Alert archive / Illinois / Mesoscale Discussions / 2014

Mesoscale Discussions in Illinois, May 2014

33 mesoscale discussions in May 2014. 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 2014. Tap one for its archive.

Mesoscale Discussions
33
Busiest day
May 21, 20149 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 8, 5:54 PM CDTMesoscale DiscussionSPCBoone, Bureau, Cass, DeKalb, Fulton, Henry and 18 more2 hr
May 9, 11:46 AM CDTMesoscale DiscussionSPCBond, Christian, Clark, Clay, Clinton, Coles and 30 more59 min
May 9, 2:35 PM CDTMesoscale DiscussionSPCAlexander, Clark, Clay, Clinton, Coles, Crawford and 30 more115 min
May 9, 6:25 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clark, Clinton, Coles, Crawford and 24 more65 min
May 10, 12:44 PM CDTMesoscale DiscussionSPCGallatin, Hardin, Wabash2 hr
May 10, 4:56 PM CDTMesoscale DiscussionSPCCalhoun, Jersey, Monroe, Saint Clair64 min
May 10, 7:55 PM CDTMesoscale DiscussionSPCCalhoun, Greene, Jersey, Macoupin, Madison, Monroe and 2 more95 min
May 10, 10:22 PM CDTMesoscale DiscussionSPCCalhoun, Jersey, Madison, Monroe, Randolph, Saint Clair83 min
May 11, 9:16 AM CDTMesoscale DiscussionSPCMercer, Rock Island89 min
May 11, 10:47 AM CDTMesoscale DiscussionSPCHancock118 min
May 11, 12:51 PM CDTMesoscale DiscussionSPCCarroll, Henderson, Jo Daviess, Mercer, Rock Island, Whiteside54 min
May 11, 2:36 PM CDTMesoscale DiscussionSPCMercer84 min
May 11, 5:09 PM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 21 more66 min
May 11, 5:49 PM CDTMesoscale DiscussionSPCClark, Coles, Edgar56 min
May 11, 8:32 PM CDTMesoscale DiscussionSPCDeWitt, Ford, Iroquois, Livingston, McLean58 min
May 12, 9:51 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 13 more84 min
May 12, 11:54 AM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Carroll, Fulton, Hancock and 16 more2 hr
May 12, 1:06 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Lake and 6 more54 min
May 12, 3:21 PM CDTMesoscale DiscussionSPCAdams, Hancock, Henderson, Jo Daviess, McDonough, Mercer and 2 more54 min
May 12, 6:56 PM CDTMesoscale DiscussionSPCBoone, Jo Daviess, Lake, McHenry, Stephenson, Winnebago64 min
May 12, 7:26 PM CDTMesoscale DiscussionSPCAdams, Hancock, Henderson, Jo Daviess, McDonough, Mercer and 2 more64 min
May 20, 2:55 PM CDTMesoscale DiscussionSPCBoone, Carroll, Jo Daviess, McHenry, Stephenson, Winnebago2 hr
May 20, 5:49 PM CDTMesoscale DiscussionSPCBoone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 10 more86 min
May 20, 8:06 PM CDTMesoscale DiscussionSPCDeKalb, DuPage, Grundy, Kane, Kankakee, Kendall and 1 more84 min
May 20, 9:56 PM CDTMesoscale DiscussionSPCCarroll, DeKalb, DuPage, Jo Daviess, Kane, Kendall and 4 more94 min
May 20, 11:23 PM CDTMesoscale DiscussionSPCCook, Lake97 min
May 21, 1:27 AM CDTMesoscale DiscussionSPCBureau, Carroll, Cook, DeKalb, DuPage, Grundy and 17 more93 min
May 21, 11:54 AM CDTMesoscale DiscussionSPCIroquois, Vermilion3 hr
May 21, 1:40 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Champaign, Christian, Clark and 27 more2 hr
May 21, 3:12 PM CDTMesoscale DiscussionSPCBond, Calhoun, Champaign, Christian, Clark, Clay and 44 more2 hr
May 21, 5:03 PM CDTMesoscale DiscussionSPCEdwards, Franklin, Hamilton, Jefferson, Wabash, Washington and 2 more87 min
May 21, 6:50 PM CDTMesoscale DiscussionSPCChampaign, Clark, Douglas, Edgar, Vermilion85 min
May 21, 11:39 PM CDTMesoscale DiscussionSPCClark, Coles, Crawford, Cumberland, Douglas, Edgar96 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 archive20132015

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.