Alert archive / Illinois / Mesoscale Discussions in 2026
Mesoscale Discussion 162
The Storm Prediction Center issued this mesoscale discussion at Mar 7, 2026, 2:44 AM CST for 36 counties in Illinois; 18 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 7, 2026, 2:44 AM CST (08:44 UTC)
- Expired
- Mar 7, 2026, 4:45 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado and severe thunderstorm watches 18...21
All 54 counties
Alexander County, IL, Bond County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Macon County, IL, Marion County, IL, Monroe County, IL, Moultrie County, IL, Perry County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Shelby County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Howell County, MO, Iron County, MO, Madison County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 118 km from the middle of the area, began a volume at 08:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 8.7 hours before the alert went out and 261 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 183 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1023 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 8:18 PM CST | Tornado Watch | SPC | Rock Island | 6 hr |
| Mar 6, 10:28 PM CST | Severe Thunderstorm Watch | SPC | Calhoun, Jersey, Madison, Monroe, Randolph, Saint Clair | 5 hr |
| Mar 7, 5:40 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more | 2 hr |
| Mar 6, 7:43 PM CST | Mesoscale Discussion | SPC | Barton, Bates, Benton, Cedar, Dade, Henry and 4 more | 92 min |
| Mar 6, 9:43 PM CST | Mesoscale Discussion | SPC | Andrew, Buchanan, Caldwell, Clinton, Daviess, DeKalb and 10 more | 2 hr |
| Mar 6, 10:08 PM CST | Mesoscale Discussion | SPC | Callaway, Camden, Cole, Crawford, Dallas, Dent and 14 more | 67 min |
| Mar 7, 7:53 AM CST | Severe Thunderstorm Watch | SPC | Dunklin, Pemiscot | 8 hr |
Nearby
Mesoscale Discussions in Illinois, 2026Mesoscale Discussions in Missouri, 2026Every mesoscale discussion in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.