Alert archive / Missouri / Mesoscale Discussions in 2012
Mesoscale Discussion 1199
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2012, 5:34 PM CDT for Calhoun County, Jersey County, Illinois; 34 counties in Missouri. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2012, 5:34 PM CDT (22:34 UTC)
- Expired
- Jun 17, 2012, 7:00 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 36 counties
Calhoun County, IL, Jersey County, IL, Adair County, MO, Audrain County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, City of Saint Louis, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Franklin County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Knox County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 171 km from the middle of the area, began a volume at 22:36 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
Davenport, (KDVN), launched 12:00Z, 10.6 hours before the alert went out and 288 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
- 1170 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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 16, 7:58 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Champaign, Christian, Clinton, Coles and 34 more | 92 min |
| Jun 16, 8:23 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 38 more | 3 hr |
| Jun 16, 10:30 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 26 more | 90 min |
| Jun 16, 11:03 PM CDT | Mesoscale Discussion | SPC | Benton, Camden, Dallas, Dent, Henry, Hickory and 7 more | 87 min |
| Jun 17, 2:54 AM CDT | Mesoscale Discussion | SPC | Barton, Cedar, Dade, Polk, Vernon | 3 hr |
Nearby
Mesoscale Discussions in Missouri, 2012Mesoscale Discussions in Illinois, 2012Every mesoscale discussion in 2012
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.