Alert archive / Texas / Special Weather Statements in 2016

Special Weather Statement, NWS Austin/San Antonio, TX

April 26, 2016Val Verde County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Apr 26, 2016, 11:12 PM CDT for Val Verde County, Texas. It was in force for 33 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 26, 2016, 11:12 PM CDT (04:12 UTC)
Expired
Apr 26, 2016, 11:45 PM CDT
In force
33 min
Issued by
NWS Austin/San Antonio, TX

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 138 km from the middle of the area, began a volume at 04:13 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, 4.2 hours before the alert went out and 100 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2016-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2806 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2016-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2806 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
1552 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
322 m²/s²
Significant tornado parameter
0.8
Supercell composite
17.9

Open this sounding in Storm Lab

The text

As transmitted.

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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 26, 8:12 PM CDT, 3 hours earlier.

Area forecast discussion, Apr 26, 8:12 PM CDT, 3 hours before
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    <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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Apr 26, 10:29 PM CDT, 43 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1029 PM CDT TUE APR 26 2016

TXZ171>173-183>194-202>209-217>225-228-280330-
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-
1029 PM CDT TUE APR 26 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TONIGHT.

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PORTIONS OF THE
AREA THROUGH 5AM. A LINE OF STRONG TO SEVERE THUNDERSTORMS HAS
BEGUN TO DEVELOP ACROSS PORTION OF THE EDWARDS PLATEAU AND WILL
SHIFT THROUGH THE HILL COUNTRY AND PORTIONS OF THE I-35 CORRIDOR
LATE TONIGHT THROUGH EARLY WEDNESDAY MORNING. THIS LINE OF STORMS
WILL BE CAPABLE OF PRODUCING LARGE HAIL UP TO 2 INCHES IN DIAMETER
AND DAMAGING WIND GUSTS OF 60 TO 70 MPH. AN ISOLATED TORNADO
CANNOT BE RULED OUT AS WELL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

ANOTHER STORM SYSTEM WILL APPROACH THE AREA ON FRIDAY AND
SATURDAY BRINGING ANOTHER CHANCE FOR STRONG TO SEVERE
THUNDERSTORMS AS WELL AS HEAVY RAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS EVENING AS THE LINE
BEGINS TO MOVE THROUGH SOUTH CENTRAL TEXAS.

ALLEN

In the hours before

Special weather statement, Apr 26, 11:12 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1112 PM CDT TUE APR 26 2016

TXZ183-270445-
VAL VERDE TX-
1112 PM CDT TUE APR 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN VAL VERDE COUNTY
UNTIL 1145 PM CDT...

AT 1111 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES WEST OF JUNO...MOVING EAST AT 40 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
JUNO.

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 AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3027 10142 3029 10133 3029 10088 3008 10085
      3005 10142
TIME...MOT...LOC 0411Z 260DEG 33KT 3020 10129

LJH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 11:33 PM CDTSevere Thunderstorm WarningEWXEdwards, Val Verde72 min
Apr 26, 11:44 PM CDTSpecial Weather StatementEWXBurnet46 min
Apr 27, 12:05 AM CDTSpecial Weather StatementEWXBurnet40 min
Apr 27, 12:21 AM CDTSevere Thunderstorm WarningEWXEdwards, Gillespie, Kerr, Real, Val Verde69 min
Apr 27, 12:25 AM CDTSevere Thunderstorm WarningEWXBurnet50 min
Apr 27, 12:48 AM CDTSpecial Weather StatementEWXEdwards42 min
Apr 27, 12:57 AM CDTSevere Thunderstorm WarningEWXGillespie, Llano63 min
Apr 27, 1:11 AM CDTSpecial Weather StatementEWXWilliamson64 min
Apr 27, 1:23 AM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie67 min
Apr 27, 1:34 AM CDTSpecial Weather StatementEWXBandera, Kendall, Real41 min
Apr 27, 1:41 AM CDTSevere Thunderstorm WarningEWXKendall, Kerr64 min
Apr 27, 2:04 AM CDTSevere Thunderstorm WarningEWXBastrop, Bexar, Caldwell, Comal, Guadalupe, Hays and 2 more56 min
Apr 27, 2:11 AM CDTSpecial Weather StatementEWXBexar, Medina, Uvalde64 min
Apr 27, 2:26 AM CDTSpecial Weather StatementEWXUvalde49 min
Apr 27, 2:30 AM CDTSpecial Weather StatementEWXWilliamson45 min
Apr 27, 3:01 AM CDTSpecial Weather StatementEWXAtascosa, Bastrop, Bexar, Caldwell, Fayette, Frio and 8 more59 min
Apr 27, 3:39 AM CDTSpecial Weather StatementEWXCaldwell36 min
Apr 27, 3:44 AM CDTSpecial Weather StatementEWXMedina31 min
Apr 27, 3:57 AM CDTSpecial Weather StatementEWXAtascosa, Bastrop, Bexar, Caldwell, Comal, DeWitt and 8 more63 min
Apr 27, 4:34 AM CDTSpecial Weather StatementEWXAtascosa56 min
Apr 27, 4:35 AM CDTSpecial Weather StatementEWXGuadalupe, Wilson55 min
Apr 27, 4:43 AM CDTSevere Thunderstorm WarningEWXAtascosa, Bexar, Frio, Medina25 min
Apr 27, 4:53 AM CDTSpecial Weather StatementEWXWilson37 min
Apr 27, 5:04 AM CDTSpecial Weather StatementEWXGuadalupe41 min
Apr 27, 5:37 AM CDTSpecial Weather StatementEWXAtascosa38 min
Apr 27, 6:19 AM CDTSpecial Weather StatementEWXKarnes56 min
Apr 27, 7:15 AM CDTSpecial Weather StatementEWXKarnes30 min

Nearby

Special Weather Statements in Texas, 2016Every special weather statement in 2016

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.