Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 17, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood warning at Sep 4, 2001, 7:20 PM CDT for Hidalgo County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Sep 4, 2001, 7:20 PM CDT (00:20 UTC)
- Expired
- Sep 4, 2001, 10:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Hidalgo County, TX
The radar
The Brownsville radar (KBRO), 109 km from the middle of the area, began a volume at 00:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 00:00Z, 0.3 hours before the alert went out and 112 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2105 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KBRO 050020 FFWBRO FFWBRO TXC215-050300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 720 PM CDT TUE SEP 4 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN HIDALGO COUNTY IN DEEP SOUTH TEXAS * UNTIL 1000 PM CDT * AT 715 PM CDT...HEAVY RAINFALL FROM THUNDERSTORMS THAT MOVED THROUGH EASTERN PORTIONS OF STARR COUNTY...INTO WESTERN PORTIONS OF HIDALGO COUNTY EARLIER THIS AFTERNOON...CONTINUES TO RUNOFF POSING A THREAT OF FLASH FLOODING OVER EXTREME SOUTHWESTERN HIDALGO COUNTY...INCLUDING THE TOWNS OF LA JOYA AND HAVANA. SOME OF THIS RUNOFF WILL ALSO FLOW INTO LAKE LA JOYA WHICH COULD AGGRAVATE FLOODING PROBLEMS IN THE CITY OF LA JOYA. IN ADDITION...RUNOFF INTO THE STREAMS AND TRIBUTARIES WILL CAUSE FLOODING OF SOME COUNTY ROADS. THE RED CROSS HAS OPENED A SHELTER AT LA JOYA HIGH SCHOOL. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 2643 9847 2629 9856 2613 9823 2648 9826 CASTILLO
What forecasters said that day
The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Sep 4, 4:05 PM CDT, 3 hours 15 minutes earlier.
Area forecast discussion, Sep 4, 4:05 PM CDT, 3 hours 15 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION...AMENDMENT TO CCF NATIONAL WEATHER SERVICE BROWNSVILLE TX 405 PM CDT TUE SEP 4 2001 SHORT TERM...CONVECTION DEVELOPING ALONG OUTFLOW BOUNDARY OVER NORTHWEST PORTIONS OF DEEP SOUTH TEXAS THIS AFTERNOON. WATER VAPOR IMAGES AND RUC GUIDANCE CONTINUES TO INDICATE VORT MAX MOVING DOWN THE RIO GRANDE INTO WESTERN PORTIONS OF THE CWA. UNSTABLE LIFTING INDEXES AND CAPE VALUES INDICATE POTENTIAL FOR ADDITIONAL DEVELOPMENT AS LINE OF CONVECTION CONTINUES TO DEVELOP THIS AFTERNOON. IN ADDITION...LEFT ENTRANCE OF UPPER LEVEL JET OVER SOUTHWEST UNITED STATES PROVIDING SOME DIFFLUENCE ALOFT. SOME DIRECTIONAL SHEAR AND VEERING WITH HEIGHT EVEN THOUGH 700MB WINDS A LITTLE OUT OF PHASE. DRIER AIR AT 700MB TO PROVIDE MARGINAL WIND AND HAIL THREAT. GREATEST THREAT REMAINS HEAVY RAINFALL AND FLOODING POTENTIAL WITH SLOW MOVEMENT OF CONVECTION. WILL EXTEND FLASH FLOOD WATCH FOR ENTIRE CWA. UPPER LEVEL LOW OVER NORTH TEXAS TO MOVE LITTLE WEDNESDAY AND OPENS UP AS SHORT WAVE THURSDAY. BELIEVE GREATEST THREAT OF WIDESPREAD RAIN TONIGHT INTO WEDNESDAY MORNING...WITH A DECREASING CHANCE OF SHOWERS AND TSTMS THURSDAY AS DRYING IN THE MID TO UPPER LEVELS MOVES INTO DEEP SOUTH TX. EXTENDED...A CHANGE IN THE PATTERN AS UPPER LOW/TROUGH DROPS INTO THE CENTRAL ROCKY MOUNTAINS FRIDAY NORTH OF FOUR CORNERS REGION. SURFACE LOW PRESSURE TO DEVELOP OVER WEST TEXAS WITH PRESSURE GRADIENT INCREASING OVER SOUTH TX SATURDAY. BULK OF PRECIP TO BE FAR TO THE NORTH WHERE DYNAMICS LOCATED WITH UPPER LOW POISED JUST NORTHWEST OF TX PANHANDLE SUNDAY. LACK OF A SURFACE BOUNDARY FOR CONVERGENCE WILL LIMIT RAIN CHANCES THROUGH THE PERIOD. MARINE...SEAS 3 FEET OFFSHORE WITH SOUTH WINDS NEAR 15 KNOTS. NO CONVECTION OFFSHORE BUT LINE OF CONVECTION REACHING NORTHEAST PORTIONS OF DEEP SOUTH TX TO REACH NORTHERN PORTIONS OF COASTAL WATERS LATER THIS AFTERNOON. CONVECTIVE TRENDS SHOULD DIMINISH AS THE UPPER LOW OVER TX LIFTS OUT AND A TROUGH MOVES INTO THE FOUR CORNERS REGION OF THE U.S. TOWARDS THE END OF THE WEEK. LOW PRESSURE DEVELOPING OVER WEST TEXAS WILL INCREASE THE PRESSURE GRADIENT OVER THE LOWER TX COAST FRIDAY. PRELIMINARY NUMBERS... BRO TB 077/094 076/094 077 65432 HRL TB 076/095 075/095 076 65432 MFE TB 077/096 076/096 077 65432 RGC TB 076/098 075/098 076 65432 SPI TB 078/088 077/088 078 65432 AVIATION-MARINE-MESO...YURA.69/SYNOPTIC-PUBLIC...CASTILLO.61 MESO...MCGUIRE.55 SWC...CAMPBELL .BRO...FFA TXZ248>257.
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.