Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 41, NWS Fort Worth, TX

April 6, 2003Fannin County, Grayson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 6, 2003, 12:15 AM CST for Fannin County, Grayson County, Texas. It was in force for 60 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: Apr 6, 2003, 12:15 AM CST (06:15 UTC)
Expired: Apr 6, 2003, 1:15 AM CST
In force: 60 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

Counties Fannin County, TX, Grayson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 162 km from the middle of the area, began a volume at 06:19 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 5, 9:35 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 6.3 hours before the alert went out and 140 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: 640 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 353 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

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

306 
WUUS54 KFWD 060615
SVRFTW
TXC147-181-060715-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
1216 AM CST SUN APR 6 2003

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FANNIN COUNTY IN NORTH CENTRAL TEXAS
  NORTHEAST GRAYSON COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 115 AM CST

* AT 1216 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM OVER SHERMAN...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HENDRIX...BELLS...SAVOY AROUND 1220 AM CST
  BONHAM AROUND 1250 AM CST

THIS WARNING EXTENDS THE WARNING PREVIOUSLY ISSUED FOR GRAYSON 
COUNTY.

HAIL TO THE SIZE OF BASEBALLS AND WIND GUSTS TO 70 MPH ARE LIKELY.
SIGNIFICANT PROPERTY DAMAGE OR INJURY MAY BE CAUSED BY THE WIND
DRIVEN HAIL. FOR YOUR PROTECTION MOVE TO A STURDY SHELTER AND STAY
AWAY FROM WINDOWS UNTIL THE STORM PASSES.

A TORNADO WATCH IS IN EFFECT FOR THE WARNING AREA. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.

LAT...LON 3359 9585 3358 9671 3381 9660 3379 9642
          3369 9633 3381 9614 3382 9584

$$

07/BB

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 Apr 5, 10:06 PM CST, 2 hours 9 minutes earlier.

Area forecast discussion, Apr 5, 10:06 PM CST, 2 hours 9 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
1005 SAT APR 5 2003

PUBLIC DISCUSSION...
ZONES UPDATED FOR TORNADO WATCH.  ALSO INCREASED WINDS AND ADJUSTED
POPS SOME FOR SUNDAY.  59

.FWD...NONE.

Hazardous weather outlook, Apr 5, 3:40 PM CST, 8 hours 35 minutes before

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-061200-

HAZARDOUS WEATHER OUTLOOK...UPDATED SPOTTER ACTIVATION INFO.
NATIONAL WEATHER SERVICE FORT WORTH TX
340 PM CST SAT APR 5 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS TONIGHT FOR AREAS
NORTH OF I-20 AND WEST OF I-35. THIS INCLUDES EASTLAND...BOWIE...
SHERMAN...PARIS...GREENVILLE...AND THE DALLAS FORT WORTH METROPLEX.
THE REMAINDER OF NORTH TEXAS IS UNDER A SLIGHT RISK OF SEVERE
THUNDERSTORMS TONIGHT. DAMAGING WINDS AND LARGE HAIL WILL BE THE
PRIMARY THREATS. HOWEVER...THE CURRENT LOW-LEVEL VERTICAL WIND
PROFILES CONTINUE TO SUGGEST THE POTENTIAL FOR SUPERCELLS AND
ISOLATED TORNADOES.

.DAYS TWO THROUGH SEVEN...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTH TEXAS
SUNDAY...PRIMARILY EAST OF I-35. THE PRIMARY THREAT WILL BE LARGE
HAIL AND DAMAGING WINDS.

.SPOTTER CALL TO ACTION STATEMENT...
SPOTTER ACTIVATION WILL BE LIKELY WEST OF A NOCONA...WEATHERFORD...
CISCO LINE AFTER 5 PM.  ACTIVATION MAY BE REQUESTED WEST OF A
SHERMAN...DALLAS...KILLEEN LINE AFTER 8 PM.  SPOTTERS EAST OF I-35
SHOULD BE PREPARED FOR POSSIBLE ACTIVATION AFTER MIDNIGHT.

ROBBINS

In the hours before

Local storm report, Apr 5, 11:16 PM CST, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1116 PM CST SAT APR 05 2003

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

1113 PM    GREENVILLE                TX   2 INCH HAIL
04/05/03   HUNT                           EGG SIZED HAIL REPORT
                                          BY SPOTTER JUST SOUTH
                                          OF THE CITY OF
                                          GREENVILLE.

Local storm report, Apr 5, 11:25 PM CST, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1125 PM CST SAT APR 05 2003

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

1122 PM    GAINESVILLE               TX   2.5 INCH HAIL
04/05/03   COOKE                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

1122 PM    GAINESVILLE               TX   60 MPH TSTM GUST
04/05/03   COOKE                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Apr 5, 11:30 PM CST, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1130 PM CST SAT APR 05 2003

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

1122 PM    CADDO MILLS               TX   1.75 INCH HAIL
04/05/03   HUNT                           REPORTED BY HAM RADIO
                                          OPERATOR.

