FXUS64 KBRO 242021 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
221 PM CST THU DEC 24 2009
.UPDATE...WILL UPDATE THE CURRENT FORECAST TO ISSUE A WIND
ADVISORY FOR THE CWA AS THE CURRENT OBS ARE SHOWING NW WINDS
25G35 MPH. THIS WILL LIKELY BE A FAIRLY SHORT LIVED ADVISORY AS
EXPECT THE PGF TO FINALLY WEAKEN AFTER SUNSET THIS EVENING
ALLOWING THE STRONG WINDS TO DIMINISH. OTHERWISE NO OTHER CHANGES
NEEDED TO THE CURRENT FORECAST WORDING.
&&
.DISCUSSION...STRONG WNW WNDS HAVE BEEN CONFINED TO AREAS JUST NORTH
OF THE RGV THIS PM...WITH 45 TO 50 KT GUSTS COMMON OVR THE CRP
REGION. OUR WINDS REMAIN JUST BELOW WND ADV CRITERIA...GENERALLY NW
AT 25 TO 35 MPH. FROPA AT 430 AM CST IN MFE AND AROUND 530 AM IN BRO
BROUGHT 38 TO 41 KT GUSTS TO THE REGION...THEN A LULL IN WND SPEEDS
UNTIL AMPLE MIXING DEVELOPED BY LATE MRNG. VAD WNDS FM KBRO DOPPLER
SHOWS THAT THE 50 KT JET AT 2K FT AT DAWN HAS LIFTED TO OUR
NORTH...LEAVING 30 KTS AT 1K FT AND 35 KTS AT 2K FT. VERIFICATION
FOR A WIND ADV POSTED BY NIGHT METS VERIFIED WELL FOR FROPA...ALONG
WITH GALE WARNING FOR ALL MARINE AREAS POSTED YESTERDAY AT 1 PM CST.
COLD AND DRY AIR WILL CONTINUE TO ENTER THE RGV OVRNGT...WITH LOWS
NEAR 40 IN BRO...35 OVR NRN COUNTIES. RETURN FLOW BEGINS SAT
AM...WITH -RA AND PROGRESSIVE LOWERING OF CIGS FM OVC025 TO OVC010
BY SAT PM. ADDITIONAL SHOTS OF COOLER AIR ARE FOLLOWED BY OVRRNG
PCPN THRU MID WEEK. HIGHS IN THE 60S WITH LOWS IN THE 40S AND
FREQUENT -SHRAS SAT THRU WED. HPC IS KEEPING RAINFALL TOTALS DURING
THE NEXT SEVERAL DAYS UNDER 0.20 INCH.
&&
MARINE...BUOY 42020 REPORTED NORTHWEST WINDS AT 29 KNOTS GUSTING TO
35 KNOTS WITH SEAS 11.5 FEET WITH A PERIOD OF 7 SECONDS. A GALE
WARNING IS IN EFFECT FOR THE OPEN WATERS OF DEEP SOUTH TEXAS THROUGH
THE MID AFTERNOON HOURS...AS HAZARDOUS WIND AND SEA CONDITIONS
WILL PREVAIL IN THE WAKE OF A COLD FRONT. A SMALL CRAFT ADVISORY
WILL BE IN EFFECT FOR THE LAGUNA AND FOR THE OPEN WATERS LATER THIS
AFTERNOON THROUGH EARLY THIS EVENING. MARINE CONDITIONS WILL IMPROVE
TONIGHT AND SATURDAY AS HIGH PRESSURE BRIEFLY PREVAILS OVERHEAD.
WINDS AND SEAS WILL THEN INCREASE SUNDAY THROUGH MUCH OF NEXT WEEK
AS HIGH PRESSURE OVER TEXAS INTERACTS WITH LOWER PRESSURE OVER THE
BAY OF CAMPECHE.
&&
AVIATION...VFR CONDITIONS WILL PREVAIL OVER THE REGIONAL AIRPORTS
FOR THE NEXT 24 HOURS. WINDS WILL BE MODERATE TO STRONG FROM THE
NORTHWEST TODAY BECOMING LIGHT TONIGHT.
&&
.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL 44 62 47 60 / 0 0 10 30
BROWNSVILLE 45 64 47 58 / 0 0 10 30
HARLINGEN 41 64 45 56 / 0 0 10 30
MCALLEN 41 64 45 56 / 0 0 10 30
RIO GRANDE CITY 41 62 42 59 / 0 0 10 30
SOUTH PADRE ISLAND 52 63 50 61 / 0 0 10 30
&&
.BRO WATCHES/WARNINGS/ADVISORIES...
TX...WIND ADVISORY UNTIL 7 PM CST THIS EVENING FOR TXZ248>257.
GM...SMALL CRAFT ADVISORY UNTIL 6 AM CST FRIDAY FOR GMZ130-132-135.
SMALL CRAFT ADVISORY FROM 8 PM THIS EVENING TO 6 AM CST FRIDAY
FOR GMZ150-155-170-175.
GALE WARNING UNTIL 8 PM CST THIS EVENING FOR GMZ150-155-170-175.
&&
$$
THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
HTTP://WWW.WEATHER.GOV/BROWNSVILLE
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