Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 305, NWS Fort Worth, TX

August 6, 2017Jack County, Wise County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 6, 2017, 3:43 PM CDT for Jack County, Wise County, Texas. It was in force for 62 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: Aug 6, 2017, 3:43 PM CDT (20:43 UTC)
Expired: Aug 6, 2017, 4:45 PM CDT
In force: 62 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 65.0 mph

Counties Jack County, TX, Wise County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 92 km from the middle of the area, began a volume at 20:46 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, 8.7 hours before the alert went out and 73 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: 1278 J/kg
Mixed-layer CIN: -176 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

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 Aug 6, 1:30 PM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Aug 6, 1:30 PM CDT, 2 hours 13 minutes before

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Hazardous weather outlook, Aug 6, 3:23 PM CDT, 20 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Fort Worth TX
323 PM CDT Sun Aug 6 2017

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-071145-
Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin-
Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas-
Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell-
Johnson-Ellis-Henderson-Comanche-Mills-Hamilton-Bosque-Hill-Navarro-
Freestone-Anderson-Lampasas-Coryell-Bell-McLennan-Falls-Limestone-
Leon-Milam-Robertson-
323 PM CDT Sun Aug 6 2017

This Hazardous Weather Outlook is for North and Central Texas.

.DAY ONE...Through Tonight.
A few strong to severe storms will be possible late this afternoon
and continuing through the evenings hours, particularly along and
north of Interstate 20. The primary hazard will be damaging
downburst winds. Near severe hail will also be possible with more
intense storm clusters. Heavy rainfall will likely lead to flash
flooding of low-lying areas, creeks and streams.

Numerous storms will likely continue tonight. Some storms may be
strong to severe with the main threat being strong downburst winds
and near severe hail. Heavy rain and resultant flash flooding will
also be possible, especially across North and East TX through the
overnight hours. The severe weather threat will wane with time, but
gusty to strong thunderstorm outflow winds will remain possible after
midnight. The heavy rain and flash flood risk will persist through
the overnight hours into Monday morning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Numerous thunderstorms are expected to continue through Monday and
Tuesday, especially across East and Central TX. The main hazard
during this time will be flash flooding, although a few strong to
severe storms capable of hail and downburst winds will also be
possible.

Lower thunderstorm chances will continue on Wednesday when localized
flooding will remain possible in areas that received abundant
rainfall earlier in the week. Lower chances for thunderstorms will
continue Thursday through Saturday, mainly across North and East
Texas.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is likely this afternoon and into the early
evening hours, particularly for areas near and north of the I-20
corridor. Limited spotter activation may be requested late tonight
and into the overnight hours for the remainder of North and Central
TX. Timely reports of flash flooding are appreciated during the
overnight period as well.

24-Bain

In the hours before

Special weather statement, Aug 6, 10:16 AM CDT, 5 hours 27 minutes before

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Special weather statement, Aug 6, 10:47 AM CDT, 4 hours 56 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
1047 AM CDT SUN AUG 6 2017

TXZ094-061630-
Fannin TX-
1047 AM CDT SUN AUG 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR FANNIN COUNTY UNTIL 1130 AM
CDT...

At 1047 AM CDT, Doppler radar was tracking a strong thunderstorm near
Dodd City, or near Bonham, moving east at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Bonham, Honey Grove, Savoy, Ector, Dodd City, Ravenna, Bonham State
Park and Windom.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3379 9585 3346 9586 3353 9638 3372 9638
      3369 9636 3369 9634 3370 9632 3377 9629
      3377 9627 3375 9623 3375 9619 3377 9617
      3380 9616
TIME...MOT...LOC 1547Z 274DEG 13KT 3362 9611

Hernandez

Special weather statement, Aug 6, 11:53 AM CDT, 3 hours 50 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
1153 AM CDT SUN AUG 6 2017

TXZ095-106-061745-
Lamar TX-Delta TX-
1153 AM CDT SUN AUG 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN LAMAR AND DELTA COUNTIES
UNTIL 1245 PM CDT...

At 1153 AM CDT, Doppler radar was tracking a strong thunderstorm 11
miles southwest of Paris, moving east at 20 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Paris, Cooper, Deport, Roxton, Pecan Gap and Toco.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3336 9533 3337 9537 3337 9545 3335 9548
      3335 9553 3336 9554 3335 9556 3336 9557
      3335 9560 3338 9586 3367 9585 3362 9531
      3338 9531
TIME...MOT...LOC 1653Z 279DEG 19KT 3355 9569

Hernandez

Special weather statement, Aug 6, 3:27 PM CDT, 16 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
327 PM CDT SUN AUG 6 2017

TXZ091-101-102-062100-
Montague-Wise-Jack-
327 PM CDT SUN AUG 6 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MONTAGUE...
NORTHWESTERN WISE AND NORTHEASTERN JACK COUNTIES...

At 327 PM CDT, a strong thunderstorm was located 9 miles west of
Chico, or 13 miles northeast of Jacksboro, moving east at 20 mph.

Wind gusts up to 50 mph and dime size hail are possible with this
storm.

Locations impacted include...
Alvord, Chico, Sunset and Newport.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3352 9768 3326 9765 3322 9800 3347 9803
      3347 9798 3351 9798
TIME...MOT...LOC 2027Z 264DEG 19KT 3333 9795

JLDunn

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:19 PM CDT	Special Weather Statement	FWD	Young	41 min
Aug 6, 7:35 AM CDT	Special Weather Statement	FWD	Lamar	40 min
Aug 6, 8:34 AM CDT	Special Weather Statement	FWD	Lamar	41 min
Aug 6, 9:15 AM CDT	Special Weather Statement	FWD	Lamar	45 min
Aug 6, 9:40 AM CDT	Areal Flood Advisory	FWD	Lamar	2 hr
Aug 6, 10:16 AM CDT	Special Weather Statement	FWD	Delta, Lamar	44 min
Aug 6, 10:22 AM CDT	Areal Flood Advisory	FWD	Fannin	3 hr
Aug 6, 10:47 AM CDT	Special Weather Statement	FWD	Fannin	43 min
Aug 6, 11:53 AM CDT	Special Weather Statement	FWD	Delta	52 min
Aug 6, 1:27 PM CDT	Areal Flood Advisory	FWD	Lamar	63 min
Aug 6, 2:59 PM CDT	Severe Thunderstorm Warning	FWD	Montague	46 min
Aug 6, 3:20 PM CDT	Flash Flood Watch	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	19 hr
Aug 6, 3:27 PM CDT	Special Weather Statement	FWD	Wise	33 min
Aug 6, 3:45 PM CDT	Severe Thunderstorm Warning	FWD	Montague	60 min
Aug 6, 4:34 PM CDT	Areal Flood Advisory	FWD	Jack, Montague, Wise	3 hr
Aug 6, 4:43 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Wise	62 min
Aug 6, 5:23 PM CDT	Special Weather Statement	FWD	Young	52 min
Aug 6, 5:44 PM CDT	Special Weather Statement	FWD	Wise	46 min
Aug 6, 6:07 PM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant, Wise	68 min
Aug 6, 6:13 PM CDT	Special Weather Statement	FWD	Stephens	47 min
Aug 6, 6:38 PM CDT	Severe Thunderstorm Warning	FWD	Parker	52 min
Aug 6, 6:42 PM CDT	Special Weather Statement	FWD	Palo Pinto	48 min
Aug 6, 6:48 PM CDT	Areal Flood Advisory	FWD	Parker	3 hr
Aug 6, 6:55 PM CDT	Special Weather Statement	FWD	Stephens	35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2017 Every severe thunderstorm warning in 2017

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.