Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 415, NWS Fort Worth, TX

November 23, 2004Coryell County, McLennan County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Nov 23, 2004, 5:51 PM CST for Coryell County, McLennan County, Texas. It was in force for 39 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: Nov 23, 2004, 5:51 PM CST (23:51 UTC)
Expired: Nov 23, 2004, 6:30 PM CST
In force: 39 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

Counties Coryell County, TX, McLennan County, TX

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
Nov 23, 3:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Nov 23, 5:30 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.9 hours before the alert went out and 155 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: 130 J/kg
Mixed-layer CIN: -241 J/kg
Mixed-layer LCL: 496 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KFWD 232351
SVRFWD
TXC099-309-240030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
551 PM CST TUE NOV 23 2004

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CORYELL COUNTY IN NORTH CENTRAL TEXAS
  MCLENNAN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 630 PM CST

* AT 551 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM 14 MILES SOUTHWEST OF MCGREGOR...MOVING
  NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MCGREGOR AROUND 620 PM CST
  VALLEY MILLS AROUND 630 PM CST

OTHER LOCATIONS IN THE WARNING INCLUDE WEST

HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 60 MPH ARE LIKELY. FOR
YOUR PROTECTION MOVE TO A STURDY SHELTER UNTIL THE STORM PASSES.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A STRONG BUILDING AND
STAY INSIDE...AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3122 9768 3134 9745 3183 9706 3163 9755

$$

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 Nov 23, 4:50 PM CST, 1 hour 1 minute earlier.

Area forecast discussion, Nov 23, 4:50 PM CST, 1 hour 1 minute before

AREA FORECAST DISCUSSION...UPDATED FOR AVIATION
NATIONAL WEATHER SERVICE FORT WORTH TX
450 PM CST TUE NOV 23 2004

.AVIATION DISCUSSION...
AREA OF STORMS WEST AND SOUTHWEST OF DFW AREA WILL MOVE NORTHEAST
INTO THE AREA 00-01Z.  SOME OF THESE STORMS ARE SEVERE...BUT CURRENT
THINKING IS THE STORMS WILL DECREASE SOME AFTER SUNSET.  HOWEVER...I
STILL THINK THE STRONGEER STORMS WILL BE CAPABLE OF 40KT GUSTS IN
THE DFW AREA.  59

&&

.DISCUSSION...
TODAYS INITIAL ROUND OF CONVECTION...ASSOCIATED WITH LEADING UPPER
SPEED MAX AND INCREASINGLY DIFLUENT FLOW ALOFT...HAS NOW SHIFTED
INTO EAST TEXAS...WITH ONLY ISOLATED ACTIVITY REMAINING IN THE
EASTERN ZONES. HOWEVER...QG FORCING ASSOCIATED WITH UPPER LOW
APPROACHING KLBB HAS AIDED IN DEVELOPMENT OF ANOTHER ROUND OF
SHOWERS/THUNDERSTORMS...FROM KABI SWD TO KSJT/KDRT. THIS AREA OF
CONVECTION SHOULD EXPAND EASTWARD...AS IT COMES UNDER THE INFLUENCE
OF INCREASING DIVERGENCE ALOFT BENEATH LEFT EXIT REGION OF YET
ANOTHER 100-120KT UPPER SPEED MAX. GIVEN COLD TEMPERATURES ALOFT
ASSOCIATED WITH THIS SYSTEM...MARGINALLY SEVERE HAIL WILL BE
POSSIBLE WITH THE STRONGEST CELLS...AND SEVERE THUNDERSTORM WATCH
886 HAS BEEN POSTED FOR SWRN PORTION OF THE FORECAST AREA THROUGH
24/02Z.

THE UPPER LOW IS PROGGED TO ACCELERATE EASTWARD AND DEEPEN
OVERNIGHT...AS UPPER SPEED MAX WORKS ITS WAY TO EASTERN FLANK OF THE
SYSTEM. RESULTANT SURFACE CYCLOGENESIS WILL ALLOW STRONGER WESTERLY
BOUNDARY LAYER FLOW TO SPREAD ACROSS THE AREA THIS EVENING...BEFORE
STRONG COLD ADVECTION BEGINS ON WEDNESDAY MORNING. SOME LINGERING
-RA IS POSSIBLE ACROSS THE RED RIVER VALLEY ON WEDNESDAY MORNING.
OTHERWISE...EXPECT A COOLER DAY ALONG WITH BRISK NORTHWEST WINDS. AS
SURFACE RIDGE AXIS SETTLES ACROSS NORTH TEXAS ON THURSDAY MORNING...
MINIMUM TEMPERATURES WILL LIKELY FALL BELOW FREEZING IN MANY
AREAS...ESPECIALLY NORTHEAST/NORTH AND WEST OF THE DFW METROPLEX.
PLEASANT WEATHER WILL PERSIST FOR THE REMINDER OF THURSDAY AND
FRIDAY...AS MID/UPPER FLOW REGIME REMAINS LARGELY ZONAL ACROSS NORTH
TEXAS.

