Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 127, NWS Norman, OK

April 19, 2003Foard County, Knox County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 19, 2003, 5:14 AM CDT for Foard County, Knox County, Texas. 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 counties it named.

The facts

Issued: Apr 19, 2003, 5:14 AM CDT (10:14 UTC)
Expired: Apr 19, 2003, 6:00 AM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Foard County, TX, Knox County, TX

The radar

The Altus AFB radar (KFDR), 96 km from the middle of the area, began a volume at 10:18 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 19, 1:20 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 10.2 hours before the alert went out and 239 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3956 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Apr 19, 4:40 AM CDT, 34 minutes earlier.

Area forecast discussion, Apr 19, 4:40 AM CDT, 34 minutes before

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Hazardous weather outlook, Apr 18, 12:00 PM CDT, 17 hours 14 minutes before

OKZ004>048-050>052-TXZ083>090-191200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CDT FRI APR 18 2003

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS PORTIONS OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE SLIGHT RISK AREA IS GENERALLY SOUTHEAST OF A LINE FROM
CHEROKEE TO CHEYENNE.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM LATE
THIS AFTERNOON THROUGH EARLY SATURDAY MORNING.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS FROM THIS
AFTERNOON UNTIL EARLY SATURDAY MORNING.

DISCUSSION...
A DRYLINE WILL CONTINUE TO SHARPEN AND PUSH EASTWARD ACROSS PORTIONS
OF WESTERN OKLAHOMA AND WESTERN NORTH TEXAS THIS AFTERNOON.
DEWPOINTS AHEAD OF THE DRYLINE WILL CONTINUE TO INCREASE AS MOISTURE
MOVES NORTHWARD FROM CENTRAL TEXAS. THE ATMOSPHERE WILL BECOME
MODERATELY UNSTABLE THIS AFTERNOON AS TEMPERATURES WARM INTO THE
80S.  CONVERGENCE ALONG THE DRYLINE AND A STRONG UPPER LEVEL JET
WILL COMBINE TO PRODUCE THUNDERSTORMS BY LATE THIS AFTERNOON.  SHEAR
PROFILES ARE EXPECTED TO BE STRONG ENOUGH FOR SUPERCELLS TO DEVELOP
WITH LARGE HAIL AND DAMAGING WIND GUSTS THE MAIN WEATHER THREAT.

ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP OVERNIGHT...AS LOW
LEVEL WINDS INCREASE.  SOME OF THESE STORMS MAY PRODUCE LARGE
HAIL.   HEAVY RAINFALL MAY ALSO OCCUR WITH THESE THUNDERSTORMS
TONIGHT...ESPECIALLY FROM WESTERN NORTH TEXAS INTO CENTRAL
OKLAHOMA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SATURDAY APR 19.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...90 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...60 PERCENT.

OTHER HAZARDOUS WEATHER...
THERE WILL BE AN EXTREME TO HIGH FIRE DANGER THIS AFTERNOON
ACROSS ALL OF OKLAHOMA AND WESTERN NORTH TEXAS.  PLEASE REFER
TO FIRE WEATHER PRODUCTS FOR DETAILED INFORMATION.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
THERE IS A MODERATE RISK OF SEVERE WEATHER ON SATURDAY ACROSS
MOST OF CENTRAL AND EASTERN OKLAHOMA.  WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS WILL HAVE A SLIGHT RISK OF SEVERE THUNDERSTORMS.

THUNDERSTORMS ARE EXPECTED TO MOVE NORTHEAST OUT OF OKLAHOMA BY
EARLY SATURDAY AFTERNOON.  THIS WILL ALLOW FOR STRONG HEATING AS
SKIES CLEAR.  LOW PRESSURE IS EXPECTED TO DEVELOP OVER SOUTHWEST
OKLAHOMA...AS A STRONG UPPER LEVEL SYSTEM APPROACHES THE SOUTHERN
PLAINS.  AN ASSOCIATED DRYLINE AND FRONTAL BOUNDARY WILL BE THE
FOCUS FOR THUNDERSTORM DEVELOPMENT BY MID TO LATE AFTERNOON.
MODERATE TO HIGH INSTABILITY AND FAVORABLE SHEAR PROFILES WILL
SUPPORT SUPERCELL THUNDERSTORMS WITH TORNADOES POSSIBLE.  HEAVY
RAINFALL WILL ALSO BE POSSIBLE...ESPECIALLY ACROSS THE NORTHERN HALF
OF OKLAHOMA.

