Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 175, NWS Tulsa, OK

October 15, 20214 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 15, 2021, 3:29 AM CDT for 4 counties in Oklahoma. 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
Oct 15, 2021, 3:29 AM CDT (08:29 UTC)
Expired
Oct 15, 2021, 4:15 AM CDT
In force
46 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cherokee County, OK, McIntosh County, OK, Muskogee County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 82 km from the middle of the area, began a volume at 08:30 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

Norman, OK (KOUN), launched 00:00Z, 8.5 hours before the alert went out and 194 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.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2021-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 421 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2021-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
421 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1034 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

947 
WUUS54 KTSA 150829
SVRTSA
OKC021-091-101-145-150915-
/O.NEW.KTSA.SV.W.0175.211015T0829Z-211015T0915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
329 AM CDT Fri Oct 15 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northern McIntosh County in southeastern Oklahoma...
  Southeastern Wagoner County in northeastern Oklahoma...
  Southwestern Cherokee County in east central Oklahoma...
  Muskogee County in east central Oklahoma...

* Until 415 AM CDT.

* At 329 AM CDT, severe thunderstorms were located along a line
  extending from 2 miles southeast of Taft to Oktaha to 4 miles north
  of Raiford, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Trained weather spotters.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations in or near the path include...
  Muskogee...                       Tahlequah...
  Fort Gibson...                    Checotah...
  Warner...                         Porum...
  Webbers Falls...                  Oktaha...
  Braggs...                         Taft...
  Council Hill...                   Rentiesville...
  Stidham...                        Greenleaf State Park...
  Pumpkin Center...                 Vivian...
  Lake Eufaula State Park...        Keefeton...
  Wainwright...                     Summit...

This includes Interstate 40 in Oklahoma between mile markers 252 and
288.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3559 9562 3577 9564 3592 9497 3564 9503
      3564 9513 3553 9513 3546 9507 3541 9508
      3537 9512 3537 9516 3535 9514 3535 9517
      3532 9518 3531 9537 3533 9540 3531 9543
      3527 9589
TIME...MOT...LOC 0829Z 261DEG 40KT 3573 9553 3559 9548 3533 9579 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$
2 follow-up statements
268 
WWUS54 KTSA 150855
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
355 AM CDT Fri Oct 15 2021

OKC021-091-101-145-150915-
/O.CON.KTSA.SV.W.0175.000000T0000Z-211015T0915Z/
McIntosh OK-Wagoner OK-Cherokee OK-Muskogee OK-
355 AM CDT Fri Oct 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 AM CDT
FOR NORTHEASTERN MCINTOSH...SOUTHEASTERN WAGONER...SOUTHWESTERN
CHEROKEE AND EASTERN MUSKOGEE COUNTIES...

At 355 AM CDT, severe thunderstorms were located along a line
extending from 3 miles east of Fort Gibson to 2 miles south of
Pumpkin Center to 6 miles southeast of Checotah, 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...
Muskogee...                       Tahlequah...
Fort Gibson...                    Warner...
Porum...                          Webbers Falls...
Oktaha...                         Braggs...
Rentiesville...                   Greenleaf State Park...
Pumpkin Center...                 Keefeton...
Summit...                         

This includes Interstate 40 in Oklahoma between mile markers 266 and
288.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3592 9497 3564 9503 3564 9513 3553 9513
      3546 9507 3541 9508 3533 9540 3536 9553
      3582 9542
TIME...MOT...LOC 0855Z 258DEG 40KT 3581 9518 3567 9513 3541 9544 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$
972 
WWUS54 KTSA 150911
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
411 AM CDT Fri Oct 15 2021

OKC021-091-101-145-150921-
/O.EXP.KTSA.SV.W.0175.000000T0000Z-211015T0915Z/
McIntosh OK-Wagoner OK-Cherokee OK-Muskogee OK-
411 AM CDT Fri Oct 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCINTOSH...
SOUTHEASTERN WAGONER...SOUTHWESTERN CHEROKEE AND EASTERN MUSKOGEE
COUNTIES WILL EXPIRE AT 415 AM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tulsa.

LAT...LON 3592 9497 3564 9503 3564 9513 3553 9513
      3546 9507 3541 9508 3533 9540 3536 9553
      3582 9542
TIME...MOT...LOC 0911Z 261DEG 40KT 3584 9497 3570 9492 3544 9523 

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 14, 10:27 PM CDTDense Fog AdvisoryTSAAdair, Cherokee, Delaware5 hr
Oct 15, 1:41 AM CDTSevere Thunderstorm WarningTSACreek, Okfuskee49 min
Oct 15, 1:44 AM CDTSpecial Weather StatementTSACreek, Tulsa46 min
Oct 15, 2:26 AM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee49 min
Oct 15, 2:29 AM CDTSpecial Weather StatementTSARogers, Tulsa46 min
Oct 15, 2:37 AM CDTAreal Flood AdvisoryTSACreek, Osage, Tulsa3 hr
Oct 15, 2:51 AM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okmulgee39 min
Oct 15, 3:13 AM CDTSpecial Weather StatementTSAMayes, Rogers, Wagoner47 min
Oct 15, 3:32 AM CDTAreal Flood AdvisoryTSAMuskogee, Okmulgee, Tulsa, Wagoner118 min
Oct 15, 3:53 AM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, Muskogee, Sequoyah52 min
Oct 15, 4:02 AM CDTSpecial Weather StatementTSADelaware43 min
Oct 15, 4:35 AM CDTSpecial Weather StatementTSAAdair, Sequoyah55 min
Oct 15, 7:51 AM CDTAreal Flood AdvisoryTSAHaskell, LeFlore, Muskogee, Sequoyah2 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.