Alert archive / Arkansas / Mesoscale Discussions in 2022
Mesoscale Discussion 1069
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2022, 10:56 AM CDT for 22 counties in Arkansas; 7 counties in Texas. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2022, 10:56 AM CDT (15:56 UTC)
- Expired
- Jun 7, 2022, 12:30 PM CDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 319...320
All 29 counties
Clark County, AR, Columbia County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Yell County, AR, Bowie County, TX, Cass County, TX, Delta County, TX, Franklin County, TX, Morris County, TX, Red River County, TX, Titus County, TX
The radar
The Western Arkansas radar (KSRX), 144 km from the middle of the area, began a volume at 15:59 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 12:00Z, 3.9 hours before the alert went out and 179 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
- 782 J/kg
- Mixed-layer CIN
- -271 J/kg
- Mixed-layer LCL
- 672 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
311
ACUS11 KWNS 071556
SWOMCD
SPC MCD 071556
ARZ000-LAZ000-TXZ000-OKZ000-071730-
Mesoscale Discussion 1069
NWS Storm Prediction Center Norman OK
1056 AM CDT Tue Jun 07 2022
Areas affected...Portions of far eastern OK into the ArkLaTex
Concerning...Severe Thunderstorm Watch 319...320...
Valid 071556Z - 071730Z
The severe weather threat for Severe Thunderstorm Watch 319, 320
continues.
SUMMARY...An isolated threat for strong to locally damaging winds
should continue this morning.
DISCUSSION...The earlier intense convection across southeastern OK
has recently weakened, as substantial convective inhibition has
likely acted to limit the intensity of updrafts. Recent VWPs from
KFWS show a weakening trend to a southwesterly low-level jet as
well. Still, diurnal heating ahead of the ongoing activity should
further erode remaining MLCIN, and MLCAPE is forecast to increase
into the 1500-2000 J/kg range over the next couple of hours. Some
uptick in convective intensity may occur as thunderstorms spread
into western/central AR late this morning into the early afternoon.
Isolated strong to locally damaging winds should continue to be the
primary threat given the mainly linear mode.
..Gleason.. 06/07/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LZK...SHV...TSA...FWD...
LAT...LON 33489591 33839498 34129475 35699446 35689314 34729267
33069303 32919402 32999501 33489591SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 7:44 AM CDT | Mesoscale Discussion | SPC | Hempstead, Howard, Lafayette, Little River, Miller, Nevada and 3 more | 3 hr |
| Jun 7, 7:59 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Franklin, Garland, Hempstead, Hot Spring and 11 more | 6 hr |
| Jun 7, 9:21 AM CDT | Severe Thunderstorm Watch | SPC | Columbia, Lafayette, Miller | 4 hr |
| Jun 7, 12:24 PM CDT | Mesoscale Discussion | SPC | Arkansas, Clay, Cleburne, Cleveland, Conway, Craighead and 31 more | 3 hr |
| Jun 6, 9:10 PM CDT | Mesoscale Discussion | SPC | Hansford, Hutchinson, Moore, Sherman | 95 min |
| Jun 7, 12:42 AM CDT | Severe Thunderstorm Watch | SPC | Hansford, Hemphill, Lipscomb, Ochiltree, Roberts, Wheeler | 4 hr |
| Jun 7, 12:48 AM CDT | Mesoscale Discussion | SPC | Hansford, Hemphill, Hutchinson, Lipscomb, Ochiltree, Roberts and 1 more | 117 min |
| Jun 7, 8:50 AM CDT | Mesoscale Discussion | SPC | Fannin, Lamar | 85 min |
| Jun 7, 1:26 PM CDT | Mesoscale Discussion | SPC | Dallam, Sherman | 3 hr |
| Jun 7, 3:17 PM CDT | Severe Thunderstorm Watch | SPC | Dallam, Deaf Smith, Hartley, Oldham | 8 hr |
Nearby
Mesoscale Discussions in Arkansas, 2022Mesoscale Discussions in Texas, 2022Every mesoscale discussion in 2022
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.