Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 32, NWS Corpus Christi, TX

May 18, 20214 counties in Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at May 18, 2021, 1:43 AM CDT for 4 counties in Texas. It was in force for 47 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 18, 2021, 1:43 AM CDT (06:43 UTC)
Expired
May 18, 2021, 2:30 AM CDT
In force
47 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
70.0 mph

Counties Duval County, TX, Jim Wells County, TX, Kleberg County, TX, Nueces County, TX

The radar

The Corpus Christi radar (KCRP), 57 km from the middle of the area, began a volume at 06:43 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.

What was reported inside it

TimeReportWhereRemark
May 18, 1:45 AM CDTTSTM WND DMG2 Wsw Alice, TXNUMEROUS AREAS OF DAMAGE INCLUDING POWER POLES DOWN AND DAMAGE TO HOME IN THE RANCHO ALEGRE AREA.
May 18, 1:49 AM CDTTSTM WND DMG1 E Alice, TXNUMEROUS POWER POLES DOWN NEAR 665 IN ALICE. WIND DAMAGE TO ROOFS.
May 18, 1:51 AM CDTTSTM WND GST 676 Nne Lake Alice, TXSEVERE WIND GUSTS FROM 151 AM THROUGH 207 AM. PEAK GUST OF 70 MPH AT 158 AM.
May 18, 2:00 AM CDTTSTM WND DMG1 Se Alice, TXREPORT OF WIND DAMAGED HOME, STORAGE UNIT BEHIND HOME IS GONE, AND DOWNED POWERLINES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.7 hours before the alert went out and 65 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 2021-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2541 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 2021-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 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
2541 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
672 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted.

454 
WUUS54 KCRP 180643
SVRCRP
TXC131-249-273-355-180730-
/O.NEW.KCRP.SV.W.0032.210518T0643Z-210518T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
143 AM CDT Tue May 18 2021

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
  Northeastern Duval County in south central Texas...
  Western Nueces County in south central Texas...
  Jim Wells County in south central Texas...
  Kleberg County in south central Texas...

* Until 230 AM CDT.

* At 143 AM CDT, severe thunderstorms were located along a line
  extending from near Tecalote to Kingsville Naval Air Station to
  Riviera Beach, moving east at 50 mph.

  HAZARD...70 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  Riviera Beach around 150 AM CDT.
  Alfred-South La Paloma around 200 AM CDT.
  Banquete around 210 AM CDT.

Other locations impacted by these severe thunderstorms include Loyola
Beach, Pernitas Point, Agua Dulce, Lake Alice and Petronila.

This includes the following highways...
 US Highway 281 between mile markers 656 and 708.
 US Highway 77 between mile markers 674 and 708.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 2726 9799 2726 9816 2787 9844 2806 9796
      2806 9789 2726 9745 2723 9752 2724 9763
      2728 9765 2726 9773 2728 9776 2727 9781
      2726 9781 2724 9784 2724 9792 2723 9795
      2723 9798
TIME...MOT...LOC 0643Z 267DEG 44KT 2783 9816 2749 9779 2728 9769 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...70MPH
 
$$

LS
1 follow-up statement
407 
WWUS54 KCRP 180706
SVSCRP

Severe Weather Statement
National Weather Service Corpus Christi TX
206 AM CDT Tue May 18 2021

TXC131-180716-
/O.CAN.KCRP.SV.W.0032.000000T0000Z-210518T0730Z/
Duval TX-
206 AM CDT Tue May 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DUVAL COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 2757 9787 2765 9808 2796 9822 2806 9796
      2806 9789 2766 9767
TIME...MOT...LOC 0706Z 235DEG 42KT 2805 9804 2786 9778 2770 9765 

$$

TXC249-273-355-180730-
/O.CON.KCRP.SV.W.0032.000000T0000Z-210518T0730Z/
Nueces TX-Jim Wells TX-Kleberg TX-
206 AM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR WESTERN NUECES...NORTHERN JIM WELLS AND NORTHERN KLEBERG
COUNTIES...

At 206 AM CDT, severe thunderstorms were located along a line
extending from near Midway to near Bluntzer to 6 miles east of
Driscoll, moving northeast at 50 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

These severe storms will be near...
  Sandia around 215 AM CDT.

Other locations impacted by these severe thunderstorms include
Pernitas Point, Agua Dulce and Lake Alice.

