Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 16, NWS Norman, OK

February 24, 2001Hardeman County, Texas; Jackson County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Feb 24, 2001, 3:53 AM CST for Hardeman County, Texas; Jackson County, Oklahoma. It was in force for 52 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: Feb 24, 2001, 3:53 AM CST (09:53 UTC)
Expired: Feb 24, 2001, 4:45 AM CST
In force: 52 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Jackson County, OK, Hardeman County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 24, 12:30 AM CST	Severe Thunderstorm Watch	SPC	6 hr
Feb 24, 3:30 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 9.9 hours before the alert went out and 216 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 174 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 240954
SVROKC
OKC065-TXC197-241045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
353 AM CST SAT FEB 24 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HARDEMAN COUNTY IN NORTHERN TEXAS
  JACKSON COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 445 AM CST

* AT 350 AM CST...DOPPLER RADAR DETECTED A LINE OF SEVERE
  THUNDERSTORMS FROM 6 MILES NORTH OF QUANAH TO 13 MILES SOUTHWEST OF
  QUANAH...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE ALTUS AIR FORCE BASE...ALTUS...
  BLAIR...CHILLICOTHE...ELDORADO...ELMER...MARTHA...MEDICINE MOUND...
  OLUSTEE AND QUANAH

HAIL UP TO 1 INCH IN DIAMETER IS LIKELY WITH THESE STORMS.

LAT...LON 3443 9976 3414 9986 3410 9950 3438 9949
          3453 9924 3481 9932

11

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 24, 3:30 AM CST, 23 minutes earlier.

Area forecast discussion, Feb 24, 3:30 AM CST, 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
330 AM CST SAT FEB 24 2001

NOT MUCH TIME FOR DISCUSSION THIS MRNG WITH SVR WX ALREADY IN
PROGRESS IN PARTS OF THE FA. STG NEG TILT UPR SYS WILL EJECT FROM
THE SRN ROCKIES INTO THE PLAINS DURING THE DAY. MEANWHILE WARM FRONT
ALG THE RED RIVER ERLY THIS MRNG CONTS TO LIFT SLOWLY NWD WITH 60+
DEWPOPINT AIR S OF THIS BNDRY. BEST SVR THRT THIS MRNG WILL LIKELY
BE IN VNCTY OF THE WARM FRONT ACRS N TX AND SRN OK ZONES AS SQUALL
INTERSECTS THIS BNDRY. SVR WX THRT WILL SHIFT INTO ERN SECS OF THE
FA LATER TODAY AS WARM FRONT CONTS TO LIFT NWD AND SFC LO
STRENGTHENS AND MOVES EWD. WILL CONT FFA INTO THE DAY FOR MUCH OF
THE AREA. ALTHOUGH STORMS WILL BE REL FAST HEAVY RAIN STILL A
THREAT...IN ADDITION RAINFALL ACROSS THE AREA THURSDAY NIGHT AND
FRIDAY HAS LEFT FFG VALUES PRETTY LOW. NEXT PROB TO DEAL WITH IN THE
FIRST PD WILL BE STG SWLY WINDS EXPECTED TO DEVELOP BEHIND THE DRY
LINE. DEEPENING SFC LO EXPECTED TO MOVE FROM SWRN KS THIS MRNG INTO
NERN KS BY THE END OF THE DAY. SFC GRAD WILL TIGHTEN ACRS THE FA. IN
ADDITION STG WINDS ALOFT...H8 WINDS OF 40 TO 50 KTS AND H7 WINDS OF
50 TO 70 KTS MAY MIX DOWN DURING THE AFTN. WILL INCLUDE WIND ADVY
FOR ALL ZONES ALTHO ERN AREAS WILL NOT LIKELY SEE THE STRONG WINDS
UNTIL AFTN. DAY SHIFT WILL NOT TO MONITOR FOR PSBL UPGRADE TO HI
WIND WRNG. ACTIVITY SHUD BE EAST OFTHE FA BY THIS EVENING SO WILL LV
FCST DRY FROM TONIGHT INTO SUNDAY NIGHT. RETURN FLOW AND AN APCHG
UPR SYS BRING A THRT OF PRECIP MONDAY WITH A CANADIAN CDFNT EXPECTED
TO PUNCH INTO THE AREA TUESDAY. WILL CONT WITH MENTION OF SNOW FOR
NRN SECS TUESDAY WITH RAIN IN THE S. NUMBERS TO FOLLOW LATER.

FCSTID = 2
OKC   64  35  57  41 / 100   0   0  10
HBR   67  34  58  41 /  40   0   0  10
SPS   70  37  63  43 /  80   0   0  10
GAG   59  28  55  35 /  60  10   0  10
PNC   62  32  54  39 / 100   0   0  10
DUA   70  40  62  42 / 100   0   0  10

.OUN...
OK...FLASH FLOOD WATCH TODAY
OKZ007>008-012>013-018>020-023>032-037>048-050>052.
     WIND ADVISORY TODAY OKZ004>052.
TX...FLOOD WATCH TTHIS MORNING TXZ086-089-090.
     WIND ADVISORY TODAY TXZ083>090.

In the hours before

Local storm report, Feb 24, 3:18 AM CST, 35 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
318 AM CST SAT FEB 24 2001

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

0256 AM    MANGUM                    OK   .88 INCH HAIL
02/24/01   GREER                          SHERIFF DEPT.

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 2:10 AM CST	Severe Thunderstorm Warning	OUN	Hardeman	50 min
Feb 24, 8:11 AM CST	Severe Thunderstorm Warning	OUN	Archer	49 min
Feb 24, 8:32 AM CST	Severe Thunderstorm Warning	OUN	Clay	43 min
Feb 24, 2:10 AM CST	Severe Thunderstorm Warning	OUN	Greer	50 min
Feb 24, 5:12 AM CST	Severe Thunderstorm Warning	OUN	Kay, Noble	48 min
Feb 24, 9:28 AM CST	Severe Thunderstorm Warning	OUN	Lincoln	47 min
Feb 24, 9:46 AM CST	Severe Thunderstorm Warning	OUN	Coal	44 min
Feb 24, 10:01 AM CST	Severe Thunderstorm Warning	OUN	Love, Marshall	44 min
Feb 24, 10:18 AM CST	Severe Thunderstorm Warning	OUN	Johnston, Pontotoc	42 min
Feb 24, 10:49 AM CST	Severe Thunderstorm Warning	OUN	Bryan, Marshall	41 min
Feb 24, 10:57 AM CST	Severe Thunderstorm Warning	OUN	Atoka, Coal	48 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Severe Thunderstorm Warnings in Oklahoma, 2001 Every 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.