Alert archive / Texas / Flash Flood Warnings in 2012

Flash Flood Warning 16, NWS Brownsville, TX

November 4, 2012Brooks County, Jim Hogg County, Texas

NWS Brownsville, TX issued this flash flood warning at Nov 4, 2012, 4:36 PM CST for Brooks County, Jim Hogg County, Texas. It was in force for 72 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
Nov 4, 2012, 4:36 PM CST (22:36 UTC)
Expired
Nov 4, 2012, 5:48 PM CST
In force
72 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon
Flood severity
None

Counties Brooks County, TX, Jim Hogg County, TX

The radar

The Corpus Christi radar (KCRP), 116 km from the middle of the area, began a volume at 22:35 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

Corpus Christi, TX (KCRP), launched 12:00Z, 10.6 hours before the alert went out and 122 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, Corpus Christi, TX at 12:00Z on 2012-11-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1404 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, Corpus Christi, TX at 12:00Z on 2012-11-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.1939587897Sfc1 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
1404 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

683 
WGUS54 KBRO 042236
FFWBRO
TXC047-247-050000-
/O.NEW.KBRO.FF.W.0016.121104T2236Z-121105T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
436 PM CST SUN NOV 4 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN BROOKS COUNTY IN DEEP SOUTH TEXAS...
  SOUTHEASTERN JIM HOGG COUNTY IN DEEP SOUTH TEXAS...

* UNTIL 600 PM CST

* AT 433 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS INDICATED
  TORRENTIAL RAIN OF 4 TO 6 INCHES PER HOUR FROM NEARLY STATIONARY 
  THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER THE WARNED AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR...ESPECIALLY IN THE VICINITY OF ENCINO AND RACHAL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
BROWNSVILLE.

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

&&

LAT...LON 2700 9799 2678 9799 2679 9851 2710 9846

$$

TOMASELLI
2 follow-up statements
032 
WGUS74 KBRO 042313
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
513 PM CST SUN NOV 4 2012

TXC047-247-050000-
/O.CON.KBRO.FF.W.0016.000000T0000Z-121105T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JIM HOGG TX-BROOKS TX-
513 PM CST SUN NOV 4 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN BROOKS AND
SOUTHEASTERN JIM HOGG COUNTIES UNTIL 600 PM CST...

  LOCATIONS AFFECTED INCLUDE...ENCINO...RACHAL

AT 512 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS INDICATED
TORRENTIAL RAIN OF FOUR TO SIX INCHES PER HOUR FROM NEARLY STATIONARY 
THUNDERSTORMS WITH VERY HEAVY RAINFALL. 

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A LIFE THREATENING FLOOD! MOST FLOOD DEATHS OCCUR IN
AUTOMOBILES. STAY HOME. IF TRAVELING...DO NOT CROSS FLOODED ROADWAYS
OR STREAMS. WHEN NEARING A FLOOD AREA...TURN AROUND AND DRIVE TO
HIGHER TERRAIN.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
BROWNSVILLE.

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

&&

LAT...LON 2700 9799 2678 9799 2679 9851 2710 9846

$$

TOMASELLI
902 
WGUS74 KBRO 042348
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
548 PM CST SUN NOV 4 2012

TXC047-247-050003-
/O.CAN.KBRO.FF.W.0016.000000T0000Z-121105T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JIM HOGG TX-BROOKS TX-
548 PM CST SUN NOV 4 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN BROOKS AND
SOUTHEASTERN JIM HOGG COUNTIES IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED. WATER LEVELS HAVE RECEDED OR
WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS
BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT
AGENCY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2700 9799 2678 9799 2679 9851 2710 9846

$$

TOMASELLI

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 4, 1:46 AM CDTSpecial Marine WarningBRO59 min
Nov 4, 9:01 AM CSTSpecial Marine WarningBRO59 min
Nov 4, 12:11 PM CSTSpecial Marine WarningBRO42 min
Nov 4, 12:19 PM CSTSevere Thunderstorm WarningBROCameron26 min
Nov 4, 12:58 PM CSTSevere Thunderstorm WarningBROCameron22 min
Nov 4, 1:31 PM CSTSpecial Marine WarningBRO44 min
Nov 4, 4:08 PM CSTAreal Flood AdvisoryBROBrooks, Jim Hogg82 min
Nov 4, 5:01 PM CSTAreal Flood AdvisoryBROHidalgo, Starr59 min
Nov 4, 5:18 PM CSTAreal Flood AdvisoryBROBrooks, Jim Hogg57 min

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.