Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 182, NWS Fort Worth, TX

April 17, 2008Stephens County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 17, 2008, 5:04 PM CDT for Stephens County, Texas. It was in force for 41 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 17, 2008, 5:04 PM CDT (22:04 UTC)
Expired: Apr 17, 2008, 5:45 PM CDT
In force: 41 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Stephens County, TX

The radar

The Dyess AFB radar (KDYX), 45 km from the middle of the area, began a volume at 22:04 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 17, 2:56 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.1 hours before the alert went out and 145 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: 6 J/kg
Mixed-layer CIN: -796 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 421 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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 17, 2:31 PM CDT, 2 hours 33 minutes earlier.

Area forecast discussion, Apr 17, 2:31 PM CDT, 2 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
231 PM CDT THU APR 17 2008

.DISCUSSION...
RATHER WEAK THUNDERSTORM SET-UP (FOR APRIL) IS IN PLACE ACROSS
NORTH TEXAS AND EXPECT SHOWERS AND THUNDERSTORMS TO DEVELOP OVER
THE NORTHWESTERN COUNTIES IN THE NEXT HOUR OR SO. THE UPPER LEVEL
TROUGH IS SLOWLY DIGGING SOUTHEAST ACROSS THE NATIONS MID SECTION
WHILE THE FRONT IS CURRENTLY NEAR A LINE FROM LAWTON TO GRAHAM TO
SWEETWATER. DEW POINTS ACROSS THE AREA ARE IN THE MID TO UPPER 50S
WITH A FEW SITES IN THE LOWER 60S. PERSISTENT CLOUD COVER HAS
INHIBITED MUCH SURFACE HEATING TODAY...ALTHOUGH SOME BREAKS ARE
NOTED IN VISIBLE SATELLITE. THESE TWO FACTORS WILL RESULT IN WEAK
SBCAPE VALUES.

THE STRONG CAP EVIDENT ON THE 12Z FWD SOUNDING WILL CONTINUE TO
ERODE AS THE COLD FRONT AND UPPER LEVEL TROUGH MOVE CLOSER AND
LIFT INCREASES. UNIDIRECTIONAL SHEAR SUGGESTS THUNDERSTORMS WILL
ORGANIZE INTO A LINEAR SYSTEM AS THE FRONT MOVES EAST. EXPECT THE
LINE OF CONVECTION TO REACH THE METROPLEX IN THE 5 PM TO 7 PM TIME
FRAME. THE MAIN THREAT WILL BE LARGE HAIL...ALTHOUGH DAMAGING
WINDS WILL BE POSSIBLE WITH SUFFICIENT DRY AIR AVAILABLE IN THE
MID LEVELS. THE STORMS ARE EXPECTED TO BECOME ELEVATED THIS
EVENING ONCE THE FRONT CATCHES UP TO THEM. MOST OF NORTH TEXAS HAS
A VERY GOOD CHANCE FOR RAIN THIS AFTERNOON AND EVENING AS THIS
SYSTEM SWEEPS THROUGH. BY TOMORROW MORNING...PRECIP SHOULD ONLY BE
AFFECTING THE EASTERN COUNTIES AS THE SYSTEM MOVES OUT OF THE
AREA.

THIS WEEKEND LOOKS NICE WITH TEMPERATURES REACHING THE LOWER 80S
BOTH SATURDAY AND SUNDAY. BY THE BEGINNING OF THE WORK WEEK A
LARGE BOWLING BALL LOW WILL ROTATE INTO THE NORTHERN PLAINS AND
ATTEMPT TO PUSH A COLD FRONT SOUTH AS IT DOES SO. MODELS STALL THE
FRONT OUT OVER THE CENTRAL UNITED STATES AS THIS SYSTEM PIVOTS
INTO CANADA. LOW RAIN CHANCES REMAIN IN THE FORECAST NEXT WEEK AS
THIS FRONT WAVERS IN THE VICINITY OF THE RED RIVER.  SH/13

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  50  68  50  81  59 /  80  10   0   0   0
WACO, TX              52  72  49  81  60 /  70  10   0   0   0
PARIS, TX             51  64  47  78  56 /  80  20   0   0   0
DENTON, TX            49  68  47  81  60 /  70   5   0   0   0
MCKINNEY, TX          52  69  47  79  57 /  80  10   0   0   0
DALLAS, TX            50  71  52  81  61 /  80  10   0   0   0
TERRELL, TX           55  67  49  79  57 /  80  20   0   0   0
CORSICANA, TX         55  68  49  79  58 /  80  20   0   0   0
TEMPLE, TX            55  71  48  80  57 /  80  10   0   0   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 6 PM CDT THIS AFTERNOON FOR THE FOLLOWING
ZONES:
TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175.

