Alert archive / Missouri / Mesoscale Discussions in 2012
Mesoscale Discussion 1906
The Storm Prediction Center issued this mesoscale discussion at Sep 6, 2012, 6:29 PM CDT for 5 states. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Sep 6, 2012, 6:29 PM CDT (23:29 UTC)
- Expired
- Sep 6, 2012, 8:00 PM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 64 counties
Baxter County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Fulton County, AR, Greene County, AR, Marion County, AR, Randolph County, AR, Sharp County, AR, Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Todd County, KY, Trigg County, KY, Barry County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Douglas County, MO, Dunklin County, MO, Howell County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Pemiscot County, MO, Perry County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Henry County, TN, Lake County, TN, Montgomery County, TN, Obion County, TN, Stewart County, TN, Weakley County, TN
The radar
The Paducah radar (KPAH), 135 km from the middle of the area, began a volume at 23:29 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
Little Rock, AR (KLZK), launched 12:00Z, 11.5 hours before the alert went out and 268 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
- 2411 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1359 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- -14 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 |
|---|---|---|---|---|
| Sep 6, 10:52 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clay, Fulton and 3 more | 83 min |
| Sep 6, 3:37 PM CDT | Mesoscale Discussion | SPC | Clay, Randolph | 83 min |
| Sep 6, 12:28 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clinton, Hardin, Jackson, Johnson, Massac and 9 more | 9 hr |
| Sep 6, 2:03 PM CDT | Mesoscale Discussion | SPC | Jackson, Monroe, Randolph, Saint Clair | 57 min |
Nearby
Mesoscale Discussions in Missouri, 2012Mesoscale Discussions in Illinois, 2012Mesoscale Discussions in Kentucky, 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.