Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 109, NWS Austin/San Antonio, TX

May 10, 2013Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 10, 2013, 3:05 AM CDT for Val Verde County, Texas. It was in force for 25 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: May 10, 2013, 3:05 AM CDT (08:05 UTC)
Expired: May 10, 2013, 3:30 AM CDT
In force: 25 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 08:05 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 (KDRT), launched 00:00Z, 8.1 hours before the alert went out and 66 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: 1373 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 2244 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 1:31 AM CDT, 1 hour 34 minutes earlier.

Area forecast discussion, May 10, 1:31 AM CDT, 1 hour 34 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, May 9, 5:21 PM CDT, 9 hours 44 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
521 PM CDT THU MAY 9 2013

TXZ171>173-183>194-202>209-217>225-228-102230-
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-
521 PM CDT THU MAY 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TONIGHT...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS ALL
OF SOUTH CENTRAL TEXAS. A SERIES OF WEAK UPPER LEVEL DISTURBANCES
ALONG WITH A MOIST AND UNSTABLE AIR MASS AT LOW LEVELS WILL
PRODUCE FAVORABLE CONDITIONS FOR STRONG TO SEVERE THUNDERSTORMS.
LOCALLY HEAVY DOWNPOURS OF 1-2 INCHES ARE ALSO POSSIBLE FROM THE
STRONGER STORMS. THE POTENTIAL FOR SEVERE THUNDERSTORMS IS
EXPECTED TO DIMINISH IN THE EARLY MORNING HOURS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

WEAK UPPER LEVEL DISTURBANCES WILL INTERACT WITH A WEAK FRIDAY
COLD FRONT TO PRODUCE A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS
FRIDAY THROUGH SATURDAY. THERE IS A SLIGHT RISK OF SEVERE
THUNDERSTORMS FRIDAY WITH THE PRIMARY THREAT BEING LARGE HAIL.

OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER ACTIVATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY TONIGHT OR FRIDAY.

In the hours before

Local storm report, May 10, 12:04 AM CDT, 3 hours 1 minute 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>

Local storm report, May 10, 12:18 AM CDT, 2 hours 47 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>

Local storm report, May 10, 12:24 AM CDT, 2 hours 41 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, May 10, 12:31 AM CDT, 2 hours 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1231 AM CDT FRI MAY 10 2013

TXZ193-194-209-223-225-100615-
BASTROP-FAYETTE-GONZALES-LAVACA-LEE-
1231 AM CDT FRI MAY 10 2013

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN BASTROP...SOUTHEASTERN
LEE...NORTHERN LAVACA...NORTHEASTERN GONZALES AND FAYETTE COUNTIES
UNTIL 115 AM CDT...

AT 1225 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM DIME BOX TO 6 MILES
NORTHEAST OF GONZALES...AND MOVING EAST AT 50 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  FLATONIA...
  MOULTON...
  LA GRANGE...
  SCHULENBURG...
  MULDOON...
  ROUND TOP...
  FAYETTEVILLE...
  WARDA...
  DILWORTH...
  FLOY...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER
CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED
ROADWAYS.

LAT...LON 2964 9686 2949 9671 2949 9748 3039 9679
      3033 9674 3031 9664 3029 9664 3023 9673
      3019 9673 3016 9678 3015 9672 3017 9668
      3015 9664 2995 9657
TIME...MOT...LOC 0530Z 270DEG 43KT 3032 9674 2957 9732

Local storm report, May 10, 12:40 AM CDT, 2 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1240 AM CDT FRI MAY 10 2013

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

1040 PM     HAIL             12 SW KERRVILLE         29.92N  99.28W
05/09/2013  E0.75 INCH       KERR               TX   BROADCAST MEDIA

            HAIL COVERED HWY 16 TWELVE MILES SOUTHWEST OF
            KERRVILLE. LARGEST HAIL WAS PENNY SIZE.

&&

EVENT NUMBER EWX1300393

BF

Special weather statement, May 10, 1:16 AM CDT, 1 hour 49 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
116 AM CDT FRI MAY 10 2013

TXZ209-225-100645-
FAYETTE-LAVACA-
116 AM CDT FRI MAY 10 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN LAVACA AND EASTERN
FAYETTE COUNTIES UNTIL 145 AM CDT...

AT 111 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM ROUND TOP TO 6 MILES
SOUTHWEST OF LA GRANGE TO 7 MILES EAST OF MOULTON...AND MOVING EAST
AT 25 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  SCHULENBURG...
  FAYETTEVILLE...
  MORAVIA...
  SWISS ALP...
  HIGH HILL...
  AMMANNSVILLE...
  HACKBERRY...
  MULLINS PRAIRIE...
  DUBINA...
  HOLMAN...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER
CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED
ROADWAYS.

