Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Corpus Christi, TX

May 11, 2021McMullen County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at May 11, 2021, 5:03 PM CDT for McMullen County, Texas. It was in force for 42 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: May 11, 2021, 5:03 PM CDT (22:03 UTC)
Expired: May 11, 2021, 5:45 PM CDT
In force: 42 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

County McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 120 km from the middle of the area, began a volume at 22:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 11, 3:41 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.1 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1953 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 825 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -52 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -2.5

Open this sounding in Storm Lab

The text

As transmitted.

880 
WUUS54 KCRP 112203
SVRCRP
TXC311-112245-
/O.NEW.KCRP.SV.W.0008.210511T2203Z-210511T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
503 PM CDT Tue May 11 2021

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
  Central McMullen County in south central Texas...

* Until 545 PM CDT.

* At 503 PM CDT, a severe thunderstorm was located 7 miles west of
  Tilden, moving southeast at 20 mph.

  HAZARD...Golf ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect 
           damage to roofs, siding, windows, and vehicles.

* This severe thunderstorm will be near...
  Tilden around 520 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 2846 9833 2842 9833 2820 9850 2846 9878
      2860 9868
TIME...MOT...LOC 2203Z 304DEG 19KT 2849 9867 

HAIL...1.75IN
WIND...<50MPH
 
$$

JCP

1 follow-up statement

029 
WWUS54 KCRP 112214
SVSCRP

Severe Weather Statement
National Weather Service Corpus Christi TX
514 PM CDT Tue May 11 2021

TXC311-112245-
/O.CON.KCRP.SV.W.0008.000000T0000Z-210511T2245Z/
McMullen TX-
514 PM CDT Tue May 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR CENTRAL MCMULLEN COUNTY...

At 513 PM CDT, a severe thunderstorm was located near Tilden, moving
southeast at 20 mph.

HAZARD...Two inch hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

This severe storm will be near...
  Tilden around 525 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 2846 9833 2842 9833 2820 9850 2846 9878
      2860 9868
TIME...MOT...LOC 2213Z 304DEG 19KT 2846 9862 

TORNADO...POSSIBLE
HAIL...2.00IN
WIND...<50MPH
 
$$

JCP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 8:58 PM CDT	Special Weather Statement	CRP	La Salle	32 min
May 10, 9:35 PM CDT	Special Weather Statement	CRP	La Salle	40 min
May 10, 10:15 PM CDT	Special Weather Statement	CRP	McMullen	45 min
May 11, 12:35 AM CDT	Special Weather Statement	CRP	San Patricio	40 min
May 11, 1:09 AM CDT	Special Weather Statement	CRP	San Patricio	51 min
May 11, 1:34 AM CDT	Areal Flood Advisory	CRP	Bee, Refugio, San Patricio	3 hr
May 11, 1:43 AM CDT	Special Weather Statement	CRP	San Patricio	47 min
May 11, 2:03 AM CDT	Special Weather Statement	CRP	San Patricio	42 min
May 11, 2:45 AM CDT	Special Weather Statement	CRP	San Patricio	45 min
May 11, 3:09 PM CDT	Special Weather Statement	CRP	La Salle	36 min
May 11, 3:46 PM CDT	Special Weather Statement	CRP	La Salle	29 min
May 11, 4:23 PM CDT	Severe Thunderstorm Warning	CRP	La Salle, McMullen	52 min
May 11, 4:38 PM CDT	Areal Flood Advisory	CRP	La Salle, McMullen	3 hr
May 11, 5:20 PM CDT	Tornado Warning	CRP	Live Oak, McMullen	40 min
May 11, 5:38 PM CDT	Severe Thunderstorm Warning	CRP	Live Oak, McMullen	52 min
May 11, 6:18 PM CDT	Tornado Warning	CRP	Duval, Live Oak, McMullen	42 min
May 11, 6:21 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Live Oak, McMullen	39 min
May 11, 6:29 PM CDT	Special Weather Statement	CRP	La Salle	31 min
May 11, 6:35 PM CDT	Severe Thunderstorm Warning	CRP	La Salle, McMullen, Webb	40 min
May 11, 6:48 PM CDT	Areal Flood Advisory	CRP	Duval, La Salle, McMullen, Webb	3 hr
May 11, 6:52 PM CDT	Severe Thunderstorm Warning	CRP	Duval, McMullen	38 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every 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.