Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 381, NWS Fort Worth, TX

August 22, 2003Collin County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 22, 2003, 5:20 PM CDT for Collin County, Texas. It was in force for 55 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: Aug 22, 2003, 5:20 PM CDT (22:20 UTC)
Expired: Aug 22, 2003, 6:15 PM CDT
In force: 55 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

County Collin County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 78 km from the middle of the area, began a volume at 22:22 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.

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

Fort Worth, TX (KFWD), launched 12:00Z, 10.3 hours before the alert went out and 59 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: 1392 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 1368 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 61 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 KFWD 222220
SVRFTW
TXC085-222315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
519 PM CDT FRI AUG 22 2003

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COLLIN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 615 PM CDT

* AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A  
  SEVERE THUNDERSTORM OVER PLANO THE STORM MOVING WEST AT 10 MPH.

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 70 MPH ARE LIKELY. FOR
YOUR PROTECTION MOVE TO A STURDY SHELTER UNTIL THE STORM PASSES.

LAT...LON 3302 9683 3303 9664 3322 9662 3321 9681

$$

ROBBINS

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 22, 2:39 PM CDT, 2 hours 41 minutes earlier.

Area forecast discussion, Aug 22, 2:39 PM CDT, 2 hours 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
239 PM CDT FRI AUG 22 2003

TROPICAL MOISTURE AND HEATING RESULTED IN SCATTERED CONVECTION OVER
THE AREA...MORE WIDESPREAD IN THE SOUTHWEST THIS AFTERNOON. WITH THE
LOSS OF DAYTIME HEATING...PRECIP SHOULD DECREASE THIS EVENING AS
EASTERLY WAVE CONTINUES TO MOVE WESTWARD. ALTHOUGH BULK OF
INSTABILITY WILL MOVE WEST OF CWA...MOIST AIRMASS TO REMAIN IN
PLACE...GIVING US A SOME CHANCE OF CONVECTION EACH AFTERNOON AND
EVENING FOR SEVERAL MORE DAYS...ALTHOUGH NOT AS WIDESPREAD AS
TODAY.  TEMPERATURES WILL ONLY MODERATE SLIGHTLY...BUT STILL JUST
ABOVE NORMAL.

THE NEXT BEST CHANCE FOR RAIN COMES MID WEEK AS A COLD FRONT MOVES
INTO THE REGION.  THIS IS ENHANCED BY THE PROSPECT OF LARGE SCALE
CHANGES AS THE RIDGE OVER THE WESTERN U.S. BREAKS DOWN AND THE
WESTERLIES PUSH SOUTH. WHILE THIS DOES NOT SIGNIFY THE END OF
SUMMER...IT DOES SHOW THAT WE ARE BEGINNING TO ENTER A TIME OF
CHANGE IN THE SEASONS...AND HOPEFULLY A RETURN TO WETTER CONDITIONS.

GENERALLY SPEAKING...THE FORECAST SHOWS PERSISTENCE FOR THE NEXT
SEVERAL DAYS WITH A CHANGE TO COOLER TEMPS AND SLIGHTLY HIGHER POPS
THE LATTER PART OF THE WEEK.

OVERALL...MOS NUMBERS WERE CLOSE AND ONLY MINOR CHANGES WERE MADE IN
BOTH POPS AND TEMPS.

FCSTID =   42
DFW   75  98  75  97 /  20  20  20  20
ACT   73  96  73  96 /  60  30  30  30
PRX   73  96  74  97 /  20  20  20  20
DTO   75  98  75  98 /  20  20  20  20
TKI   75  98  76  97 /  20  20  20  20
DAL   76  98  76  97 /  20  20  20  20
TRL   75  97  75  96 /  20  20  20  20
CRS   74  96  74  96 /  40  30  30  30
TPL   73  96  73  95 /  60  30  30  30

.FWD...
TX...NONE.

