Flash Flood Warning 90, NWS Brownsville, TX

000 
WGUS74 KBRO 170245
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
943 PM CDT MON JUL 16 2007

TXC215-170315-
HIDALGO TX-
943 PM CDT MON JUL 16 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
CENTRAL HIDALGO COUNTY...

AT 938 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING AREA INCLUDE SAN MANUEL...SAN JUAN...PHARR
...MISSION...MCALLEN...HIDALGO...EDINBURG...ALAMO...DONNA...PALMVIEW
...AND MCCOOK. 

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
BROWNSVILLE.

LAT...LON 2601 9838 2600 9807 2678 9806 2678 9838

$$

TOMASELLI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
826 PM CDT MON JUL 16 2007

.DISCUSSION...CONVECTION CONTINUES TO INITIATE THIS EVENING OVER WRN
ZONES AS UPPER LEVEL LOW PROVIDES SUFFICIENT INSTABILITY/LIFT SO
WILL MAINTAIN LOW END CHC POPS OVERNIGHT. SLOW STORM MTN CREATES
POTENTIAL FOR FLASH FLOODING AND A FLASH FLOOD WATCH REMAINS IN
EFFECT THROUGH TUESDAY EVENING FOR ENTIRE CWA. SHORT WAVE EVIDENT ON
SATELLITE IMAGERY CURRENTLY MVG INTO S CTL TX THIS EVENING WILL
APPROACH CWA AROUND SUNRISE TUE AND LIKELY POPS IN FCST TUE REMAIN
WARRANTED. RAIN CHANCES WILL LOWER BY THIS WEEKEND AS UPPER LEVEL
LOW SHIFTS FURTHER INLAND. CURRENT FCST ON TRACK WITH NO UPDATES
PLANNED THIS EVENING.
&&

.MARINE...BUOY 42020 REPORTED EAST-SOUTHEAST WINDS NEAR 14 KNOTS
GUSTING TO NEAR 16 KNOTS WITH SEAS SLIGHTLY UNDER 5 FEET WITH A
PERIOD OF 6 SECONDS AT 19 CDT/24 UTC. MODERATE WINDS AND SEAS WILL
CONTINUE TO PREVAIL ALONG THE LOWER TEXAS COAST THROUGH THE NEXT
SEVERAL DAYS. A LOW PRESSURE SYSTEM IN THE MIDDLE LAYERS OF THE
ATMOSPHERE WILL LIKELY PRODUCE SOME SHOWERS AND THUNDERSTORMS OVER
THE ADJACENT COASTAL WATERS OF DEEP SOUTH TEXAS DURING THE FORECAST
PERIOD.
&&

.AVIATION...SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL BE
THE MAIN AVIATION HAZARD THROUGH THE NEXT 24 HOURS. HOWEVER...EXPECT
VFR CONDITIONS WITH LIGHT TO MODERATE WINDS AND MOSTLY CLOUDY SKIES
AWAY FROM ANY RAIN ACTIVITY.
&&

.PREV DISCUSSION...ISSUED AT 120 PM CDT MON JUL 16 2007...A FLASH
FLOOD WATCH CONTINUES ACROSS THE RIO GRANDE VALLEY THROUGH THIS
EVENING. AN UPPER LEVEL LOW PRESSURE SYSTEM AND TROUGH WHICH IS
LOCATED OVER THE WESTERN GULF OF MEXICO WILL MAINTAIN A CHANCE FOR
SHOWERS AND ISOLATED THUNDERSTORMS MOVING ACROSS PORTIONS OF THE CWA
AT TIMES THROUGH THE MIDDLE OF THIS WEEK. LOCALIZED HEAVY RAINFALL
OCCURRED OVER PORTIONS OF THE CWA LAST NIGHT AND THIS MORNING. THE
SHOWER ACTIVITY HAS BEEN ABSENT SINCE MID MORNING OVER DEEP SOUTH
TEXAS. THE SHOWERS AND THUNDERSTORMS CONTINUE OVER PORTIONS OF THE
GULF COASTAL WATERS. THE FLASH FLOOD WATCH IS LIKELY TO BE EXTENDED
INTO TUESDAY OVER ALL OF DEEP SOUTH TEXAS.

