Alert archive / Oklahoma / Mesoscale Discussions in 2003
Mesoscale Discussion 2620
The Storm Prediction Center issued this mesoscale discussion at Dec 22, 2003, 6:32 PM CST for 18 counties in Arkansas; 21 counties in Oklahoma; 13 counties in Texas. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Dec 22, 2003, 6:32 PM CST (00:32 UTC)
- Expired
- Dec 22, 2003, 8:30 PM CST
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 52 counties
Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Miller County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Morris County, TX, Red River County, TX, Rockwall County, TX, Titus County, TX
The radar
The Western Arkansas radar (KSRX), 135 km from the middle of the area, began a volume at 00:36 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.5 hours before the alert went out and 226 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
- 2 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 170 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 |
|---|---|---|---|---|
| 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, 9:53 PM CST | Mesoscale Discussion | SPC | Clark, Columbia, Dallas, Hempstead, Howard, Lafayette and 6 more | 97 min |
| Dec 22, 11:40 PM CST | Mesoscale Discussion | SPC | Columbia, Dallas, Lafayette, Nevada, Ouachita | 95 min |
Nearby
Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Arkansas, 2003Mesoscale Discussions in Texas, 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.