Alert archive / Texas / Mesoscale Discussions in 2013
Mesoscale Discussion 1533
The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2013, 6:51 PM CDT for Lafayette County, Miller County, Arkansas; Bossier Parish, Caddo Parish, De Soto Parish, Louisiana; 23 counties in Texas. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2013, 6:51 PM CDT (23:51 UTC)
- Expired
- Jul 26, 2013, 8:15 PM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 28 counties
Lafayette County, AR, Miller County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Bowie County, TX, Camp County, TX, Cass County, TX, Delta County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 124 km from the middle of the area, began a volume at 23:53 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
Shreveport, LA (KBAD), launched 12:00Z, 11.9 hours before the alert went out and 132 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
- 1878 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 678 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.6
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 |
|---|---|---|---|---|
| Jul 26, 3:37 PM CDT | Severe Thunderstorm Watch | SPC | Columbia, Hempstead, Lafayette, Miller, Nevada, Union | 7 hr |
| Jul 26, 5:35 PM CDT | Mesoscale Discussion | SPC | Avoyelles, Bienville, Caldwell, Catahoula, Concordia, East Baton Rouge and 20 more | 2 hr |
| Jul 26, 2:07 PM CDT | Mesoscale Discussion | SPC | Camp, Cass, Collin, Delta, Fannin, Franklin and 12 more | 113 min |
| Jul 26, 4:51 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Coleman, Comanche, Concho, Coryell and 13 more | 114 min |
Nearby
Mesoscale Discussions in Texas, 2013Mesoscale Discussions in Louisiana, 2013Mesoscale Discussions in Arkansas, 2013Every mesoscale discussion in 2013
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.