Sea breeze thunderstorms on the 20th produced torrential downpours in Raymondville resulting in flash flooding.
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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.
Sea breeze thunderstorms on the 20th produced torrential downpours in Raymondville resulting in flash 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 Aug 20, 1:35 PM CST, 3 hours 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 235 PM CDT MON AUG 20 2007 .DISCUSSION...THE 500 MB LOW OVER THE WESTERN GULF IS GETTING CLOSER TO THE TX COASTLINE THIS AFTERNOON AND THIS IS PRODUCING A PRETTY GOOD CONV COMPLEX ACROSS THE LOWER TX GULF WATERS WITH THIS ACTIVITY MOVING NORTH AT 15 TO 20 MPH. THIS LOW WILL PROGRESS STEADILY INLAND TONIGHT AND TUES INCREASING UVV AND DEEPER TROPICAL MOISTURE VALUES WHICH WILL DESTABILIZE THE ATMS AND INCREASE POPS THROUGH TUES. ONCE AGAIN THE GFS AND NAM BOTH SHOW CONTINUED DISAGREEMENTS FOR POPS AND TEMPS IN THE SHORT RANGE. WILL LEAN TOWARDS THE GFS NUMBERS AS THE NAM STILL PERSISTS IN TRACKING DEAN TOWARDS A CLOSER LANDFALL FURTHER NORTH ALONG THE GULF COAST OF MEXICO NEAR LA PESCA. THIS IS WELL NORTH OF THE OFFICIAL DEAN TRACK FROM NHC AND IS THE LONE OUTLIER IN COMPARISON TO THE MUCH MORE SOUTHWARD GFS/ECMWF/UKMET PLACEMENT OF DEAN. SO DO NOT HAVE MUCH CONFIDENCE IN THE NAM SOLUTION FOR DEAN. SO AFTER THE 500 MB LOW MOVES INLAND AND LOSSES ITS INFLUENCE OVER THE REGION...DEAN WILL BE EMERGING OUT INTO THE SOUTHWESTERN GULF LATE TUES. THE MAIN PROBLEM FROM DEAN ACROSS THE INLAND AREAS WILL BE CONV CHCS AND ANTICIPATED QPF AMOUNTS. DESPITE THE MORE SOUTHWARD PLACE OF THE DEAN LANDFALL...THE CONV THREAT WILL PERSIST OVER THE LOWER RGV INTO WED AND THURS AS SOME OF THE NORTHERNMOST CONV ASSOCIATED WITH THIS STORM WILL PUSH NORTH AND WEST ALONG THE MEXICAN COASTLINE. THIS ACTIVITY WILL LIKELY BE SPORADIC ENOUGH IN BOTH TEMPORAL AND AREAL COVERAGE TO LIMIT ANY SIGNIFICANT FLOODING POTENTIAL AT THIS TIME. AS ALWAYS HOWEVER...ANY NORTHWARD JOG IN THE FINAL PATH OF DEAN COULD INCREASE THE CONVECTIVE POTENTIAL AND THE ASSOCIATED QPF AMOUNTS. AT THIS TIME...NO FLASH FLOOD WATCH APPEARS NECESSARY AND WILL CONTINUE TO MENTION LOCALLY HVY RAINFALL WORDING IN THE ZFP. AFTER DEAN MOVES FURTHER WEST ACROSS CENTRAL MEXICO...THE BROAD AND STRONG 500 MB RIDGING THAT DOMINATED THE SOUTHEASTERN U.S. IS WEAKENED BY INCREASED NORTHERN STREAM TROFFING OVER THE NORTHERN CONUS REGION. MEANWHILE...TO THE SOUTH...A FAIRLY DECENT TROPICAL WAVE MOVING ALONG BEHIND DEAN WILL PUSH INTO THE SOUTHWESTERN GULF OF MEX ON SAT EVENTUALLY REACHING THE TX COASTLINE BY SUN. THIS WILL MAINTAIN POPS FOR DEEP SOUTH TX FOR THIS WEEKEND WITH TEMPS NEAR OR SLIGHTLY ABOVE CLIMO. && .AVIATION...GENERAL VFR CONDITIONS SHOULD PREVAIL WITH LIGHT TO MODERATE SOUTHEAST WINDS. ISOLD CONVECTION IS POSSIBLE THE REST OF THE AFTENROON AND OVERNIGHT ALONG THE IMMEDIATE COAST WITH A FEW POSSIBLY WORKING ACROSS THE LOWER RIO GRANDE VALLEY. