Alert archive / Illinois / Mesoscale Discussions / 2013

Mesoscale Discussions in Illinois, September 2013

6 mesoscale discussions in September 2013. 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 September 2013. Tap one for its archive.

Mesoscale Discussions
6
Busiest day
September 1, 20133 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
Aug 31, 9:12 PM CDTMesoscale DiscussionSPCBond, Clark, Clay, Clinton, Crawford, Cumberland and 14 more63 min
Sep 1, 1:56 PM CDTMesoscale DiscussionSPCBond, Clay, Clinton, Coles, Crawford, Cumberland and 17 more3 hr
Sep 1, 6:11 PM CDTMesoscale DiscussionSPCBoone, Brown, Bureau, Cass, DeKalb, DeWitt and 27 more2 hr
Sep 7, 4:01 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 21 more119 min
Sep 19, 4:29 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Henderson, Henry and 14 more91 min
Sep 19, 7:36 PM CDTMesoscale DiscussionSPCBoone, Carroll, DeKalb, Henry, Jo Daviess, Lee and 7 more114 min

By county

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

30 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20122014

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.