Alert archive / Illinois / Mesoscale Discussions / 2023

Mesoscale Discussions in Illinois, February 2023

10 mesoscale discussions in February 2023. 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 February 2023. Tap one for its archive.

Mesoscale Discussions
10
Busiest day
February 22, 20235 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
Feb 9, 9:48 AM CSTMesoscale DiscussionSPCJo Daviess, Stephenson4 hr
Feb 16, 8:02 AM CSTMesoscale DiscussionSPCBoone, Carroll, Jo Daviess, McHenry, Ogle, Stephenson and 2 more6 hr
Feb 22, 8:46 AM CSTMesoscale DiscussionSPCBoone, Jo Daviess, McHenry, Stephenson, Winnebago5 hr
Feb 22, 10:59 AM CSTMesoscale DiscussionSPCChampaign, Christian, Clark, Coles, Crawford, Cumberland and 11 more91 min
Feb 22, 12:04 PM CSTMesoscale DiscussionSPCBond, Calhoun, Christian, Clinton, Fayette, Greene and 19 more56 min
Feb 22, 2:27 PM CSTMesoscale DiscussionSPCAlexander, Bond, Champaign, Christian, Clark, Clay and 40 more2 hr
Feb 22, 3:27 PM CSTMesoscale DiscussionSPCBoone, Lake, McHenry, Winnebago4 hr
Feb 27, 1:43 AM CSTMesoscale DiscussionSPCAdams, Alexander, Brown, Calhoun, Greene, Hancock and 8 more62 min
Feb 27, 8:46 AM CSTMesoscale DiscussionSPCChampaign, Ford, Iroquois, Piatt, Vermilion89 min
Feb 27, 9:44 AM CSTMesoscale DiscussionSPCClark, Douglas, Edgar, Vermilion61 min

By county

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

28 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20222024

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.