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000
FXZS60 NSTU 250048
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
148 PM SST THU APR 24 2014

.SHORT TERM...
TONIGHT THROUGH SATURDAY...LATEST VISIBLE LOOPS SHOW THE SAMOAN
ISLANDS BEING SANDWICHED IN-BETWEEN TWO BANDS OF CLOUDS MARKING
THE PLACEMENT OF TWO SURFACE TROUGHS. THE FIRST TROUGH LIES TO THE
NORTH OF THE SAMOAN ISLANDS AND THE SECOND TO THE SOUTH WHILE A
RIDGE ORIENTS ACROSS THE SAMOAN ISLANDS. GLOBAL MODELS SHOW THE TROUGH
TO THE NORTH SLOWLY DISSIPATING AS IT MIGRATES TO THE WEST. THE
TROUGH TO THE SOUTH IS EXPECTED TO REMAIN NEARLY STATIONARY AS THE
HIGH PRESSURE FAR SOUTH REMAINS STAGNANT. SIMPLY PUT...THE
AFOREMENTIONED TROUGHS WILL HAVE SOME INFLUENCE IN TERMS OF
SLIGHTLY INCREASING THE CHANCE OF SHOWERS AND CLOUD COVERAGE...BUT
ITS INFLUENCE WILL BE LIMITED IN THE SHORT TERM AS THE RIDGE OVER
THE ISLANDS DOMINATE WEATHER CONDITIONS ACROSS THE AREA.

LIGHT TO MODERATE EASTERLIES WILL PREVAIL THROUGH THE SHORT TERM
AS THE AFOREMENTIONED HIGH PRESSURE SYSTEM REMAINS TO THE SOUTH.

.LONG TERM...
MONDAY THROUGH THURSDAY...RIDGING OVER THE ISLANDS WILL DOMINATE
WEATHER CONDITIONS OVER THE ISLANDS THROUGH THE LONG TERM. THERE
ARE PERIODS OF SHOWERS...ESPECIALLY THE FIRST PERIODS...AS THE
AFOREMENTIONED TROUGH TO THE SOUTH OF THE ISLANDS IS FORECASTED TO
BE CLOSEST TO THE TERRITORY AS IT MIGRATES FURTHER TO THE EAST.

VARIABLE WINDS WILL PREVAIL AS THE HIGH PRESSURE SYSTEM TO THE
SOUTH MOVES FURTHER TO THE EAST.

&&

.MARINE...
LATEST SOLUTIONS SHOW SEAS AND WINDS REMAINING BELOW ADVISORY
THRESHOLDS THROUGH THE FORECAST PACKAGE.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
NONE

&&

$$
LUTU-MCMOORE








000
FXZS60 NSTU 240111
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
211 PM SST WED APR 23 2014

.SHORT TERM...
TONIGHT THROUGH FRIDAY NIGHT...SATELLITE IMAGERIES SHOW A TROUGH
TO THE SOUTH OF THE ISLANDS. RAOB FROM THIS AFTERNOON DEPICTS A
STABLE PROFILE. MODELS CONTINUE TO SUPPRESS SHOWERS OVER THE
ISLANDS IN THE NEXT FEW DAYS. THEREFORE NO CHANGES TO THE PREVIOUS
FCST.

.LONG TERM...
SATURDAY THROUGH WEDNESDAY...THE TROUGH IS EXPECTED TO ENHANCE AND
MATERIALIZE DURING THE WEEKEND AND INTO THE NEW WEEK. A HIGH TO
THE FAR SOUTH WILL CONTINUE EAST SLOWLY WHILE UNSTABLE WEATHER
REMAINS NEAR SOUTH AND OVER THE ISLANDS DURING MOST OF THE LONG
TERM. THEREFORE...NO CHANGES TO THE PREVIOUS FCST.

&&

.MARINE...
NO SIGNIFICANT SWELLS ARE EXPECTED IN THE NEXT SEVERAL DAYS.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

$$

MALALA









000
FXZS60 NSTU 230037
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
137 PM SST TUE APR 22 2014

.SHORT TERM...
TONIGHT THROUGH THURSDAY NIGHT...LATEST SATELLITE LOOPS SHOW A
BROKEN LAYER OF MID TO HIGH LEVEL CLOUDS STREAMING OVER THE
ISLANDS FROM THE WEST. THESE CLOUDS ARE ASSOCIATED WITH
THUNDERSTORMS ALONG A SURFACE TROUGH TO THE WEST OF SAVAII.
GLOBAL MODELS ARE SHOWING THIS SURFACE TROUGH MIGRATING TO THE
SOUTH OF THE TERRITORY...CAUSING A SLIGHT UPTICK IN CLOUD COVERAGE
AND RAINFALL TOWARDS THE LATTER PART OF THE SHORT TERM.
HOWEVER...A STRENGTHENING MID-LEVEL RIDGE WILL CONTRIBUTE TO THE
STABILIZING OF THE ATMOSPHERE...SUPPRESSING AND LIMITING MOST
CLOUD BUILD UP AND RAINFALL THROUGH THE WEEK.

LIGHT TO MODERATE EASTERLIES WILL PREVAIL THROUGH THE SHORT TERM
AS THE SURFACE TROUGH MIGRATE NEAR THE ISLANDS.

.LONG TERM...
FRIDAY THROUGH TUESDAY...CLOUD COVER AND RAINFALL PROBABILITY ARE
EXPECTED TO TREND DOWNWARDS THROUGH THE LONG TERM AS THE
AFOREMENTIONED SURFACE TROUGH MIGRATES FURTHER SOUTH AND WEAKEN.
HENCE...THOUGH THE FIRST PART OF THE LONG TERM WILL HAVE SOME
SHOWERS AND CLOUDS...BENIGN WEATHER WILL RETURN BY AT LEAST
SUNDAY. LIGHT TO MODERATE EASTERLIES WILL ALSO DIMINISH BY SUNDAY
AS PRESSURE GRADIENTS OVER THE TERRITORY WEAKEN.

&&

.MARINE...
WAVE WATCH MODELS DEPICT SEAS TO REMAIN BELOW ADVISORY THRESHOLDS
THROUGH THE FORECAST PACKAGE.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
NONE

&&

$$
LUTU-MCMOORE








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