Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 2, NWS Brownsville, TX

April 10, 2015Hidalgo County, Texas

NWS Brownsville, TX issued this flash flood warning at Apr 10, 2015, 7:42 PM CDT for Hidalgo County, Texas. It was in force for 2 hr. 1 report 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 10, 2015, 7:42 PM CDT (00:42 UTC)
Expired: Apr 10, 2015, 9:45 PM CDT
In force: 2 hr
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

County Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 110 km from the middle of the area, began a volume at 00:41 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
Apr 10, 8:00 PM CDT	FLASH FLOOD	Colonia Martinez, TX	A FOOT OF WATER AT PENITAS SHOPPING PLAZA.

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

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 0.7 hours before the alert went out and 113 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: 1080 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1008 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

008 
WGUS54 KBRO 110042
FFWBRO
TXC215-110245-
/O.NEW.KBRO.FF.W.0002.150411T0042Z-150411T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
742 PM CDT FRI APR 10 2015

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN HIDALGO COUNTY IN DEEP SOUTH TEXAS...

* UNTIL 945 PM CDT
    
* AT 740 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LA JOYA 
  CITY HALL...LA JOYA HIGH SCHOOL...PENITAS...LA JOYA...NARCISO G. 
  CAVAZOS ELEMENTARY SCHOOL...DR. AMERICO PAREDES ELEMENTARY 
  SCHOOL...JIMMY CARTER HIGH SCHOOL...DOFFING...JOHN F KENNEDY 
  ELEMENTARY SCHOOL...LORENZO DE ZAVALA MIDDLE SCHOOL...CITRUS 
  CITY...CESAR CHAVEZ MIDDLE SCHOOL...ABRAM-PEREZVILLE...GUILLERMO 
  FLORES ELEMENTARY SCHOOL...ANN RICHARDS MIDDLE SCHOOL...CHAPA 
  ELEMENTARY SCHOOL...HAVANA AND JUAN N. SEGUIN ELEMENTARY SCHOOL.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 2620 9844 2622 9844 2623 9845 2622 9845
      2623 9846 2622 9848 2620 9848 2621 9849
      2621 9851 2622 9850 2623 9852 2624 9852
      2623 9853 2635 9848 2632 9835 2618 9840

$$

CASTILLO

2 follow-up statements

033 
WGUS74 KBRO 110113
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
813 PM CDT FRI APR 10 2015

TXC215-110245-
/O.CON.KBRO.FF.W.0002.000000T0000Z-150411T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HIDALGO TX-
813 PM CDT FRI APR 10 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
SOUTHWESTERN HIDALGO COUNTY...

AT 808 PM CDT...THE PUBLIC REPORTED A FOOT OF STANDING WATER IN A 
PENITAS SHOPPING MALL WHERE AN ESTIMATED 2 TO 4 INCHES OF RAIN HAS 
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO CONTINUE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...PENITAS...LA 
JOYA...DOFFING...CITRUS CITY...ABRAM-PEREZVILLE...HAVANA.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES CAN BE EXPECTED IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 2620 9844 2622 9844 2623 9845 2622 9845
      2623 9846 2622 9848 2620 9848 2621 9849
      2621 9851 2622 9850 2623 9852 2624 9852
      2623 9853 2635 9848 2632 9835 2618 9840

$$

BIRCHFIELD

619 
WGUS74 KBRO 110247
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
947 PM CDT FRI APR 10 2015

TXC215-110256-
/O.EXP.KBRO.FF.W.0002.000000T0000Z-150411T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HIDALGO TX-
947 PM CDT FRI APR 10 2015

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN HIDALGO COUNTY HAS
EXPIRED...

THE HEAVY RAIN THAT PROMPTED THE WARNING HAS SINCE DIMINISHED...AND 
FLOODING IS NO LONGER EXPECTED TO POSE A THREAT.

LAT...LON 2620 9844 2622 9844 2623 9845 2622 9845
      2623 9846 2622 9848 2620 9848 2621 9849
      2621 9851 2622 9850 2623 9852 2624 9852
      2623 9853 2635 9848 2632 9835 2618 9840

$$

BIRCHFIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:04 PM CDT	Special Weather Statement	BRO	Starr	41 min
Apr 10, 7:17 PM CDT	Special Weather Statement	BRO	Hidalgo	43 min
Apr 10, 7:17 PM CDT	Severe Thunderstorm Warning	BRO	Starr	43 min
Apr 10, 7:20 PM CDT	Special Weather Statement	BRO	Hidalgo	40 min
Apr 10, 8:01 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Willacy	119 min
Apr 10, 8:47 PM CDT	Areal Flood Advisory	BRO	Starr	118 min
Apr 10, 9:33 PM CDT	Special Weather Statement	BRO	Brooks	42 min
Apr 10, 10:06 PM CDT	Areal Flood Advisory	BRO	Hidalgo	114 min
Apr 11, 12:47 AM CDT	Special Weather Statement	BRO	Zapata	43 min
Apr 11, 1:28 AM CDT	Special Weather Statement	BRO	Zapata	47 min
Apr 11, 8:09 AM CDT	Special Weather Statement	BRO	Zapata	51 min
Apr 11, 8:59 AM CDT	Special Weather Statement	BRO	Zapata	46 min
Apr 11, 9:28 AM CDT	Flash Flood Watch	BRO	Brooks, Hidalgo, Jim Hogg, Starr, Zapata	22 hr
Apr 11, 9:47 AM CDT	Areal Flood Advisory	BRO	Zapata	3 hr
Apr 11, 6:14 PM CDT	Areal Flood Advisory	BRO	Brooks	2 hr

Nearby

Flash Flood Warnings in Texas, 2015 Every flash flood warning in 2015

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.