The remains of a weak upper level disturbance and surface trough triggered more slow moving thunderstorms on September 16, 2014, that exacerbated runoff across arroyos of the Upper Rio Grande Valley early that afternoon - runoff that likely began after locally heavy rainfall on the 13th.
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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.
The remains of a weak upper level disturbance and surface trough triggered more slow moving thunderstorms on September 16, 2014, that exacerbated runoff across arroyos of the Upper Rio Grande Valley early that afternoon - runoff that likely began after locally heavy rainfall on the 13th.
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 16, 5:36 AM CST, 6 hours 9 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 636 AM CDT TUE SEP 16 2014 .DISCUSSION...UPDATED FOR LATEST AVIATION DISCUSSION BELOW. && .AVIATION...SHOWERS AND ISOLD STORMS ASSOCIATED WITH THE TROPICAL WAVE MOVING ON SHORE IS OVER THE RANCHLANDS AND NEAR MFE. AS THE WAVE MOVES FURTHER INLAND IT IS EXPECTED THAT ADDITIONAL SHOWERS AND STORMS WILL DEVELOP AND AFFECT BRO AND HRL. BEST WINDOW FOR THIS TO HAPPEN IS LATE MORNING AND THROUGH THE AFTERNOON HOURS. BRIEF MVFR/IFR CONDS ARE EXPECTED WITH THE HEAVIER ACTIVITY. PRECIPITATION WILL END FROM EAST TO WEST THIS EVENING WITH PREVAILING VFR TONIGHT THROUGH END OF PERIOD. && .PREV DISCUSSION... /ISSUED 422 AM CDT TUE SEP 16 2014/ SHORT TERM /NOW THROUGH WEDNESDAY/...BASED ON SURFACE OBSERVATIONS AND RADAR CELL MOVEMENT BELIEVE THAT APEX OF TROPICAL WAVE IS JUST INLAND WITH SHOWERS OVER THE GULF MOVING NORTHERLY AND SHOWERS OVER BROOKS COUNTY MOVING SOUTHWESTERLY. ITS FAIRLY MOIST OUT THERE AS WELL WITH 00Z BRO SOUNDING REVEALING A PWAT OF 2.58 INCHES. GOES SOUNDER PRECIPITABLE WATER ALSO DEPICTS 2.6 INCH PWAT IN THE COASTAL WATERS UP TOWARDS CORPUS CHRISTI. 500 MB SHEAR LINE DRAPED ACROSS THE AREA WITH SOME WEAK DIFFLUENCE DRAPED ACROSS THE AREA AS WELL. AS OF THIS WRITING...BEST SURFACE CONVERGENCE LIES ACROSS THE NORTHERN SECTIONS OF THE AREA /BROOKS AND KENEDY/ AND OVER THE COASTAL WATERS WITH TYPICAL STREAMER ACTIVITY INCREASING. WITH THE AMOUNT OF MOISTURE CURRENTLY...WONT TAKE MUCH TO GET SHOWERS GOING WITH AN INCREASE IN COVERAGE EXPECTED AS TIME GOES ON TODAY. WAVE IS PROGGED TO MOVE WESTWARD AND BE LOCATED TO THE WEST OF THE AREA BY TUESDAY NIGHT. PWATS WILL SLOWLY FALL ON THE EAST SIDE OF THE WAVE BUT NOT BY MUCH /2 INCHES BY WEDNESDAY MORNING/. LIKELY POPS LOOK GOOD FOR TODAY DESPITE MOST MOS POPS ARE WELL BELOW OUR FORECAST. COMBINATION OF AFOREMENTIONED ELEMENTS AND HIGH PWATS LEADS ME TO BELIEVE TO STAY THE COURSE WITH SCATTERED TO NUMEROUS SHOWERS AND STORMS TODAY AND NOT ROLL BACK POPS. FOR TONIGHT BEST CHANCE FOR POPS WILL BE OUT WEST EARLY THEN BACK OVER THE COASTAL WATERS LATE. ONE OR TWO SHOWERS MAY MAKE IT ONSHORE