Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 2622
The Storm Prediction Center issued this mesoscale discussion at Dec 22, 2003, 9:53 PM CST for 4 states. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Dec 22, 2003, 9:53 PM CST (03:53 UTC)
- Expired
- Dec 22, 2003, 11:30 PM CST
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 43 counties
Clark County, AR, Columbia County, AR, Dallas County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Sevier County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, McCurtain County, OK, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Houston County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 64 km from the middle of the area, began a volume at 03:53 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 (KSHV), launched 00:00Z, 3.9 hours before the alert went out and 73 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
- 232 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 982 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 6.6
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 |
|---|---|---|---|---|
| Dec 22, 6:32 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Hempstead, Howard and 12 more | 118 min |
| Dec 22, 7:29 PM CST | Mesoscale Discussion | SPC | Calhoun, Clark, Columbia, Dallas, Garland, Grant and 8 more | 2 hr |
| Dec 22, 8:00 PM CST | Severe Thunderstorm Watch | SPC | Clark, Columbia, Dallas, Hempstead, Howard, Lafayette and 6 more | 5 hr |
| Dec 22, 11:40 PM CST | Mesoscale Discussion | SPC | Columbia, Dallas, Lafayette, Nevada, Ouachita | 95 min |
Nearby
Mesoscale Discussions in Texas, 2003Mesoscale Discussions in Arkansas, 2003Mesoscale Discussions in Louisiana, 2003Every mesoscale discussion in 2003
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.