Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Austin/San Antonio, TX

April 17, 2017Zavala County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Apr 17, 2017, 1:12 AM CDT for Zavala County, Texas. It was in force for 48 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: Apr 17, 2017, 1:12 AM CDT (06:12 UTC)
Expired: Apr 17, 2017, 2:00 AM CDT
In force: 48 min
Issued by: NWS Austin/San Antonio, TX

County Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 84 km from the middle of the area, began a volume at 06:13 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, 6.2 hours before the alert went out and 127 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: 2034 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1078 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 34 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 Apr 17, 12:47 AM CDT, 25 minutes earlier.

Area forecast discussion, Apr 17, 12:47 AM CDT, 25 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, Apr 16, 3:51 PM CDT, 9 hours 21 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
351 PM CDT Sun Apr 16 2017

TXZ171>173-183>194-202>209-217>225-228-171200-
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala-
Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit-
351 PM CDT Sun Apr 16 2017

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...This Afternoon And Tonight.

Isolated strong to marginally severe thunderstorms are possible
this evening across the Rio Grande Plains. Damaging winds and
large hail are the main threats. Locally heavy rains are possible
this evening into the overnight across the Rio Grande Plains and
the Edwards Plateau. These rains may cause isolated flash flooding
or small stream flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Strong to marginally severe thunderstorms are possible in the
afternoon across areas near the Coastal Plains.

Otherwise, no hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter reports may be needed this afternoon and evening.

In the hours before

Local storm report, Apr 16, 10:10 PM CDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1010 PM CDT SUN APR 16 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     HAIL             5 NNE MONTELL           29.60N 100.0W
04/16/2017  E0.75 INCH       UVALDE             TX   COCORAHS

            COCORAHS OBSERVER REPORTING PENNY SIZE HAIL.
            REPORTED VIA EM UVALDE.

&&

YB

Special weather statement, Apr 16, 10:11 PM CDT, 3 hours 1 minute before

Special Weather Statement
National Weather Service Austin/San Antonio TX
1011 PM CDT SUN APR 16 2017

TXZ184-185-202-203-217-218-228-170415-
Maverick TX-Uvalde TX-Kinney TX-Dimmit TX-Edwards TX-Real TX-
Zavala TX-
1011 PM CDT SUN APR 16 2017

...SIGNIFICANT WEATHER ADVISORY FOR KINNEY...MAVERICK...NORTHWESTERN
DIMMIT...UVALDE...ZAVALA...EDWARDS AND REAL COUNTIES UNTIL 1115 PM
CDT...

At 1011 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 17 miles south of Sonora to 11 miles northeast
of Flour Mills to 8 miles northwest of Vance to 6 miles southeast of
Camp Wood to 8 miles east of Cline to near Las Colonias to 8 miles
southwest of Cometa to 8 miles southwest of El Indio. Movement was
north at 30 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Eagle Pass, Uvalde, Crystal City, Carrizo Springs, Brackettville,
Rocksprings, Leakey, Spofford, La Pryor, El Indio, Batesville, Camp
Wood, Laguna, Chula Vista-River Spur, Tuff, Concan, Uvalde Estates,
Dabney, Flour Mills and Anacacho.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

&&

LAT...LON 2848 10037 2850 10033 2852 10039 2858 10040
      2866 10050 2883 10056 3029 10069 3029 9976
      3008 9976 3007 9972 2963 9965 2861 9959
      2833 10030
TIME...MOT...LOC 0311Z 196DEG 24KT 3033 10055 3010 10048 2987 10014
2962 9993 2929 9994 2876 9988 2856 10009 2844 10042

CP

Special weather statement, Apr 16, 10:48 PM CDT, 2 hours 24 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, Apr 16, 11:46 PM CDT, 1 hour 26 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, Apr 16, 11:47 PM CDT, 1 hour 25 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, Apr 17, 1:12 AM CDT, 0 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 Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 16, 7:43 PM CDT	Special Weather Statement	EWX	Zavala	32 min
Apr 16, 7:58 PM CDT	Special Weather Statement	EWX	Maverick	47 min
Apr 16, 8:04 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	41 min
Apr 16, 8:07 PM CDT	Severe Thunderstorm Warning	EWX	Maverick, Zavala	53 min
Apr 16, 8:19 PM CDT	Areal Flood Advisory	EWX	Dimmit, Maverick, Zavala	3 hr
Apr 16, 8:26 PM CDT	Severe Thunderstorm Warning	EWX	Kinney	64 min
Apr 16, 8:35 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick, Uvalde	55 min
Apr 16, 8:37 PM CDT	Special Weather Statement	EWX	Dimmit	23 min
Apr 16, 8:47 PM CDT	Flash Flood Watch	EWX	Bandera, Dimmit, Edwards, Frio, Kerr, Kinney and 6 more	6 hr
Apr 16, 9:03 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Kinney, Maverick, Zavala	42 min
Apr 16, 9:13 PM CDT	Flash Flood Warning	EWX	Dimmit, Kinney, Maverick, Uvalde, Zavala	3 hr
Apr 16, 9:28 PM CDT	Special Weather Statement	EWX	Edwards, Real, Uvalde	62 min
Apr 16, 9:30 PM CDT	Special Weather Statement	EWX	Kinney	60 min
Apr 16, 9:42 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Maverick	30 min
Apr 16, 9:52 PM CDT	Areal Flood Advisory	EWX	Edwards, Real	3 hr
Apr 16, 10:11 PM CDT	Special Weather Statement	EWX	Edwards, Kinney, Maverick, Real, Uvalde, Zavala	64 min
Apr 16, 10:32 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	44 min
Apr 16, 10:48 PM CDT	Special Weather Statement	EWX	Bandera, Dimmit, Edwards, Frio, Kerr, Kinney and 5 more	57 min
Apr 16, 11:21 PM CDT	Areal Flood Advisory	EWX	Bandera, Frio, Kerr, Medina, Real, Uvalde and 1 more	3 hr
Apr 16, 11:46 PM CDT	Special Weather Statement	EWX	Bandera, Frio, Gillespie, Kerr, Medina	59 min
Apr 16, 11:47 PM CDT	Special Weather Statement	EWX	Dimmit, Maverick, Zavala	58 min
Apr 17, 12:15 AM CDT	Areal Flood Advisory	EWX	Dimmit, Maverick, Zavala	3 hr
Apr 17, 1:05 PM CDT	Special Weather Statement	EWX	Fayette, Lavaca	40 min
Apr 17, 1:50 PM CDT	Areal Flood Advisory	EWX	Lavaca	3 hr
Apr 17, 1:51 PM CDT	Areal Flood Advisory	EWX	Comal	3 hr
Apr 17, 2:11 PM CDT	Flash Flood Warning	EWX	Comal	3 hr
Apr 17, 3:53 PM CDT	Areal Flood Advisory	EWX	Guadalupe	3 hr
Apr 17, 4:52 PM CDT	Special Weather Statement	EWX	Uvalde	38 min
Apr 17, 4:57 PM CDT	Special Weather Statement	EWX	Gonzales	33 min
Apr 17, 5:05 PM CDT	Special Weather Statement	EWX	Uvalde	40 min
Apr 17, 5:28 PM CDT	Special Weather Statement	EWX	DeWitt	32 min
Apr 17, 5:43 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Zavala	62 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.