Hazardous weather outlook, Aug 22, 3:00 PM CDT, 2 hours 20 minutes before

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-230930-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
300 PM CDT FRI AUG 22 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
ISOLATED SEVERE STORMS ARE POSSIBLE THIS EVENING. THE MAIN SEVERE
WEATHER THREAT WILL BE WINDS IN EXCESS OF 60 MPH AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...
THERE IS A CHANCE FOR THUNDERSTORMS...MAINLY AFTERNOON AND
EVENING... SATURDAY THROUGH THURSDAY. ISOLATED SEVERE THUNDERSTORMS
ARE POSSIBLE THROUGH THE PERIOD.

.SPOTTER CALL TO ACTION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE REQUIRED THROUGH 700 PM THIS
EVENING.

75

In the hours before

Local storm report, Aug 22, 2:23 PM CDT, 2 hours 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
223 PM CDT FRI AUG 22 2003

..DELAYED REPORT FROM STORMS THURSDAY...

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

0945 PM    GAINESVILLE               TX   61 MPH TSTM GUST
08/21/03   COOKE                          DOWNBURST FROM SHORTLIVED
                                          STORM

ROBBINS

Local storm report, Aug 22, 3:49 PM CDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
349 PM CDT FRI AUG 22 2003

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

0320 PM    GOLDTHWAITE               TX   WND DAMAGE.. LIMBS DOWN
08/22/03   MILLS                          IN GOLDTHWAITE REPORTED BY
                                          LAW ENFORCEMENT

Local storm report, Aug 22, 4:23 PM CDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
349 PM CDT FRI AUG 22 2003

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

0320 PM    GOLDTHWAITE               TX   WND DAMAGE.. LIMBS DOWN
08/22/03   MILLS                          IN GOLDTHWAITE REPORTED BY
                                          LAW ENFORCEMENT

Local storm report, Aug 22, 4:33 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
433 PM CDT FRI AUG 22 2003

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

0422 PM    BRUCEVILLE-EDDY           TX   WIND DAMAGE
08/22/03   MCLENNAN                       TRAVEL TRAILOR BEING TOWED
                                          ON I-35 BLOWN OVER BY HIGH
                                          WINDS. REPORTED BY
                                          EMERGENCY MANAGEMENT

Local storm report, Aug 22, 4:45 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT... CORRECTED...
NATIONAL WEATHER SERVICE FORT WORTH TX
349 PM CDT FRI AUG 22 2003

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

0320 PM    GOLDTHWAITE               TX   WIND DAMAGE.. LIMBS DOWN
08/22/03   MILLS                          IN GOLDTHWAITE REPORTED BY
                                          LAW ENFORCEMENT

Local storm report, Aug 22, 4:47 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
447 PM CDT FRI AUG 22 2003

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

0422 PM    BRUCEVILLE-EDDY           TX   WIND DAMAGE
08/22/03   MCLENNAN                       REPORTED BY LAW ENFORCEMENT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 9:09 PM CDT	Severe Thunderstorm Warning	FWD	Lamar	21 min
Aug 21, 9:31 PM CDT	Severe Thunderstorm Warning	FWD	Lamar	29 min
Aug 21, 9:45 PM CDT	Severe Thunderstorm Warning	FWD	Fannin	60 min
Aug 22, 1:39 PM CDT	Severe Thunderstorm Warning	FWD	Hamilton	51 min
Aug 22, 2:28 PM CDT	Severe Thunderstorm Warning	FWD	Mills	47 min
Aug 22, 2:33 PM CDT	Severe Thunderstorm Warning	FWD	Coryell	42 min
Aug 22, 3:04 PM CDT	Severe Thunderstorm Warning	FWD	Hamilton	56 min
Aug 22, 3:30 PM CDT	Severe Thunderstorm Warning	FWD	Erath	45 min
Aug 22, 3:53 PM CDT	Severe Thunderstorm Warning	FWD	Falls, McLennan	37 min
Aug 22, 3:56 PM CDT	Severe Thunderstorm Warning	FWD	Falls, McLennan	34 min
Aug 22, 4:03 PM CDT	Severe Thunderstorm Warning	FWD	Eastland	42 min
Aug 22, 4:39 PM CDT	Severe Thunderstorm Warning	FWD	Hill	21 min
Aug 22, 4:51 PM CDT	Severe Thunderstorm Warning	FWD	Bell	39 min
Aug 22, 6:04 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	41 min
Aug 22, 6:33 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	42 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.