A WEAK VORT MAX WILL LIKELY SPREAD CLOUDS ACROSS THE AREA BEGINNING
ON FRIDAY NIGHT...BUT QUESTIONABLE DEGREE OF MOISTURE RETURN AND
NORTHERN TRACK OF SYSTEM PRECLUDE MENTIONING POPS ATTM. THE LATEST
ECMWF/GFS ARE IN GENERAL AGREEMENT ON A STRONGER UPPER SYSTEM
APPROACHING THE AREA ON MONDAY/TUESDAY...AND HAVE MAINTAINED THE
INHERITED CHANCE POPS FOR THIS PERIOD...AS ANOTHER STRONG FRONT
LOOKS TO PUSH ACROSS THE AREA ON MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  45  52  34  61 /  60   0   0   0
WACO, TX              47  57  31  62 /  60   0   0   0
PARIS, TX             46  49  31  57 /  60  20   0   0
DENTON, TX            44  52  32  61 /  60  20   0   0
MCKINNEY, TX          45  52  32  60 /  60  20   0   0
DALLAS, TX            45  52  34  60 /  60   0   0   0
TERRELL, TX           46  52  32  59 /  60   0   0   0
CORSICANA, TX         47  55  34  60 /  60   0   0   0
TEMPLE, TX            48  59  32  62 /  60   0   0   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
TX...TORNADO WATCH UNTIL 900 PM CST TUESDAY FOR EXTREME SOUTHEAST
ZONES.
TX...SEVERE THUNDERSTORM WATCH UNTIL 800 PM CST FOR SOUTHWESTERN
QUADRANT OF CWA.

&&

65/DD

Hazardous weather outlook, Nov 23, 3:45 PM CST, 2 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
345 PM CST TUE NOV 23 2004

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-241200-
ANDERSON-BELL-BOSQUE-COLLIN-COMANCHE-COOKE-CORYELL-DALLAS-DELTA-
DENTON-EASTLAND-ELLIS-ERATH-FALLS-FANNIN-FREESTONE-GRAYSON-HAMILTON-
HENDERSON-HILL-HOOD-HOPKINS-HUNT-JACK-JOHNSON-KAUFMAN-LAMAR-LAMPASAS-
LEON-LIMESTONE-MCLENNAN-MILAM-MILLS-MONTAGUE-NAVARRO-PALO PINTO-
PARKER-RAINS-ROBERTSON-ROCKWALL-SOMERVELL-STEPHENS-TARRANT-VAN ZANDT-
WISE-YOUNG-
345 PM CST TUE NOV 23 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS ALL OF NORTH
TEXAS TONIGHT.

AN UPPER LEVEL LOW PRESSURE SYSTEM AND ASSOCIATED COLD FRONT WILL
MOVE ACROSS NORTH TEXAS TONIGHT AND BRING A CHANCE OF THUNDERSTORMS.
THE MAIN SEVERE WEATHER THREAT WILL BE LARGE HAIL AND DAMAGING
DOWNBURST WINDS. THE STORMS WILL END FROM WEST TO EAST OVERNIGHT AS
DRIER AND COOLER AIR FILTERS IN FROM THE WEST BEHIND A COLD FRONT.

.DAYS TWO THROUGH SEVEN...
A FEW THUNDERSTORMS WILL BE POSSIBLE ACROSS THE RED RIVER COUNTIES
OF NORTH TEXAS WEDNESDAY MORNING. THUNDERSTORM CHANCES WILL END BY
MIDDAY.

THE FIRST FREEZE OF THE SEASON IS POSSIBLE FOR ALL BUT THE SOUTHEAST
SECTIONS OF NORTH TEXAS THANKSGIVING MORNING.

THERE IS ALSO A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH TEXAS
SUNDAY AFTERNOON THROUGH TUESDAY AS ANOTHER UPPER LEVEL DISTURBANCE
MOVES ACROSS THE REGION.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION IS POSSIBLE ACROSS ALL OF NORTH TEXAS
THIS EVENING.

79

In the hours before

Local storm report, Nov 23, 5:10 PM CST, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
510 PM CST TUE NOV 23 2004

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST   ...SOURCE....
            ..REMARKS..

0459 PM     HAIL            1 S SALADO               30.94N  97.52W
11/23/2004  0.88 INCH       BELL                TX   TRAINED SPOTTER

            RECEIVED REPORT OF NICKLE SIZE HAIL FROM STORM SPOTTER

Local storm report, Nov 23, 5:17 PM CST, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
517 PM CST TUE NOV 23 2004

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST   ...SOURCE....
            ..REMARKS..

0513 PM     HAIL            5 SE DE LEON             32.06N  98.48W
11/23/2004  1.00 INCH       COMANCHE            TX   LAW ENFORCEMENT

            BETWEEN GORMAN AND DE LEON

Local storm report, Nov 23, 5:28 PM CST, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
528 PM CST TUE NOV 23 2004

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST   ...SOURCE....
            ..REMARKS..