Local storm report, Apr 5, 11:48 PM CST, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1148 PM CST SAT APR 5 2003

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

0800 PM    WATAUGA                   TX   1.00 INCH HAIL
04/05/03   TARRANT                        REPORTED BY NWS TRAINED
                                          SPOTTER.

0800 PM    FORT WORTH                TX   1.75 INCH HAIL
04/05/03   TARRANT                        REPORTED BY PUBLIC, PARK
                                          GLEN SUBDIVISION.

0800 PM    FORT WORTH                TX   WIND DAMAGE
04/05/03   TARRANT                        SMALL LIMBS DOWN, DAMAGE
                                          TO SATELLITE DISH REPORTED
                                          BY PUBLIC IN PARK GLEN
                                          SUBDIVISION.

0815 PM    GRAPEVINE                 TX   2.00 INCH HAIL
04/05/03   TARRANT                        HAIL DAMAGE TO CARS
                                          REPORTED BY PUBLIC.

0815 PM    2 SW GRAPEVINE            TX   2.00 INCH HAIL
04/05/03   TARRANT                        REPORTED BY NWS TRAINED
                                          SPOTTER.

Local storm report, Apr 5, 11:51 PM CST, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1151 PM CST SAT APR 05 2003

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

1140 PM    SULPHUR SPRINGS           TX   2 INCH HAIL
04/05/03   HOPKINS                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

1141 PM    CASH                      TX   1.75 INCH HAIL
04/05/03   HUNT                           REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Apr 6, 12:03 AM CST, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1203 AM CST SUN APR 06 2003

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

1155 PM    WHITESBORO                TX   2.75 INCH HAIL
04/05/03   GRAYSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 6:29 PM CST	Tornado Warning	FWD	Palo Pinto, Parker	61 min
Apr 5, 6:34 PM CST	Severe Thunderstorm Warning	FWD	Jack, Young	56 min
Apr 5, 6:52 PM CST	Tornado Warning	FWD	Parker, Tarrant	53 min
Apr 5, 7:20 PM CST	Flash Flood Warning	FWD	Tarrant	4 hr
Apr 5, 7:25 PM CST	Severe Thunderstorm Warning	FWD	Jack	50 min
Apr 5, 7:44 PM CST	Tornado Warning	FWD	Parker, Tarrant	61 min
Apr 5, 8:09 PM CST	Tornado Warning	FWD	Dallas, Tarrant	51 min
Apr 5, 8:16 PM CST	Flash Flood Warning	FWD	Dallas	4 hr
Apr 5, 8:20 PM CST	Severe Thunderstorm Warning	FWD	Parker, Wise	55 min
Apr 5, 8:46 PM CST	Severe Thunderstorm Warning	FWD	Collin	59 min
Apr 5, 8:59 PM CST	Severe Thunderstorm Warning	FWD	Dallas, Rockwall	46 min
Apr 5, 9:06 PM CST	Severe Thunderstorm Warning	FWD	Denton, Tarrant, Wise	54 min
Apr 5, 9:25 PM CST	Severe Thunderstorm Warning	FWD	Montague	65 min
Apr 5, 9:32 PM CST	Severe Thunderstorm Warning	FWD	Hunt	58 min
Apr 5, 9:42 PM CST	Severe Thunderstorm Warning	FWD	Collin, Dallas, Rockwall	63 min
Apr 5, 9:58 PM CST	Severe Thunderstorm Warning	FWD	Denton	47 min
Apr 5, 10:27 PM CST	Severe Thunderstorm Warning	FWD	Cooke, Montague	93 min
Apr 5, 10:28 PM CST	Severe Thunderstorm Warning	FWD	Hunt	62 min
Apr 5, 10:35 PM CST	Severe Thunderstorm Warning	FWD	Hopkins	55 min
Apr 5, 10:41 PM CST	Severe Thunderstorm Warning	FWD	Collin	64 min
Apr 5, 11:25 PM CST	Severe Thunderstorm Warning	FWD	Grayson	65 min
Apr 5, 11:27 PM CST	Severe Thunderstorm Warning	FWD	Hopkins	63 min
Apr 5, 11:30 PM CST	Severe Thunderstorm Warning	FWD	Hunt	60 min
Apr 6, 12:19 AM CST	Severe Thunderstorm Warning	FWD	Hopkins	56 min
Apr 6, 1:14 AM CST	Severe Thunderstorm Warning	FWD	Fannin	46 min
Apr 6, 1:31 AM CST	Severe Thunderstorm Warning	FWD	Lamar	59 min
Apr 6, 9:13 AM CDT	Severe Thunderstorm Warning	FWD	Montague	62 min
Apr 6, 1:56 PM CDT	Severe Thunderstorm Warning	FWD	Collin	64 min
Apr 6, 1:58 PM CDT	Severe Thunderstorm Warning	FWD	Grayson	47 min
Apr 6, 3:51 PM CDT	Severe Thunderstorm Warning	FWD	Lamar	39 min
Apr 6, 4:03 PM CDT	Severe Thunderstorm Warning	FWD	Hopkins, Rains	57 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.