Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 260033
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
133 PM SST SUN JAN 25 2015

.SHORT TERM...
TONIGHT THROUGH TUESDAY NIGHT...LATEST SATELLITE IMAGERY SHOWS AN
ACTIVE MONSOONAL TROUGH WITH EMBEDDED THUNDERSTORMS REMAINING
NEARLY STATIONARY JUST NORTH OF THE SAMOAN ISLANDS. LATEST
SOLUTIONS SHOW THIS TROUGH SLOWLY DRIFTING SOUTH. THIS SOUTHWARD
MOVEMENT WILL CAUSE AN INCREASING TREND IN SHOWERS AND CLOUDS
AS WELL AS THE POSSIBILITY OF THUNDERSTORMS THROUGHOUT THE SHORT
TERM. FURTHERMORE...THE MOVEMENT OF THIS TROUGH COUPLED WITH THE
PLACEMENT OF A HIGH PRESSURE FAR SOUTH OF THE ISLANDS WILL CAUSE
WINDS TO BACK TO THE NORTHWEST THROUGH TUESDAY. HENCE...MAINTAIN
PREVIOUS FORECAST AND READJUST TO SHOW INCREASING TREND IN SHOWERS
AND CLOUD COVER.

.LONG TERM...
WEDNESDAY THROUGH SUNDAY...THE LONG TERM IS VERY INTERESTING AS
LATEST SOLUTIONS SHOW A LOW PRESSURE SYSTEM DEEPENING WITHIN THE
AFOREMENTIONED MONSOONAL TROUGH NEAR THE TOKELAU GROUP THEN MOVES
IT DIRECTLY SOUTH OVER THE TERRITORY. WE WILL CONTINUE TO MONITOR
CONDITIONS AND MAKE UPDATES AS NECESSARY.

&&

.MARINE...
LATEST WAVE WATCH SOLUTIONS SHOW SEAS GRADUALLY INCREASING AND
PEAKING MONDAY NIGHT AS THE LARGE NORTH SWELL FROM THE NORTH
ARRIVES WITHIN OUR AREA. HENCE...WILL CONTINUE TO MONITOR THIS
SWELL AND UPGRADE THE HIGH SURF ADVISORY TO A WARNING IF
CONDITIONS WARRANT. IN THE MEANTIME...THE ADVISORIES FOR HIGH SURF
AND SMALL CRAFTS REMAIN FOR ALL ISLANDS. FURTHERMORE...SEAS AND
WINDS ARE HIGHER NEAR THUNDERSTORMS AS THE AFOREMENTIONED
MONSOONAL TROUGH DRIFTS NEAR THE TERRITORY.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
HIGH SURF ADVISORY REMAINS IN EFFECT FOR ALL SHORES
SMALL CRAFT ADVISORY REMAINS IN EFFECT FOR ALL COASTAL WATERS

&&

$$

LUTU-MCMOORE





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