Alert archive / Texas / Tornado Warnings in 2021

Tornado Warning 2, NWS Corpus Christi, TX

May 11, 2021Live Oak County, McMullen County, Texas

NWS Corpus Christi, TX issued this tornado warning at May 11, 2021, 5:20 PM CDT for Live Oak County, McMullen County, Texas. It was in force for 40 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, 5:20 PM CDT (22:20 UTC)
Expired: May 11, 2021, 6:00 PM CDT
In force: 40 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Live Oak County, TX, McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 114 km from the middle of the area, began a volume at 22:22 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, 10.3 hours before the alert went out and 132 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.

956 
WFUS54 KCRP 112220
TORCRP
TXC297-311-112300-
/O.NEW.KCRP.TO.W.0002.210511T2220Z-210511T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Corpus Christi TX
520 PM CDT Tue May 11 2021

The National Weather Service in Corpus Christi has issued a

* Tornado Warning for...
  Eastern McMullen County in south central Texas...
  West central Live Oak County in south central Texas...

* Until 600 PM CDT.
    
* At 519 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Tilden, moving southeast at 20 mph.

  HAZARD...Tornado and golf ball size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  eastern McMullen and west central Live Oak Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Corpus Christi.

&&

LAT...LON 2837 9869 2852 9857 2833 9816 2810 9834
TIME...MOT...LOC 2219Z 304DEG 19KT 2841 9856 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

JCP

1 follow-up statement

932 
WWUS54 KCRP 112242
SVSCRP

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

TXC297-311-112300-
/O.CON.KCRP.TO.W.0002.000000T0000Z-210511T2300Z/
McMullen TX-Live Oak TX-
542 PM CDT Tue May 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN MCMULLEN AND WEST CENTRAL LIVE OAK COUNTIES...
    
At 541 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles southeast of Tilden, moving southeast at 20 mph.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
southeastern McMullen and west central Live Oak Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 2832 9859 2841 9847 2831 9827 2818 9844
      2822 9850
TIME...MOT...LOC 2241Z 314DEG 17KT 2833 9848 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

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, 5:03 PM CDT	Severe Thunderstorm Warning	CRP	McMullen	42 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

Tornado Warnings in Texas, 2021 Every tornado warning in 2021 Tornadoes 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.