Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 151, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 20, 2021, 11:44 PM CDT for Benton County, Arkansas. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 20, 2021, 11:44 PM CDT (04:44 UTC)
- Expired
- Sep 21, 2021, 12:30 AM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Benton County, AR
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 4.7 hours before the alert went out and 67 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
- 842 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1973 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted.
335
WUUS54 KTSA 210444
SVRTSA
ARC007-210530-
/O.NEW.KTSA.SV.W.0151.210921T0444Z-210921T0530Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1144 PM CDT Mon Sep 20 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Northwestern Benton County in northwestern Arkansas...
* Until 1230 AM CDT.
* At 1143 PM CDT, a severe thunderstorm was located 4 miles southeast
of South West City, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations in or near the path include...
Bella Vista... Pea Ridge...
Gravette... Hiwasse...
Maysville... Miller...
This includes Interstate 49 between mile markers 92 and 93.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3644 9408 3635 9459 3650 9462 3650 9408
TIME...MOT...LOC 0443Z 265DEG 28KT 3648 9454
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
596
WWUS54 KTSA 210521
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
1221 AM CDT Tue Sep 21 2021
ARC007-210530-
/O.EXP.KTSA.SV.W.0151.000000T0000Z-210921T0530Z/
Benton AR-
1221 AM CDT Tue Sep 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BENTON COUNTY
WILL EXPIRE AT 1230 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still likely with this thunderstorm.
LAT...LON 3644 9408 3635 9459 3650 9462 3650 9408
TIME...MOT...LOC 0520Z 265DEG 28KT 3650 9420
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 12:12 AM CDT | Special Weather Statement | TSA | Benton | 33 min |
| Sep 21, 12:46 AM CDT | Special Weather Statement | TSA | Benton, Carroll | 44 min |
| Sep 21, 1:17 AM CDT | Special Weather Statement | TSA | Washington | 43 min |
| Sep 21, 1:29 AM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 46 min |
| Sep 21, 2:11 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 32 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2021Every severe thunderstorm warning in 2021
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.