Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 109
The Storm Prediction Center issued this mesoscale discussion at Feb 3, 2012, 11:38 PM CST for 26 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 3, 2012, 11:38 PM CST (05:38 UTC)
- Expired
- Feb 4, 2012, 1:45 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Comal County, TX, Falls County, TX, Fayette County, TX, Grimes County, TX, Guadalupe County, TX, Hays County, TX, Houston County, TX, Kendall County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Milam County, TX, Robertson County, TX, Travis County, TX, Walker County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX
The radar
The Ft Hood radar (KGRK), 58 km from the middle of the area, began a volume at 05:42 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 nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 5.6 hours before the alert went out and 283 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
- 2376 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.5
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 3, 6:40 PM CST | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Dallas, Delta and 21 more | 95 min |
| Feb 3, 6:57 PM CST | Severe Thunderstorm Watch | SPC | Camp, Collin, Cooke, Dallas, Delta, Denton and 18 more | 7 hr |
| Feb 3, 7:14 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bastrop, Bell, Brazos and 32 more | 91 min |
| Feb 3, 9:04 PM CST | Mesoscale Discussion | SPC | Camp, Collin, Dallas, Delta, Fannin, Franklin and 9 more | 86 min |
| Feb 3, 11:49 PM CST | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Franklin, Hopkins, Marion and 6 more | 56 min |
| Feb 4, 3:42 AM CST | Mesoscale Discussion | SPC | Angelina, Atascosa, Austin, Bexar, Caldwell, Colorado and 23 more | 3 hr |
Nearby
Mesoscale Discussions in Texas, 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.