Alert archive / Texas / Mesoscale Discussions in 2011
Mesoscale Discussion 2237
The Storm Prediction Center issued this mesoscale discussion at Oct 7, 2011, 10:39 PM MDT for Roosevelt County, New Mexico; 27 counties in Texas. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Oct 7, 2011, 10:39 PM MDT (04:39 UTC)
- Expired
- Oct 8, 2011, 12:15 AM MDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 28 counties
Roosevelt County, NM, Andrews County, TX, Bailey County, TX, Borden County, TX, Castro County, TX, Cochran County, TX, Crane County, TX, Crosby County, TX, Dawson County, TX, Ector County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Glasscock County, TX, Hale County, TX, Hockley County, TX, Howard County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Parmer County, TX, Terry County, TX, Upton County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX
The radar
The Lubbock radar (KLBB), 95 km from the middle of the area, began a volume at 04:42 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
Midland Regional, TX (KMAF), launched 00:00Z, 4.7 hours before the alert went out and 158 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
- 493 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 2174 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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 |
|---|---|---|---|---|
| Oct 7, 7:40 PM MDT | Mesoscale Discussion | SPC | Lea, Roosevelt | 95 min |
| Oct 7, 10:57 PM MDT | Severe Thunderstorm Watch | SPC | Lea | 6 hr |
| Oct 7, 9:25 PM MDT | Mesoscale Discussion | SPC | Dallam, Hartley, Moore, Oldham, Sherman | 95 min |
| Oct 7, 11:55 PM MDT | Mesoscale Discussion | SPC | Dallam, Hansford, Hartley, Moore, Oldham, Potter and 1 more | 95 min |
| Oct 8, 12:47 AM MDT | Severe Thunderstorm Watch | SPC | Armstrong, Carson, Dallam, Deaf Smith, Donley, Gray and 11 more | 5 hr |
| Oct 8, 4:28 AM MDT | Mesoscale Discussion | SPC | Armstrong, Carson, Donley, Gray, Hale, Hansford and 7 more | 62 min |
Nearby
Mesoscale Discussions in Texas, 2011Mesoscale Discussions in New Mexico, 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.