3:12 PM CDTMesoscale DiscussionSPCChampaign, Christian, Clark, Coles, Cumberland, DeWitt and 13 more2 hr
May 27, 3:37 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clay, Clinton, Edwards, Effingham and 22 more113 min
May 27, 5:01 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clinton, Fayette, Greene, Jackson and 11 more89 min
May 27, 6:00 PM CDTMesoscale DiscussionSPCChampaign, DeWitt, Douglas, Edgar, Macon, Morgan and 4 more90 min
May 27, 7:12 PM CDTMesoscale DiscussionSPCAlexander, Clay, Clinton, Edwards, Franklin, Gallatin and 22 more93 min
May 27, 10:27 PM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 3 more93 min
May 30, 9:40 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Hancock and 6 more3 hr
May 30, 10:04 AM CDTMesoscale DiscussionSPCAlexander, Clay, Clinton, Edwards, Franklin, Gallatin and 19 more2 hr
May 30, 11:04 AM CDTMesoscale DiscussionSPCChampaign, Cook, DeWitt, Douglas, DuPage, Iroquois and 4 more116 min
May 30, 12:13 PM CDTMesoscale DiscussionSPCCarroll, Hancock, Henderson, Henry, Jo Daviess, Knox and 4 more2 hr
May 30, 12:53 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Christian, Fulton and 13 more2 hr
May 30, 3:16 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cass, DeKalb, DuPage and 29 more119 min
May 30, 5:10 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clinton, Fayette, Jackson, Madison and 7 more95 min
May 30, 5:36 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 39 more54 min
May 30, 8:39 PM CDTMesoscale DiscussionSPCHardin96 min

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 archive20032005

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.