0520 PM     HAIL            SALADO                   30.95N  97.52W
11/23/2004  0.88 INCH       BELL                TX   EMERGENCY MNGR

Local storm report, Nov 23, 5:32 PM CST, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
532 PM CST TUE NOV 23 2004

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST   ...SOURCE....
            ..REMARKS..

0508 PM     TSTM WND GST    1 W DE LEON              32.11N  98.55W
11/23/2004  60 MPH          COMANCHE            TX   LAW ENFORCEMENT

            COMANCHE COUNTY SO REPORTED A 60 MPH GUST WITH
            THUNDERSTORM IN THE COUNTY

Special weather statement, Nov 23, 5:39 PM CST, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
539 PM CST TUE NOV 23 2004

TXZ115-240015-

STEPHENS-
539 PM CST TUE NOV 23 2004

...SIGNIFICANT WEATHER UPDATE...

AT 539 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A
STRONG THUNDERSTORM 5 MILES NORTHEAST OF HARPERSVILLE...OR 9 MILES
SOUTH OF BRECKENRIDGE...MOVING EAST AT 35 MPH.

WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS STORM.

Local storm report, Nov 23, 5:51 PM CST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
551 PM CST TUE NOV 23 2004

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST   ...SOURCE....
            ..REMARKS..

0540 PM     TSTM WND DMG    1 W RISING STAR          32.10N  98.98W
11/23/2004                  EASTLAND            TX   LAW ENFORCEMENT

            RECEIVED REPORT OF ROOF DAMAGE AND DOWNED TREES AROUND
            RISING STAR

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 23, 6:25 AM CST	Severe Thunderstorm Warning	FWD	Falls	50 min
Nov 23, 7:50 AM CST	Severe Thunderstorm Warning	FWD	Limestone, Navarro	55 min
Nov 23, 7:51 AM CST	Severe Thunderstorm Warning	FWD	Montague	54 min
Nov 23, 7:56 AM CST	Severe Thunderstorm Warning	FWD	Freestone	49 min
Nov 23, 8:26 AM CST	Severe Thunderstorm Warning	FWD	Bell, Coryell	49 min
Nov 23, 8:46 AM CST	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Henderson, Navarro	44 min
Nov 23, 8:56 AM CST	Severe Thunderstorm Warning	FWD	Grayson	49 min
Nov 23, 9:16 AM CST	Severe Thunderstorm Warning	FWD	Coryell, McLennan	44 min
Nov 23, 9:33 AM CST	Severe Thunderstorm Warning	FWD	Bosque, Hill	42 min
Nov 23, 9:53 AM CST	Severe Thunderstorm Warning	FWD	Van Zandt	52 min
Nov 23, 10:00 AM CST	Severe Thunderstorm Warning	FWD	Limestone, McLennan	30 min
Nov 23, 10:22 AM CST	Severe Thunderstorm Warning	FWD	Milam	53 min
Nov 23, 10:37 AM CST	Severe Thunderstorm Warning	FWD	Lamar	23 min
Nov 23, 10:49 AM CST	Severe Thunderstorm Warning	FWD	Fannin, Navarro	41 min
Nov 23, 11:04 AM CST	Flash Flood Warning	FWD	Bosque, Coryell, McLennan	3 hr
Nov 23, 11:13 AM CST	Severe Thunderstorm Warning	FWD	Milam	47 min
Nov 23, 11:25 AM CST	Severe Thunderstorm Warning	FWD	Henderson, Navarro	50 min
Nov 23, 11:46 AM CST	Severe Thunderstorm Warning	FWD	Robertson	59 min
Nov 23, 11:47 AM CST	Severe Thunderstorm Warning	FWD	Lamar	28 min
Nov 23, 11:53 AM CST	Tornado Warning	FWD	Milam, Robertson	52 min
Nov 23, 12:11 PM CST	Severe Thunderstorm Warning	FWD	Ellis	64 min
Nov 23, 12:13 PM CST	Severe Thunderstorm Warning	FWD	Delta	47 min
Nov 23, 12:40 PM CST	Severe Thunderstorm Warning	FWD	Leon, Robertson	65 min
Nov 23, 12:42 PM CST	Severe Thunderstorm Warning	FWD	Leon, Robertson	63 min
Nov 23, 12:51 PM CST	Severe Thunderstorm Warning	FWD	Dallas, Tarrant	39 min
Nov 23, 1:10 PM CST	Severe Thunderstorm Warning	FWD	Collin, Denton	65 min
Nov 23, 4:42 PM CST	Severe Thunderstorm Warning	FWD	Comanche	63 min
Nov 23, 4:56 PM CST	Severe Thunderstorm Warning	FWD	Eastland	64 min
Nov 23, 4:58 PM CST	Severe Thunderstorm Warning	FWD	Bell	47 min
Nov 23, 5:18 PM CST	Severe Thunderstorm Warning	FWD	Erath	57 min
Nov 23, 5:33 PM CST	Severe Thunderstorm Warning	FWD	Hamilton	42 min
Nov 23, 5:54 PM CST	Severe Thunderstorm Warning	FWD	Bosque	51 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every severe thunderstorm warning in 2004

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.