OTHER HAZARDOUS WEATHER...
NO OTHER HAZARDOUS WEATHER IS EXPECTED.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
SATURDAY.

MAXWELL/SPEG

In the hours before

Local storm report, Apr 19, 3:28 AM CDT, 1 hour 46 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
328 AM CDT SAT APR 19 2003

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

0328 AM    10 W ELMER                OK   1.75 INCH HAIL
04/19/03   JACKSON                        REPORTED BY HAM RADIO
                                          SPOTTER.

TY

Local storm report, Apr 19, 3:34 AM CDT, 1 hour 40 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
334 AM CDT SAT APR 19 2003

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

0232 AM    MANITOU                   OK   1.00 INCH HAIL
04/19/03   TILLMAN                        REPORTED BY HAM RADIO
                                          SPOTTER.

TY

Special weather statement, Apr 19, 3:38 AM CDT, 1 hour 36 minutes before

TXZ083-084-087-190900-

SIGNIFICANT WEATHER ADVISORY
NATIONAL WEATHER SERVICE NORMAN OK
338 AM CDT SAT APR 19 2003

THIS SIGNIFICANT WEATHER ADVISORY IS FOR FOARD...HARDEMAN AND KNOX
COUNTIES.

A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM 18 MILES WEST OF
GOODLETT TO 50 MILES WEST OF BENJAMIN AT 338 AM CDT...MOVING EAST AT
20 MPH.

PEOPLE IN FOARD...HARDEMAN AND KNOX COUNTIES...INCLUDING THE CITY OF
QUANAH...SHOULD MONITOR THIS STORM CLOSELY. LISTEN FOR WARNINGS AND
WATCH FOR THREATENING WEATHER CONDITIONS AS THIS STORM APPROACHES.

24

Local storm report, Apr 19, 4:24 AM CDT, 50 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
424 AM CDT SAT APR 19 2003

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

0418 AM    ACME                      TX   1.00 INCH HAIL
04/19/03   HARDEMAN                       REPORTED BY PUBLIC

423 AM     QUANAH                    TX   0.88 INCH HAIL
04/19/03   HARDEMAN                       REPORTED BY PUBLIC

JF

Local storm report, Apr 19, 4:24 AM CDT, 50 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
424 AM CDT SAT APR 19 2003

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

0418 AM    ACME                      TX   1.00 INCH HAIL
04/19/03   HARDEMAN                       REPORTED BY PUBLIC

423 AM     QUANAH                    TX   0.88 INCH HAIL
04/19/03   HARDEMAN                  TX   REPORTED BY PUBLIC

JF

Special weather statement, Apr 19, 4:24 AM CDT, 50 minutes before

OKZ036-TXZ085-190945-

SIGNIFICANT WEATHER ADVISORY
NATIONAL WEATHER SERVICE NORMAN OK
424 AM CDT SAT APR 19 2003

THIS SIGNIFICANT WEATHER ADVISORY IS FOR JACKSON AND WILBARGER
COUNTIES.

ANOTHER LINE OF SEVERE THUNDERSTORMS WAS APPROACHING THE AREA FROM
THE WEST. IT WAS LOCATED FROM 21 MILES WEST OF ODELL TO 25 MILES
SOUTHWEST OF LOCKETT AT 424 AM CDT...MOVING EAST AT 30 MPH. SEVERAL
REPORTS OF PENNY TO QUARTER SIZE HAIL HAVE BEEN RECEIVED FROM THESE
STORMS SINCE 415 AM.

