Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Corpus Christi, TX

February 11, 2021Dimmit County, Texas

NWS Corpus Christi, TX issued this special weather statement at Feb 11, 2021, 4:24 AM CST for Dimmit County, Texas. It was in force for 36 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
Feb 11, 2021, 4:24 AM CST (10:24 UTC)
Expired
Feb 11, 2021, 5:00 AM CST
In force
36 min
Issued by
NWS Corpus Christi, TX

County Dimmit County, TX

The radar

The Laughlin AFB radar (KDFX), 136 km from the middle of the area, began a volume at 10:27 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, 10.4 hours before the alert went out and 169 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 2021-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 871 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 2021-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
871 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
998 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.2
Supercell composite
0.9

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 Corpus Christi, TX wrote its last area forecast discussion before this special weather statement went out at Feb 11, 4:05 AM CST, 19 minutes earlier.

Area forecast discussion, Feb 11, 4:05 AM CST, 19 minutes before
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Hazardous weather outlook, Feb 10, 5:53 AM CST, 22 hours 31 minutes before
Hazardous Weather Outlook
National Weather Service Corpus Christi TX
553 AM CST Wed Feb 10 2021

TXZ229>234-239>247-342>347-442-443-447-111200-
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-
553 AM CST Wed Feb 10 2021

This hazardous weather outlook is for South Texas.

.DAY ONE...Today and Tonight

A Dense Fog Advisory remains in effect for portions of the
coastal counties though 9 AM today. Visibilities of 1-3 miles
will be possible across the Coastal Plains and Victoria Crossroads
region through the morning. Fog may redevelop tonight over
portions of the Coastal Bend.

Isolated thunderstorms will be possible today and tonight across
South Texas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Isolated thunderstorms are possible Thursday and Thursday night.

Freezing temperatures are possible nightly Saturday night through
Tuesday night for most locations excluding the islands. A Freeze
Warning may be necessary.

Wind Chill Advisory conditions are possible during the mentioned
time frame of freezing temperatures.

Sleet and light freezing rain are possible late Sunday night into
early Monday morning for the Coastal Plains.

GMZ230-235-250-255-270-275-111200-
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-
553 AM CST Wed Feb 10 2021

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

.DAY ONE...Today and Tonight

A Marine Dense Fog Advisory remains in effect until 9 AM
today for the bays and nearshore waters. The fog may redevelop
later this evening.

Isolated thunderstorms will be possible this afternoon and
tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Isolated thunderstorms are possible Thursday.

Small Craft Advisory conditions are expected Thursday night through
early next week.

ANM/LS

In the hours before

Special weather statement, Feb 11, 12:16 AM CST, 4 hours 8 minutes before
Special Weather Statement
National Weather Service Corpus Christi TX
1216 AM CST Thu Feb 11 2021

TXZ229>234-239>247-342>347-442-443-447-111200-
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-
Including the cities of Cotulla, Calliham, Cross, Loma Alta,
Tilden, George West, Three Rivers, Beeville, Goliad, Victoria,
Aguilares, Columbia Bridge, Laredo, Orvil, Freer, Benavides,
San Diego, Alice, Orange Grove, Kingsville, Loyola Beach,
Ricardo, Riviera, Robstown, Tuloso, Bishop, Sinton, Mathis, Taft,
Odem, Rockport, Fulton, Refugio, McFaddin, Woodsboro, Kamay,
Corpus Christi, Flour Bluff, Portland, Ingleside, Bayside,
Austwell, Magnolia Beach, and Port Lavaca
1216 AM CST Thu Feb 11 2021

...PATCHY TO AREAS OF FOG EARLY THIS MORNING...

Patchy to areas of fog have develop across portions of South
Texas early this morning. Expect visibilities generally 1 to 3
miles, with a few locations seeing visibilities 1/4 mile or less
at times.

Use caution if traveling as visibility may change rapidly
in a short amount of time. Use low beam headlights and leave
extra distance between your vehicle and others on the road.

ANM
Special weather statement, Feb 11, 4:24 AM CST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 3:23 AM CSTSmall Craft AdvisoryCRP67 hr
Feb 11, 6:00 AM CSTSpecial Weather StatementCRPLa Salle30 min
Feb 11, 6:05 AM CSTSpecial Weather StatementCRPWebb25 min
Feb 11, 6:29 AM CSTSpecial Weather StatementCRPMcMullen31 min
Feb 11, 6:31 AM CSTSpecial Weather StatementCRPWebb14 min
Feb 11, 8:25 AM CSTSpecial Weather StatementCRPLa Salle50 min
Feb 11, 1:58 PM CSTSpecial Weather StatementCRPVictoria32 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.