Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 185, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Aug 8, 2018, 2:37 PM CDT for 4 counties in Arkansas. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2018, 2:37 PM CDT (19:37 UTC)
- Expired
- Aug 8, 2018, 3:00 PM CDT
- In force
- 23 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hempstead County, AR, Howard County, AR, Little River County, AR, Sevier County, AR
The radar
The Western Arkansas radar (KSRX), 160 km from the middle of the area, began a volume at 19:38 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
Springfield, MO (KSGF), launched 12:00Z, 7.6 hours before the alert went out and 336 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
- 1345 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 1:42 PM CDT, 55 minutes earlier.
Area forecast discussion, Aug 8, 1:42 PM CDT, 55 minutes before
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</html>Hazardous weather outlook, Aug 8, 11:59 AM CDT, 2 hours 38 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 1159 AM CDT Wed Aug 8 2018 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-091700- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 1159 AM CDT Wed Aug 8 2018 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...This Afternoon and Tonight... Our afternoon temperatures will be in the mid and upper 90s with this muggy air making our heat index range from 100 to 105 degrees. Scattered thunderstorms will spread southeastward across Oklahoma well ahead of a cold front. Any mature thunderstorms will bring locally gusty winds and brief heavy rainfall. During the overnight hours, more thunderstorms will be developing in the I-30 corridor and moving southward toward I-20 as a cold front continue to sink in our direction. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Scattered to numerous thunderstorms will be ongoing early on Thursday along and North of I-20. As the weak cold front slowly moves into the area and begins to stall out, scattered to possibly numerous showers and thunderstorms will continue for most of the area Friday, and possibly through the weekend. This activity will begin to become more widely scattered by early next week. Locally gusty winds and heavy rainfall will be likely along with minor flooding issues associated with repeated rainfall. .SPOTTER INFORMATION STATEMENT... Activation of emergency managers, spotter networks and amateur radio operators could be needed this later this afternoon, as well as possibly even later during the overnight hours, for areas North of I-20. 07 07
In the hours before
Special weather statement, Aug 8, 2:01 PM CDT, 36 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 2:01 PM CDT | Special Weather Statement | SHV | Sevier | 59 min |
| Aug 8, 2:26 PM CDT | Special Weather Statement | SHV | Howard | 34 min |
| Aug 8, 3:04 PM CDT | Special Weather Statement | SHV | Hempstead, Howard, Little River, Nevada | 56 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2018Every severe thunderstorm warning 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.