Flash Flood Warning 53, NWS Brownsville, TX

000 
WGUS74 KBRO 032104
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
400 PM CDT TUE JUL 3 2007

TXC061-215-489-032130-
HIDALGO TX-WILLACY TX-CAMERON TX-
400 PM CDT TUE JUL 3 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHWESTERN CAMERON...WILLACY AND HIDALGO COUNTIES...

AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN MANUEL...
RAYMONDVILLE...PORT MANSFIELD...MCCOOK AND LYFORD.

NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES THAT 4 TO 5 INCHES 
OF RAINFALL HAS OCCURRED IN THE VICINITY OF PORT MANSFIELD. RAINFALL 
AMOUNTS OF 1 TO 3 INCHES WITH ISOLATED AREAS OF 4 TO 6 INCHES ARE 
LIKELY IN OTHER PORTIONS OF THE RIO GRANDE VALLEY THIS AFTERNOON AND
EVENING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 2587 9844 2637 9722 2659 9728 2659 9844

$$

TOMASELLI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
205 PM CDT TUE JUL 3 2007

.DISCUSSION...BUSY SHIFT AND RUNNING OUT OF TIME FOR MUCH DISCUSSION.

CONVECTION CONTINUES TO DEVELOP AS WELL AS BUILD SOUTHWEST. UPPER
DIFFLUENCE BETWEEN UPPER LOW OVER CENTRAL TEXAS AND UPPER HIGH
ACROSS GULF OF MEXICO COMBINING WITH LOW LEVEL CONVERGENCE SHOULD
CONTINUE TO ENHANCE CONVECTION FOR THE NEXT SEVERAL HOURS.
EXPECTING THUNDERSTORMS TO SPREAD AND DEVELOP FROM THE NORTHEAST
THROUGH THE SOUTHWEST COVERING MUCH OF THE CWA BY LATE AFTERNOON
INTO THE EVENING HOURS. LIKELY POPS PAINTED ACROSS ALL ZONES WITH
A FLASH FLOOD WATCH IN EFFECT UNTIL 1 AM TONIGHT. SAME SET UP IS
INDICATED FOR WEDNESDAY WITH THE CENTER OF THE UPPER LOW NEARING
DEL RIO. ANOTHER ROUND OF CONVECTION WITH HEAVY RAIN IS LIKELY FOR
ALL AREAS WITH THE FFW LIKELY TO BE EXTENDED. THE WIDESPREAD
CONVECTION COULD LINGER INTO WEDNESDAY NIGHT ESPECIALLY OUT WEST.
SCATTERED ACTIVITY IS THEN ANTICIPATED FOR THURSDAY A THE MODELS
CONTINUES TO DRIFT THE UPPER LOW FARTHER WEST.

&&

.AVIATION...THUNDERSTORMS ARE EXPECTED TO SPREAD AND DEVELOP OVER
MUCH OF SOUTH TEXAS AND THE LOCAL AERODROMES THE REMAINDER OF THE
AFTERNOON AND THIS EVENING. MVFR TO LOCALIZED IFR CONDITIONS
SHOULD FOLLOW THE CONVECTION. AS CONVECTION TAPERS OVERNIGHT VFR
CONDITIONS SHOULD BE THE PREDOMINATE CONDITIONS WITH PATCHES OF
MVFR AND IFR CEILING WITHIN LINGERING CONVECTION.

&&

.MARINE...AT NOON BUOY 20 REPORTED SOUTHEAST WINDS AT 12 KNOTS
WITH GUSTS TO 16 KNOTS AND SEAS NEAR 4 FEET WITH A 7 SECOND
PERIOD. THUNDERSTORMS ARE EXPECTED TO SPREAD ACROSS THE ALL
COASTAL WATERS THE REMAINDER OF THE AFTERNOON AND THIS EVENING.
ROUGH SEAS AND STRONG WINDS ARE EXPECTED WITHIN THE THUNDERSTORMS.
THUNDERSTORMS ARE EXPECTED TO WIDESPREAD ON WEDNESDAY WITH A GOOD
POSSIBILITY OF THE MAJORITY OF THEM OCCURRING IN THE MORNING.
OTHERWISE...A MODERATE SOUTHEAST FLOW AND SEAS SHOULD CONTINUE
THROUGH WEDNESDAY WITH A SLIGHT INCREASE ANTICIPATED ON THURSDAY.
LOWER WINDS AND SUBSIDING SEAS ANTICIPATED FRIDAY AND OVER THE
WEEKEND AS LOW PRESSURE OVER TEXAS MOVES EAST AND HIGH PRESSURE
BUILDS OVER THE WESTERN GULF.

