Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 9, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 17, 2021, 3:14 AM CDT for Franklin County, Sebastian County, Arkansas. It was in force for 33 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
- Mar 17, 2021, 3:14 AM CDT (08:14 UTC)
- Expired
- Mar 17, 2021, 3:47 AM CDT
- In force
- 33 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Franklin County, AR, Sebastian County, AR
The radar
The Western Arkansas radar (KSRX), 44 km from the middle of the area, began a volume at 08:14 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 00:00Z, 8.2 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2158 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
021
WUUS54 KTSA 170814
SVRTSA
ARC047-131-170900-
/O.NEW.KTSA.SV.W.0009.210317T0814Z-210317T0900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
314 AM CDT Wed Mar 17 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Southern Franklin County in west central Arkansas...
East central Sebastian County in west central Arkansas...
* Until 400 AM CDT.
* At 314 AM CDT, a severe thunderstorm was located over Fort Chaffee,
moving northeast at 25 mph.
HAZARD...60 mph wind gusts and half dollar 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...
Charleston... Greenwood...
Altus... Branch...
Denning... Wiederkehr Village...
Washburn... Fort Chaffee...
Etna... Peter Pender...
Alix... Meg...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3537 9375 3540 9379 3542 9380 3531 9381
3532 9392 3523 9392 3523 9402 3514 9403
3514 9412 3524 9419 3550 9376 3543 9371
3538 9371
TIME...MOT...LOC 0814Z 239DEG 21KT 3520 9407
HAIL...1.25IN
WIND...60MPH
$$2 follow-up statements
672
WWUS54 KTSA 170838
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
338 AM CDT Wed Mar 17 2021
ARC131-170847-
/O.CAN.KTSA.SV.W.0009.000000T0000Z-210317T0900Z/
Sebastian AR-
338 AM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SEBASTIAN COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore the warning has been cancelled.
LAT...LON 3523 9397 3531 9405 3535 9400 3550 9376
3543 9371 3538 9371 3537 9375 3540 9379
3542 9380 3531 9381 3532 9392 3523 9392
TIME...MOT...LOC 0837Z 229DEG 25KT 3529 9392
$$
ARC047-170900-
/O.CON.KTSA.SV.W.0009.000000T0000Z-210317T0900Z/
Franklin AR-
338 AM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 AM CDT
FOR SOUTHERN FRANKLIN COUNTY...
At 337 AM CDT, a severe thunderstorm was located near Branch, moving
northeast at 30 mph.
HAZARD...60 mph wind gusts and half dollar 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...
Charleston... Altus...
Branch... Denning...
Wiederkehr Village... Etna...
Peter Pender... Alix...
Meg...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3523 9397 3531 9405 3535 9400 3550 9376
3543 9371 3538 9371 3537 9375 3540 9379
3542 9380 3531 9381 3532 9392 3523 9392
TIME...MOT...LOC 0837Z 229DEG 25KT 3529 9392
HAIL...1.25IN
WIND...60MPH
$$362
WWUS54 KTSA 170847
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
347 AM CDT Wed Mar 17 2021
ARC047-170857-
/O.CAN.KTSA.SV.W.0009.000000T0000Z-210317T0900Z/
Franklin AR-
347 AM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FRANKLIN COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.
LAT...LON 3523 9397 3531 9405 3535 9400 3550 9376
3543 9371 3538 9371 3537 9375 3540 9379
3542 9380 3531 9381 3532 9392 3523 9392
TIME...MOT...LOC 0847Z 239DEG 21KT 3532 9385
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 1:33 AM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 42 min |
| Mar 17, 1:52 AM CDT | Special Weather Statement | TSA | Sebastian | 23 min |
| Mar 17, 2:37 AM CDT | Severe Thunderstorm Warning | TSA | Franklin, Sebastian | 38 min |
| Mar 17, 6:33 AM CDT | Special Weather Statement | TSA | Benton, Crawford, Franklin, Sebastian, Washington | 42 min |
| Mar 17, 3:10 PM CDT | Special Weather Statement | TSA | Washington | 35 min |
| Mar 17, 3:31 PM CDT | Severe Thunderstorm Warning | TSA | Benton | 13 min |
| Mar 17, 4:02 PM CDT | Special Weather Statement | TSA | Benton | 28 min |
| Mar 17, 4:09 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 13 min |
| Mar 17, 4:40 PM CDT | Special Weather Statement | TSA | Benton | 35 min |
| Mar 17, 4:48 PM CDT | Severe Thunderstorm Warning | TSA | Benton | 27 min |
| Mar 17, 5:23 PM CDT | Special Weather Statement | TSA | Benton | 37 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; radar from the NEXRAD Level II archive.