Alert archive / Illinois / Mesoscale Discussions / 2016

Mesoscale Discussions in Illinois, April 2016

10 mesoscale discussions in April 2016. 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 2016. Tap one for its archive.

Mesoscale Discussions
10
Busiest day
April 26, 20163 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 6, 2:40 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 11 more2 hr
Apr 21, 1:29 PM CDTMesoscale DiscussionSPCBond, Bureau, Champaign, Christian, Clark, Coles and 36 more3 hr
Apr 25, 1:40 PM CDTMesoscale DiscussionSPCBoone, Carroll, Cook, DeKalb, DuPage, Kane and 8 more2 hr
Apr 25, 6:04 PM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 13 more86 min
Apr 26, 10:03 AM CDTMesoscale DiscussionSPCCalhoun, Greene, Jersey, Monroe, Randolph, Saint Clair117 min
Apr 26, 12:58 PM CDTMesoscale DiscussionSPCCrawford, Lawrence3 hr
Apr 26, 2:42 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Edwards, Fayette and 23 more2 hr
Apr 27, 5:34 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Hancock and 6 more116 min
Apr 27, 7:59 PM CDTMesoscale DiscussionSPCChristian, Clay, Effingham, Fayette, Jasper, Richland and 1 more91 min
Apr 27, 8:06 PM CDTMesoscale DiscussionSPCAdams, Brown, Greene, Hancock, Pike, Schuyler and 1 more84 min

By county

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

57 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20152017

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.