Alert archive / Texas / Mesoscale Discussions in 2005
Mesoscale Discussion 75
The Storm Prediction Center issued this mesoscale discussion at Jan 12, 2005, 7:52 PM CST for 21 counties in Arkansas; LeFlore County, McCurtain County, Oklahoma; 35 counties in Texas. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Jan 12, 2005, 7:52 PM CST (01:52 UTC)
- Expired
- Jan 12, 2005, 9:15 PM CST
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 58 counties
Clark County, AR, Conway County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Miller County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Van Buren County, AR, Yell County, AR, LeFlore County, OK, McCurtain County, OK, Anderson County, TX, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Delta County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Wood County, TX
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 1.9 hours before the alert went out and 162 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
- 242 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 262 m²/s²
- 0-3 km storm-relative helicity
- 342 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.2
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 |
|---|---|---|---|---|
| Jan 12, 6:02 PM CST | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more | 88 min |
| Jan 12, 9:28 PM CST | Mesoscale Discussion | SPC | Clay, Cleburne, Craighead, Fulton, Greene, Independence and 5 more | 32 min |
| Jan 12, 10:16 PM CST | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Clark, Clay and 44 more | 59 min |
| Jan 12, 10:50 PM CST | Severe Thunderstorm Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleburne and 27 more | 5 hr |
| Jan 13, 2:25 AM CST | Tornado Watch | SPC | Chicot | 7 hr |
Nearby
Mesoscale Discussions in Texas, 2005Mesoscale Discussions in Arkansas, 2005Mesoscale Discussions in Oklahoma, 2005Every mesoscale discussion in 2005
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.