Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 308, NWS Fort Worth, TX

September 15, 2005Van Zandt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 15, 2005, 5:55 PM CDT for Van Zandt County, Texas. It was in force for 45 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: Sep 15, 2005, 5:55 PM CDT (22:55 UTC)
Expired: Sep 15, 2005, 6:40 PM CDT
In force: 45 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

County Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 137 km from the middle of the area, began a volume at 22:56 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 nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 10.9 hours before the alert went out and 196 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: 715 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 907 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: -25 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

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 Sep 15, 2:28 PM CDT, 3 hours 27 minutes earlier.

Area forecast discussion, Sep 15, 2:28 PM CDT, 3 hours 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
228 PM CDT THU SEP 15 2005

.DISCUSSION...
OUTFLOW BOUNDARY IS MOVING ACROSS DFW METROPLEX RIGHT NOW. SHORT
LINE OF THUNDERSTORMS FROM POSSUM KINGDOM LAKE TO DENTON IS MOVING
EAST AND BUILDING SLOWLY SOUTHEAST. WOULD EXPECT FURTHER
INITIATION ON THE BOUNDARY THIS AFTERNOON. COVERAGE WILL LIKELY BE
SCATTERED THIS AFTERNOON/EVENING WITH SOME SHORT BROKEN LINES.
CONVECTION WILL CONTINUE INTO THE OVERNIGHT HOURS IN THE SOUTH AND
LEAVE THE CWA FRIDAY MORNING.

ALTHOUGH WE WILL HAVE A NORTH WIND ACROSS THE AREA...THE MUCH COOLER
AIR WILL REMAIN WELL TO THE NORTH IN OKLAHOMA. I SEE US JUST COOL
ENOUGH TO HAVE A VERY ENJOYABLE DAY SATURDAY. THERE WILL BE SOME
DRYING...SO MORNING TEMPERATURES WILL BE REFRESHING AND
FRIDAY/SATURDAY AFTERNOON TEMPERATURES WILL BE QUITE
PLEASANT...UPPER 80S TO LOW 90S.

SUBTROPICAL RIDGE BUILDS BACK OVER US BY SUNDAY AND REMAINS IN
PLACE FOR REST OF THE PERIOD...SO LOOK FOR HIGHS IN THE UPPER 90S
AND LOWS IN THE 70S. THIS IS 5 TO 8 DEGREES ABOVE
CLIMATOLOGY...SO THOSE WHO GET RAIN OUT OF THIS SYSTEM NEED TO
ENJOY IT. OVERALL...LOOKS LIKE THE DRY PATTERN MAY PERSIST FOR THE
NEXT COUPLE OF WEEKS. 84

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  70  89  68  93 /  40  10   0   0
WACO, TX              73  92  71  94 /  50  20  10   0
PARIS, TX             66  84  63  89 /  50  10   0   0
DENTON, TX            67  87  65  92 /  40  10   0   0
MCKINNEY, TX          67  87  66  93 /  40  10   0   0
DALLAS, TX            69  89  68  94 /  40  10   0   0
TERRELL, TX           70  86  68  94 /  50  20  10   0
CORSICANA, TX         73  89  70  94 /  50  20  10   0
TEMPLE, TX            73  92  71  96 /  40  30  10   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

/84

Hazardous weather outlook, Sep 15, 3:10 PM CDT, 2 hours 45 minutes before

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In the hours before

Local storm report, Sep 15, 3:26 PM CDT, 2 hours 29 minutes before

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Local storm report, Sep 15, 3:44 PM CDT, 2 hours 11 minutes before

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Special weather statement, Sep 15, 4:07 PM CDT, 1 hour 48 minutes before

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Local storm report, Sep 15, 5:05 PM CDT, 50 minutes before

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Local storm report, Sep 15, 5:24 PM CDT, 31 minutes before

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Special weather statement, Sep 15, 5:34 PM CDT, 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 15, 2:18 PM CDT	Severe Thunderstorm Warning	FWD	Wise	42 min
Sep 15, 2:24 PM CDT	Severe Thunderstorm Warning	FWD	Jack	51 min
Sep 15, 2:33 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	57 min
Sep 15, 2:47 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Tarrant	58 min
Sep 15, 3:25 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	65 min
Sep 15, 4:26 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	38 min
Sep 15, 4:28 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto	45 min
Sep 15, 4:46 PM CDT	Severe Thunderstorm Warning	FWD	Kaufman	59 min
Sep 15, 4:59 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Parker	61 min
Sep 15, 5:43 PM CDT	Severe Thunderstorm Warning	FWD	Somervell	32 min
Sep 15, 6:03 PM CDT	Severe Thunderstorm Warning	FWD	Johnson	19 min

Nearby

Severe Thunderstorm Warnings in Texas, 2005 Every severe thunderstorm warning in 2005

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.