Alert archive / Missouri / Mesoscale Discussions in 2011
Mesoscale Discussion 156
The Storm Prediction Center issued this mesoscale discussion at Feb 27, 2011, 7:03 PM CST for Bourbon County, Crawford County, Kansas; 23 counties in Missouri. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Feb 27, 2011, 7:03 PM CST (01:03 UTC)
- Expired
- Feb 27, 2011, 8:30 PM CST
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 25 counties
Bourbon County, KS, Crawford County, KS, Barton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, Miller County, MO, Newton County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 56 km from the middle of the area, began a volume at 01:06 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
Springfield, MO (KSGF), launched 00:00Z, 1.1 hours before the alert went out and 107 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
- 626 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 369 m²/s²
- 0-3 km storm-relative helicity
- 472 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.4
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 27, 7:24 PM CST | Tornado Watch | SPC | Bourbon, Cherokee, Crawford | 7 hr |
| Feb 27, 8:25 PM CST | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Jefferson, Madison, Perry, Saint Charles and 5 more | 65 min |
| Feb 27, 9:40 PM CST | Tornado Watch | SPC | Bollinger, Butler, Callaway, Cape Girardeau, Carter, Cole and 22 more | 6 hr |
| Feb 27, 10:41 PM CST | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Franklin, Iron, Jefferson, Madison and 8 more | 94 min |
| Feb 28, 1:05 AM CST | Mesoscale Discussion | SPC | Dunklin, Mississippi, New Madrid, Pemiscot, Scott, Stoddard | 25 min |
| Feb 28, 1:33 AM CST | Tornado Watch | SPC | Dunklin, Mississippi, New Madrid, Pemiscot | 7 hr |
Nearby
Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Kansas, 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.