&&

Hazardous weather outlook, Apr 17, 5:00 PM CDT, 4 minutes before

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In the hours before

Special weather statement, Apr 17, 4:08 PM CDT, 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
408 PM CDT THU APR 17 2008

TXZ100-172145-
YOUNG TX-
408 PM CDT THU APR 17 2008

...SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHWESTERN YOUNG COUNTY

AT 408 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 9 MILES SOUTHEAST OF THROCKMORTON...MOVING
NORTHEAST AT 38 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE OLNEY.

DIME-SIZED HAIL AND WIND GUSTS TO 40 MPH CAN BE EXPECTED FROM THIS
STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
THURSDAY EVENING FOR NORTH CENTRAL TEXAS.

LAT...LON 3342 9884 3342 9879 3340 9878 3341 9866
      3333 9857 3306 9895 3307 9896 3331 9896
TIME...MOT...LOC 2108Z 226DEG 33KT 3314 9900

77/TLD

Special weather statement, Apr 17, 4:44 PM CDT, 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
444 PM CDT THU APR 17 2008

TXZ115-172215-
STEPHENS TX-
444 PM CDT THU APR 17 2008

...SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHWESTERN STEPHENS COUNTY

AT 444 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 6 MILES EAST OF ALBANY...MOVING NORTHEAST AT 41
MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE BRECKENRIDGE.

PEA-SIZED HAIL AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS
STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
THURSDAY EVENING FOR NORTH CENTRAL TEXAS.

LAT...LON 3296 9895 3295 9892 3295 9886 3281 9875
      3264 9909 3265 9911 3286 9911
TIME...MOT...LOC 2144Z 247DEG 36KT 3271 9917

77/TLD

Local storm report, Apr 17, 4:48 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
448 PM CDT THU APR 17 2008

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

0444 PM     HAIL             2 E NEWCASTLE           33.19N  98.71W
04/17/2008  E0.88 INCH       YOUNG              TX   AMATEUR RADIO

Local storm report, Apr 17, 5:01 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
501 PM CDT THU APR 17 2008

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

0457 PM     HAIL             LOVING                  33.27N  98.51W
04/17/2008  E1.75 INCH       YOUNG              TX   AMATEUR RADIO

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 2:21 AM CDT	Wind Advisory	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	16 hr
Apr 17, 4:08 PM CDT	Special Weather Statement	FWD	Young	37 min
Apr 17, 4:33 PM CDT	Severe Thunderstorm Warning	FWD	Young	42 min
Apr 17, 4:44 PM CDT	Special Weather Statement	FWD	Stephens	31 min
Apr 17, 4:51 PM CDT	Severe Thunderstorm Warning	FWD	Jack	54 min
Apr 17, 5:21 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Stephens	54 min
Apr 17, 5:25 PM CDT	Special Weather Statement	FWD	Montague	35 min
Apr 17, 5:31 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto	59 min
Apr 17, 5:43 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Wise	62 min
Apr 17, 6:01 PM CDT	Special Weather Statement	FWD	Parker	29 min
Apr 17, 6:16 PM CDT	Severe Thunderstorm Warning	FWD	Parker	59 min
Apr 17, 6:22 PM CDT	Tornado Warning	FWD	Palo Pinto, Parker	38 min
Apr 17, 6:43 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Denton, Montague, Wise	62 min
Apr 17, 6:50 PM CDT	Special Weather Statement	FWD	Tarrant	25 min
Apr 17, 6:57 PM CDT	Tornado Warning	FWD	Parker	48 min

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.