Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 47, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 9, 2021, 9:27 PM CDT for Crawford County, Washington County, Arkansas; Adair County, Cherokee County, Sequoyah County, Oklahoma. It was in force for 48 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
- Apr 9, 2021, 9:27 PM CDT (02:27 UTC)
- Expired
- Apr 9, 2021, 10:15 PM CDT
- In force
- 48 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Crawford County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 51 km from the middle of the area, began a volume at 02:27 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 9, 8:44 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 9, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.5 hours before the alert went out and 151 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
- 9 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1268 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
216
WUUS54 KTSA 100227
SVRTSA
ARC033-143-OKC001-021-135-100315-
/O.NEW.KTSA.SV.W.0047.210410T0227Z-210410T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
927 PM CDT Fri Apr 9 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Northwestern Crawford County in northwestern Arkansas...
Southwestern Washington County in northwestern Arkansas...
Northeastern Sequoyah County in east central Oklahoma...
Adair County in northeastern Oklahoma...
Southeastern Cherokee County in east central Oklahoma...
* Until 1015 PM CDT.
* At 927 PM CDT, a severe thunderstorm was located over Bunch, moving
east at 30 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...
Stilwell... Cedarville...
Natural Dam... Alma...
West Fork... Lincoln...
Marble City... Rudy...
Adair State Park... Maryetta...
Blackburn... Lee Creek...
Bunch... Baron...
Short... Eldon...
Devils Den State Park... Strickler...
Figure Five... Canehill...
This includes the following highways,
Interstate 40 in Arkansas near mile marker 12.
Interstate 49 between mile markers 22 and 27, and between mile
markers 37 and 53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3559 9489 3594 9484 3594 9416 3548 9423
TIME...MOT...LOC 0227Z 276DEG 28KT 3570 9478
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
495
WWUS54 KTSA 100244
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
944 PM CDT Fri Apr 9 2021
OKC021-100254-
/O.CAN.KTSA.SV.W.0047.000000T0000Z-210410T0315Z/
Cherokee OK-
944 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHEROKEE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northeastern and east central Oklahoma. A Severe Thunderstorm Watch
also remains in effect until 200 AM CDT for northwestern Arkansas.
LAT...LON 3548 9423 3559 9489 3564 9486 3564 9481
3572 9481 3594 9466 3594 9416
TIME...MOT...LOC 0244Z 279DEG 26KT 3569 9462
$$
ARC033-143-OKC001-135-100315-
/O.CON.KTSA.SV.W.0047.000000T0000Z-210410T0315Z/
Crawford AR-Washington AR-Sequoyah OK-Adair OK-
944 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHWESTERN CRAWFORD...SOUTHWESTERN WASHINGTON...NORTHEASTERN
SEQUOYAH AND SOUTHERN ADAIR COUNTIES...
At 944 PM CDT, a severe thunderstorm was located 7 miles east of
Bunch, moving east at 30 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...
Stilwell... Cedarville...
Natural Dam... Alma...
West Fork... Lincoln...
Marble City... Rudy...
Adair State Park... Maryetta...
Blackburn... Lee Creek...
Bunch... Baron...
Short... Devils Den State Park...
Strickler... Figure Five...
Canehill... Uniontown...
This includes the following highways,
Interstate 40 in Arkansas near mile marker 12.
Interstate 49 between mile markers 22 and 27, and between mile
markers 37 and 53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3548 9423 3559 9489 3564 9486 3564 9481
3572 9481 3594 9466 3594 9416
TIME...MOT...LOC 0244Z 279DEG 26KT 3569 9462
HAIL...1.00IN
WIND...60MPH
$$283
WWUS54 KTSA 100258
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
958 PM CDT Fri Apr 9 2021
ARC033-143-OKC001-135-100315-
/O.CON.KTSA.SV.W.0047.000000T0000Z-210410T0315Z/
Crawford AR-Washington AR-Sequoyah OK-Adair OK-
958 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHWESTERN CRAWFORD...SOUTHWESTERN WASHINGTON...NORTHEASTERN
SEQUOYAH AND SOUTHEASTERN ADAIR COUNTIES...
At 958 PM CDT, a severe thunderstorm was located 4 miles west of
Natural Dam, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations in or near the path include...
Cedarville... Natural Dam...
Alma... West Fork...
Rudy... Devils Den State Park...
Strickler... Blackburn...
Figure Five... Lee Creek...
Short... Clyde...
Uniontown... Hogeye...
Odell... Morrow...
Woolsey...
This includes the following highways,
Interstate 40 in Arkansas near mile marker 12.
Interstate 49 between mile markers 22 and 27, and between mile
markers 37 and 53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3548 9423 3559 9486 3593 9436 3594 9416
TIME...MOT...LOC 0258Z 283DEG 29KT 3565 9448
HAIL...1.00IN
WIND...60MPH
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 8:02 PM CDT | Severe Thunderstorm Warning | TSA | Benton | 29 min |
| Apr 9, 9:00 PM CDT | Special Weather Statement | TSA | Benton, Washington | 30 min |
| Apr 9, 10:07 PM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 23 min |
| Apr 9, 10:12 PM CDT | Special Weather Statement | TSA | Crawford, Franklin, Sebastian | 33 min |
| Apr 9, 10:33 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 42 min |
| Apr 9, 7:02 PM CDT | Special Weather Statement | TSA | Rogers | 28 min |
| Apr 9, 7:09 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 51 min |
| Apr 9, 7:12 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 48 min |
| Apr 9, 7:24 PM CDT | Special Weather Statement | TSA | Tulsa | 36 min |
| Apr 9, 7:29 PM CDT | Special Weather Statement | TSA | Ottawa | 31 min |
| Apr 9, 7:38 PM CDT | Special Weather Statement | TSA | Craig, Nowata | 37 min |
| Apr 9, 7:38 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner | 52 min |
| Apr 9, 7:41 PM CDT | Tornado Warning | TSA | Creek, Tulsa | 20 min |
| Apr 9, 7:52 PM CDT | Special Weather Statement | TSA | Cherokee, Mayes | 23 min |
| Apr 9, 7:56 PM CDT | Special Weather Statement | TSA | Okfuskee | 34 min |
| Apr 9, 8:28 PM CDT | Special Weather Statement | TSA | Cherokee, Mayes | 32 min |
| Apr 9, 8:29 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 46 min |
| Apr 9, 8:49 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 41 min |
| Apr 9, 8:59 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg, Pushmataha | 50 min |
| Apr 9, 9:03 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, McIntosh, Muskogee, Sequoyah | 42 min |
| Apr 9, 9:24 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 66 min |
| Apr 9, 9:30 PM CDT | Special Weather Statement | TSA | Muskogee | 30 min |
| Apr 9, 9:35 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 55 min |
| Apr 9, 9:37 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, LeFlore, Muskogee, Sequoyah | 38 min |
| Apr 9, 9:58 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, LeFlore, Pushmataha | 47 min |
| Apr 9, 10:24 PM CDT | Special Weather Statement | TSA | LeFlore | 36 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2021Severe 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.