Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 160, NWS Fort Worth, TX

July 6, 2018Henderson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jul 6, 2018, 2:46 PM CDT for Henderson County, Texas. It was in force for 59 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
Jul 6, 2018, 2:46 PM CDT (19:46 UTC)
Expired
Jul 6, 2018, 3:45 PM CDT
In force
59 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Henderson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 142 km from the middle of the area, began a volume at 19:46 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

Fort Worth, TX (KFWD), launched 12:00Z, 7.8 hours before the alert went out and 151 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2018-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1135 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2018-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1135 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1013 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
38 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 Jul 6, 12:41 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 6, 12:41 PM CDT, 2 hours 5 minutes before
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Hazardous weather outlook, Jul 6, 4:02 AM CDT, 10 hours 44 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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In the hours before

Special weather statement, Jul 6, 1:12 PM CDT, 1 hour 34 minutes before
Special Weather Statement
National Weather Service Fort Worth TX
112 PM CDT FRI JUL 6 2018

TXZ105-107-123-061845-
Hunt TX-Hopkins TX-Rains TX-
112 PM CDT FRI JUL 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HUNT...SOUTHWESTERN
HOPKINS AND RAINS COUNTIES UNTIL 145 PM CDT...

At 111 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles northeast of Emory, or 11 miles southwest of Sulphur Springs,
moving west at 15 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Emory, East Tawakoni, Point and Lone Oak.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so closely monitor for additional
information or possible warnings from the National Weather Service.

If on or near Lake Tawakoni, get out of the water and move indoors
or inside a vehicle. If you can hear thunder, you are close enough
to be struck by lightning. Do not be caught on the water in a
thunderstorm.

&&

LAT...LON 3296 9566 3288 9566 3278 9587 3282 9592
      3284 9593 3284 9595 3287 9600 3306 9597
      3309 9563 3296 9559
TIME...MOT...LOC 1811Z 074DEG 12KT 3299 9569

Godwin
Special weather statement, Jul 6, 2:10 PM CDT, 36 minutes before
Special Weather Statement
National Weather Service Fort Worth TX
210 PM CDT FRI JUL 6 2018

TXZ145-061945-
Hill TX-
210 PM CDT FRI JUL 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL HILL COUNTY UNTIL
245 PM CDT...

At 210 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hillsboro, moving southwest at 30 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Hillsboro, Whitney and Lake Whitney State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so closely monitor for additional
information or possible warnings from the National Weather Service.

If on or near Lake Whitney, get out of the water and move indoors or
inside a vehicle. If you can hear thunder, you are close enough to
be struck by lightning. Do not be caught on the water in a
thunderstorm.

&&

LAT...LON 3185 9729 3184 9733 3187 9738 3189 9738
      3189 9736 3190 9737 3193 9744 3197 9738
      3198 9738 3199 9741 3203 9743 3201 9747
      3202 9749 3213 9713 3197 9703 3184 9728
TIME...MOT...LOC 1910Z 063DEG 28KT 3202 9717

Godwin
Special weather statement, Jul 6, 2:30 PM CDT, 16 minutes before
Special Weather Statement
National Weather Service Fort Worth TX
230 PM CDT FRI JUL 6 2018

TXZ104-119-120-062000-
Collin TX-Rockwall TX-Dallas TX-
230 PM CDT FRI JUL 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ROCKWALL...SOUTHEASTERN
COLLIN AND NORTHEASTERN DALLAS COUNTIES UNTIL 300 PM CDT...

At 229 PM CDT, Doppler radar was tracking a strong thunderstorm near
Wylie, moving southwest at 20 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Dallas, Plano, Garland, Mesquite, Richardson, Rowlett, Wylie,
Rockwall, Sachse, Murphy, Royse City, Fate, Parker, Mobile City,
Lavon, St. Paul and Nevada.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so closely monitor for additional
information or possible warnings from the National Weather Service.

If on or near Lake Ray Hubbard, get out of the water and move
indoors or inside a vehicle. If you can hear thunder, you are close
enough to be struck by lightning. Do not be caught on the water in a
thunderstorm.

&&

LAT...LON 3308 9642 3296 9632 3282 9663 3301 9676
TIME...MOT...LOC 1929Z 056DEG 18KT 3300 9646

Godwin

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 1:12 PM CDTSpecial Weather StatementFWDRains33 min
Jul 6, 2:10 PM CDTSpecial Weather StatementFWDHill35 min
Jul 6, 2:30 PM CDTSpecial Weather StatementFWDRockwall30 min
Jul 6, 3:22 PM CDTSpecial Weather StatementFWDRains23 min
Jul 6, 3:56 PM CDTSpecial Weather StatementFWDNavarro34 min
Jul 6, 3:57 PM CDTSpecial Weather StatementFWDJohnson33 min
Jul 6, 4:03 PM CDTSevere Thunderstorm WarningFWDNavarro42 min
Jul 6, 4:49 PM CDTSpecial Weather StatementFWDTarrant26 min
Jul 6, 5:03 PM CDTSpecial Weather StatementFWDLimestone27 min
Jul 6, 5:14 PM CDTSevere Thunderstorm WarningFWDLeon, Limestone, Robertson25 min
Jul 6, 5:21 PM CDTSpecial Weather StatementFWDFannin, Lamar24 min
Jul 6, 5:30 PM CDTSpecial Weather StatementFWDGrayson30 min
Jul 6, 5:44 PM CDTSpecial Weather StatementFWDFannin46 min
Jul 6, 5:49 PM CDTSevere Thunderstorm WarningFWDCooke, Grayson41 min
Jul 6, 6:05 PM CDTSpecial Weather StatementFWDBell25 min
Jul 6, 6:15 PM CDTSpecial Weather StatementFWDCooke30 min
Jul 6, 6:24 PM CDTSpecial Weather StatementFWDGrayson36 min
Jul 6, 6:40 PM CDTSpecial Weather StatementFWDCooke, Montague50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018

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.