Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 1138
The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2017, 3:32 PM CDT for Crawford County, Sebastian County, Arkansas; 14 counties in Oklahoma; 20 counties in Texas. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2017, 3:32 PM CDT (20:32 UTC)
- Expired
- Jun 23, 2017, 5:30 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 36 counties
Crawford County, AR, Sebastian County, AR, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Montague County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Tarrant County, TX, Titus County, TX, Wise County, TX
The radar
The Norman radar (KTLX), 184 km from the middle of the area, began a volume at 20:35 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
Norman, OK (KOUN), launched 12:00Z, 8.5 hours before the alert went out and 183 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
- 540 J/kg
- Mixed-layer CIN
- -371 J/kg
- Mixed-layer LCL
- 1338 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 8:57 PM CDT | Mesoscale Discussion | SPC | Chicot | 63 min |
| Jun 23, 12:22 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clark, Cleburne and 37 more | 2 hr |
| Jun 23, 2:04 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Clark and 51 more | 6 hr |
| Jun 23, 4:35 PM CDT | Mesoscale Discussion | SPC | Arkansas, Conway, Craighead, Crittenden, Cross, Faulkner and 20 more | 85 min |
| Jun 23, 3:15 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Dawson, Fisher, Gaines, Garza and 10 more | 3 hr |
Nearby
Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Arkansas, 2017Every mesoscale discussion in 2017
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.