Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 1158
The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2012, 1:36 AM CDT for 42 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2012, 1:36 AM CDT (06:36 UTC)
- Expired
- Jun 14, 2012, 4:00 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 42 counties
Anderson County, TX, Angelina County, TX, Cherokee County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Ellis County, TX, Freestone County, TX, Grayson County, TX, Gregg County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Jack County, TX, Jasper County, TX, Johnson County, TX, Kaufman County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Montague County, TX, Nacogdoches County, TX, Navarro County, TX, Polk County, TX, Rains County, TX, Rockwall County, TX, Rusk County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Tarrant County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Wise County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 95 km from the middle of the area, began a volume at 06:36 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
Fort Worth, TX (KFWD), launched 00:00Z, 6.6 hours before the alert went out and 106 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
- 2223 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1431 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 9.9
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 |
|---|---|---|---|---|
| Jun 13, 8:33 PM CDT | Mesoscale Discussion | SPC | Anderson, Camp, Cherokee, Collin, Dallas, Delta and 22 more | 87 min |
| Jun 13, 8:51 PM CDT | Mesoscale Discussion | SPC | Andrews, Brewster, Crane, Culberson, Dawson, Ector and 12 more | 84 min |
| Jun 14, 3:14 PM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Cochran and 21 more | 61 min |
| Jun 14, 3:46 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 38 more | 9 hr |
| Jun 14, 4:40 PM CDT | Mesoscale Discussion | SPC | Andrews, Brewster, Crane, Crockett, Ector, Glasscock and 11 more | 95 min |
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.