&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  79  88  79  88 /  70  70  30  30
BROWNSVILLE          79  90  78  91 /  70  70  30  40
HARLINGEN            77  90  77  90 /  70  70  30  40
MCALLEN              77  92  77  91 /  70  70  50  40
RIO GRANDE CITY      77  91  77  92 /  70  70  70  60
SOUTH PADRE ISLAND   81  88  81  88 /  70  70  30  30

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 1 AM CDT WEDNESDAY FOR TXZ248>257.

&&

THIS PRODUCT IS ALSO AVAILABLE ON OUR INTERNET WEB PAGE AT:
HTTP://WWW.SRH.NOAA.GOV/BRO

59/55

HAZARDOUS WEATHER OUTLOOK...RETRAN
NATIONAL WEATHER SERVICE BROWNSVILLE TX
541 AM CDT TUE JUL 3 2007

TXZ248>257-041100-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
541 AM CDT TUE JUL 3 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED OVER
MUCH OF DEEP SOUTH TEXAS TODAY. SOME STORMS WILL PRODUCE TORRENTIAL
RAINFALL RESULTING IN LIFE-THREATENING FLASH FLOODING. AS A
RESULT...A FLASH FLOOD WATCH IS IN EFFECT FOR ZAPATA...JIM HOGG
AND STARR COUNTIES TODAY. THIS DANGER IS PARTICULARLY SIGNIFICANT
OVER STARR COUNTY. PLEASE REFER TO THE LATEST FLASH FLOOD WATCH
STATEMENT FOR DETAILS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER PORTIONS OF DEEP SOUTH
TEXAS AT TIMES THROUGH WEDNESDAY. THE STRONGER STORMS WILL PRODUCE
HEAVY RAINFALL WITH LOCALIZED FLOODING POSSIBLE THROUGH THIS WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS AND EMERGENCY MANAGERS ARE URGED TO PAY CLOSE ATTENTION
TO THE LATEST WATCHES...WARNINGS AND ADVISORIES FROM THE NATIONAL
WEATHER SERVICE. SPOTTER ACTIVATION MAY BE NEEDED TODAY.

MARTIN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
328 PM CDT TUE JUL 3 2007

TXZ248>257-040030-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
INCLUDING THE CITIES OF...ZAPATA...HEBBRONVILLE...FALFURRIAS...
SARITA...RIO GRANDE CITY...ROMA...MCALLEN...EDINBURG...PHARR...
MISSION...WESLACO...RAYMONDVILLE...BROWNSVILLE...HARLINGEN...
PORT MANSFIELD...PORT ISABEL...SOUTH PADRE ISLAND...
LAGUNA HEIGHTS...LAGUNA VISTA
328 PM CDT TUE JUL 3 2007

...BRIEF FUNNEL CLOUDS POSSIBLE WITH APPROACHING THUNDERSTORMS...

COLLIDING BOUNDARIES ALONG AND AHEAD OF AN APPROACHING
THUNDERSTORM COMPLEX HAVE THE POTENTIAL TO PRODUCE FUNNEL
CLOUDS...WHICH MAY BRIEFLY REACH THE GROUND.

ATMOSPHERIC CONDITIONS ARE FAVORABLE FOR PRODUCTION OF FUNNEL
CLOUDS TODAY. MOST OF THESE SHOULD NOT REACH THE GROUND.
HOWEVER...IF ONE IS SPOTTED...BE PREPARED TO SEEK SHELTER IN AN
INTERIOR ROOM. DO NOT ATTEMPT TO OUTRUN ON IN A CAR.

JS