Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Corpus Christi, TX

April 30, 2021La Salle County, Texas

NWS Corpus Christi, TX issued this special weather statement at Apr 30, 2021, 6:46 PM CDT for La Salle County, Texas. It was in force for 44 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 30, 2021, 6:46 PM CDT (23:46 UTC)
Expired
Apr 30, 2021, 7:30 PM CDT
In force
44 min
Issued by
NWS Corpus Christi, TX

County La Salle County, TX

The radar

The Laughlin AFB radar (KDFX), 148 km from the middle of the area, began a volume at 23:47 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 12:00Z, 11.8 hours before the alert went out and 187 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 12:00Z on 2021-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 63 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 12:00Z on 2021-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.193958Sfc1 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
63 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Corpus Christi, TX wrote its last area forecast discussion before this special weather statement went out at Apr 30, 3:46 PM CDT, 3 hours earlier.

Area forecast discussion, Apr 30, 3:46 PM CDT, 3 hours 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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, Apr 30, 3:53 PM CDT, 2 hours 53 minutes before
Hazardous Weather Outlook
National Weather Service Corpus Christi TX
353 PM CDT Fri Apr 30 2021

TXZ229>234-239>247-342>347-442-443-447-012100-
La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval-
Jim Wells-Inland Kleberg-Inland Nueces-Inland San Patricio-
Coastal Aransas-Inland Refugio-Inland Calhoun-Coastal Kleberg-
Coastal Nueces-Coastal San Patricio-Aransas Islands-
Coastal Refugio-Coastal Calhoun-Kleberg Islands-Nueces Islands-
Calhoun Islands-
353 PM CDT Fri Apr 30 2021

This hazardous weather outlook is for South Texas.

.DAY ONE...This afternoon and Tonight

A Coastal Flood Advisory is in effect through 1 PM Saturday.

There is a High risk of rip currents for Gulf facing beaches
through this evening.

Scattered to numerous thunderstorms are expected today and
tonight. Some of the storms will be capable of producing strong
wind gusts and locally heavy rainfall.

A Flash Flood Watch is in effect through Saturday.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Isolated thunderstorms are possible Sunday morning as the upper
level disturbance continues to shift east. Isolated showers and
thunderstorms are possible again Tuesday ahead of another frontal
boundary.

GMZ230-235-250-255-270-275-012100-
Bays and Waterways from Baffin Bay to Port Aransas-
Bays and Waterways from Port Aransas to Port O'Connor-
Coastal waters from Baffin Bay to Port Aransas out 20 NM-
Coastal waters from Port Aransas to Matagorda Ship Channel out
20 NM-Waters from Baffin Bay to Port Aransas from 20 to 60 NM-
Waters from Port Aransas to Matagorda Ship Channel from 20 to
60 NM-
353 PM CDT Fri Apr 30 2021

This hazardous weather outlook is for the Middle Texas
Coastal Waters.

.DAY ONE...This afternoon and Tonight

A Small Craft Advisory is in effect for the northern bays and
coastal waters from 1 PM today through 1 AM Saturday.

Scattered to numerous thunderstorms are expected today through
tonight. Some of the storms will be capable of producing strong
wind gusts and locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Isolated thunderstorms Sunday morning. Isolated showers and
thunderstorms are possible again Tuesday ahead of another frontal
boundary.

In the hours before

Special weather statement, Apr 30, 6:46 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Corpus Christi TX
646 PM CDT Fri Apr 30 2021

TXZ229-010030-
La Salle-
646 PM CDT Fri Apr 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN LA SALLE COUNTY...

At 645 PM CDT, a strong thunderstorm was located near Cotulla, moving
northeast at 35 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Cotulla, Los Angeles and Gardendale.

This includes Interstate 35 between mile markers 61 and 77.

If outdoors, consider seeking shelter inside a building.

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.

LAT...LON 2865 9880 2860 9880 2828 9921 2842 9935
      2864 9913
TIME...MOT...LOC 2345Z 230DEG 33KT 2842 9919

EMF/PH

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 2:41 AM CDTSpecial Marine WarningCRP34 min
Apr 30, 3:02 AM CDTSpecial Marine WarningCRP43 min
Apr 30, 3:40 AM CDTSpecial Marine WarningCRP50 min
Apr 30, 4:15 AM CDTFlash Flood WatchCRPAransas, Bee, Calhoun, Goliad, Jim Wells, Kleberg and 5 more39 hr
Apr 30, 4:22 AM CDTRip Current StatementCRPAransas, Calhoun, Kleberg, Nueces15 hr
Apr 30, 4:24 AM CDTSmall Craft AdvisoryCRP21 hr
Apr 30, 4:40 AM CDTSpecial Weather StatementCRPNueces35 min
Apr 30, 5:09 AM CDTSpecial Weather StatementCRPNueces36 min
Apr 30, 5:49 AM CDTSpecial Weather StatementCRPSan Patricio41 min
Apr 30, 7:19 AM CDTAreal Flood AdvisoryCRPAransas, Bee, Nueces, Refugio, San Patricio3 hr
Apr 30, 8:24 AM CDTSpecial Weather StatementCRPGoliad36 min
Apr 30, 8:50 AM CDTAreal Flood AdvisoryCRPAransas, Calhoun, Refugio3 hr
Apr 30, 3:54 PM CDTSpecial Marine WarningCRP66 min

Nearby

Special Weather Statements in Texas, 2021Every special weather statement in 2021

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.