Alert archive / Illinois / Mesoscale Discussions in 2011
Mesoscale Discussion 1232
The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2011, 2:13 PM CDT for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 15, 2011, 2:13 PM CDT (19:13 UTC)
- Expired
- Jun 15, 2011, 4:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 70 counties
Alexander County, IL, Clay County, IL, Clinton County, IL, Cumberland County, IL, DeWitt County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Macon County, IL, Marion County, IL, Massac County, IL, Moultrie County, IL, Perry County, IL, Piatt County, IL, Pope County, IL, Pulaski County, IL, Richland 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, Gibson County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Cape Girardeau County, MO, Mississippi County, MO, Perry County, MO, Scott County, MO, Montgomery County, TN, Stewart County, TN
The radar
The Evansville,IN radar (KVWX), 64 km from the middle of the area, began a volume at 19:14 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 7.2 hours before the alert went out and 398 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
- 2133 J/kg
- Mixed-layer CIN
- -194 J/kg
- Mixed-layer LCL
- 1365 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 206 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 |
|---|---|---|---|---|
| Jun 15, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | Monroe, Randolph, Saint Clair | 4 hr |
| Jun 15, 1:55 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Christian, DeWitt and 22 more | 3 hr |
| Jun 15, 4:24 AM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Champaign, Christian, Clark and 45 more | 96 min |
| Jun 15, 5:04 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Daviess, Dubois, Floyd, Greene and 8 more | 4 hr |
| Jun 15, 10:54 AM CDT | Mesoscale Discussion | SPC | Allen, Calloway, Christian, Fulton, Graves, Hickman and 7 more | 2 hr |
| Jun 14, 7:47 PM CDT | Mesoscale Discussion | SPC | Adair, Andrew, Audrain, Bates, Benton, Boone and 43 more | 58 min |
| Jun 14, 8:54 PM CDT | Mesoscale Discussion | SPC | Newton | 66 min |
| Jun 14, 9:11 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Camden, Cedar, Christian, Dade and 23 more | 64 min |
| Jun 15, 12:29 AM CDT | Mesoscale Discussion | SPC | Benton, Bollinger, Butler, Camden, Carter, Cedar and 42 more | 2 hr |
| Jun 15, 11:52 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bedford, Benton, Bledsoe, Blount, Bradley and 78 more | 9 hr |
| Jun 15, 3:34 PM CDT | Mesoscale Discussion | SPC | Anderson, Bedford, Benton, Bledsoe, Blount, Bradley and 64 more | 116 min |
| Jun 15, 5:53 PM CDT | Mesoscale Discussion | SPC | Bedford, Bledsoe, Blount, Bradley, Cannon, Chester and 31 more | 97 min |
Nearby
Mesoscale Discussions in Illinois, 2011Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in Indiana, 2011Every mesoscale discussion in 2011
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.