An upper level disturbance moved across the Rio Grande Valley producing showers and isolated thunderstorms across portions of the County Warning Area. Some thunderstorms produced locally heavy rainfall and flooding.
Every event with a place to put it. 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 episode as NWS BRO wrote it up.
An upper level disturbance moved across the Rio Grande Valley producing showers and isolated thunderstorms across portions of the County Warning Area. Some thunderstorms produced locally heavy rainfall and flooding.
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 19, 12:45 PM CST, 3 hours 59 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 145 PM CDT SAT SEP 19 2009 .DISCUSSION... TEMPERATURES WILL BE ABOVE NORMAL FOR THIS TIME OF YEAR TODAY DUE TO AMPLE AMOUNT OF SUNSHINE. BRO SOUNDING THIS MORNING SHOWED A PRECIP WATER OF 2.05 AND A K-INDEX OF 31. SHOWERS AND THUNDERSTORMS COULD DEVELOP THIS AFTERNOON AS MOISTURE AND INSTABILITY HAS INCREASED. MOISTURE WILL DECREASE ONCE AGAIN MONDAY AND AND DURING THE DAY ON TUESDAY OF NEXT WEEK AS A HIGH PRESSURE RIDGE WILL DOMINATE THE AREA. A COLD FRONT WILL APPROACH THE AREA TUESDAY NIGHT CAUSING THE CHANCES FOR SHOWERS AND THUNDERSTORMS TO INCREASE. BOUNDARY LAYER RELATIVE HUMIDITIES SHOW GREATER THAT 70 PERCENT OVER MOST AREAS OF THE ATMOSPHERE BOTH TUESDAY NIGHT THROUGH THURSDAY OF NEXT WEEK. WINDS WILL BE MODERATE FROM THE NORTHEAST BY WEDNESDAY OF NEXT WEEK WITH SLIGHTLY COOLER TEMPERATURES PREDICTED. THE AIRMASS WILL MODIFY AND GET BACK TO NORMAL BY THE NEXT WEEKEND. && .MARINE...AT NOON BUOY 20 REPORTED NORTH WINDS AT 6 KNOTS WITH GUSTS TO 8 KNOTS AND SEAS AT 3 FEET WITH A 3 SECOND PERIOD. THE WINDS AND SEAS WILL REMAIN LOW ACROSS THE MARINE AREAS THROUGH MONDAY AS A WEAK PRESSURE GRADIENT CONTINUES ACROSS THE COASTAL WATERS. NORTHERLY WINDS WILL CONTINUE TODAY BUT THE WINDS WILL SHIFT TO THE EAST AND SOUTHEAST ON SUNDAY. SOUTHEASTERLY WINDS WILL PREVAIL ACROSS THE MARINE AREAS MONDAY THROUGH THE MIDDLE OF NEXT WEEK. THERE IS A SLIGHT CHANCE FOR SHOWERS AND ISOLATED THUNDERSTORMS MOVING ACROSS PORTIONS OF THE MARINE AREAS AT TIMES THROUGH EARLY NEXT WEEK. A COLD FRONT WILL MOVE INTO SOUTH TEXAS TUESDAY NIGHT AND WEDNESDAY INCREASING THE WINDS AND SEAS AND THE CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS. THE WINDS AND SEAS MAY INCREASE IN OR NEAR ANY SHOWERS OR THUNDERSTORMS. && .AVIATION...VFR CONDITIONS WITH LIGHT NORTHERLY WINDS TO CALM CONDITIONS ARE BEING REPORTED AT THE REGIONAL AIRPORTS. THE WINDS WILL CONTINUE LIGHT AND VARIABLE TO LIGHT FROM THE NORTHEAST THIS EVENING THEN LIGHT AND VARIABLE TO CALM OVERNIGHT. THERE IS A SLIGHT CHANCE FOR SHOWERS AND ISOLATED THUNDERSTORMS MOVING ACROSS PORTIONS OF THE CWA THIS AFTERNOON. CEILINGS AND OR VISIBILITIES MAY LOWER TO TEMPORARY MVFR CONDITIONS IN OR NEAR ANY SHOWERS OR THUNDERSTORMS. OTHERWISE VFR CONDITIONS WILL PREVAIL ACROSS THE CWA DURING THE NEXT 24 HOURS. && .PRELIMINARY POINT TEMPS/POPS... BAYVIEW/PORT ISABEL 75 92 78 92 / 20 20 20 10 BROWNSVILLE 74 93 77 94 / 20 20 20 10 HARLINGEN 73 96 76 96 / 20 20 20 10 MCALLEN 75 95 77 97 / 20 20 20 10 RIO GRANDE CITY 73 95 76 98 / 20 20 20 10 SOUTH PADRE ISLAND 78 87 78 88 / 20 20 20 10 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT: HTTP://WWW.WEATHER.GOV/BROWNSVILLE 65/63
