Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Austin/San Antonio, TX

January 2, 2017Comal County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Jan 2, 2017, 5:14 AM CST for Comal County, Texas. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 2, 2017, 5:14 AM CST (11:14 UTC)
Expired: Jan 2, 2017, 5:45 AM CST
In force: 31 min
Issued by: NWS Austin/San Antonio, TX

County Comal County, TX

The radar

The Austin/San Antonio radar (KEWX), 44 km from the middle of the area, began a volume at 11:14 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

Del Rio, TX (KDLF), launched 00:00Z, 11.2 hours before the alert went out and 233 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: 26 J/kg
Mixed-layer CIN: -450 J/kg
Mixed-layer LCL: 2272 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 205 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this special weather statement went out at Jan 2, 2:20 AM CST, 2 hours 54 minutes earlier.

Area forecast discussion, Jan 2, 2:20 AM CST, 2 hours 54 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, Jan 2, 1:31 AM CST, 3 hours 43 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>

Special weather statement, Jan 2, 3:09 AM CST, 2 hours 5 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>

Special weather statement, Jan 2, 3:53 AM CST, 1 hour 21 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
353 AM CST MON JAN 2 2017

TXZ171>173-188-190>192-021030-
Hays TX-Williamson TX-Llano TX-Gillespie TX-Travis TX-Blanco TX-
Burnet TX-
353 AM CST MON JAN 2 2017

...SIGNIFICANT WEATHER ADVISORY FOR BURNET...NORTHWESTERN TRAVIS...
WESTERN WILLIAMSON...GILLESPIE...BLANCO...NORTHWESTERN HAYS AND LLANO
COUNTIES UNTIL 430 AM CST...

At 351 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles north of Briggs to near Willow City to
near Mountain Home. Movement was to the east southeast at 30 mph.

Dime size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Cedar Park, Georgetown, Fredericksburg, Kingsland, Marble Falls,
Burnet, Llano, Dripping Springs, Bertram, Round Mountain, Buchanan
Dam, Serenada, Leander, Gainesville, Lakeway, Lago Vista, Granite
Shoals, Bee Cave, Horseshoe Bay and The Hills.

These storms 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.

A severe thunderstorm watch remains in effect until 900 AM CST for
south central Texas.

LAT...LON 3091 9783 3085 9757 3011 9811 3014 9930
      3037 9930 3050 9912 3050 9897 3061 9896
      3082 9867 3104 9799 3103 9791
TIME...MOT...LOC 0951Z 335DEG 14KT 3098 9788 3042 9865 3017 9942

LJH

Special weather statement, Jan 2, 4:15 AM CST, 59 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
415 AM CST MON JAN 2 2017

TXZ173-192>194-021100-
Williamson TX-Travis TX-Lee TX-Bastrop TX-
415 AM CST MON JAN 2 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BASTROP...TRAVIS...
WILLIAMSON AND NORTHWESTERN LEE COUNTIES UNTIL 500 AM CST...

At 413 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from Jarrell to near Bee Cave. Movement was east at
40 mph.

Wind gusts up to 50 mph and small hail will be possible with these
storms.

Locations impacted include...
Austin, Round Rock, Cedar Park, Georgetown, Pflugerville, Taylor,
Elgin, Granger, Windemere, Tanglewood Forest, Anderson Mill, Austin
Bergstrom Int Ap, Serenada, Hutto, Manor, Bee Cave, West Lake Hills,
Bartlett, Rollingwood and Mustang Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms 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.

&&

A Severe Thunderstorm Watch remains in effect until 900 AM CST for
South Central Texas.

LAT...LON 3074 9727 3046 9715 3047 9713 2998 9752
      3007 9765 3006 9767 3026 9801 3085 9757
TIME...MOT...LOC 1013Z 291DEG 33KT 3083 9758 3031 9801

LJH

Special weather statement, Jan 2, 5:00 AM CST, 14 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
500 AM CST MON JAN 2 2017

TXZ173-192>194-021130-
Williamson TX-Travis TX-Lee TX-Bastrop TX-
500 AM CST MON JAN 2 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BASTROP...
SOUTHEASTERN TRAVIS...SOUTHEASTERN WILLIAMSON AND NORTHWESTERN LEE
COUNTIES UNTIL 530 AM CST...

At 459 AM CST, Doppler radar was tracking a strong thunderstorm near
Wyldwood, or 10 miles east of Austin Bergstrom Int Ap, moving
northeast at 45 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Elgin, Wyldwood, Camp Swift, Webberville, Blue, Beyarsville, Knobb
Springs, McDade, Cedar Hills and Butler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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.

&&

A Severe Thunderstorm Watch remains in effect until 900 AM CST for
South Central Texas.

LAT...LON 3053 9718 3046 9715 3048 9712 3041 9704
      3006 9745 3020 9762 3060 9726
TIME...MOT...LOC 1059Z 225DEG 39KT 3022 9749

LJH

Special weather statement, Jan 2, 5:14 AM CST, 0 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
514 AM CST MON JAN 2 2017

TXZ205-206-021145-
Bexar TX-Comal TX-
514 AM CST MON JAN 2 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL BEXAR AND CENTRAL
COMAL COUNTIES UNTIL 545 AM CST...

At 513 AM CST, Doppler radar was tracking a strong thunderstorm near
Fair Oaks Ranch, or 11 miles southeast of Boerne, moving northeast at
30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
San Antonio, Canyon Lake Dam, Fair Oaks Ranch, Canyon Lake, Bulverde,
Shavano Park, Timberwood Park, Fischer, The Dominion, Spring Branch,
Leon Springs, Cross Mountain, Anhalt, Specht Store, Sattler, Scenic
Oaks and Startzville.

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.

A Severe Thunderstorm Watch remains in effect until 900 AM CST for
South Central Texas.

LAT...LON 2985 9813 2958 9858 2974 9870 2974 9866
      2975 9866 2975 9864 3002 9832
TIME...MOT...LOC 1113Z 232DEG 26KT 2972 9857

LJH

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 2, 12:19 AM CST	Special Weather Statement	EWX	Val Verde	26 min
Jan 2, 1:31 AM CST	Special Weather Statement	EWX	Edwards	44 min
Jan 2, 3:09 AM CST	Special Weather Statement	EWX	Gillespie, Kerr, Llano, Real	36 min
Jan 2, 3:53 AM CST	Special Weather Statement	EWX	Blanco, Burnet, Gillespie, Llano	37 min
Jan 2, 4:15 AM CST	Special Weather Statement	EWX	Travis, Williamson	45 min
Jan 2, 5:00 AM CST	Special Weather Statement	EWX	Bastrop	30 min
Jan 2, 5:26 AM CST	Special Weather Statement	EWX	Lee	34 min
Jan 2, 5:36 AM CST	Severe Thunderstorm Warning	EWX	Bastrop, Lee	39 min

Nearby

Special Weather Statements in Texas, 2017 Every special weather statement 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.