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BE MORE SCATTERED ON TUESDAY WITH PERIODS OF MVFR CEILINGS AND VISIBILITIES. && .MARINE...AT 1 PM BUOY020 REPORTED SOUTHEAST WINDS AROUND 10 KTS WITH PERSISTENT SEAS AT 3 FT. LOW SEAS AND LIGHT TO MODERATE WINDS WILL CONTINUE ACROSS THE LOWER TEXAS COAST THROUGH TUESDAY. HURRICANE DEAN CONTINUES TO MAKE PROGRESS ON A NEARLY DUE WEST TRACK AND IS FORECAST TO MOVE ACROSS THE YUCATAN PENINSULA TUESDAY MORNING EMERGING ACROSS THE BAY OF CAMPECHE LATE AFTERNOON TUESDAY AND THEN HAVING A SECOND LAND FALL LATER WEDNESDAY SOUTH OF TAMPICO. LONG PERIOD SWELLS FROM DEAN ARE EXPECTED TO REACH THE LOWER TEXAS COASTAL WATERS TUESDAY NIGHT BUILDING TO ABOUT 12 FEET THROUGH WEDNESDAY AND PERSISTING INTO WEDNESDAY NIGHT. SMALL CRAFT ADVISORIES WILL BE LIKELY FOR SEAS AND POSSIBLY FOR WINDS IF A TROPICAL STORM WATCH OR WARNING IS NOT ISSUED...WHICH IS NOT ANTICIPATED AT THIS TIME. SEAS ARE FORECAST TO STEADILY SUBSIDE THURSDAY WITH DEAN WELL INLAND THURSDAY MORNING. A MORE RAPID DECREASE IS POSSIBLE DEPENDING ON THE FUTURE STRENGTH OF DEAN ONCE THE STORMS REEMERGES OVER THE WATER AND THE EXACT TRACK IT TAKES. THUS...LESS TIME OVER THE WATER COULD ALLOW FOR A LOWER SWELL TRAIN AND A SHORTER PERIOD OF HIGH SWELLS. MUCH IMPROVED MARINE CONDITIONS ARE EXPECTED FRIDAY AND NEXT WEEKEND. && .PRELIMINARY POINT TEMPS/POPS... BAYVIEW/PORT ISABEL 80 89 79 89 / 20 40 20 50 BROWNSVILLE 78 92 79 90 / 20 40 20 50 HARLINGEN 77 92 78 91 / 20 40 20 50 MCALLEN 77 95 78 93 / 20 40 20 50 RIO GRANDE CITY 76 97 78 95 / 20 30 20 50 SOUTH PADRE ISLAND 83 87 81 87 / 20 40 20 50 && .BRO WATCHES/WARNINGS/ADVISORIES...NONE. && SYNOPTIC/GRIDS...60 MARINE/AVIATION/MESO...59 FXC GRAPHICS...MARTINEZ THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT: HTTP://WWW.WEATHER.GOV/BROWNSVILLE THE GRAPHICAL NOWCAST WEB PAGE ALSO AVAILABLE AT: HTTP://WWW.WEATHER.GOV/BROWNSVILLE/FXC/FXC.HTM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BROWNSVILLE TX 501 AM CDT MON AUG 20 2007 TXZ248>257-211000- ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 501 AM CDT MON AUG 20 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY INCREASING SHOWERS AND THUNDERSTORMS...ALONG WITH INCREASED SWELLS AND A HIGH RISK OF RIP CURRENTS...ARE POSSIBLE WEDNESDAY THROUGH THURSDAY AS HURRICANE DEAN MOVES ACROSS THE BAY OF CAMPECHE INTO CENTRAL MEXICO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Brownsville radar (KBRO), 72 km away, was scanning. The volume nearest the first event began at 23:01 UTC.
1 flash flood. Local standard time, as filed.
Willacy county emergency manager reported 4 inches of floodwater on FM186 and 10th street in downtown Raymondville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2007Every state in 2007This day in weather historyWarnings in Texas, August 2007
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: 48139.