Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 154, NWS Amarillo, TX

July 28, 2002Cimarron County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 28, 2002, 5:32 PM CDT for Cimarron County, Oklahoma. It was in force for 28 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: Jul 28, 2002, 5:32 PM CDT (22:32 UTC)
Expired: Jul 28, 2002, 6:00 PM CDT
In force: 28 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Cimarron County, OK

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.5 hours before the alert went out and 169 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: 86 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 2126 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 66 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.

000 
WUUS54 KAMA 282232 CCA
SVRAMA
OKC025-282300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
530 PM CDT SUN JUL 28 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING HAS BEEN EXTENDED FOR...
  EASTERN CIMARRON COUNTY IN THE OKLAHOMA PANHANDLE

* UNTIL 600 PM CDT

* AT 530 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTH OF GRIGGS...OR ABOUT 22 MILES
  EAST OF BOISE CITY...MOVING SOUTHHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  KEYES AND GRIGGS

LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH
THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER.

LAT...LON 3673 10234 3651 10236 3650 10207 3698 10206

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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 2:30 PM CDT, 3 hours 2 minutes earlier.

Area forecast discussion, Jul 28, 2:30 PM CDT, 3 hours 2 minutes before

TEXAS/OKLAHOMA PANHANDLES AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
230 PM CDT SUN JUL 28 2002

THINGS ARE SHAPING UP TO BE MUCH QUIETER THAN LAST NGT.  THE SHRTWV
TROF RESPONSIBLE FOR THE SVR WX LAST NGT IS NOW MOVG EWD INTO OK.
THE WK SFC TROF LYING NE TO SW FM NR KGUY INTO THE SWRN TX PNHDL TO
NR KCVS WL RMN NRLY STNRY TNGT.  ALTHOUGH ISOLD CNVTN MAY DVLP IN
THE VCNTY OF THIS SFC TROF TNGT...FEEL THAT THE COVERAGE WL BE LESS
THAN LAST NGT.  WHEREAS YDA THERE WAS THE SHRTWV TROF PUSHING OUT
OF NM...TNGT THERE IS NO UPR LVL SUPPORT BHND THE SHRTWV TROF
CURRENTLY MOVG INTO OK...ONLY NVA/SUBSIDENCE.  TMRW IS A DIFFERENT
STORY AS SOME WK SHRTWV ENERGY FCSTD TO EJECT EWD OUT OF NM DURING
THE LT AFTN AND INTO THE EVE HRS.  ALSO...WK SFC TROF NOW LYING
ACRS WRN SXNS OF THE FA WL MERGE WITH WK FNTL BNDRY LTR TNGT AND
INTO MON.  FNTL BNDRY FCSTD TO MOV ACRS NWRN SXNS OF THE PNHDLS LT
TNGT/ERY MON MRNG AND THEN ACRS THE RMNDR OF THE FA BY MIDDAY OR SO
TMRW.  WL INCR POPS SLGTLY MON AFTN AND MON NGT DUE TO FNTL
BNDRY/SHRTWV ENERGY.

UPR RDG BUILDS BACK OVR THE SWRN STATES/SRN RCKYS/SRN PLNS STATES
BY TUE...HWVR WKNS IN THE UPR FLOW WITH INVERTED UPR TROF OVR
WRN/CNTRL TX TUE ALG WITH SHRTWV ENERGY RIDING AROUND THE INVERTED
UPR TROF WL AT LEAST WARRANT SLGT CHC POPS TUE THRU FRI MAINLY
DURING THE AFTN AND EVE HRS.  UPR RDG TAKES BACK CONTROL AND BUILDS
IN OVR THE CNTRL/SRN PLNS STATES BY THE WKND AND SHOULD SEE DRIER
AND MUCH WARMER CONDITIONS SAT AND SUN.

FCSTID = 11

AMARILLO    68 90 68 92 /  20 20 30 20
BEAVER      68 92 67 94 /  20 20 30 20
BOISE CITY  62 89 64 91 /  20 20 30 20
BORGER      67 92 70 92 /  20 20 30 20
BOYS RANCH  67 90 68 92 /  20 20 30 20
CANYON      68 93 68 93 /  20 20 30 20
CLARENDON   70 94 69 94 /  20 20 30 20
DALHART     64 91 66 91 /  20 20 30 20
GUYMON      68 92 67 94 /  20 20 30 20
HEREFORD    68 93 68 93 /  20 20 30 20
LIPSCOMB    68 92 67 94 /  20 20 30 20
PAMPA       67 92 67 92 /  20 20 30 20
SHAMROCK    72 94 68 96 /  20 20 30 20
WELLINGTON  72 95 70 97 /  20 20 30 20

.AMA...
TX...NONE.
OK...NONE.

In the hours before

Local storm report, Jul 28, 12:51 PM CDT, 4 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
1251 PM CDT SUN JUL 28 2002

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

0805 PM    17N STINNETT              TX   WIND DAMAGE
07/27/02   HUTCHINSON                     SHED AND TREES BLOWN
                                          DOWN. REPORTED BY SKYWARN
                                          SPOTTER.

0815 PM    FRITCH                    TX   WIND DAMAGE
07/27/02   HUTCHINSON                     POWERLINES DOWN IN
                                          FRITCH. REPORTED BY
                                          HUTCHINSON COUNTY EM.

0823 PM    18N STINNETT              TX   WIND DAMAGE
07/27/02   HUTCHINSON                     POWERLINES DOWN REPORTED
                                          BY HUTCHINSON COUNTY SO.

0830 PM    16N STINNETT              TX   FLOODING
07/27/02   HUTCHINSON                     15 INCHES OF WATER OVER
                                          THE ROADWAY AT
                                          INTERSECTION OF HIGHWAYS
                                          207 AND 281. REPORTED BY
                                          HUTCHINSON COUNTY SO.

0845 PM    BORGER                    TX   WIND DAMAGE
07/27/02   HUTCHINSON                     NUMEROUS TREES AND
                                          POWERLINES DOWN IN
                                          BORGER. MAJOR STRUCTURE
                                          DAMAGE TO BUILDINGS.
                                          REPORTED BY HUTCHINSON
                                          COUNTY EM.

0910 PM    7NE BORGER                TX   60 MPH WIND GUST
07/27/02   HUTCHINSON                     REPORTED BY HUTCHINSON
                                          COUNTY EM.

0915 PM    5E BORGER                 TX   FLOODING
07/27/02   HUTCHINSON                     WATER OVER THE ROAD ON
                                          HIGHWAY 152. REPORTED BY
                                          HUTCHINSON COUNTY EM.

0945 PM    1S CONWAY                 TX   60 MPH WIND GUST
07/27/02   CARSON                         REPORTED BY SKYWARN
                                          SPOTTER.

1000 PM    CLAUDE                    TX   WIND DAMAGE
07/27/02   ARMSTRONG                      NWS COOP OBSERVER
                                          REPORTED DAMAGE TO ROOFS
                                          OF TWO BARNS.

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 5:06 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	24 min
Jul 28, 5:30 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2002 Every severe thunderstorm warning in 2002

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.