901
FXUS64 KBRO 041918
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
ISSUED BY NATIONAL WEATHER SERVICE LAKE CHARLES LA
218 PM CDT SAT JUL 4 2009
DISCUSSION
HOT AND DRY CONDITIONS PREVAIL ACROSS DEEP SOUTH TEXAS WITH HARDLY
ANY CLOUDS PROVIDING PLENTY OF SUNSHINE AND TRIPLE DIGIT AIR
TEMPERATURES ACROSS INLAND SECTIONS. WITH THE BREEZY SOUTHERLY
WINDS...SOME MIXING OF DRIER AIR ALOFT IS OCCURRING AND THIS IS
HELPING AT-LEAST KEEP THE HEAT INDEX VALUES NEAR THE AIR
TEMPERATURE IN MOST LOCATIONS.
A WEAKNESS IN THE RIDGE ACROSS THE SOUTHERN U.S. IS PROGGED OVER
THE NEXT FEW DAYS HELPING TO BRING A TROUGH INTO THE REGION.
HOWEVER...AT THIS POINT THE TROUGH...AND BETTER MOISTURE IS
EXPECTED TO STAY JUST NORTH OF THE DEEP SOUTH TEXAS AREA.
THEREFORE...MUCH OF THE SAME WEATHER IS EXPECTED KEEPING THE HEAT
WAVE GOING AND LITTLE CHANCE FOR RAIN THROUGH AT-LEAST MID WEEK.
AIR TEMPERATURES AGAIN ARE EXPECTED TO BE IN THE TRIPLE DIGITS FOR
INLAND AREAS AND MID TO UPPER 90S ALONG THE COAST. HEAT INDEX
READINGS OR APPARENT TEMPERATURES COULD BE RATHER HIGH ESPECIALLY
OVER PORTIONS OF KENEDY...WILLACY...AND CAMERON COUNTIES WHERE LOW
LEVEL MOISTURE AND THUS DEW POINTS WILL BE HIGHER.
BY THE END OF THE WEEK...A DEEPER EAST TO SOUTHEAST FLOW IS
PROGGED TO DEVELOP ACROSS THE WESTERN GULF AND SOUTH TEXAS. THIS
WILL ALLOW SOME MOISTURE FROM A WESTWARD MOVING WAVE TO PUSH INTO
THE REGION. THEREFORE...WILL INTRODUCE SOME RAIN CHANCES BY
THURSDAY AND CONTINUE THE SLIGHT RAIN CHANCES INTO NEXT WEEKEND.
WITH THE POSSIBILITY OF THE CONVECTION AND DEEPER ONSHORE
FLOW...TEMPERATURES ARE FORECAST TO BE A LITTLE LOWER TOWARD THE
END OF THE WEEK.
AVIATION
FOR THE 04/18Z TAF ISSUANCE...
BREEZY SOUTH WINDS WILL CONTINUE FOR THE REMAINDER OF THE
AFTERNOON WITH GUSTS NEAR 20 KNOTS. WINDS WILL DECREASE AFTER
SUNSET...THEN INCREASE AGAIN ON SUNDAY MORNING. OTHERWISE...VFR
CONDITIONS ARE EXPECTED TO PREVAIL.
MARINE
GRADIENT BETWEEN LOW PRESSURE OVER WEST TEXAS AND HIGH PRESSURE
OVER THE GULF OF MEXICO IS PRODUCING BREEZY SOUTH TO SOUTHEAST
WINDS. SIMILAR PATTERN WILL CONTINUE FOR THE NEXT FEW DAYS WITH
MODERATE SOUTH TO SOUTHEAST WINDS. GRADIENT IS EXPECTED TO RELAX
BY THE MIDDLE OF THE WEEK WITH LIGHT ONSHORE FLOW THE RESULT.
PRELIMINARY POINT TEMPS/POPS
BAYVIEW/PORT ISABEL 81 97 81 97 / 0 0 10 10
BROWNSVILLE 79 98 80 98 / 10 0 10 10
HARLINGEN 79 101 79 101 / 0 0 10 10
MCALLEN 79 102 79 102 / 10 0 10 10
RIO GRANDE CITY 80 102 80 103 / 10 0 10 10
SOUTH PADRE ISLAND 81 90 82 90 / 0 0 10 10
BRO WATCHES/WARNINGS/ADVISORIES
TX...NONE.
GM...NONE.
THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
HTTP://WWW.WEATHER.GOV/BROWNSVILLE
RUA
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