IN THE OVERNIGHT HOURS. SEA BREEZE ACTIVITY EXPECTED FOR WEDNESDAY FROM EAST TO WEST THROUGH THE DAY. WITH EXPECTED CLOUD COVER AND SCATTERED/NUMEROUS SHOWERS ..TEMPERATURES WILL BE HELD DOWN SOMEWHAT /UNDER MOST IF NOT ALL MOS GUIDANCE/. USED PREVIOUS DAYS HIGHS AS A GUIDE AND HAVE MID TO UPPER 80S EVERYWHERE...A LITTLE HIGHER OUT WEST WHERE SUN MAY BREAK THROUGH CLOUD CANOPY. CLOUDS WONT BE AS ABUNDANT ON WEDNESDAY SO EXPECT HIGHS A FEW DEGREES WARMER /AROUND 90 EAST TO MIDDLE 90S WEST/. CONCERNING AMOUNTS...GENERALLY SPEAKING ONE HALF INCH UPWARD TO ONE INCH OF RAIN IS POSSIBLE TODAY WITH LOCALLY HIGHER AMOUNTS. RAISED AMOUNTS SOMEWHAT AS MOST MODELS DOWNPLAYING AMOUNTS BASED ON LOWER POP CHANCES. BASED ON RECENT HEAVY RAINFALL AMOUNTS ACROSS PORTIONS OF HIDALGO AND CAMERON COUNTIES /WITH STREETS AND INTERSECTIONS BEING CLOSED FROM TIME TO TIME AND SOIL MOISTURE MAXIMIZED LEADING TO MOSTLY RUNOFF TODAY AND WITHIN URBAN AREAS/...ISSUED A FLASH FLOOD WATCH FOR THESE TWO COUNTIES FROM 6 AM TO 7 PM. LONG TERM...RESIDUAL LOW PRESSURE TROUGHING ALONG THE NORTHEAST MEXICAN COAST WILL KEEP LINGERING SHOWERS OVER COASTAL AREAS WEDNESDAY NIGHT. MID TO UPPER LEVEL MOISTURE FROM THE REMNANTS OF ODILE OVER NORTHWEST MEXICO WILL FIND ITS WAY EAST TO CENTRAL AND NORTH TEXAS UNDER ROCKY MOUNTAIN RIDGING...AND WILL ENHANCE RAIN CHANCES DEVELOPING ALONG A FRONT MOVING SOUTH TOWARD THE NORTH GULF COAST. THE FRONT LOOKS LIKE IT WILL SLOW UPON REACHING THE GULF...AND LOCAL RAIN CHANCES WILL EASE...BUT NOT END COMPLETELY. UNSETTLED WEATHER WILL BE WITH US FOR MUCH OF THE WEEK. MOST OF IT APPEARS THAT IT WILL BE FOCUSED OVER THE GULF FOR NOW. AS THE REMNANTS OF ODILE GET PICKED UP BY A SHORT WAVE TROUGH MOVING EAST AND SOUTHEAST OUT OF CANADA INTO THE UPPER MIDWEST LATE IN THE WEEK...MARITIME POLAR AIR WILL CHASE SOUTHEAST INTO THE SOUTHERN PLAINS...PROPELLING A FRONT INTO TEXAS SATURDAY INTO SUNDAY. THAT FRONT WILL MAKE ITS WAY INTO SOUTH TEXAS LATE SUNDAY...CREATING A TRIFECTA OF SORTS BY BLENDING IN WITH AN OLD FRONTAL BOUNDARY AND EVENTUALLY TAKING ADVANTAGE OF A WAVE MOVING ACROSS THE BAY OF CAMPECHE...BUT THAT WILL BE JUST AFTER MONDAY. IN THE MEANTIME... RAIN CHANCES SHOULD INCREASE SUNDAY INTO MONDAY. AVERAGE TEMPS ARE EDGING SLOWLY DOWN JUST A BIT...JUST A DEGREE OR TWO...AS SEPTEMBER PROGRESSES...AND FCST VALUES WILL TEND TO FOLLOW SUIT...BUT WILL STILL RUN A FEW DEGREES ABV NORMAL. CLOUD COVER WILL WEIGH IN AT PARTLY CLOUDY OR MORE MOST OF THE WEEK...WITH LIGHT TO MDT SOUTHEAST WINDS DETERMINED PRIMARILY BY THE SYNOPTIC PATTERN... UNTIL LATE NEXT WEEKEND WHEN WINDS MORE TO THE EAST AHEAD OF A FRONT. MARINE... NOW THROUGH WEDNESDAY...SFC TROPICAL WAVE AND MID LEVEL LOW WILL BRING SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS THROUGH THE NEXT 36 HOURS. OTHERWISE...WINDS AND SEAS WILL REMAIN MODERATE... 