Alert archive / Texas / Flash Flood Warnings in 2012

Flash Flood Warning 3, NWS Brownsville, TX

March 29, 2012Cameron County, Hidalgo County, Texas

NWS Brownsville, TX issued this flash flood warning at Mar 29, 2012, 11:31 PM CDT for Cameron County, Hidalgo County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 29, 2012, 11:31 PM CDT (04:31 UTC)
Expired
Mar 30, 2012, 2:00 AM CDT
In force
2 hr
Issued by
NWS Brownsville, TX
Area
Storm-based polygon
Flood severity
None

Counties Cameron County, TX, Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 61 km from the middle of the area, began a volume at 04:31 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.

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 4.5 hours before the alert went out and 63 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 00:00Z on 2012-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1987 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 00:00Z on 2012-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.193958Sfc1 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
1987 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
741 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

673 
WGUS54 KBRO 300431
FFWBRO
TXC061-215-300700-
/O.NEW.KBRO.FF.W.0003.120330T0431Z-120330T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1131 PM CDT THU MAR 29 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CAMERON COUNTY IN DEEP SOUTH TEXAS...
  SOUTHEASTERN HIDALGO COUNTY IN DEEP SOUTH TEXAS...
  THIS INCLUDES THE CITIES OF...WESLACO...MERCEDES...EDCOUCH.

* UNTIL 200 AM CDT

* AT 1131 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS INDICATED 
TORRENTIAL RAINFALL OF MORE THAN 3 INCHES SINCE 1030 PM FROM SLOW 
MOVING THUNDERSTORMS NEAR MERCEDES AND LA FERIA AND AND AREAS WEST 
OF HARLINGEN.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR.

  OTHER LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ELSA...
  GRAND ACRES...INDIAN HILLS...LA BLANCA...LA FERIA NORTH...LA
  VILLA...LAGUNA SECA...LLANO GRANDE...MIDWAY NORTH...MIDWAY SOUTH...
  MILA DOCE...MUNIZ...OLIVAREZ...RATAMOSA...SANTA ROSA...TIERRA
  BONITA...VILLA VERDE AND YZNAGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIDESPREAD FLOODING IS OCCURRING OR WILL OCCUR SOON. NUMEROUS ROADS
WILL BE CLOSED...AND HOMES ESPECIALLY IN LOW LYING AREAS...WILL
BECOME INUNDATED. MOVE TO HIGHER GROUND IMMEDIATELY!

DON'T BECOME A STATISTIC. TURN AROUND...DON'T DROWN!

&&

LAT...LON 2611 9800 2628 9811 2634 9781 2634 9780
      2617 9779

$$

JGG
1 follow-up statement
598 
WGUS74 KBRO 300636
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
136 AM CDT FRI MAR 30 2012

TXC061-215-300700-
/O.CON.KBRO.FF.W.0003.000000T0000Z-120330T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HIDALGO TX-CAMERON TX-
136 AM CDT FRI MAR 30 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN CAMERON AND
SOUTHEASTERN HIDALGO COUNTIES UNTIL 200 AM CDT...

  LOCATIONS AFFECTED INCLUDE...
  WESLACO.
  MERCEDES.
  EDCOUCH.

AT 130 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING
STILL OCCURRING ALONG BUSINESS 83 IN THE CITY OF WESLACO. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR.

OTHER LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ELSA...GRAND
ACRES...INDIAN HILLS...LA BLANCA...LA FERIA NORTH...LA VILLA...LAGUNA
SECA...LLANO GRANDE...MIDWAY NORTH...MIDWAY SOUTH...MILA DOCE...
MUNIZ...OLIVAREZ...RATAMOSA...SANTA ROSA...TIERRA BONITA...VILLA
VERDE AND YZNAGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIDESPREAD FLOODING IS OCCURRING OR WILL OCCUR SOON. NUMEROUS ROADS
WILL BE CLOSED...AND HOMES ESPECIALLY IN LOW LYING AREAS...WILL
BECOME INUNDATED. MOVE TO HIGHER GROUND IMMEDIATELY!

&&

LAT...LON 2611 9800 2628 9811 2634 9781 2634 9780
      2617 9779

$$

TOMASELLI

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 7:25 PM CDTSevere Thunderstorm WarningBROHidalgo, Jim Hogg, Starr65 min
Mar 29, 7:41 PM CDTAreal Flood AdvisoryBROHidalgo, Starr64 min
Mar 29, 8:29 PM CDTAreal Flood AdvisoryBROBrooks, Jim Hogg2 hr
Mar 29, 8:37 PM CDTSevere Thunderstorm WarningBROHidalgo53 min
Mar 29, 8:40 PM CDTAreal Flood AdvisoryBROHidalgo95 min
Mar 29, 9:09 PM CDTTornado WarningBROHidalgo36 min
Mar 29, 9:12 PM CDTFlash Flood WarningBROHidalgo, Zapata17 days
Mar 29, 9:20 PM CDTSevere Thunderstorm WarningBROStarr33 min
Mar 29, 9:31 PM CDTSevere Thunderstorm WarningBROHidalgo29 min
Mar 29, 9:46 PM CDTTornado WarningBROHidalgo29 min
Mar 29, 10:18 PM CDTSevere Thunderstorm WarningBROHidalgo42 min
Mar 29, 10:47 PM CDTFlash Flood WarningBROHidalgo3 hr
Mar 29, 11:19 PM CDTAreal Flood AdvisoryBROCameron, Hidalgo14 min
Mar 29, 11:54 PM CDTSpecial Marine WarningBRO76 min
Mar 30, 12:31 AM CDTAreal Flood AdvisoryBROCameron76 min
Mar 30, 2:08 AM CDTAreal Flood WarningBROCameron, Hidalgo2 hr
Mar 30, 2:53 AM CDTSpecial Marine WarningBRO70 min
Mar 30, 3:32 AM CDTSmall Craft Advisory for Hazardous SeasBRO2 hr

Nearby

Flash Flood Warnings in Texas, 2012Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.