LAT...LON 2964 9686 2959 9683 2959 9680 2957 9679
      2948 9712 2983 9700 3011 9663 2997 9657
      2995 9657
TIME...MOT...LOC 0616Z 252DEG 23KT 3008 9661 2986 9690
          2959 9699

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:09 PM CDT	Special Weather Statement	EWX	Dimmit	66 min
May 9, 7:32 PM CDT	Special Weather Statement	EWX	Mason	73 min
May 9, 7:35 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Maverick	55 min
May 9, 7:55 PM CDT	Special Weather Statement	EWX	Real	80 min
May 9, 8:03 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kerr, Real	72 min
May 9, 8:07 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Llano	68 min
May 9, 8:16 PM CDT	Tornado Warning	EWX	Edwards, Kerr, Real	44 min
May 9, 8:19 PM CDT	Tornado Warning	EWX	Gillespie	56 min
May 9, 8:28 PM CDT	Special Weather Statement	EWX	Maverick	47 min
May 9, 9:04 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Gillespie, Kendall, Kerr, Real	56 min
May 9, 9:09 PM CDT	Tornado Warning	EWX	Gillespie	51 min
May 9, 9:36 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Kendall	54 min
May 9, 9:58 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kerr	47 min
May 9, 10:14 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Comal, Hays, Kendall	61 min
May 9, 10:27 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kerr	48 min
May 9, 10:55 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Caldwell, Comal, Guadalupe, Hays	65 min
May 9, 11:24 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Gonzales, Guadalupe, Hays	51 min
May 9, 11:44 PM CDT	Special Weather Statement	EWX	Guadalupe	46 min
May 9, 11:51 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Gonzales, Guadalupe	54 min
May 10, 12:31 AM CDT	Special Weather Statement	EWX	Fayette	44 min
May 10, 1:16 AM CDT	Special Weather Statement	EWX	Fayette	29 min
May 10, 3:52 AM CDT	Special Weather Statement	EWX	Val Verde	23 min
May 10, 4:23 AM CDT	Special Weather Statement	EWX	Edwards	52 min
May 10, 4:24 AM CDT	Special Weather Statement	EWX	Edwards	51 min
May 10, 4:49 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Kerr, Real	41 min
May 10, 5:27 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Gillespie, Kerr	33 min
May 10, 5:59 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Comal, Kendall, Kerr	46 min
May 10, 6:40 AM CDT	Special Weather Statement	EWX	Medina	50 min
May 10, 6:47 AM CDT	Special Weather Statement	EWX	Comal, Hays	43 min
May 10, 7:17 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Medina	43 min
May 10, 7:41 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Comal, Guadalupe, Hays	49 min
May 10, 7:53 AM CDT	Severe Thunderstorm Warning	EWX	Bexar, Guadalupe, Wilson	52 min
May 10, 8:30 AM CDT	Special Weather Statement	EWX	Wilson	45 min
May 10, 8:38 AM CDT	Special Weather Statement	EWX	Fayette	37 min
May 10, 8:42 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Fayette, Gonzales	48 min
May 10, 9:09 AM CDT	Special Weather Statement	EWX	Lavaca	51 min
May 10, 9:14 AM CDT	Severe Thunderstorm Warning	EWX	Lavaca	46 min
May 10, 9:22 AM CDT	Special Weather Statement	EWX	DeWitt	38 min
May 10, 9:32 AM CDT	Special Weather Statement	EWX	Lavaca	43 min
May 10, 1:03 PM CDT	Special Weather Statement	EWX	Gonzales	42 min
May 10, 1:41 PM CDT	Special Weather Statement	EWX	Terrell	34 min
May 10, 1:44 PM CDT	Special Weather Statement	EWX	Lavaca	46 min
May 10, 2:07 PM CDT	Special Weather Statement	EWX	Val Verde	38 min
May 10, 2:48 PM CDT	Special Weather Statement	EWX	Val Verde	42 min
May 10, 3:02 PM CDT	Special Weather Statement	EWX	Val Verde	58 min
May 10, 3:54 PM CDT	Special Weather Statement	EWX	Val Verde	51 min
May 10, 4:07 PM CDT	Special Weather Statement	EWX	Real	53 min
May 10, 4:30 PM CDT	Special Weather Statement	EWX	Kinney	45 min
May 10, 4:46 PM CDT	Special Weather Statement	EWX	Medina	44 min
May 10, 4:56 PM CDT	Special Weather Statement	EWX	Val Verde	49 min
May 10, 5:06 PM CDT	Special Weather Statement	EWX	Burnet	39 min
May 10, 5:15 PM CDT	Special Weather Statement	EWX	Bandera, Kinney, Uvalde	45 min
May 10, 5:20 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	40 min
May 10, 5:28 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Uvalde	62 min
May 10, 5:38 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Medina	52 min
May 10, 5:40 PM CDT	Special Weather Statement	EWX	Kinney	50 min
May 10, 5:42 PM CDT	Special Weather Statement	EWX	Burnet	48 min
May 10, 5:54 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Val Verde	66 min
May 10, 5:59 PM CDT	Special Weather Statement	EWX	Llano	46 min
May 10, 6:05 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	40 min
May 10, 6:07 PM CDT	Special Weather Statement	EWX	Kendall	53 min
May 10, 6:12 PM CDT	Severe Thunderstorm Warning	EWX	Medina, Uvalde	48 min
May 10, 6:16 PM CDT	Severe Thunderstorm Warning	EWX	Llano	44 min
May 10, 6:23 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Medina	67 min
May 10, 6:33 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Medina, Uvalde, Zavala	57 min
May 10, 6:39 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Kendall, Kerr	51 min
May 10, 6:40 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every severe thunderstorm warning in 2013

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.