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000
FXUS64 KBRO 261930
AFDBRO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
145 PM CST THU NOV 26 2009

.DISCUSSION...HIGH LEVEL CLOUDINESS WILL CONTINUE FOR THIS AFTERNOON
AND TONIGHT AHEAD OF A MINOR DISTURBANCE WHICH WILL MOVE THROUGH THE
AREA ON FRIDAY CAUSING A SLIGHT CHANCE FOR SHOWERS.  BRO SOUNDING
THIS MORNING SHOWED A PRECIP WATER OF .79 AND A K-INDEX OF 21.
TEMPERATURES WILL CONTINUE TO BE NEAR NORMAL THROUGH FRIDAY WITH A
LIGHT NORTHEAST WIND SWITCH TO SOUTHEAST ON FRIDAY.  THE WEEKEND
WILL BE WARM DAYS AND MILD NIGHTS AS HIGH PRESSURE MOVES EAST OVER
THE GULF AND A MODERATE TO STRONG SOUTHEAST FLOW OF AIR PERSIST.  A
STRONG COLD FRONT WILL MOVE THROUGH THE AREA ON MONDAY CAUSING
COOLER TEMPERATURES AND GUSTY NORTH WINDS IN ITS WAKE.  SCATTERED
SHOWERS OR THUNDERSTORMS ARE ALSO POSSIBLE ON MONDAY.  SHOWERS AND
LIGHT RAIN WILL PERSIST ON TUESDAY WITH A CONTINUED MODERATE NORTH
WIND. AN OVERRUNNING TYPE SITUATION ON TUESDAY WILL CAUSE HIGH
TEMPERATURES TO REMAIN IN THE 50S. THE GFS HAS TOO HIGH OF
TEMPERATURES ON TUESDAY AS IT DOES NOT TYPICALLY TAKE IN
CONSIDERATION TRAPPED COLD AIR AT THE SURFACE DURING OVERRUNNING
SITUATIONS. A DRIER AND MORE STABLE AIRMASS WILL BE THE RULE BY
WEDNESDAY OF NEXT WEEK THROUGH THE END OF THE  WEEK.  TEMPERATURES
WILL WARM TO NEAR NORMAL READING BY THE END OF NEXT WEEK.
&&

.MARINE...AT NOON BUOY 20 REPORTED NORTHWEST WINDS AT 19 KNOTS WITH
GUSTS TO 23 KNOTS AND SEAS AT 5 FEET WITH A 7 SECOND PERIOD. A HIGH
PRESSURE RIDGE EXTENDING ACROSS THE MARINE AREAS IS PRODUCING
MODERATE NORTH TO NORTH EAST WINDS AND LOW TO MODERATE SEAS ACROSS
THE COASTAL WATERS. THE WINDS WILL BECOME SOUTHEASTERLY BY SATURDAY
REMAINING LIGHT TO MODERATE. THE WINDS AND SEAS WILL INCREASE ON
SUNDAY IN ADVANCE OF A COLD FRONT WHICH WILL MOVE THROUGH THE MARINE
AREAS ON MONDAY. THERE IS A CHANCE FOR SHOWERS AND ISOLATED
THUNDERSTORMS MOVING THROUGH PORTIONS OF THE MARINE AREAS ON MONDAY
ASSOCIATED WITH THE FRONT. ONCE THE FRONT PASSES THE WINDS WILL
SHIFT TO THE NORTH. THE WINDS AND SEAS WILL INCREASE SUNDAY
AFTERNOON AND SMALL CRAFT ADVISORIES ARE LIKELY SUNDAY EVENING
THROUGH TUESDAY MORNING.
&&

.AVIATION...VFR CONDITIONS AND LIGHT NORTHERLY WINDS ARE BEING
REPORTED AT THE REGIONAL AIRPORTS. THE WINDS WILL BECOME LIGHT AND
VARIABLE TO CALM OVERNIGHT THEN LIGHT TO MODERATE FROM THE NORTHEAST
TO EAST ON FRIDAY WITH PARTLY CLOUDY SKIES. VFR CONDITIONS WILL
CONTINUE ACROSS THE REGIONAL AIRPORTS DURING THE NEXT 24 HOURS.
&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  56  72  62  79 /   0  20  10   0
BROWNSVILLE          54  75  60  81 /   0  20  10   0
HARLINGEN            52  72  60  81 /   0  20  10   0
MCALLEN              53  73  59  83 /   0  20  10   0
RIO GRANDE CITY      51  71  53  80 /   0  20  10   0
SOUTH PADRE ISLAND   59  71  58  79 /   0  20  10   0
&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.
&&

$$

THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
HTTP://WWW.WEATHER.GOV/BROWNSVILLE

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