Alert archive / Illinois / Mesoscale Discussions in 2013
Mesoscale Discussion 194
The Storm Prediction Center issued this mesoscale discussion at Feb 21, 2013, 3:37 PM CST for 34 counties in Illinois; 9 counties in Iowa; Clark County, Scotland County, Missouri. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 21, 2013, 3:37 PM CST (21:37 UTC)
- Expired
- Feb 21, 2013, 7:30 PM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 45 counties
Appanoose County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Monroe County, IA, Van Buren County, IA, Wapello County, IA, Adams County, IL, Brown County, IL, Cass County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Effingham County, IL, Fayette County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Jasper County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Tazewell County, IL, Warren County, IL, Clark County, MO, Scotland County, MO
The radar
The Lincoln radar (KILX), 62 km from the middle of the area, began a volume at 21:37 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 12:00Z, 9.6 hours before the alert went out and 117 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 11:19 AM CST | Mesoscale Discussion | SPC | Calhoun | 4 hr |
| Feb 21, 12:46 PM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Fayette, Franklin, Greene and 19 more | 4 hr |
| Feb 21, 2:32 AM CST | Mesoscale Discussion | SPC | Barry, Barton, Bates, Cedar, Christian, Dade and 15 more | 6 hr |
| Feb 21, 3:16 AM CST | Mesoscale Discussion | SPC | Cass, Jackson | 6 hr |
| Feb 21, 6:16 AM CST | Mesoscale Discussion | SPC | Adair, Andrew, Atchison, Audrain, Bates, Benton and 55 more | 5 hr |
| Feb 21, 9:27 AM CST | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Butler, Camden and 39 more | 4 hr |
Nearby
Mesoscale Discussions in Illinois, 2013Mesoscale Discussions in Iowa, 2013Mesoscale Discussions in Missouri, 2013Every mesoscale discussion in 2013
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.