2 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Brownsville, TX wrote its last area forecast discussion before the first event at Sep 18, 2:10 PM CST, 1 hour earlier.
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 310 PM CDT THU SEP 18 2003 .SHORT TERM...BUSY DAY TDY AS ATM STARTS TO SHOW ITSELF BY LATE PM...WITH HVY RAFL BEGINNING. PWATS NEAR 2.50 INCH AT CRP/BRO AND WITH LLVL SELY FLOW...THESE VALUES WILL STAY HIGH. ALL MDLS AGREE THAT S/WV ENERGY THRU THE SUBTROPICAL JET STREAM ALONG WITH SFC TROF ALONG THE COAST WILL PRODUCE HVY RAFL ACROSS THE RIO GRANDE VLY. LOCALIZED 2 TO 4 INCHES OF RAINFALL ARE POSSIBLE THRU FRI PM. AS CF NUDGES CLOSER TO VLY FRI PM...ADDITIONAL FORCING AND MSTR CONVERGENCE WILL RESULT IN HVY RAFL TO CONTINUE INTO SAT. .EXTENDED...SCT POPS WILL REMAIN WITH US UNTIL MON PM...WHEN BROAD MEAN CENTRAL CONUS TROF BRINGS NW FLOW ALOFT...WITH CF PASSAGE EARLY TUE AND CHILLIER TEMPS. .MARINE...AT 2 PM BUOY 020 REPORTED EAST WINDS AT 18 KNOTS WITH GUSTS TO 21 KNOTS AND SEAS AT 6 FEET 6 SECONDS. A LOW PRESSURE TROUGH LOCATED NEAR THE TEXAS WESTERN GULF COAST COMBINED WITH A WEAK COLD FRONT MOVING INTO NORTHERN TEXAS WILL GENERATE SHOWERS AND THUNDERSTORMS ACROSS THE MARINE AREAS OF DEEP SOUTH TEXAS THROUGH SATURDAY. SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO EARLY NEXT WEEK AS A STRONGER COLD FRONT APPROACHES DEEP SOUTH TEXAS AND IS EXPECTED TO MOVE ACROSS THE MARINE AREAS NEXT TUESDAY. SMALL CRAFT ADVISORIES MAY BE NECESSARY MONDAY. .AVIATION...VFR CONDITIONS WITH TEMPORARY MVFR CONDITIONS ARE OCCURRING OVER THE REGIONAL AIRPORTS THIS AFTERNOON. VFR CONDITIONS WITH PERIODS OF MVFR OR IFR CONDITIONS ARE EXPECTED THE NEXT FEW DAYS. THE MVFR OR IFR CONDITIONS WILL OCCUR DUE TO REDUCED CEILINGS AND VISIBILITIES OCCURRING DURING SHOWERS OR THUNDERSTORMS. EXPECT LIGHT TO MODERATE EAST TO SOUTHEAST WINDS AND PERIODS OF SHOWERS AND A POSSIBLE THUNDERSTORM THE NEXT 24 HOURS. .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE TT 075/086 072/086 072 80/80/50/80/60 HARLINGEN TT 075/085 072/085 071 80/80/50/80/60 MCALLEN TT 075/085 071/085 071 80/80/60/80/50 RIO GRANDE CITY TT 073/085 070/085 069 80/80/70/80/60 SOUTH PADRE ISLAND TT 078/083 076/084 074 80/80/50/80/60 .BRO...FFA FOR ALL DEEP SOUTH TEXAS UNTIL 5 PM FRI. SYNOPTIC/GRIDS...58 MARINE/AVIATION...63 THIS PRODUCT IS ALSO AVAILABLE ON OUR INTERNET WEB PAGE AT: HTTP://WWW.SRH.NOAA.GOV/BRO
TXZ248>257-191100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BROWNSVILLE TX 600 AM CDT THU SEP 18 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS. .DAY ONE...TODAY AND TONIGHT. ...A FLASH FLOOD WATCH IS IN EFFECT UNTIL 5 PM... SHOWERS AND THUNDERSTORMS ARE LIKELY TODAY ACROSS DEEP SOUTH TEXAS... AS A MOIST AND UNSTABLE AIR MASS REMAINS ACROSS DEEP SOUTH TEXAS AND AN UPPER LEVEL DISTURBANCE MOVES ACROSS THE AREA. THE GREATEST WEATHER HAZARD TODAY LOCALIZED FLOODING. NO SPOTTER ACTIVATION MAY BE NECESSARY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE CHANCES OF LOCALIZED FLOODING WILL CONTINUE THROUGH MONDAY FROM SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS... ENHANCED BY A WEAK COLD FRONT WHICH WILL APPROACH DEEP SOUTH TEXAS FRIDAY...AND A STRONGER COLD FRONT ON MONDAY...LEADING TO MOSTLY CLEAR SKIES FOR TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT. NO SPOTTER ACTIVATION MAY BE NECESSARY FRIDAY THROUGH MONDAY. 59
The Brownsville radar (KBRO), 27 km away, was scanning. The volume nearest the first event began at 21:10 UTC.
2 flash flood. Local standard time, as filed.
An off-duty NWS employee reported flash flooding of city streets near downtown Brownsville due to heavy rains.
Flash flooding of access roads was reported in eastern Brownsville. No flooding of businesses or homes was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2003Every state in 2003This day in weather historyWarnings in Texas, September 2003
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5327741, 5327742.