PEOPLE IN JACKSON AND WILBARGER COUNTIES...INCLUDING THE CITIES OF
ALTUS AND VERNON...SHOULD MONITOR THESE STORMS CLOSELY. LISTEN FOR
WARNINGS AND WATCH FOR THREATENING WEATHER CONDITIONS AS THE STORMS
APPROACH.

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 8:13 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	32 min
Apr 19, 12:23 AM CDT	Severe Thunderstorm Warning	OUN	Harmon	22 min
Apr 19, 12:39 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	36 min
Apr 19, 12:45 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	45 min
Apr 19, 1:19 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woods, Woodward	41 min
Apr 19, 1:34 AM CDT	Severe Thunderstorm Warning	OUN	Custer	26 min
Apr 19, 1:49 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	41 min
Apr 19, 1:59 AM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	46 min
Apr 19, 2:03 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey	42 min
Apr 19, 2:07 AM CDT	Tornado Warning	OUN	Tillman	38 min
Apr 19, 2:25 AM CDT	Severe Thunderstorm Warning	OUN	Major	35 min
Apr 19, 2:41 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa	49 min
Apr 19, 2:47 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Washita	43 min
Apr 19, 2:51 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	39 min
Apr 19, 3:01 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	44 min
Apr 19, 3:29 AM CDT	Severe Thunderstorm Warning	OUN	Canadian	46 min
Apr 19, 3:43 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	47 min
Apr 19, 3:49 AM CDT	Severe Thunderstorm Warning	OUN	Grady	41 min
Apr 19, 4:03 AM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	42 min
Apr 19, 4:11 AM CDT	Severe Thunderstorm Warning	OUN	Logan	49 min
Apr 19, 4:13 AM CDT	Severe Thunderstorm Warning	OUN	Logan	47 min
Apr 19, 4:32 AM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	43 min
Apr 19, 4:45 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	30 min
Apr 19, 4:49 AM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	41 min
Apr 19, 5:01 AM CDT	Severe Thunderstorm Warning	OUN	Garfield	44 min
Apr 19, 5:20 AM CDT	Severe Thunderstorm Warning	OUN	Noble	40 min
Apr 19, 5:39 AM CDT	Severe Thunderstorm Warning	OUN	Comanche	36 min
Apr 19, 5:41 AM CDT	Severe Thunderstorm Warning	OUN	Kay	49 min
Apr 19, 6:13 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	47 min
Apr 19, 7:18 AM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	42 min
Apr 19, 1:51 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	54 min
Apr 19, 2:45 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	45 min
Apr 19, 3:24 PM CDT	Severe Thunderstorm Warning	OUN	Grant	36 min
Apr 19, 3:31 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	44 min
Apr 19, 3:37 PM CDT	Tornado Warning	OUN	Ellis, Woodward	23 min
Apr 19, 3:56 PM CDT	Severe Thunderstorm Warning	OUN	Woods	64 min
Apr 19, 3:58 PM CDT	Severe Thunderstorm Warning	OUN	Grant	47 min
Apr 19, 4:41 PM CDT	Severe Thunderstorm Warning	OUN	Grant	49 min
Apr 19, 4:42 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	48 min
Apr 19, 5:28 PM CDT	Severe Thunderstorm Warning	OUN	Grant	47 min
Apr 19, 5:49 PM CDT	Severe Thunderstorm Warning	OUN	Kay	56 min
Apr 19, 6:43 PM CDT	Severe Thunderstorm Warning	OUN	Kay	47 min
Apr 18, 7:48 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita	42 min
Apr 19, 1:19 AM CDT	Tornado Warning	OUN	Foard, Hardeman	26 min
Apr 19, 1:45 AM CDT	Tornado Warning	OUN	Hardeman, Wilbarger	45 min
Apr 19, 2:39 AM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	51 min
Apr 19, 3:56 AM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	49 min
Apr 19, 4:48 AM CDT	Severe Thunderstorm Warning	OUN	Knox	27 min
Apr 19, 5:34 AM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	41 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning in 2003

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.