Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 9, NWS Brownsville, TX

July 15, 2002Starr County, Texas

NWS Brownsville, TX issued this flash flood warning at Jul 15, 2002, 6:13 PM CDT for Starr County, Texas. It was in force for 3 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: Jul 15, 2002, 6:13 PM CDT (23:13 UTC)
Expired: Jul 15, 2002, 9:00 PM CDT
In force: 3 hr
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

County Starr County, TX

The radar

The Brownsville radar (KBRO), 165 km from the middle of the area, began a volume at 23:14 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 12:00Z, 11.2 hours before the alert went out and 168 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: 2605 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 656 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -3 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.

000 
WGUS54 KBRO 152313
FFWBRO
TXC427-160200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
609 PM CDT MON JUL 15 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  STARR COUNTY IN DEEP SOUTH TEXAS

* UNTIL 900 PM CDT

* AT 602 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY 
HEAVY RAINFALL 6 MILES SOUTHEAST OF EL SAUZ...THESE STORMS WERE 
NEARLY STATIONARY. RADAR ESTIMATES INDICATED RAINFALL AMOUNTS OF 2 
TO 3 INCHES HAVE ALREADY FALLEN OVER THE WARNED AREA WITH ADDITIONAL 
RAIN EXPECTED. 

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH   
FLOODING INCLUDE...EL SAUZ...RIO GRANDE CITY AND SANTA CATARINA.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW WATER CROSSINGS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON
FOOT.

LAT...LON 2640 9936 2615 9869 2672 9845 2675 9889

MM

1 follow-up statement

000 
WGUS74 KBRO 160010
FFSBRO
TXC427-160200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
706 PM CDT MON JUL 15 2002

...A FLASH FLOOD WARNING CONTINUES FOR STARR COUNTY UNTIL 900 PM...

AT 702 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS 
WITH EXCESSIVE RAINFALL 8 MILES NORTH OF GARCIASVILLE...OR 11 MILES 
NORTHEAST OF RIO GRANDE CITY...WITH VERY LITTLE MOVEMENT.

HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM THIS
EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS
THAT WILL EXPERIENCE FLOODING INCLUDE AREAS NORTH AND EAST OF RIO 
GRANDE CITY IN SOUTHEAST STARR COUNTY.

AT 655 PM...LAW ENFORCEMENT OFFICIALS REPORTED WATER OVER HIGHWAY 
755 NEAR LA GLORIA.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW WATER CROSSINGS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON
FOOT.

LAT...LON 2638 9927 2600 9869 2673 9848 2675 9890

MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 3:30 PM CDT	Flash Flood Warning	BRO	Jim Hogg	2 hr

Nearby

Flash Flood Warnings in Texas, 2002 Every flash flood warning in 2002

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.