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BROWNSVILLE TX 355 PM CDT SAT SEP 19 2009 GMZ130-132-135-150-155-170-175-TXZ248>257-201100- LAGUNA MADRE FROM THE PORT OF BROWNSVILLE TO THE ARROYO COLORADO- LAGUNA MADRE FROM THE ARROYO COLORADO TO 5 NM NORTH OF PORT MANSFIELD TX- LAGUNA MADRE FROM 5 NM NORTH OF PORT MANSFIELD TO BAFFIN BAY TX- COASTAL WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM- COASTAL WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM- WATERS FROM PORT MANSFIELD TO THE RIO GRANDE EXTENDING FROM 20 TO 60 NM- WATERS FROM BAFFIN BAY TO PORT MANSFIELD EXTENDING FROM 20 TO 60 NM-ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 355 PM CDT SAT SEP 19 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS...THE GULF OF MEXICO AND THE LAGUNA MADRE. .DAY ONE...REST OF TODAY AND TONIGHT. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT THOSE PORTIONS OF DEEP SOUTH TEXAS ALONG AND WEST OF THE HIGHWAY 77 CORRIDOR THIS AFTERNOON AND EVENING. ANY OF THE STRONGER THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINS...BRIEF WIND GUSTS AND OCCASIONAL CLOUD TO GROUND LIGHTNING. BRIEF GUSTY WINDS AND ROUGH SEAS ALONG WITH HEAVY RAIN AND OCCASIONAL LIGHTNING MAY OCCUR WITH ANY THUNDERSTORM THAT MOVES ACROSS THE COASTAL WATERS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. ISOLATED THUNDERSTORMS MAY MOVE ACROSS DEEP SOUTH TEXAS AT TIMES SUNDAY AND MONDAY. RAIN CHANCES WILL INCREASE TUESDAY THROUGH THURSDAY AND SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE FORECASTED AS A COLD FRONT APPROACHES AND MOVES SOUTH OF OUR REGION. STRONG THUNDERSTORMS AND HEAVY RAIN ARE POSSIBLE. TUESDAY NIGHT, THE WINDS WILL INCREASE TO NEAR 15 KNOTS FROM THE NORTHEAST AND SEAS WILL BUILD TO THE 2 TO 4 FEET RANGE ACROSS THE GULF COASTAL WATERS LATE TUESDAY INTO FRIDAY. SMALL CRAFT ADVISORIES ARE NOT EXPECTED DURING THIS PERIOD. WINDS AND SEAS WILL BE HIGHER IN AND NEAR THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. SPEECE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 239 PM CDT SAT SEP 19 2009 TXZ252-253-192045- STARR-HIDALGO- 239 PM CDT SAT SEP 19 2009 ...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUE TO DEVELOP ACROSS SOUTHEAST PORTIONS OF STARR COUNTY... SHOWERS...AND A FEW THUNDERSTORMS...MOVING EAST AT 5 MPH...WILL AFFECT RURAL SOUTHEASTERN STARR COUNTY AND RURAL WESTERN HIDALGO COUNTY...UNTIL 345 PM CDT. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL OCCUR. MOTORISTS CAN EXPECT PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS. 61/MC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 401 PM CDT SAT SEP 19 2009 TXZ254-256-192200- INLAND WILLACY-COASTAL WILLACY- 401 PM CDT SAT SEP 19 2009 ...HEAVY RAINS WILL AFFECT NORTHEAST PORTIONS OF WILLACY COUNTY... SHOWERS...AND A FEW THUNDERSTORMS...MOVING EAST AT 5 MPH...WILL AFFECT WILLAMAR...UNTIL 500 PM CDT. GUSTY WINDS UP TO 40 MPH WILL OCCUR. