Alert archive / Texas / Mesoscale Discussions in 2013
Mesoscale Discussion 296
The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2013, 8:49 AM CDT for 5 parishes in Louisiana; 15 counties in Texas. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Mar 23, 2013, 8:49 AM CDT (13:49 UTC)
- Expired
- Mar 23, 2013, 9:45 AM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
Counties Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Webster Parish, LA, Camp County, TX, Cass County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Kaufman County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Rusk County, TX, Smith County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 111 km from the middle of the area, began a volume at 13:52 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 12:00Z, 1.8 hours before the alert went out and 215 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 |
|---|---|---|---|---|
| Mar 22, 8:16 PM CDT | Mesoscale Discussion | SPC | Bienville, Caldwell, Claiborne, East Carroll, Franklin, Jackson and 9 more | 119 min |
| Mar 23, 10:32 AM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 13 more | 58 min |
| Mar 23, 2:09 PM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 19 more | 96 min |
| Mar 23, 5:01 PM CDT | Mesoscale Discussion | SPC | Bienville, Caldwell, Catahoula, Concordia, East Carroll, Franklin and 12 more | 119 min |
| Mar 23, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Caldwell, Catahoula, Concordia, East Carroll, Franklin, Grant and 11 more | 5 hr |
| Mar 23, 3:39 AM CDT | Mesoscale Discussion | SPC | Callahan, Coke, Coleman, Eastland, Fisher, Glasscock and 15 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2013Mesoscale Discussions in Louisiana, 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.