Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 18, NWS Brownsville, TX

September 10, 2002Starr County, Texas

NWS Brownsville, TX issued this flash flood warning at Sep 10, 2002, 12:41 AM 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: Sep 10, 2002, 12:41 AM CDT (05:41 UTC)
Expired: Sep 10, 2002, 3:30 AM 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), 139 km from the middle of the area, began a volume at 05:44 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, 5.7 hours before the alert went out and 142 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: 2891 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -67 m²/s²
0-3 km storm-relative helicity: -7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KBRO 100541
FFWBRO
TXC427-100830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1234 AM CDT TUE SEP 10 2002

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 330 AM CDT

* AT 1229 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  A CLUSTER OF SLOW MOVING THUNDERSTORMS OVER CENTRAL AND EASTERN    
  STARR COUNTY. ONE HOUR RADAR ESTIMATED RAINFALL IS IN THE 3 TO 5   
  INCH RANGE.

* 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...RINCON AND SAN ISIDRO.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS AND FLASH FLOODS. 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 RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

FOR THE MOST UP TO DATE WEATHER INFORMATION VISIT YOUR BROWNSVILLE 
NATIONAL WEATHER SERVICE WEBSITE AT WWW.SRH.NOAA.GOV/BRO OR LISTEN 
TO NOAA WEATHER RADIO...OR YOUR LOCAL MEDIA OUTLET.

LAT...LON 2677 9838 2626 9861 2641 9886 2679 9870

VANSPEYBROECK
$$

1 follow-up statement

000 
WGUS74 KBRO 100712
FFSBRO
TXC427-100830-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
208 AM CDT TUE SEP 10 2002

...A FLASH FLOOD WARNING CONTINUES UNTIL 330 AM CDT FOR EASTERN 
STARR COUNTY IN DEEP SOUTH TEXAS...

AT 204 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL 6 MILES SOUTH OF LA 
GLORIA...OR 15 MILES NORTHWEST OF MCCOOK...MOVING SLOWLY TO THE 
NORTH.

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 FLOODING 
INCLUDE...LA GLORIA. THE INTERSECTION OF FM 755 AND 1017 MAY BE 
COVERED WITH WATER BY SUNRISE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

LAT...LON 2677 9863 2644 9875 2641 9855 2678 9836

VANSPEYBROECK

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 10:52 PM CDT	Flash Flood Warning	BRO	Jim Hogg	3 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.