6 tornado, 3 flash flood, 1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it; 3 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 9, 1:10 PM CST, 1 hour 40 minutes earlier.
DEEP SOUTH TEXAS FORECAST DISCUSSION...CORRECTED CCF NATIONAL WEATHER SERVICE BROWNSVILLE TX 210 PM CDT SUN SEP 9 2001 CURRENT VISIBLE SATELLITE LOOP IS SHOWING A THIN LINE OF WELL DEVELOPED CUMULUS/TOWERING CU EXTENDING FROM JUST NORTH OF CORPUS CHRISTI TO NEAR DEL RIO AT 09/1800Z. IT IS DIFFICULT...AT THIS TIME...TO DETERMINE WHETHER OR NOT THE LOW-LEVEL BOUNDARY FORCING THE CU DEVELOPMENT IS AN OUTFLOW BOUNDARY OR THE TRUE SYNOPTIC COLD FRONT. ARCING NATURE OF THE CU LINE...AND LACK OF A DEWPOINT GRADIENT PERPENDICULAR TO THE BOUNDARY WOULD ARGUE IN FAVOR OF OUTFLOW. LATEST MSAS ISALLOBARIC ANALYSIS INDICATES THAT STRONGEST 3-HOUR SURFACE PRESSURE RISES ARE CENTERED NEAR HOUSTON...WHICH EXPLAINS THE FASTER SOUTHWARD PROPAGATION OF THE EASTERN PORTION OF THIS LINE. THE MID-LEVEL CYCLONIC CIRCULATION SEEN ON WV IMAGERY SOUTH OF THE BIG BEND SHOULD CONTINUE MOVING NORTH AND WILL LIKELY NOT HAVE A SIGNIFICANT IMPACT ON WEATHER IN SOUTH TEXAS. KBRO REFLECTIVITY DATA CURRENTLY SHOWS NUMEROUS SHOWERS AND THUNDERSTORMS ORGANIZING ALONG THE BOUNDARY...AND THESE WILL IMPACT DEEP SOUTH TEXAS LATER THIS AFTERNOON AND THIS EVENING. OVERALL...AM NOT COMPLETELY SURE THAT THE HEAVY RAIN EVENT SCHEDULED FOR MONDAY WILL MATERIALIZE AS PLANNED. BOTH 09/12Z AVN AND 09/12Z MESOETA ARE IN GOOD AGREEMENT...SO WILL GO WITH A BLEND FOR THIS FORECAST. SEVERAL THINGS CONCERN ME AT THIS POINT...THE MOST OF WHICH IS THE MID/UPPER LEVEL RIDGING AND SUBSIDENCE THAT IS PROGGED TO BUILD BACK OVER THE AREA BEGINNING EARLY MONDAY. BOTH MODELS SHOW DECENT 700 MB POSITIVE VERTICAL MOTION...BUT THERE ARE NO UPPER LEVEL FEATURES TO SUPPORT THIS. THE SOURCE OF LIFT MUST THEREFORE COME FROM THE LOW-LEVEL BOUNDARY/COLD FRONT...WHICH MAY NOT EVEN MAKE IT THIS FAR SOUTH...BASED ON CURRENT SURFACE PRESSURE TRENDS. MOS NUMBERS STILL INDICATE HIGH POPS...BUT THESE ARE LIKELY BEING INFLUENCED SUBSTANTIALLY BY THE CLIMATOLOGY COMPONENT OF THE PREDICTION EQUATION. EITHER WAY...THE BEST CHANCES FOR RAIN SHOULD BE LIMITED TO MONDAY. THUS...WILL LIMIT ALL POPS TO 40 THROUGH MONDAY NIGHT...AND BEGIN A DECREASING TREND AFTER MONDAY NIGHT...AS COLD FRONT REALLY BEGINS TO DISSIPATE. IN THE EXTENDED PERIOD OF THURSDAY THROUGH MONDAY...MODEL GUIDANCE IS POINTING TOWARD A RETURN TO MID/UPPER LEVEL RIDGING AND A MUCH DRIER TROPOSPHERE OVER THE AREA. A RETURN TO WARM TEMPS...MOSTLY SUNNY DAYS...AND MOSTLY CLEAR NIGHTS CAN BE EXPECTED. MARINE...SOUTHEAST WINDS HAVE DECREASED TO 8 KNOTS AT BUOY 020...WITH SEAS RESPONDING BY DECREASING TO 5 FEET. A SPECIAL MARINE WARNING CONTINUES UNTIL 3:15 PM CDT...FOR A LINE OF STRONG THUNDERSTORMS MOVING DOWN THE LOWER TEXAS COAST. SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH EARLY WEDNESDAY. PRELIMINARY NUMBERS: BRO TB 079/091 077/093 077 40/40/40/30/30 HRL TB 077/091 075/093 075 40/40/40/30/30 MFE TB 077/092 075/094 075 40/40/40/30/30 RGC TB 076/092 074/094 074 40/40/40/30/30 SPI TB 078/088 076/089 076 40/40/40/30/30 SYNOPTIC...DD (65) / AVIATION-MARINE...BHM (54) / MESO...SM INTERNET ADDRESS...WWW.SRH.NOAA.GOV/BRO .BRO...SCA GMZ150-155-170-175.
The Corpus Christi radar (KCRP), 96 km away, was scanning. The volume nearest the first event began at 21:50 UTC.
6 tornado, 3 flash flood, 1 thunderstorm wind. Local standard time, as filed.
A wind gust of 56 knots (65 mph) was estimated by Border Patrol officials located at the Border Patrol checkpoint on U.S. Highway 77, 10 miles south of Sarita.
A weak tornado was reported by the Willacy County Sheriff's Department at the intersection of FM 490 and FM 1425, or about four miles southwest of Raymondville.
A weak tornado near LaVilla was reported by a local television meteorologist.
Several weak landspout-type tornadoes formed along the leading of a stationary front. The tornadoes were weak, small, and short-lived, with none lasting more than five minutes. This tornado resulted in a tree falling on a home.
Several weak landspout-type tornadoes formed along the leading of a stationary front. The tornadoes were weak, small, and short-lived, with none lasting more than five minutes.
Several weak landspout-type tornadoes formed along the leading of a stationary front. The tornadoes were weak, small, and short-lived, with none lasting more than five minutes.
Several weak landspout-type tornadoes formed along the leading of a stationary front. The tornadoes were weak, small, and short-lived, with none lasting more than five minutes. This particular tornado was reported by an off-duty NWS forecaster.
The Willacy County Sheriff's Department reported widespread flooding in the town of La Sara. High water was also reported to be covering portions of FM 490, FM 1015, and FM 88, as well as State Highway 186.
The Hidalgo County Sheriff's Department reported that portions of U.S. Highway 83 near McAllen were under water. Widespread flooding was also reported in the town of Pharr.
Widespread street flooding was reported around Harlingen by an off-duty NWS forecaster. The most significant flooding was occurring along portions of U.S. Highway 77 and associated access roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2001Every state in 2001This day in weather historyThe tornado archive for Texas, 2001Warnings in Texas, September 2001
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: 5268382, 5268472, 5268755, 5268385, 5268384, 5268383, 5268386, 5268473, 5268753, 5268754.