Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 301, NWS Fort Worth, TX

July 23, 2017Henderson County, Kaufman County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jul 23, 2017, 8:46 PM CDT for Henderson County, Kaufman County, Texas. It was in force for 44 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 23, 2017, 8:46 PM CDT (01:46 UTC)
Expired: Jul 23, 2017, 9:30 PM CDT
In force: 44 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Henderson County, TX, Kaufman County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 117 km from the middle of the area, began a volume at 01:48 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 00:00Z, 1.8 hours before the alert went out and 124 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: 2042 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1940 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -42 m²/s²
0-3 km storm-relative helicity: 45 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 23, 6:48 PM CDT, 1 hour 58 minutes earlier.

Area forecast discussion, Jul 23, 6:48 PM CDT, 1 hour 58 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Jul 23, 3:23 PM CDT, 5 hours 23 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, Jul 23, 4:21 PM CDT, 4 hours 25 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
421 PM CDT SUN JUL 23 2017

TXZ158-232145-
Bell TX-
421 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BELL COUNTY UNTIL 445 PM
CDT...

At 421 PM CDT, Doppler radar was tracking a strong thunderstorm near
Temple, moving southwest at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Temple, Belton, Nolanville, Morgan's Point Resort, Salado, Little
River-Academy and Troy.

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.

Frequent cloud to ground lightning is occurring with this storm. Seek
a safe shelter inside a building or vehicle.

&&

LAT...LON 3125 9736 3113 9720 3088 9737 3105 9762
TIME...MOT...LOC 2121Z 039DEG 14KT 3114 9734

30

Special weather statement, Jul 23, 4:47 PM CDT, 3 hours 59 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
447 PM CDT SUN JUL 23 2017

TXZ116-232215-
Palo Pinto TX-
447 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PALO PINTO COUNTY
UNTIL 515 PM CDT...

At 447 PM CDT, Doppler radar was tracking a strong thunderstorm near
Gordon, or 17 miles northeast of Ranger, moving south at 5 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Gordon, Strawn and Mingus.

LAT...LON 3271 9857 3271 9829 3251 9830 3252 9857
TIME...MOT...LOC 2147Z 017DEG 4KT 3261 9843

30

Special weather statement, Jul 23, 4:59 PM CDT, 3 hours 47 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
459 PM CDT SUN JUL 23 2017

TXZ116-232230-
Palo Pinto TX-
459 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL PALO PINTO COUNTY
UNTIL 530 PM CDT...

At 459 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Possum Kingdom State Park, or 22 miles northeast
of Ranger, moving southwest at 10 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

This storm will remain over mainly rural areas of west central Palo
Pinto County.

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.

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

&&

LAT...LON 3284 9858 3284 9852 3272 9836 3266 9858
TIME...MOT...LOC 2159Z 067DEG 9KT 3275 9849

05

Special weather statement, Jul 23, 5:06 PM CDT, 3 hours 40 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
506 PM CDT SUN JUL 23 2017

TXZ122-232230-
Van Zandt TX-
506 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN VAN ZANDT COUNTY
UNTIL 530 PM CDT...

At 506 PM CDT, Doppler radar was tracking a strong thunderstorm over
Edom, or 17 miles northeast of Athens, moving south at 25 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Edom.

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.

Frequent cloud to ground lightning is occurring with this storm. Seek
a safe shelter inside a building or vehicle.

&&

LAT...LON 3236 9575 3246 9572 3243 9553 3242 9552
      3241 9550 3240 9550 3237 9547 3237 9546
      3236 9545
TIME...MOT...LOC 2206Z 008DEG 23KT 3238 9564

05

Special weather statement, Jul 23, 5:08 PM CDT, 3 hours 38 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
508 PM CDT SUN JUL 23 2017

TXZ135-148-232245-
Anderson TX-Henderson TX-
508 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR FAR SOUTHEASTERN HENDERSON AND
FAR NORTHEAST ANDERSON COUNTIES UNTIL 545 PM CDT...

At 507 PM CDT, Doppler radar was tracking a strong thunderstorm over
Berryville, or 15 miles northwest of Jacksonville. This storm was
nearly stationary.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Frankston, Berryville, Coffee City, Poynor and Moore Station.

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.

Frequent cloud to ground lightning is occurring with this storm. Seek
a safe shelter inside a building or vehicle.

&&

LAT...LON 3203 9544 3201 9543 3199 9545 3196 9544
      3199 9565 3219 9556 3218 9547 3215 9548
      3214 9546 3211 9546 3208 9542 3207 9544
      3205 9544 3204 9542
TIME...MOT...LOC 2207Z 009DEG 4KT 3211 9547

05

Special weather statement, Jul 23, 5:36 PM CDT, 3 hours 10 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 7:41 PM CDT	Special Weather Statement	FWD	Anderson	34 min
Jul 23, 7:56 PM CDT	Special Weather Statement	FWD	Fannin, Lamar	64 min
Jul 23, 8:17 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Grayson, Lamar	58 min
Jul 23, 8:56 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Delta, Hopkins, Hunt	64 min
Jul 23, 9:05 PM CDT	Special Weather Statement	FWD	Freestone	25 min
Jul 23, 9:18 PM CDT	Areal Flood Advisory	FWD	Fannin, Grayson	3 hr
Jul 23, 9:21 PM CDT	Special Weather Statement	FWD	Cooke, Denton, Montague, Wise	39 min
Jul 23, 9:44 PM CDT	Special Weather Statement	FWD	Dallas, Kaufman, Rains, Rockwall, Tarrant, Van Zandt	61 min
Jul 23, 10:05 PM CDT	Areal Flood Advisory	FWD	Cooke, Montague	115 min
Jul 23, 10:56 PM CDT	Special Weather Statement	FWD	Tarrant	34 min
Jul 23, 11:11 PM CDT	Areal Flood Advisory	FWD	Denton, Wise	3 hr
Jul 24, 1:22 AM CDT	Areal Flood Advisory	FWD	Tarrant	113 min
Jul 24, 2:14 AM CDT	Areal Flood Advisory	FWD	Denton, Wise	3 hr
Jul 24, 9:25 AM CDT	Areal Flood Advisory	FWD	Anderson	3 hr
Jul 24, 2:19 PM CDT	Areal Flood Advisory	FWD	Freestone, Limestone	116 min
Jul 24, 2:22 PM CDT	Special Weather Statement	FWD	Limestone	23 min
Jul 24, 2:33 PM CDT	Severe Thunderstorm Warning	FWD	Limestone	38 min
Jul 24, 2:59 PM CDT	Special Weather Statement	FWD	Stephens	31 min
Jul 24, 3:14 PM CDT	Heat Advisory	FWD	Anderson, Bell, Bosque, Collin, Cooke, Coryell and 30 more	4 days
Jul 24, 3:39 PM CDT	Special Weather Statement	FWD	Milam	36 min
Jul 24, 3:52 PM CDT	Areal Flood Advisory	FWD	Falls, Milam, Robertson	113 min
Jul 24, 6:42 PM CDT	Special Weather Statement	FWD	Comanche	33 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.