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL OCCUR. MOTORISTS CAN EXPECT PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS. 61/MC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 432 PM CDT SAT SEP 19 2009 TXZ254-256-192200- INLAND WILLACY-COASTAL WILLACY- 432 PM CDT SAT SEP 19 2009 ...STRONG THUNDERSTORMS WILL AFFECT EASTERN PORTIONS OF WILLACY COUNTY... A THUNDERSTORM...MOVING SOUTHEAST AT 10 MPH...WILL AFFECT PORFIRIO... UNTIL 500 PM CDT. GUSTY WINDS 40 TO 50 MPH MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. MINOR DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE... CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. THIS STORM WILL PRODUCE PEA SIZE HAIL. TORRENTIAL RAINS WILL CAUSE PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS. && WHEN DRIVING THROUGH HEAVY RAIN...SLOW DOWN. ALWAYS LEAVE A SAFE DISTANCE BETWEEN YOU AND OTHER VEHICLES. WHEN USING WIPERS...TURN ON HEADLIGHTS. AVOID DRIVING THROUGH PUDDLES THAT COULD HIDE POTHOLES OR CAUSE HYDROPLANING. MAKE SURE YOUR HEADLAMPS...TIRES...AND WIPERS ARE IN GOOD CONDITION. KEEP AN EMERGENCY KIT WHICH INCLUDES A FLASHLIGHT...FLARES...AND SIMPLE HAND TOOLS. SEVEN THOUSAND PEOPLE DIE IN WEATHER RELATED AUTOMOBILE ACCIDENTS EACH YEAR... MANY DUE TO POOR VISIBILITY AND WET ROADS. REMEMBER: VISIBILITY AND TRACTION LEAVE TIME FOR REACTION 61/MC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 457 PM CDT SAT SEP 19 2009 TXZ254-255-192300- INLAND WILLACY-INLAND CAMERON- 457 PM CDT SAT SEP 19 2009 ...STRONG THUNDERSTORMS WILL AFFECT NORTHWEST PORTIONS OF CAMERON COUNTY... A THUNDERSTORM...MOVING SOUTH AT 5 MPH...WILL AFFECT SEBASTIAN AND COMBES...UNTIL 600 PM CDT. GUSTY WINDS 40 TO 50 MPH MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. MINOR DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. THIS STORM WILL PRODUCE PEA SIZE HAIL. RAINFALL RATES OF 1 INCH PER HOUR ARE EXPECTED. 61/MC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 521 PM CDT SAT SEP 19 2009 TXZ251-253-254-192300- INLAND WILLACY-HIDALGO-KENEDY- 521 PM CDT SAT SEP 19 2009 ...STRONG THUNDERSTORMS WILL AFFECT EXTREME NORTHEAST PORTIONS OF HIDALGO COUNTY AND EXTREME SOUTHWEST PORTIONS OF KENEDY COUNTY AS WELL AS EXTREME NORTHWEST PORTIONS OF WILLACY COUNTY... A THUNDERSTORM...MOVING SOUTHEAST AT 10 MPH...WILL AFFECT RURAL SOUTHWESTERN KENEDY COUNTY AND RURAL NORTHEASTERN HIDALGO COUNTY... UNTIL 600 PM CDT. GUSTY WINDS 40 TO 50 MPH MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. MINOR DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE... CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. THIS STORM WILL PRODUCE PEA SIZE HAIL. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL OCCUR. MOTORISTS CAN EXPECT PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS. 61/MC
The Brownsville radar (KBRO), 42 km away, was scanning. The volume nearest the first event began at 22:45 UTC.
1 thunderstorm wind, 1 flash flood. Local standard time, as filed.
ASOS reported wind gusts to 60 miles per hour during a thunderstorm that moved through Cameron County.
The public reported Heavy rainfall in a thunderstorm which produced flooding on Business Highway 83 between Airport Drive and Texas. Some homes in the area were reported to have water up to the door steps. Major flooding was reported in nearby streets. Six inches of rain was estimated to have fallen during the thunderstorm. The Hidalgo County Emergency Manager reported thirteen intersections were closed due to the flooding and several cars were totaled due to the flood waters.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2009Every state in 2009This day in weather historyWarnings in Texas, September 2009
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: 196878, 196877.