Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 55, NWS Corpus Christi, TX

September 28, 2021Nueces County, San Patricio County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Sep 28, 2021, 6:37 PM CDT for Nueces County, San Patricio County, Texas. It was in force for 38 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
Sep 28, 2021, 6:37 PM CDT (23:37 UTC)
Expired
Sep 28, 2021, 7:15 PM CDT
In force
38 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Nueces County, TX, San Patricio County, TX

The radar

The Corpus Christi radar (KCRP), 16 km from the middle of the area, began a volume at 23:37 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, 11.6 hours before the alert went out and 32 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 2021-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2206 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2021-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 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
2206 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
837 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
-28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

101 
WUUS54 KCRP 282337
SVRCRP
TXC355-409-290015-
/O.NEW.KCRP.SV.W.0055.210928T2337Z-210929T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
637 PM CDT Tue Sep 28 2021

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
  Northwestern Nueces County in south central Texas...
  Southwestern San Patricio County in south central Texas...

* Until 715 PM CDT.

* At 637 PM CDT, a severe thunderstorm was located over Calallen, or
  near Robstown, and is nearly stationary.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Corpus Christi, Robstown, Sinton, Odem, San Patricio, Edroy,
  Annaville, Calallen and Tuloso.

This includes the following highways...
 Interstate 37 between mile markers 7 and 25.
 US Highway 181 near mile marker 620.
 US Highway 77 between mile markers 646 and 658.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2797 9781 2806 9751 2786 9746 2783 9749
      2780 9753 2778 9763
TIME...MOT...LOC 2337Z 167DEG 1KT 2787 9760 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ADAMS
2 follow-up statements
215 
WWUS54 KCRP 282359
SVSCRP

Severe Weather Statement
National Weather Service Corpus Christi TX
659 PM CDT Tue Sep 28 2021

TXC355-409-290015-
/O.CON.KCRP.SV.W.0055.000000T0000Z-210929T0015Z/
Nueces TX-San Patricio TX-
659 PM CDT Tue Sep 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHEASTERN NUECES AND SOUTH CENTRAL SAN PATRICIO COUNTIES...

At 659 PM CDT, a severe thunderstorm was located near Odem, or 8
miles southwest of Taft, moving east at 5 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Corpus Christi, Sinton, Odem, Annaville, Edroy and Tuloso. 

This includes the following highways...
 Interstate 37 between mile markers 7 and 22.
 US Highway 77 between mile markers 646 and 658.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2785 9762 2797 9767 2806 9751 2786 9746
      2783 9749 2780 9753 2780 9755
TIME...MOT...LOC 2359Z 264DEG 5KT 2792 9750 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ADAMS
218 
WWUS54 KCRP 290019
SVSCRP

Severe Weather Statement
National Weather Service Corpus Christi TX
719 PM CDT Tue Sep 28 2021

TXC355-409-290029-
/O.EXP.KCRP.SV.W.0055.000000T0000Z-210929T0015Z/
Nueces TX-San Patricio TX-
719 PM CDT Tue Sep 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NUECES AND SOUTH
CENTRAL SAN PATRICIO COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.  However small hail and gusty winds are still
possible with this thunderstorm.

LAT...LON 2785 9762 2797 9767 2806 9751 2786 9746
      2783 9749 2780 9753 2780 9755
TIME...MOT...LOC 0019Z 167DEG 1KT 2792 9750 

$$

ADAMS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 4:37 PM CDTSpecial Weather StatementCRPSan Patricio38 min
Sep 28, 6:03 PM CDTSpecial Weather StatementCRPSan Patricio27 min
Sep 28, 6:33 PM CDTSpecial Weather StatementCRPSan Patricio27 min
Sep 28, 6:46 PM CDTSpecial Marine WarningCRP48 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning 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.