Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 10, NWS Brownsville, TX

April 20, 2012Willacy County, Texas

NWS Brownsville, TX issued this tornado warning at Apr 20, 2012, 5:27 PM CDT for Willacy County, Texas. It was in force for 14 min. 3 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
Apr 20, 2012, 5:27 PM CDT (22:27 UTC)
Expired
Apr 20, 2012, 5:41 PM CDT
In force
14 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

County Willacy County, TX

The radar

The Brownsville radar (KBRO), 70 km from the middle of the area, began a volume at 22:29 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
Apr 20, 5:45 PM CDTFUNNEL CLOUDRaymondville, TXFUNNEL CLOUD REPORTED IN RAYMONDVILLE.
Apr 20, 5:45 PM CDTTORNADO1 Se Raymondville, TXBRIEF TOUCHDOWN AND LIFT UP. NO DAMAGE REPORTED.
Apr 20, 5:51 PM CDTHAIL 0.75S Raymondville, TXPENNY SIZED HAIL REPORTED SOUTH OF RAYMONDVILLE.

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.

IssuedProductOfficeLasted
Apr 20, 2:29 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 10.5 hours before the alert went out and 73 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, Brownsville Intl, TX at 12:00Z on 2012-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1336 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 12:00Z on 2012-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.19395878Sfc1 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
1336 J/kg
Mixed-layer CIN
-192 J/kg
Mixed-layer LCL
742 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

573 
WFUS54 KBRO 202227
TORBRO
TXC489-202300-
/O.NEW.KBRO.TO.W.0010.120420T2227Z-120420T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
527 PM CDT FRI APR 20 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL WILLACY COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 600 PM CDT

* AT 527 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE   
TRACKING A TORNADO ON RADAR 6 MILES NORTH OF RAYMONDVILLE...MOVING 
SOUTHEAST   AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  YTURRIA BY 525 PM CDT.
  RAYMONDVILLE BY 530 PM CDT.
  WILLAMAR BY 550 PM CDT.
  PORFIRIO BY 555 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2635 9762 2654 9788 2660 9783 2660 9778
      2654 9744
TIME...MOT...LOC 2227Z 307DEG 29KT 2655 9778

$$

JGG
2 follow-up statements
104 
WWUS54 KBRO 202234
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
534 PM CDT FRI APR 20 2012

TXC489-202300-
/O.CON.KBRO.TO.W.0010.000000T0000Z-120420T2300Z/
WILLACY-
534 PM CDT FRI APR 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR CENTRAL
WILLACY COUNTY...

AT 534 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
TRACK A TORNADO ON RADAR 3 MILES NORTH OF RAYMONDVILLE...MOVING 
SOUTH AT 35 MPH.

THE TORNADO WILL BE NEAR...
  RAYMONDVILLE BY 535 PM CDT.
  WILLAMAR BY 545 PM CDT.
  LOS COYOTES BY 550 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2635 9762 2654 9788 2660 9783 2660 9778
      2655 9750
TIME...MOT...LOC 2234Z 341DEG 29KT 2649 9776

$$

JGG
774 
WWUS54 KBRO 202241
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
541 PM CDT FRI APR 20 2012

TXC489-202251-
/O.CAN.KBRO.TO.W.0010.000000T0000Z-120420T2300Z/
WILLACY-
541 PM CDT FRI APR 20 2012

...THE TORNADO WARNING FOR CENTRAL WILLACY COUNTY IS CANCELLED...

THE CIRCULATION HAS WEAKNED. THIS STORM HOWEVER IS STILL CAPABLE OF 
DESTRUCTIVE HAIL AND DAMAGING WINDS AND A SEVERE THUNDERSTORM 
WARNING HAS BEEN ISSUED.

LAT...LON 2635 9762 2654 9788 2660 9783 2660 9778
      2655 9750
TIME...MOT...LOC 2241Z 341DEG 29KT 2644 9774

$$

JGG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 3:54 AM CDTSmall Craft AdvisoryBRO42 hr
Apr 20, 3:54 AM CDTSmall Craft Advisory for WindsBRO30 hr
Apr 20, 3:09 PM CDTSevere Thunderstorm WarningBROBrooks, Jim Hogg51 min
Apr 20, 3:57 PM CDTSevere Thunderstorm WarningBROBrooks, Jim Hogg, Starr48 min
Apr 20, 4:12 PM CDTTornado WarningBROJim Hogg10 min
Apr 20, 4:14 PM CDTSevere Thunderstorm WarningBROHidalgo, Starr46 min
Apr 20, 4:18 PM CDTSevere Thunderstorm WarningBROBrooks, Kenedy42 min
Apr 20, 4:36 PM CDTAreal Flood AdvisoryBROBrooks114 min
Apr 20, 4:37 PM CDTSevere Thunderstorm WarningBROKenedy38 min
Apr 20, 4:38 PM CDTSevere Thunderstorm WarningBROHidalgo52 min
Apr 20, 4:58 PM CDTSevere Thunderstorm WarningBROKenedy47 min
Apr 20, 5:04 PM CDTSpecial Marine WarningBRO2 hr
Apr 20, 5:08 PM CDTSevere Thunderstorm WarningBROHidalgo52 min
Apr 20, 5:16 PM CDTSevere Thunderstorm WarningBROKenedy, Willacy27 min
Apr 20, 5:17 PM CDTAreal Flood AdvisoryBROHidalgo, Starr118 min
Apr 20, 5:20 PM CDTAreal Flood AdvisoryBROKenedy115 min
Apr 20, 5:30 PM CDTSevere Thunderstorm WarningBROHidalgo, Starr45 min
Apr 20, 5:40 PM CDTSevere Thunderstorm WarningBROWillacy50 min
Apr 20, 5:53 PM CDTSevere Thunderstorm WarningBROCameron, Hidalgo52 min
Apr 20, 5:56 PM CDTSevere Thunderstorm WarningBROHidalgo24 min
Apr 20, 6:11 PM CDTSevere Thunderstorm WarningBROHidalgo, Willacy29 min
Apr 20, 6:18 PM CDTSevere Thunderstorm WarningBROCameron42 min
Apr 20, 6:30 PM CDTAreal Flood AdvisoryBROCameron, Willacy2 hr
Apr 20, 6:30 PM CDTTornado WarningBROCameron30 min
Apr 20, 6:56 PM CDTSevere Thunderstorm WarningBROCameron49 min
Apr 20, 6:57 PM CDTTornado WarningBROCameron12 min

Nearby

Tornado Warnings in Texas, 2012Every tornado warning in 2012Tornadoes 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.