Alert archive / Texas / Tornado Warnings in 2021

Tornado Warning 4, NWS Corpus Christi, TX

May 11, 2021Duval County, McMullen County, Texas

NWS Corpus Christi, TX issued this tornado warning at May 11, 2021, 7:00 PM CDT for Duval County, McMullen County, Texas. It was in force for 45 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, 7:00 PM CDT (00:00 UTC)
Expired: May 11, 2021, 7:45 PM CDT
In force: 45 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Duval County, TX, McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 102 km from the middle of the area, began a volume at 00:00 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 00:00Z, 0.0 hours before the alert went out and 120 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: 2320 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 854 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

As transmitted.

599 
WFUS54 KCRP 120000
TORCRP
TXC131-311-120045-
/O.NEW.KCRP.TO.W.0004.210512T0000Z-210512T0045Z/

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

The National Weather Service in Corpus Christi has issued a

* Tornado Warning for...
  Northeastern Duval County in south central Texas...
  Southeastern McMullen County in south central Texas...

* Until 745 PM CDT.
    
* At 659 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Loma Alta, or 18 miles northeast of Freer, moving
  south at 15 mph.

  HAZARD...Tornado and quarter 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 dangerous storm will be near...
  Seven Sisters around 725 PM CDT.

This includes US Highway 59 between mile markers 748 and 768.
 
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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 2819 9857 2819 9838 2783 9834 2784 9865
TIME...MOT...LOC 2359Z 001DEG 15KT 2812 9849 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JCP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:05 PM CDT	Special Weather Statement	CRP	Webb	40 min
May 11, 7:15 PM CDT	Severe Thunderstorm Warning	CRP	La Salle, Webb	45 min
May 11, 7:19 PM CDT	Areal Flood Advisory	CRP	Duval, Live Oak, McMullen	3 hr
May 11, 7:26 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Live Oak, McMullen	49 min
May 11, 7:38 PM CDT	Severe Thunderstorm Warning	CRP	Webb	52 min
May 11, 8:09 PM CDT	Areal Flood Advisory	CRP	La Salle, McMullen	3 hr
May 11, 8:09 PM CDT	Tornado Warning	CRP	Duval, Jim Wells, Live Oak	51 min
May 11, 8:19 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Live Oak	41 min
May 11, 8:32 PM CDT	Tornado Warning	CRP	Duval	28 min
May 11, 8:47 PM CDT	Special Weather Statement	CRP	Webb	43 min
May 11, 8:52 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Live Oak, Nueces, San Patricio	38 min
May 11, 9:01 PM CDT	Special Weather Statement	CRP	Duval	44 min
May 11, 9:15 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Webb	45 min
May 11, 9:21 PM CDT	Severe Thunderstorm Warning	CRP	Duval	39 min
May 11, 9:28 PM CDT	Special Weather Statement	CRP	Jim Wells	47 min
May 11, 9:38 PM CDT	Severe Thunderstorm Warning	CRP	Jim Wells, Kleberg, Nueces	52 min
May 11, 9:43 PM CDT	Areal Flood Advisory	CRP	Duval, Jim Wells, Live Oak, McMullen, San Patricio	3 hr
May 11, 9:50 PM CDT	Severe Thunderstorm Warning	CRP	Duval	40 min
May 11, 10:13 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg	32 min
May 11, 10:14 PM CDT	Areal Flood Advisory	CRP	Duval, Jim Wells, Kleberg, Nueces	3 hr
May 11, 10:26 PM CDT	Tornado Warning	CRP	Jim Wells, Kleberg	34 min
May 11, 10:31 PM CDT	Special Weather Statement	CRP	Kleberg, Nueces, San Patricio	44 min
May 11, 10:45 PM CDT	Severe Thunderstorm Warning	CRP	Jim Wells, Kleberg	45 min
May 11, 10:53 PM CDT	Special Marine Warning	CRP		2 hr
May 11, 10:55 PM CDT	Areal Flood Advisory	CRP	Bee, Jim Wells, Live Oak, San Patricio	110 min
May 11, 11:06 PM CDT	Special Weather Statement	CRP	San Patricio	39 min
May 11, 11:15 PM CDT	Special Weather Statement	CRP	Kleberg	45 min
May 11, 11:25 PM CDT	Special Marine Warning	CRP		95 min
May 11, 11:32 PM CDT	Severe Thunderstorm Warning	CRP	Nueces, San Patricio	28 min
May 11, 11:56 PM CDT	Severe Thunderstorm Warning	CRP	Nueces, San Patricio	49 min
May 12, 12:08 AM CDT	Areal Flood Advisory	CRP	Duval, Jim Wells, Kleberg, Nueces	3 hr
May 12, 12:14 AM CDT	Special Weather Statement	CRP	Nueces	31 min
May 12, 12:21 AM CDT	Areal Flood Advisory	CRP	Kleberg, Nueces, San Patricio	3 hr
May 12, 12:57 AM CDT	Special Marine Warning	CRP		93 min
May 12, 12:59 AM CDT	Special Weather Statement	CRP	Nueces	46 min
May 12, 1:00 AM CDT	Special Marine Warning	CRP		60 min
May 12, 1:06 AM CDT	High Wind Warning	CRP	Nueces	114 min
May 12, 1:29 AM CDT	Special Weather Statement	CRP	Nueces	31 min
May 12, 1:48 AM CDT	Special Marine Warning	CRP		117 min
May 12, 10:38 AM CDT	Small Craft Advisory	CRP		6 hr

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.