This includes the following highways...
 US Highway 281 between mile markers 656 and 678.
 US Highway 77 between mile markers 674 and 682.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 2757 9787 2765 9808 2796 9822 2806 9796
      2806 9789 2766 9767
TIME...MOT...LOC 0706Z 235DEG 42KT 2805 9804 2786 9778 2770 9765 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...70MPH
 
$$

LS

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:28 PM CDTSpecial Weather StatementCRPLa Salle47 min
May 17, 7:42 PM CDTSevere Thunderstorm WarningCRPLa Salle, Webb48 min
May 17, 10:18 PM CDTSpecial Weather StatementCRPLa Salle57 min
May 17, 10:50 PM CDTSpecial Weather StatementCRPWebb40 min
May 17, 11:04 PM CDTAreal Flood AdvisoryCRPWebb3 hr
May 17, 11:35 PM CDTSpecial Weather StatementCRPZapata40 min
May 17, 11:41 PM CDTAreal Flood AdvisoryCRPWebb3 hr
May 17, 11:59 PM CDTSpecial Weather StatementCRPWebb46 min
May 18, 12:11 AM CDTSpecial Weather StatementCRPDuval49 min
May 18, 12:14 AM CDTAreal Flood AdvisoryCRPDuval, La Salle, McMullen, Webb3 hr
May 18, 12:39 AM CDTSevere Thunderstorm WarningCRPDuval, Webb51 min
May 18, 12:57 AM CDTSevere Thunderstorm WarningCRPDuval, Jim Wells, Kleberg48 min
May 18, 1:00 AM CDTSpecial Weather StatementCRPDuval45 min
May 18, 1:51 AM CDTTornado WarningCRPJim Wells, Nueces24 min
May 18, 2:16 AM CDTSevere Thunderstorm WarningCRPBee, Jim Wells, Live Oak, Nueces, San Patricio44 min
May 18, 2:18 AM CDTSpecial Marine WarningCRP27 min
May 18, 2:19 AM CDTSpecial Weather StatementCRPNueces26 min
May 18, 2:31 AM CDTSpecial Weather StatementCRPLive Oak29 min
May 18, 3:01 AM CDTSpecial Weather StatementCRPBee, Live Oak, Refugio, San Patricio29 min
May 18, 3:04 AM CDTSpecial Marine WarningCRP41 min
May 18, 3:20 AM CDTFlash Flood WatchCRPAransas, Bee, Calhoun, Duval, Goliad, Jim Wells and 9 more45 hr
May 18, 3:29 AM CDTSpecial Marine WarningCRP31 min
May 18, 3:35 AM CDTSmall Craft AdvisoryCRP48 hr
May 18, 3:42 AM CDTSpecial Weather StatementCRPBee, Calhoun, Goliad, Refugio33 min
May 18, 5:24 AM CDTSpecial Weather StatementCRPJim Wells36 min
May 18, 12:29 PM CDTRiver Flood WarningCRPLive Oak, McMullen3 hr
May 18, 12:34 PM CDTRiver Flood WarningCRPLive Oak38 hr
May 18, 12:38 PM CDTRiver Flood WarningCRPLive Oak55 hr
May 18, 12:41 PM CDTRiver Flood WarningCRPJim Wells, Nueces, San Patricio9 hr
May 18, 12:51 PM CDTRiver Flood WarningCRPNueces, San Patricio9 hr
May 18, 1:25 PM CDTRiver Flood WarningCRPRefugio50 hr
May 18, 1:41 PM CDTRiver Flood WarningCRPBee55 hr
May 18, 2:11 PM CDTRiver Flood WarningCRPVictoria11 days
May 18, 2:36 PM CDTRiver Flood WarningCRPCalhoun, Refugio, Victoria25 days
May 18, 3:39 PM CDTRiver Flood WarningCRPCalhoun, Goliad, Refugio, Victoria18 hr
May 18, 4:20 PM CDTRiver Flood WarningCRPGoliad, Victoria12 hr
May 18, 5:09 PM CDTRiver Flood WarningCRPNueces4 days
May 18, 5:21 PM CDTSpecial Weather StatementCRPLa Salle24 min
May 18, 5:44 PM CDTSevere Thunderstorm WarningCRPLa Salle46 min
May 18, 6:32 PM CDTSpecial Weather StatementCRPMcMullen43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.