Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 32, NWS Brownsville, TX

October 9, 2002Cameron County, Texas

NWS Brownsville, TX issued this flash flood warning at Oct 9, 2002, 3:01 PM CDT for Cameron 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: Oct 9, 2002, 3:01 PM CDT (20:01 UTC)
Expired: Oct 9, 2002, 6:00 PM CDT
In force: 3 hr
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 26 km from the middle of the area, began a volume at 20:00 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, 8.0 hours before the alert went out and 28 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: 1746 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 743 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 9 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 092001
FFWBRO
TXC061-092300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
258 PM CDT WED OCT 9 2002

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 600 PM CDT

* AT 249 PM CDT...NATIONAL WEATHER SERVICE RADAR IN BROWNSVILLE      
  SHOWED NUMEROUS THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER MUCH   
  OF SOUTHEAST CAMERON COUNTY. MOVEMENT IS NORTHEAST AT 20 MPH...AND 
  THESE THUNDERSTORMS CONTINUE TO TRAIN OVER BROWNSVILLE...PORT      
  ISABEL...SOUTH PADRE ISLAND AND OTHER COASTAL CITIES. DOPPLER      
  RADAR ESTIMATES FROM 3 TO 5 INCHES OF RAINFALL HAS BEEN RECEIVED   
  IN A LARGE AREA OF SOUTHEAST CAMERON COUNTY.

* 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...PORT ISABEL...SAN BENITO...BROWNSVILLE...RANCHO
  VIEJO...LOS FRESNOS AND LAGUNA VISTA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND 
ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

LAT...LON 2626 9786 2599 9786 2570 9708 2637 9710

PHILO

1 follow-up statement

000 
WGUS74 KBRO 092240
FFSBRO
TXC061-092330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
538 PM CDT WED OCT 9 2002

...THE FLASH FLOOD WARNING FOR CAMERON COUNTY HAS BEEN
CANCELED...

AT 532 PM CDT...RADAR INDICATED THAT THE STRONG THUNDERSTORMS
OVER CAMERON COUNTY HAVE MOVED SOUTH INTO NORTHEAST MEXICO.
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS REMAIN OVER
PORTIONS OF CAMERON COUNTY.  THE FLASH FLOOD WARNING FOR
CAMERON COUNTY HAS BEEN CANCELED.

MANY ROADS OVER SOUTHEASTERN CAMERON COUNTY WILL CONTINUE TO
BE HAZARDOUS FOR DRIVING...AS PONDING AND FLOODING PERSISTS THIS
EVENING. CONTINUE TO DRIVE WITH CARE IN THESE AREAS.

ADDITIONAL RAINFALL IS POSSIBLE OVER THE RIO GRANDE VALLEY TONIGHT...
HOWEVER THE CHANCES FOR RAIN DECREASES ON THURSDAY.

FOR THE LATEST WEATHER INFORMATION CHECK OUT YOUR BROWNSVILLE
NATIONAL WEATHER SERVICE WEBSITE AT WWW.SRH.NOAA.GOV/BRO OR LISTEN
TO NOAA WEATHER RADIO.

65

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 9, 10:31 AM CDT	Special Marine Warning	BRO		44 min

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.