Alert archive / Illinois / Mesoscale Discussions / 2015

Mesoscale Discussions in Illinois, April 2015

25 mesoscale discussions in April 2015. 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 2015. Tap one for its archive.

Mesoscale Discussions
25
Busiest day
April 8, 20155 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 2, 11:50 AM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more85 min
Apr 2, 2:46 PM CDTMesoscale DiscussionSPCBond, Clay, Clinton, Cumberland, Effingham, Fayette and 15 more89 min
Apr 2, 7:32 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 17 more58 min
Apr 3, 3:39 AM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 3 more66 min
Apr 3, 11:56 AM CDTMesoscale DiscussionSPCGallatin, Hardin, Johnson, Massac, Pope, Pulaski and 1 more94 min
Apr 7, 8:17 AM CDTMesoscale DiscussionSPCBond, Clinton, Franklin, Hamilton, Jackson, Jefferson and 11 more88 min
Apr 7, 10:51 AM CDTMesoscale DiscussionSPCFranklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 11 more54 min
Apr 7, 1:14 PM CDTMesoscale DiscussionSPCEdwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 7 more61 min
Apr 7, 2:53 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more97 min
Apr 8, 7:41 AM CDTMesoscale DiscussionSPCClark, Coles, Cumberland64 min
Apr 8, 12:01 PM CDTMesoscale DiscussionSPCJackson, Monroe, Perry, Randolph, Saint Clair, Washington59 min
Apr 8, 12:50 PM CDTMesoscale DiscussionSPCBond, Calhoun, Champaign, Christian, Clark, Clay and 32 more85 min
Apr 8, 2:43 PM CDTMesoscale DiscussionSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 45 more92 min
Apr 8, 3:42 PM CDTMesoscale DiscussionSPCFranklin, Gallatin, Hamilton, Jackson, Jefferson, Monroe and 7 more63 min
Apr 8, 7:04 PM CDTMesoscale DiscussionSPCFranklin, Gallatin, Hardin, Jackson, Johnson, Pope and 3 more116 min
Apr 9, 12:29 PM CDTMesoscale DiscussionSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 8 more91 min
Apr 9, 3:12 PM CDTMesoscale DiscussionSPCAdams, Boone, Brown, Bureau, Calhoun, Carroll and 51 more93 min
Apr 9, 3:45 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Cumberland, Effingham and 25 more60 min
Apr 9, 6:04 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cass, DeKalb, DeWitt and 37 more86 min
Apr 9, 7:09 PM CDTMesoscale DiscussionSPCBoone, McHenry, Winnebago96 min
Apr 9, 8:01 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clark, Clay, Clinton, Coles and 36 more89 min
Apr 9, 10:56 PM CDTMesoscale DiscussionSPCCrawford, Edwards, Gallatin, Hamilton, Hardin, Johnson and 7 more94 min
Apr 19, 8:21 PM CDTMesoscale DiscussionSPCMassac54 min
Apr 25, 12:22 PM CDTMesoscale DiscussionSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 20 more2 hr
Apr 25, 3:25 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Edwards, Fayette and 25 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 archive20142016

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.