Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Corpus Christi, TX

April 23, 2021Refugio County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 23, 2021, 9:31 PM CDT for Refugio County, Texas. It was in force for 29 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 23, 2021, 9:31 PM CDT (02:31 UTC)
Expired
Apr 23, 2021, 10:00 PM CDT
In force
29 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Refugio County, TX

The radar

The Corpus Christi radar (KCRP), 85 km from the middle of the area, began a volume at 02:31 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, 2.5 hours before the alert went out and 80 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 2021-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1602 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 00:00Z on 2021-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1602 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
883 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

154 
WUUS54 KCRP 240231
SVRCRP
TXC391-240300-
/O.NEW.KCRP.SV.W.0005.210424T0231Z-210424T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
931 PM CDT Fri Apr 23 2021

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
  Northeastern Refugio County in south central Texas...

* Until 1000 PM CDT.

* At 931 PM CDT, a severe thunderstorm was located over Quintana, or
  9 miles northeast of Refugio, moving east at 45 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...
  Quintana, Tivoli and Austwell. 

This includes US Highway 77 between mile markers 608 and 618.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 2832 9682 2830 9694 2826 9691 2821 9694
      2822 9697 2827 9692 2829 9694 2826 9694
      2830 9695 2827 9711 2833 9726 2846 9722
      2846 9684 2843 9681 2845 9679 2846 9680
      2846 9678 2845 9678
TIME...MOT...LOC 0231Z 286DEG 39KT 2839 9715 

HAIL...1.00IN
WIND...60MPH
 
$$

87

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 7:33 PM CDTSevere Thunderstorm WarningCRPBee, Live Oak, McMullen27 min
Apr 23, 8:00 PM CDTSevere Thunderstorm WarningCRPBee, Live Oak30 min
Apr 23, 8:28 PM CDTSevere Thunderstorm WarningCRPBee, Goliad32 min
Apr 23, 8:59 PM CDTSevere Thunderstorm WarningCRPBee, Goliad, Refugio31 min
Apr 23, 9:41 PM CDTSpecial Weather StatementCRPVictoria34 min
Apr 23, 9:49 PM CDTSpecial Marine WarningCRP73 min
Apr 24, 1:52 AM CDTMarine Dense Fog AdvisoryCRP8 hr
Apr 24, 5:07 AM CDTDense Fog AdvisoryCRPAransas, Bee, Calhoun, Goliad, Jim Wells, Kleberg and 4 more5 hr

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.