Alert archive / Illinois / Mesoscale Discussions / 2017

Mesoscale Discussions in Illinois, November 2017

10 mesoscale discussions in November 2017. 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 November 2017. Tap one for its archive.

Mesoscale Discussions
10
Busiest day
November 5, 20173 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
Nov 2, 7:31 PM CDTMesoscale DiscussionSPCFranklin, Gallatin, Hamilton, Jackson, Jefferson, Johnson and 8 more119 min
Nov 5, 6:04 AM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Coles, Cumberland and 19 more2 hr
Nov 5, 11:09 AM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 30 more66 min
Nov 5, 2:51 PM CSTMesoscale DiscussionSPCAlexander, Bond, Christian, Clark, Clay, Clinton and 38 more114 min
Nov 5, 6:07 PM CSTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 11 more113 min
Nov 5, 8:59 PM CSTMesoscale DiscussionSPCMassac91 min
Nov 6, 10:43 AM CSTMesoscale DiscussionSPCAlexander3 hr
Nov 18, 5:29 AM CSTMesoscale DiscussionSPCAdams, Brown, Cass, Champaign, DeWitt, Ford and 11 more3 hr
Nov 18, 10:24 AM CSTMesoscale DiscussionSPCAlexander, Clark, Clay, Clinton, Crawford, Cumberland and 26 more2 hr
Nov 18, 1:48 PM CSTMesoscale DiscussionSPCAlexander, Clark, Clay, Crawford, Edgar, Edwards and 20 more57 min

By county

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

24 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20162018

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.