Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 52, NWS Brownsville, TX

May 8, 2012Zapata County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 8, 2012, 12:29 PM CDT for Zapata County, Texas. It was in force for 46 min. 2 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 8, 2012, 12:29 PM CDT (17:29 UTC)
Expired: May 8, 2012, 1:15 PM CDT
In force: 46 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

County Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 199 km from the middle of the area, began a volume at 17:31 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.

What was reported inside it

Time	Report	Where	Remark
May 8, 12:35 PM CDT	TSTM WND GST 62	Zapata, TX
May 8, 1:03 PM CDT	TSTM WND DMG	Zapata, TX	SEVERAL TREES DOWN AROUND 4 INCHES IN DIAMETER AT 4TH AND FLORES STREETS IN ZAPATA.

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

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 8, 10:58 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 5.5 hours before the alert went out and 211 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: 2526 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: -3 m²/s²
Significant tornado parameter: -1.1
Supercell composite: -5.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

293 
WUUS54 KBRO 081729
SVRBRO
TXC505-081815-
/O.NEW.KBRO.SV.W.0052.120508T1729Z-120508T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1229 PM CDT TUE MAY 8 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ZAPATA COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 115 PM CDT

* AT 1228 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL...9
  MILES NORTH OF ZAPATA...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAS PALMAS.
  SIESTA SHORES.
  BUSTAMANTE.
  MORALES-SANCHEZ.
  ESCOBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

QUARTER SIZE HAIL IS LIKELY. MOVE INDOORS IMMEDIATELY.

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&

LAT...LON 2712 9938 2722 9896 2679 9895 2667 9903
      2657 9917 2667 9921 2672 9921 2675 9925
      2679 9925 2684 9927 2686 9929 2686 9932
      2688 9933 2691 9933 2693 9938 2695 9940
TIME...MOT...LOC 1728Z 278DEG 27KT 2701 9927

$$
67/53

2 follow-up statements

398 
WWUS54 KBRO 081748
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1248 PM CDT TUE MAY 8 2012

TXC505-081815-
/O.CON.KBRO.SV.W.0052.000000T0000Z-120508T1815Z/
ZAPATA-
1248 PM CDT TUE MAY 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR SOUTHERN ZAPATA COUNTY...

AT 1247 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM OVER BUSTAMANTE...MOVING EAST AT 45 MPH.
WIND GUSTS OF 62 MPH WERE RECENTLY REPORTED IN ZAPATA. 

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BUSTAMANTE.
  ESCOBA.
  NEW FALCON.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...
  QUARTER SIZE HAIL.
  DAMAGING WIND GUSTS OF 60 TO 70 MILES AN HOUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM.

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&


LAT...LON 2714 9928 2713 9896 2679 9895 2667 9903
      2657 9917 2667 9921 2672 9921 2675 9925
      2677 9924 2684 9927 2686 9929 2686 9932
      2691 9933 2693 9938 2695 9940
TIME...MOT...LOC 1747Z 284DEG 39KT 2698 9908

$$

67

103 
WWUS54 KBRO 081807
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
107 PM CDT TUE MAY 8 2012

TXC505-081815-
/O.CON.KBRO.SV.W.0052.000000T0000Z-120508T1815Z/
ZAPATA-
107 PM CDT TUE MAY 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR ZAPATA COUNTY...

AT 100 PM CDT...THE PUBLIC REPORTED FOUR INCH DIAMETER TREES BLOWN 
DOWN IN THE TOWN OF ZAPATA NEAR THE INTERSECTION OF FOURTH AND 
FLORES.

AT 105 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM 3 MILES SOUTHEAST OF BUSTAMANTE...MOVING
EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BUSTAMANTE.
  ESCOBA.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM.

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&


LAT...LON 2714 9928 2713 9896 2679 9895 2667 9903
      2657 9917 2667 9921 2672 9921 2675 9925
      2677 9924 2684 9927 2686 9929 2686 9932
      2691 9933 2693 9938 2695 9940
TIME...MOT...LOC 1805Z 278DEG 19KT 2697 9906

$$

60

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 11:51 AM CDT	Severe Thunderstorm Warning	BRO	Zapata	39 min
May 8, 1:09 PM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg, Starr, Zapata	36 min
May 8, 2:08 PM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg, Starr	52 min
May 8, 2:56 PM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg, Zapata	49 min
May 8, 3:48 PM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg, Starr, Zapata	42 min
May 8, 3:51 PM CDT	Areal Flood Advisory	BRO	Jim Hogg, Starr, Zapata	114 min
May 8, 3:52 PM CDT	Tornado Warning	BRO	Brooks, Jim Hogg, Starr	23 min
May 8, 4:19 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo, Jim Hogg, Kenedy, Starr	41 min
May 8, 4:25 PM CDT	Tornado Warning	BRO	Brooks, Hidalgo, Jim Hogg, Starr	35 min
May 8, 4:33 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Starr	27 min
May 8, 4:35 PM CDT	Areal Flood Advisory	BRO	Brooks, Jim Hogg, Starr	115 min
May 8, 5:00 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo, Kenedy, Willacy	45 min
May 8, 5:04 PM CDT	Areal Flood Advisory	BRO	Brooks, Hidalgo, Jim Hogg, Kenedy, Starr	116 min
May 8, 5:36 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Kenedy, Willacy	39 min
May 8, 5:41 PM CDT	Special Marine Warning	BRO		2 hr
May 8, 5:46 PM CDT	Areal Flood Advisory	BRO	Brooks, Hidalgo, Kenedy, Starr, Willacy	98 min
May 8, 6:16 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Kenedy, Willacy	44 min
May 8, 6:20 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Kenedy, Willacy	70 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

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.