Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 13, NWS Brownsville, TX

May 30, 2010Jim Hogg County, Texas

NWS Brownsville, TX issued this flash flood warning at May 30, 2010, 9:51 PM CDT for Jim Hogg County, Texas. It was in force for 54 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 30, 2010, 9:51 PM CDT (02:51 UTC)
Expired: May 30, 2010, 10:45 PM CDT
In force: 54 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

County Jim Hogg County, TX

The radar

The Corpus Christi radar (KCRP), 157 km from the middle of the area, began a volume at 02:50 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 00:00Z, 2.9 hours before the alert went out and 167 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: 1048 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: -81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

770 
WGUS54 KBRO 310251
FFWBRO
TXC247-310345-
/O.NEW.KBRO.FF.W.0013.100531T0251Z-100531T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
951 PM CDT SUN MAY 30 2010

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

  LOCATIONS AFFECTED INCLUDE...
  AGUA NUEVA.
  GUERRA.
  CUEVITAS.

* UNTIL 1045 PM CDT

* AT 944 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  TORRENTIAL RAIN OF FOUR TO SIX INCHES PER HOUR FROM A THUNDERSTORM 
  OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS TO RISE.

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

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

&&

LAT...LON 2680 9844 2679 9881 2679 9896 2702 9896
      2702 9873

$$

TOMASELLI

1 follow-up statement

580 
WGUS74 KBRO 310315
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1015 PM CDT SUN MAY 30 2010

TXC247-310345-
/O.CON.KBRO.FF.W.0013.000000T0000Z-100531T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JIM HOGG-
1015 PM CDT SUN MAY 30 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN JIM HOGG
COUNTY UNTIL 1045 PM CDT...

LOCATIONS AFFECTED INCLUDE...
  AGUA NUEVA.
  GUERRA.
  CUEVITAS.

AT 1014 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
TORRENTIAL RAINS OF FOUR TO SIX INCHES PER HOUR FROM A THUNDERSTORM 
OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&


LAT...LON 2680 9844 2679 9881 2679 9896 2702 9896
      2702 9873

$$

TOMASELLI

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 8:37 PM CDT	Areal Flood Advisory	BRO	Zapata	53 min
May 30, 9:01 PM CDT	Flash Flood Warning	BRO	Zapata	59 min
May 30, 9:09 PM CDT	Areal Flood Advisory	BRO	Jim Hogg	66 min
May 30, 9:34 PM CDT	Areal Flood Advisory	BRO	Starr	56 min
May 30, 9:43 PM CDT	Areal Flood Advisory	BRO	Zapata	62 min
May 30, 10:01 PM CDT	Flash Flood Warning	BRO	Zapata	59 min
May 30, 11:09 PM CDT	Areal Flood Advisory	BRO	Jim Hogg, Starr, Zapata	111 min

Nearby

Flash Flood Warnings in Texas, 2010 Every flash flood warning in 2010

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.