Alert archive / Arkansas / Mesoscale Discussions in 2018
Mesoscale Discussion 869
The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2018, 7:48 PM CDT for 24 counties in Arkansas; 7 counties in Texas. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2018, 7:48 PM CDT (00:48 UTC)
- Expired
- Jun 24, 2018, 9:45 PM CDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 31 counties
Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, Union County, AR, Bowie County, TX, Camp County, TX, Cass County, TX, Marion County, TX, Morris County, TX, Red River County, TX, Titus County, TX
The radar
The Shreveport radar (KSHV), 155 km from the middle of the area, began a volume at 00:50 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
Little Rock, AR (KBYH), launched 00:00Z, 0.8 hours before the alert went out and 338 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
- 1323 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1457 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
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 24, 7:06 PM CDT | Mesoscale Discussion | SPC | Dallam, Hansford, Hartley, Hutchinson, Moore, Ochiltree and 3 more | 84 min |
| Jun 24, 8:50 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 14 more | 7 hr |
| Jun 24, 9:49 PM CDT | Mesoscale Discussion | SPC | Carson, Dallam, Gray, Hansford, Hartley, Hemphill and 7 more | 86 min |
| Jun 24, 11:53 PM CDT | Mesoscale Discussion | SPC | Armstrong, Carson, Deaf Smith, Gray, Hemphill, Hutchinson and 7 more | 67 min |
| Jun 25, 3:34 AM CDT | Mesoscale Discussion | SPC | Wichita, Wilbarger | 86 min |
Nearby
Mesoscale Discussions in Arkansas, 2018Mesoscale Discussions in Texas, 2018Every mesoscale discussion in 2018
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.