Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 86, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 18, 2021, 4:07 PM CDT for LeFlore County, Pushmataha County, Oklahoma. It was in force for 38 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
- May 18, 2021, 4:07 PM CDT (21:07 UTC)
- Expired
- May 18, 2021, 4:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties LeFlore County, OK, Pushmataha County, OK
The radar
The Western Arkansas radar (KSRX), 77 km from the middle of the area, began a volume at 21:09 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 |
|---|---|---|---|
| May 18, 3:51 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 9.1 hours before the alert went out and 259 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
- 334 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
816
WUUS54 KTSA 182107
SVRTSA
OKC079-127-182145-
/O.NEW.KTSA.SV.W.0086.210518T2107Z-210518T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
407 PM CDT Tue May 18 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Northeastern Pushmataha County in southeastern Oklahoma...
Southern Le Flore County in southeastern Oklahoma...
* Until 445 PM CDT.
* At 407 PM CDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Albion to 4 miles northwest of
Octavia to 9 miles west of Hatfield, moving northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations in or near the path include...
Heavener... Talihina...
Octavia... Talimena State Park...
Heavener Runestone State Park... Lake Wister State Park...
Whitesboro... Muse...
Big Cedar... Hodgen...
Summerfield... Honobia...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3452 9510 3486 9502 3486 9500 3494 9500
3495 9445 3451 9447
TIME...MOT...LOC 2107Z 204DEG 39KT 3456 9504 3458 9476 3445 9454
HAIL...<.75IN
WIND...60MPH
$$2 follow-up statements
125
WWUS54 KTSA 182122
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
422 PM CDT Tue May 18 2021
OKC127-182132-
/O.CAN.KTSA.SV.W.0086.000000T0000Z-210518T2145Z/
Pushmataha OK-
422 PM CDT Tue May 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PUSHMATAHA COUNTY
IS CANCELLED...
The storms which prompted the warning has moved out of the warned
area. Therefore the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southeastern Oklahoma.
LAT...LON 3456 9494 3468 9493 3468 9505 3485 9502
3486 9500 3494 9500 3495 9445 3451 9447
TIME...MOT...LOC 2122Z 204DEG 39KT 3470 9497 3472 9469 3459 9446
$$
OKC079-182145-
/O.CON.KTSA.SV.W.0086.000000T0000Z-210518T2145Z/
Le Flore OK-
422 PM CDT Tue May 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHERN LE FLORE COUNTY...
At 422 PM CDT, severe thunderstorms were located along a line
extending from 4 miles west of Whitesboro to 5 miles north of Big
Cedar to 4 miles southwest of Mountain Fork, moving northeast at 45
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations in or near the path include...
Heavener... Talimena State Park...
Heavener Runestone State Park... Lake Wister State Park...
Whitesboro... Muse...
Big Cedar... Hodgen...
Summerfield...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3456 9494 3468 9493 3468 9505 3485 9502
3486 9500 3494 9500 3495 9445 3451 9447
TIME...MOT...LOC 2122Z 204DEG 39KT 3470 9497 3472 9469 3459 9446
HAIL...<.75IN
WIND...60MPH
$$277
WWUS54 KTSA 182141
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
441 PM CDT Tue May 18 2021
OKC079-182150-
/O.EXP.KTSA.SV.W.0086.000000T0000Z-210518T2145Z/
Le Flore OK-
441 PM CDT Tue May 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN LE FLORE COUNTY WILL
EXPIRE AT 445 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire. However gusty winds
and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southeastern Oklahoma.
LAT...LON 3456 9494 3468 9493 3468 9505 3485 9502
3486 9500 3494 9500 3495 9445 3451 9447
TIME...MOT...LOC 2140Z 204DEG 39KT 3487 9488 3489 9460 3476 9437
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 2:19 PM CDT | Special Weather Statement | TSA | Choctaw | 26 min |
| May 18, 2:47 PM CDT | Special Weather Statement | TSA | Pushmataha | 43 min |
| May 18, 3:30 PM CDT | Special Weather Statement | TSA | Pushmataha | 45 min |
| May 18, 3:57 PM CDT | Special Weather Statement | TSA | LeFlore | 48 min |
| May 18, 5:18 PM CDT | Special Weather Statement | TSA | Sequoyah | 42 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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.