THE WINDS WILL REMAIN LIGHT TO LIGHT AND VARIABLE DURING THE
OVERNIGHT PERIODS AND LIGHT TO MODERATE DURING THE AFTERNOONS AND
EARLY EVENINGS FROM THE SOUTHEAST THROUGH THE MIDDLE OF NEXT WEEK AS
A HIGH PRESSURE RIDGE PERSISTS ACROSS THE NORTHERN GULF OF MEXICO.

ANY SHOWERS OR THUNDERSTORMS MAY PRODUCE FREQUENT LIGHTNING, GUSTY
WINDS AND LOCALIZED HEAVY RAINFALL. HEAVY RAINFALL MAY PRODUCE FLASH
FLOODING OF SMALL STREAMS, CREEKS, ARROYOS AND OTHER LOW LYING AREAS
AS WELL AS STREET FLOODING. MOTORISTS SHOULD EXERCISE CAUTION WHEN
DRIVING THROUGH AREAS EXPERIENCING LOCALIZED HEAVY RAINFALL. TURN
AROUND DONT DROWN.
&&

.BRO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH TXZ248>257 THROUGH TUESDAY EVENING.
&&

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

55/66

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BROWNSVILLE TX
327 PM CDT MON JUL 16 2007

TXZ248>257-171100-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
327 PM CDT MON JUL 16 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...REST OF TODAY AND TONIGHT.

A FLASH FLOOD WATCH IS IN EFFECT FOR ALL OF THE RIO GRANDE VALLEY
THROUGH TUESDAY NIGHT. AN UPPER LEVEL LOW OVER THE WESTERN GULF
COMBINED WITH COPIOUS AMOUNTS OF MOISTURE IN THE ATMOSPHERE...WILL
INDUCE THUNDERSTORM DEVELOPMENT WITH HEAVY RAINFALL BY THROUGH THE
EVENING. IF YOU ENCOUNTER WATERS OF UNKNOWN DEPTH WHILE
DRIVING...TURN AROUND...DONT DROWN. ALSO...FACTOR IN THE LIKELIHOOD
OF PONDED ROADWAYS WHILE DRIVING AND SLOW DOWN. ALWAYS DRIVE
DEFENSIVELY DURING HAZARDOUS WEATHER.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE UPPER LEVEL LOW AND TROPICAL MOISTURE WILL REMAIN OVER THE
REGION AND A FLASH FLOOD WATCH IS IN EFFECT THROUGH TUESDAY EVENING.
THE THREAT OF LOCALLY HEAVY RAINS WILL CONTINUE ACROSS MOST OF DEEP
SOUTH TEXAS THROUGH THE MIDDLE OF THE WEEK. ALONG WITH THE HEAVY
RAIN POTENTIAL...ISOLATED STRONG TO SEVERE THUNDERSTORMS WILL BE
POSSIBLE OVER OUR REGION TUESDAY AND WEDNESDAY...WITH A TROPICAL
AIRMASS AND THE CHANCE FOR HEAVY RAINS CONTINUING THROUGH SUNDAY.
ALSO...A MODERATE RISK OF RIP CURRENTS IS POSSIBLE EACH DAY AT LOCAL
BEACHES WITH MARINE WARNING POSSIBLE AS STRONG THUNDERSTORMS MOVE
OVER OUR GULF WATERS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TODAY THROUGH
WEDNESDAY...AND POSSIBLY BEYOND THIS PERIOD.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
359 PM CDT MON JUL 16 2007

TXZ248-162130-
ZAPATA TX-
359 PM CDT MON JUL 16 2007

...STRONG THUNDERSTORMS CONTINUE TO AFFECT PORTIONS OF ZAPATA
COUNTY...

AT 358 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
TRACKING STRONG THUNDERSTORMS OVER CENTRAL ZAPATA COUNTY MOVING
NORTH AT 10 MPH.

SMALL HAIL AND GUSTY WINDS 40 TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

BC