Alert archive / Illinois / Mesoscale Discussions / 2011
Mesoscale Discussions in Illinois, March 2011
4 mesoscale discussions in March 2011. 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 March 2011. Tap one for its archive.
- Mesoscale Discussions
- 4
- Busiest day
- March 23, 20112 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 4, 3:22 PM CST | Mesoscale Discussion | SPC | Calhoun, Cass, Greene, Jersey, Macoupin, Menard and 4 more | 83 min |
| Mar 4, 6:22 PM CST | Mesoscale Discussion | SPC | Clinton, Fayette, Franklin, Jackson, Jefferson, Marion and 5 more | 53 min |
| Mar 22, 11:21 PM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, Warren | 84 min |
| Mar 23, 3:20 PM CDT | Mesoscale Discussion | SPC | Iroquois, Vermilion | 85 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Calhoun County1
- Cass County1
- Greene County1
- Jersey County1
- Macoupin County1
- Menard County1
- Morgan County1
- Pike County1
- Sangamon County1
- Scott County1
- Clinton County1
- Fayette County1
- Franklin County1
- Jackson County1
- Jefferson County1
- Marion County1
- Monroe County1
- Perry County1
- Randolph County1
- Saint Clair County1
- Washington County1
- Hancock County1
- Henderson County1
- Warren County1
- Iroquois County1
- Vermilion County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.