Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 359, NWS Tulsa, OK

August 26, 2001LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 26, 2001, 5:14 PM CDT for LeFlore County, Oklahoma. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Aug 26, 2001, 5:14 PM CDT (22:14 UTC)
Expired
Aug 26, 2001, 6:15 PM CDT
In force
61 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County LeFlore County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.2 hours before the alert went out and 250 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 12:00Z on 2001-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2001-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -85 square meters per square second.1939Sfc1 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
11 J/kg
Mixed-layer CIN
-348 J/kg
Mixed-layer LCL
1443 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-85 m²/s²
0-3 km storm-relative helicity
-31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

859 
WUUS54 KTSA 262214
SVRTUL
OKC079-262315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
514 PM CDT SUN AUG 26 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 615 PM CDT

* AT 514 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2
  MILES WEST OF BIG CEDAR...MOVING WEST AT 5 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WHITESBORO...
  MUSE AND BIG CEDAR.

HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 70 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

THIS IS A DANGEROUS STORM. IF YOU ARE NEAR ITS PATH YOU SHOULD
PREPARE FOR VERY LARGE HAIL AND STRONG DAMAGING STRAIGHT LINE WINDS.
SEEK SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS

LAT...LON 3454 9464 3471 9458 3484 9493 3460 9495

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 26, 3:50 PM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Aug 26, 3:50 PM CDT, 1 hour 24 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
350 PM CDT SUN AUG 26 2001

CONVECTION FIRING IN FAR SOUTHEAST OKLAHOMA AS EXPECTED THIS
AFTERNOON. UPPER SYSTEM ACROSS WEST TEXAS WILL INCREASE LIFT ACROSS
THE SOUTHERN PART OF THE FORECAST AREA LATER TONIGHT AND MONDAY
MORNING SO WILL NEED TO CONTINUE RAIN CHANCES THROUGH MONDAY WITH
ACTIVITY POSSIBLY REACHING AS FAR NORTH AS MCALESTER AND FORT SMITH
LATER TONIGHT AND IN THE MORNING.

CONSIDERABLE HIGH LEVEL CLOUDINESS WILL DECREASE FROM NORTH TO SOUTH
LATE TONIGHT AND MONDAY BUT MAY NEVER TOTALLY CLEAR FAR SOUTHEAST
OKLAHOMA. MOISTURE WILL REMAIN JUST SOUTH OF THE FORECAST AREA
TUESDAY AND BEYOND AS UPPER LOW WOBBLES AROUND TEXAS. THE 12Z AVN
WANTS TO BRING THIS MOISTURE BACK NORTH ACROSS THE FORECAST AREA
THURSDAY AND BEYOND BUT WILL NOT INTRODUCE POPS AT THIS POINT IN
TIME AS OTHER MODELS ARE NOT QUITE AS GUNGHO ON THIS SCENARIO.

THE COLD FRONT THAT LOOKED SO PROMISING 24 HOURS AGO FOR LATE THIS
WEEK NOW LOOKS LIKE IT WILL BE ANOTHER NO-SHOW. THE MRF STILL TRIES
TO BRING A FRONT THROUGH SATURDAY BUT OTHER MEDIUM RANGE MODELS HAVE
TOTALLY BACKED OFF ANY FRONT SO WILL KEEP IT HOT AND DRY THROUGH
NEXT WEEKEND NOW.

TEMPERATURES WILL BE TRICKY IN THE SOUTH THE NEXT FEW
DAYS...ESPECIALLY MONDAY. AM COUNTING ON SOME AFTERNOON SUN TO ALLOW
THEM TO REACH THE 90S. THE NORTHWEST PART OF THE FORECAST AREA WILL
BE HOTTEST ALL WEEK WITH THE SOUTHEAST COOLEST AS THEY WILL BE
FURTHEST REMOVED FROM THE LOW LEVEL THERMAL RIDGE. STAYED CLOSE TO
GUIDANCE TEMPERATURES EXCEPT WENT WARMER THAN GUIDANCE FOR MAXIMUMS
IN NORTHEAST OKLAHOMA.

FCSTID = 5
TUL   70  95  69  96 /  10   0   0   0
FSM   70  93  69  95 /  30  20  10  10
MLC   69  93  68  94 /  30  30  10  10
BVO   64  97  63  98 /  10   0   0   0
FYV   60  90  60  92 /  10  10   0   0
BYV   60  90  60  92 /  10  10   0   0
MIO   65  92  65  94 /  10   0   0   0
MKO   69  95  69  96 /  10   0   0   0
F10   69  95  69  96 /  10   0   0   0
HHW   72  90  70  92 /  50  40  10  10

.TSA...
AR...NONE.
OK...NONE.

PLATE

In the hours before

Local storm report, Aug 26, 4:53 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
453 PM CDT SUN AUG 26 2001

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0815 PM    2 N TERLTON               OK    WIND DAMAGE
08/25/01   PAWNEE                          LARGE LIMBS AND SOME
                                           SMALL TREES BLOWN DOWN

0829 PM    MOUNDS                    OK    .75 INCH HAIL
08/25/01   CREEK

0947 PM    GROVE                     OK    1 INCH HAIL
08/25/01   DELAWARE

1030 PM    MUSKOGEE                  OK    .75 INCH HAIL
08/25/01   MUSKOGEE

1100 PM    HULBERT                   OK    WIND DAMAGE
08/25/01   CHEROKEE                        SEVERAL LARGE LIMBS
                                           BLOWN DOWN

1133 PM    WELLING                   OK    WIND DAMAGE
08/25/01   CHEROKEE                        SEVERAL LARGE LIMBS
                                           BLOWN DOWN. SATELLITE
                                           DISH BLOWN OFF HOUSE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 7:49 PM CDTSevere Thunderstorm WarningTSACreek41 min
Aug 25, 7:56 PM CDTSevere Thunderstorm WarningTSAPawnee49 min
Aug 25, 8:06 PM CDTSevere Thunderstorm WarningTSAOkfuskee54 min
Aug 25, 8:20 PM CDTSevere Thunderstorm WarningTSACreek40 min
Aug 25, 9:03 PM CDTSevere Thunderstorm WarningTSADelaware57 min
Aug 25, 9:25 PM CDTSevere Thunderstorm WarningTSAOkmulgee50 min
Aug 25, 9:35 PM CDTSevere Thunderstorm WarningTSATulsa40 min
Aug 25, 9:41 PM CDTSevere Thunderstorm WarningTSARogers, Wagoner49 min
Aug 25, 9:41 PM CDTSevere Thunderstorm WarningTSAMuskogee49 min
Aug 25, 9:58 PM CDTSevere Thunderstorm WarningTSADelaware62 min
Aug 25, 10:16 PM CDTSevere Thunderstorm WarningTSAMayes59 min
Aug 25, 10:30 PM CDTSevere Thunderstorm WarningTSACherokee, Muskogee45 min
Aug 25, 11:27 PM CDTSevere Thunderstorm WarningTSAAdair48 min
Aug 25, 11:31 PM CDTSevere Thunderstorm WarningTSACherokee44 min
Aug 25, 11:53 PM CDTSevere Thunderstorm WarningTSASequoyah52 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001

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.