000
FXUS64 KBRO 171831
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
145 PM CDT SAT MAY 17 2008
.DISCUSSION...THE BOUNDARY LAYER RELATIVE HUMIDITIES SHOWED GREATER
THEN 60 PERCENT ALL THE WAY UP TO 500 MB TODAY AND DECREASE TO BELOW
30 PERCENT BY TONIGHT. MOST OF THE SHOWERS AND THUNDERSTORMS HAVE
MOVED EAST OVER THE GULF. A DRYER AND MORE STABLE AIR WILL BE THE
RULE FOR DEEP SOUTH TEXAS FOR TONIGHT AS A NORTHWEST FLOW ALOFT
DOMINATES. BRO SOUNDING THIS MORNING SHOWED A PRECIP WATER OF 1.77
AND A K-INDEX OF 30. HIGH PRESSURE WILL MOVE EAST OVER THE GULF OF
MEXICO BY THE BEGINNING OF NEXT WEEK CAUSING A RETURN SOUTHEAST FLOW
OF AIR. TEMPERATURES WILL BE NEAR NORMAL TO ABOVE NORMAL BY THE
MIDDLE PART OF NEXT WEEK.
&&
.MARINE...AT NOON BUOY 20 REPORTED SOUTH SOUTHWEST WINDS AT 8 KNOTS
WITH GUSTS TO 12 KNOTS AND SEAS AT 3 FEET WITH A 7 SECOND PERIOD.
THERE IS A SLIGHT CHANCE FOR SHOWERS MOVING ACROSS PORTIONS OF THE
MARINE AREAS AT TIMES THROUGH TONIGHT. DRY CONDITIONS AND LIGHT TO
MODERATE NORTHEAST WINDS WILL PREVAIL OVER THE MARINE AREAS THROUGH
SUNDAY AS A HIGH PRESSURE RIDGE BUILDS ACROSS THE COASTAL WATERS.
THE WINDS WILL GRADUALLY SHIFT TO THE SOUTHEAST BY SUNDAY NIGHT.
LIGHT TO MODERATE WINDS AND MODERATE TO LOW SEAS WILL CONTINUE
ACROSS THE MARINE AREAS THROUGH TUESDAY. THE WINDS AND SEAS WILL
BEGIN TO INCREASE ON WEDNESDAY AS A LOW PRESSURE SYSTEM LOCATED
ACROSS THE CENTRAL UNITED STATES TIGHTENS THE PRESSURE GRADIENT OVER
THE COASTAL WATERS. SMALL CRAFT ADVISORIES ARE LIKELY OVER THE
OFFSHORE GULF COASTAL WATERS THURSDAY AND FRIDAY.
&&
.AVIATION...MVFR CONDITIONS WITH LIGHT AND VARIABLE WINDS AND MOSTLY
CLOUDY SKIES ARE BEING REPORTED AT THE REGIONAL AIRPORTS. THERE IS
A SLIGHT CHANCE FOR SHOWERS MOVING ACROSS THE CWA AT TIMES THROUGH
TONIGHT. ANY SHOWERS MAY REDUCE CEILINGS AND/OR VISIBILITIES TO MVFR
OR IFR CONDITIONS. OTHERWISE VFR CONDITIONS WILL PREVAIL OVER THE
REGIONAL AERODROMES DURING THE NEXT 24 HOURS.
&&
.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL 68 89 72 93 / 0 0 0 0
BROWNSVILLE 68 93 72 94 / 0 0 0 0
HARLINGEN 66 94 68 97 / 0 0 0 0
MCALLEN 68 97 71 98 / 0 0 0 0
RIO GRANDE CITY 69 98 73 100 / 0 0 0 0
SOUTH PADRE ISLAND 70 87 74 91 / 0 0 0 0
&&
.BRO WATCHES/WARNINGS/ADVISORIES...NONE.
&&
$$
THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
HTTP://WWW.WEATHER.GOV/BROWNSVILLE
65/63