10 TO 15 KNOTS AND SEAS 2-3 FEET. WEDNESDAY NIGHT THROUGH FRIDAY...SFC HIGH PRESSURE WILL GENERALLY BE IN CONTROL OVER THE GULF...SUPPORTED BY MID LEVEL RIDGING OVER THE WEST GULF AND BY A BUILDING RIDGE UPSTREAM OVER THE UPPER WEST. WEAK LOW PRESSURE TROUGHING WILL ALSO PERSIST ALONG THE NORTHEAST MEXICAN COAST. THUS...THE SYNOPTIC SITUATION WILL DICTATE LIGHT TO MODERATE SOUTHEAST WINDS AND MODERATE SEAS THROUGH THE LONG TERM. ISOLATED TO SCATTERED MARINE SHOWERS AND TSTMS WILL BE POSSIBLE THROUGH THURSDAY AS THE MARINE ENVIRONMENT REMAINS UNSTABLE AND UNSETTLED...WITH THE REMNANTS OF ODILE MOVING FROM THE EASTERN PACIFIC INTO THE DESERT SOUTHWEST AND DISRUPTING THE MID LEVEL RIDGE...AS WELL AS PROVIDING SOME UPPER LEVEL MOISTURE. A FEW MORE STABLE PERIODS WILL OCCUR FRI AND INTO THE EARLY WEEKEND...BUT THE TROPICAL SHOWER MACHINE DOESN'T LOOK LIKE IT WILL COMPLETELY SHUT DOWN FOR NOW. && .BRO WATCHES/WARNINGS/ADVISORIES... TX...FLASH FLOOD WATCH THROUGH THIS EVENING FOR TXZ253-255. GM...NONE. && THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT: HTTP://WEATHER.GOV/RGV 55
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BROWNSVILLE TX 433 AM CDT TUE SEP 16 2014 TXZ248>257-170945- ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 433 AM CDT TUE SEP 16 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS. .DAY ONE...TODAY AND TONIGHT. A FLASH FLOOD WATCH HAS BEEN ISSUED FOR HIDALGO AND CAMERON COUNTIES THROUGH 7 PM THIS EVENING. EXPECTED HEAVY RAINFALL TODAY IN COMBINATION WITH RECENT HEAVY RAINFALL OVER THE PAST SEVERAL DAYS COULD LEAD TO WATER COVERING THE ROADWAYS IN FLOOD PRONED AREAS AND ARROYOS OVERTOPPING THEIR BANKS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO RELAY SIGNIFICANT WEATHER OR FLOODING TO THE NATIONAL WEATHER SERVICE. GMZ130-132-135-150-155-170-175-170945- 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- 433 AM CDT TUE SEP 16 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE GULF OF MEXICO AND THE LAGUNA MADRE. .DAY ONE...TODAY AND TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS TO PRODUCE HEAVY RAIN...GUSTY WINDS AND OCCASIONAL LIGHTNING STRIKES. ONE OR TWO WATER SPOUTS COULD ALSO DEVELOP. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. SCATTERED SHOWERS AND THUNDERSTORMS TUESDAY WILL PRODUCE BRIEF HEAVY RAIN GUSTY WINDS AND LIGHTNING STRIKES. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO RELAY SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
The Arroyo Roma was reportedly in minor flood (bank full) after slow moving thunderstorms likely produced sufficient runoff into the waterway near Roma during the late morning and early afternoon of September 16th. Rainfall amounts in the area were unknown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2014Every state in 2014This day in weather historyWarnings in Texas, September 2014
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: 544342.