Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 176, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 15, 2021, 3:53 AM CDT for 4 counties in Oklahoma. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 15, 2021, 3:53 AM CDT (08:53 UTC)
- Expired
- Oct 15, 2021, 4:45 AM CDT
- In force
- 52 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adair County, OK, Cherokee County, OK, Muskogee County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 58 km from the middle of the area, began a volume at 08:56 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 15, 4:20 AM CDT | TSTM WND DMG | 1 Nne Vian, OK | LARGE TREE LIMB BROKEN ON DWIGHT MISSION ROAD. RELAYED VIA TWITTER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 8.9 hours before the alert went out and 173 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
- 130 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
516
WUUS54 KTSA 150853
SVRTSA
OKC001-021-101-135-150945-
/O.NEW.KTSA.SV.W.0176.211015T0853Z-211015T0945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
353 AM CDT Fri Oct 15 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Sequoyah County in east central Oklahoma...
Adair County in northeastern Oklahoma...
Southern Cherokee County in east central Oklahoma...
Northeastern Muskogee County in east central Oklahoma...
* Until 445 AM CDT.
* At 353 AM CDT, severe thunderstorms were located along a line
extending from 5 miles east of Fort Gibson to 3 miles northeast of
Greenleaf State Park to 4 miles east of Warner, moving east 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...
Tahlequah... Sallisaw...
Stilwell... Westville...
Vian... Gore...
Webbers Falls... Marble City...
Braggs... Brushy...
Adair State Park... Christie...
Greenleaf State Park... Pumpkin Center...
Maryetta... Cookson...
Brushy Lake State Park... Cherokee Landing State Park...
Bunch... Lake Tenkiller State Park...
This includes Interstate 40 in Oklahoma between mile markers 288 and
299.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3549 9445 3545 9503 3546 9505 3545 9509
3562 9520 3587 9518 3605 9454
TIME...MOT...LOC 0853Z 260DEG 40KT 3581 9516 3564 9511 3548 9523
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$2 follow-up statements
663
WWUS54 KTSA 150913
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
413 AM CDT Fri Oct 15 2021
OKC101-150923-
/O.CAN.KTSA.SV.W.0176.000000T0000Z-211015T0945Z/
Muskogee OK-
413 AM CDT Fri Oct 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MUSKOGEE COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3549 9445 3545 9501 3546 9506 3546 9508
3557 9513 3565 9506 3589 9508 3605 9454
TIME...MOT...LOC 0913Z 260DEG 40KT 3584 9493 3567 9488 3551 9500
$$
OKC001-021-135-150945-
/O.CON.KTSA.SV.W.0176.000000T0000Z-211015T0945Z/
Sequoyah OK-Adair OK-Cherokee OK-
413 AM CDT Fri Oct 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR NORTHERN SEQUOYAH...ADAIR AND SOUTHEASTERN CHEROKEE COUNTIES...
At 413 AM CDT, severe thunderstorms were located along a line
extending from 5 miles southeast of Tahlequah to 3 miles southeast of
Cookson to near Vian, moving east 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...
Tahlequah... Sallisaw...
Stilwell... Westville...
Vian... Gore...
Marble City... Eldon...
Brushy... Adair State Park...
Proctor... Christie...
Maryetta... Cookson...
Brushy Lake State Park... Cherokee Landing State Park...
Bunch... Lake Tenkiller State Park...
Baron... Short...
This includes Interstate 40 in Oklahoma between mile markers 289 and
299.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3549 9445 3545 9501 3546 9506 3546 9508
3557 9513 3565 9506 3589 9508 3605 9454
TIME...MOT...LOC 0913Z 260DEG 40KT 3584 9493 3567 9488 3551 9500
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$542
WWUS54 KTSA 150936
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
436 AM CDT Fri Oct 15 2021
OKC001-021-135-150946-
/O.EXP.KTSA.SV.W.0176.000000T0000Z-211015T0945Z/
Sequoyah OK-Adair OK-Cherokee OK-
436 AM CDT Fri Oct 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SEQUOYAH...ADAIR AND
SOUTHEASTERN CHEROKEE COUNTIES WILL EXPIRE AT 445 AM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tulsa.
LAT...LON 3549 9445 3545 9501 3546 9506 3546 9508
3557 9513 3565 9506 3589 9508 3605 9454
TIME...MOT...LOC 0936Z 260DEG 40KT 3588 9467 3571 9462 3555 9474
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 10:27 PM CDT | Dense Fog Advisory | TSA | Adair, Cherokee, Delaware | 5 hr |
| Oct 15, 1:41 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 49 min |
| Oct 15, 1:44 AM CDT | Special Weather Statement | TSA | Creek, Tulsa | 46 min |
| Oct 15, 2:26 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 49 min |
| Oct 15, 2:29 AM CDT | Special Weather Statement | TSA | Rogers, Tulsa | 46 min |
| Oct 15, 2:37 AM CDT | Areal Flood Advisory | TSA | Creek, Osage, Tulsa | 3 hr |
| Oct 15, 2:51 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Okmulgee | 39 min |
| Oct 15, 3:13 AM CDT | Special Weather Statement | TSA | Mayes, Rogers, Wagoner | 47 min |
| Oct 15, 3:29 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, McIntosh, Muskogee, Wagoner | 46 min |
| Oct 15, 3:32 AM CDT | Areal Flood Advisory | TSA | Muskogee, Okmulgee, Tulsa, Wagoner | 118 min |
| Oct 15, 4:02 AM CDT | Special Weather Statement | TSA | Delaware | 43 min |
| Oct 15, 4:35 AM CDT | Special Weather Statement | TSA | Adair, Sequoyah | 55 min |
| Oct 15, 7:51 AM CDT | Areal Flood Advisory | TSA | Haskell, LeFlore, Muskogee, Sequoyah | 2 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.