Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Corpus Christi, TX

July 22, 2021La Salle County, Texas

NWS Corpus Christi, TX issued this special weather statement at Jul 22, 2021, 4:38 PM CDT for La Salle County, Texas. It was in force for 37 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
Jul 22, 2021, 4:38 PM CDT (21:38 UTC)
Expired
Jul 22, 2021, 5:15 PM CDT
In force
37 min
Issued by
NWS Corpus Christi, TX

County La Salle County, TX

The radar

The Laughlin AFB radar (KDFX), 151 km from the middle of the area, began a volume at 21:40 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 12:00Z, 9.6 hours before the alert went out and 197 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 12:00Z on 2021-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 678 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 12:00Z on 2021-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.19395878Sfc1 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
678 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 22, 3:42 PM CDT, 56 minutes earlier.

Area forecast discussion, Jul 22, 3:42 PM CDT, 56 minutes before
Area Forecast Discussion
National Weather Service Corpus Christi TX
342 PM CDT Thu Jul 22 2021

.SHORT TERM (Tonight through Friday Night)...

Showers and thunderstorms will continue to push northward through
the area this afternoon. Some of these storms could become strong or
severe with gusty winds and small hail possible. Coverage and
intensity of storms should diminish in the evening hours with loss
of daytime heating and with the mid-upper level low continuing to
move W-NW out of South TX. Conditions should remain dry through the
rest of the period as high pressure settles in. Cloud cover will
decrease tonight into tomorrow as subsident air takes over. Lows
tonight and tomorrow night will drop into the 70s to near 80 along
the immediate coast. Expect temperatures tomorrow to warm into the
90s with areas further west reaching to near 100 degrees. Heat
indices will be in the 105-109 range tomorrow for most of South
Texas, though a few locations in the Coastal Plains could reach
values of 110.

&&

.LONG TERM (Saturday through Thursday)...

The long term remains rather quiet as upper level ridging nudges
in from the east. Much drier air will work into the region with
PWATs falling to near 1.3" over the weekend. The combination of dry
air and subsidence aloft should keep us dry through the weekend and
into early next week. Rain chances begin to trend up by the middle
of next week as ridging starts to break down while a TUTT
meanders along the Texas/Mexico border. With that said, the greatest
forcing looks to remain to our south but this renewed moisture and
potential boundary interaction will lead to a slight chance of
showers and storms, mainly Wednesday and Thursday.

Until our next shot at rain arrives, the main story over the weekend
will be the heat. We will see daily heat indices from 105-109 with a
few locations touching 110. It's possible we see a couple Heat
Advisories across the Coastal Plains as we head into next week.

.MARINE...

Moderate south-southeasterly flow is expected tonight through
Friday. Scattered showers and thunderstorms will continue through
the rest of today and will taper off this evening as a mid to
upper level low moves west through the state. There is a slight
chance of showers and thunderstorms early Friday morning. Dry
conditions will take over beginning Friday afternoon. Weak to
moderate onshore flow will continue as we head into the weekend
and early next week. High pressure aloft will keep dry conditions
intact through the middle of next week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Corpus Christi    78  94  79  93  77  /  10  10   0   0   0
Victoria          77  93  76  93  75  /  10  10   0   0   0
Laredo            77 101  77 103  75  /  20   0   0   0   0
Alice             77  98  75  99  74  /  10   0   0   0   0
Rockport          83  92  82  92  81  /  10  10   0   0   0
Cotulla           77 100  76 102  75  /  30   0   0   0   0
Kingsville        78  96  76  97  76  /  10   0   0   0   0
Navy Corpus       83  92  82  91  81  /  10  10   0   0   0

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.

&&

HAA/72...SHORT TERM
TC/95...LONG TERM
Hazardous weather outlook, Jul 22, 3:40 AM CDT, 12 hours 58 minutes before
Hazardous Weather Outlook
National Weather Service Corpus Christi TX
340 AM CDT Thu Jul 22 2021

TXZ229>234-239>247-342>347-442-443-447-230845-
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-
340 AM CDT Thu Jul 22 2021

This hazardous weather outlook is for South Texas.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected today and early evening.

Heat indices 105 to 109 are possible, especially across the
Coastal Plains.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Heat Advisory conditions are possible daily beginning Friday. Heat
indices may exceed 109, especially over the inland Coastal Plains
and westward. Heat indices of 105 to 109 are possible elsewhere
daily.

GMZ230-235-250-255-270-275-230845-
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-
340 AM CDT Thu Jul 22 2021

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

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected today.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Isolated thunderstorms are possible Friday morning.

In the hours before

Special weather statement, Jul 22, 3:54 PM CDT, 44 minutes before
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Special weather statement, Jul 22, 3:57 PM CDT, 41 minutes before
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Special weather statement, Jul 22, 4:02 PM CDT, 36 minutes before
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Special weather statement, Jul 22, 4:26 PM CDT, 12 minutes before
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Special weather statement, Jul 22, 4:31 PM CDT, 7 minutes before
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Special weather statement, Jul 22, 4:38 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 2:01 PM CDTSpecial Weather StatementCRPKleberg44 min
Jul 22, 2:05 PM CDTSpecial Weather StatementCRPBee40 min
Jul 22, 2:33 PM CDTSpecial Weather StatementCRPBee42 min
Jul 22, 2:38 PM CDTSpecial Marine WarningCRP52 min
Jul 22, 2:41 PM CDTSpecial Weather StatementCRPJim Wells49 min
Jul 22, 2:43 PM CDTSpecial Weather StatementCRPBee47 min
Jul 22, 2:56 PM CDTSpecial Weather StatementCRPKleberg, Nueces49 min
Jul 22, 3:01 PM CDTSpecial Weather StatementCRPJim Wells44 min
Jul 22, 3:06 PM CDTSevere Thunderstorm WarningCRPBee, Goliad, Live Oak, San Patricio39 min
Jul 22, 3:22 PM CDTSpecial Weather StatementCRPDuval23 min
Jul 22, 3:42 PM CDTSevere Thunderstorm WarningCRPBee, Goliad48 min
Jul 22, 3:51 PM CDTSpecial Weather StatementCRPBee24 min
Jul 22, 3:54 PM CDTSpecial Weather StatementCRPWebb51 min
Jul 22, 3:57 PM CDTSpecial Weather StatementCRPMcMullen33 min
Jul 22, 4:02 PM CDTSpecial Weather StatementCRPLive Oak28 min
Jul 22, 4:26 PM CDTSpecial Weather StatementCRPGoliad34 min
Jul 22, 4:31 PM CDTSpecial Weather StatementCRPLa Salle29 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.