Alert archive / Texas / Special Weather Statements in 2020

Special Weather Statement, NWS Austin/San Antonio, TX

April 3, 2020Dimmit County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Apr 3, 2020, 8:28 PM CDT for Dimmit County, Texas. It was in force for 62 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 3, 2020, 8:28 PM CDT (01:28 UTC)
Expired
Apr 3, 2020, 9:30 PM CDT
In force
62 min
Issued by
NWS Austin/San Antonio, TX

County Dimmit County, TX

The radar

The Laughlin AFB radar (KDFX), 129 km from the middle of the area, began a volume at 01:30 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

Corpus Christi, TX (KCRP), launched 00:00Z, 1.5 hours before the alert went out and 230 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, Corpus Christi, TX at 00:00Z on 2020-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1259 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, Corpus Christi, TX at 00:00Z on 2020-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
1259 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
773 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-42 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

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 3, 6:18 PM CDT, 2 hours 10 minutes earlier.

Area forecast discussion, Apr 3, 6:18 PM CDT, 2 hours 10 minutes before
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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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Hazardous weather outlook, Apr 3, 4:13 AM CDT, 16 hours 15 minutes before
Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
413 AM CDT Fri Apr 3 2020

TXZ171>173-183>194-202>209-217>225-228-040915-
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-
413 AM CDT Fri Apr 3 2020

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

.DAY ONE...Today And Tonight.

Numerous showers and thunderstorms are expected across South
Central Texas this afternoon and evening. A few storms could
become severe, producing large hail and damaging winds gusts. In
addition, some pockets of heavy rainfall are possible, which could
lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Additional showers and storms are possible on Saturday. Some
pockets of heavier rainfall could occur Saturday, leading to flash
flooding. The wet and unstable weather pattern continues into next
week, thus the potential for localized flooding may continue.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to relay any reports of severe weather and
flooding to the National Weather Service.

In the hours before

Local storm report, Apr 3, 4:40 PM CDT, 3 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
440 PM CDT FRI APR 3 2020

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

0429 PM     HAIL             2 NNW MARTINDALE        29.86N 97.86W
04/03/2020  E1.00 INCH       CALDWELL           TX   COCORAHS

            NICKEL TO QUARTER SIZED HAIL FALLING IN
            MARTINDALE.

&&

AAT
Local storm report, Apr 3, 4:59 PM CDT, 3 hours 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
459 PM CDT FRI APR 3 2020

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

0454 PM     FLASH FLOOD      3 E KYLE                29.99N 97.82W
04/03/2020                   HAYS               TX   MESONET

            STREAM GAUGES SHOWING SEVERAL FEET OF WATER
            OVER THE ROAD ON THE EAST SIDE OF KYLE ON
            COTTON GIN ROAD AND BUNTON LANE.

&&

PAY
Special weather statement, Apr 3, 5:17 PM CDT, 3 hours 11 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
517 PM CDT Fri Apr 3 2020

TXZ217-228-032315-
Maverick TX-Dimmit TX-
517 PM CDT Fri Apr 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MAVERICK AND
SOUTHWESTERN DIMMIT COUNTIES UNTIL 615 PM CDT...

At 517 PM CDT, Doppler radar was tracking a strong thunderstorm 12
miles southeast of El Indio, moving east at 25 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Asherton.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
south central Texas.

LAT...LON 2831 10025 2844 10025 2850 9974 2827 9974
TIME...MOT...LOC 2217Z 270DEG 22KT 2838 10016

BMW
Special weather statement, Apr 3, 5:28 PM CDT, 3 hours before
Special Weather Statement
National Weather Service Austin/San Antonio TX
528 PM CDT Fri Apr 3 2020

TXZ208-223-032315-
Caldwell TX-Gonzales TX-
528 PM CDT Fri Apr 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL CALDWELL AND
NORTHEASTERN GONZALES COUNTIES UNTIL 615 PM CDT...

At 528 PM CDT, Doppler radar was tracking a strong thunderstorm over
Palmeto State Park, or 8 miles southeast of Luling, moving east at 25
mph.

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

Locations impacted include...
Gonzales, Luling, Waelder, Palmeto State Park, Little New York,
Ottine, Nickle, McNeil, Dilworth and Thompsonville.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
south central Texas.

LAT...LON 2949 9721 2952 9763 2969 9763 2971 9721
      2969 9720
TIME...MOT...LOC 2228Z 270DEG 22KT 2961 9755

BMW
Local storm report, Apr 3, 6:30 PM CDT, 1 hour 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
630 PM CDT FRI APR 3 2020

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

0430 PM     TSTM WND DMG     2 NW MARTINDALE         29.86N 97.87W
04/03/2020                   CALDWELL           TX   PUBLIC

            DOWNED POWER LINES AND BROKEN POWER POLES.

&&

EW
Special weather statement, Apr 3, 8:28 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
828 PM CDT Fri Apr 3 2020

TXZ228-040230-
Dimmit TX-
828 PM CDT Fri Apr 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DIMMIT COUNTY UNTIL
930 PM CDT...

At 828 PM CDT, Doppler radar was tracking a strong thunderstorm over
Gilson Groves, or 20 miles south of Carrizo Springs, moving east at
20 mph.

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

Locations impacted include...
Chaparral Wildlife Management Area, Gilson Groves, Catarina and
Light.

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 be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2831 9983 2840 9940 2836 9939 2821 9940
      2820 9949 2820 9981
TIME...MOT...LOC 0128Z 263DEG 19KT 2824 9974

AAT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 7:16 PM CDTAreal Flood AdvisoryEWXDeWitt, Fayette, Gonzales, Lavaca3 hr
Apr 3, 7:17 PM CDTAreal Flood AdvisoryEWXKarnes3 hr
Apr 3, 8:31 PM CDTSpecial Weather StatementEWXFrio44 min
Apr 3, 9:13 PM CDTSpecial Weather StatementEWXAtascosa47 min
Apr 3, 9:20 PM CDTSevere Thunderstorm WarningEWXAtascosa, Frio35 min
Apr 3, 9:56 PM CDTSpecial Weather StatementEWXAtascosa64 min
Apr 4, 7:27 AM CDTAreal Flood AdvisoryEWXGillespie3 hr
Apr 4, 10:17 AM CDTAreal Flood AdvisoryEWXMedina, Uvalde3 hr
Apr 4, 11:01 AM CDTAreal Flood AdvisoryEWXBexar, Caldwell, Comal, Fayette, Gonzales, Guadalupe and 1 more6 hr

Nearby

Special Weather Statements in Texas, 2020Every special weather statement in 2020

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.