Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 240044
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
144 PM SST FRI JUN 23 2017

.SHORT TERM...
TONIGHT THROUGH SUNDAY NIGHT...THE TROUGH THAT BROUGHT AN ABUNDANT
AMOUNT OF SHOWERS OVERNIGHT THROUGH THIS MORNING HAVE WEAKENED AS
IT MOVES FURTHER EAST. LATEST MODEL DATA SHOW FAIRLY NICE WEATHER
TONIGHT THROUGH AT LEAST SATURDAY AS A WEAK RIDGE IS CLOSEST TO
THE TERRITORY. BY SUNDAY...THE RIDGE IS FORECAST TO MOVE FURTHER
EAST...ALLOWING FOR ANOTHER BOUT OF MOISTURE ASSOCIATED WITH A
SURFACE TROUGH TO MOVE ACROSS THE FORECAST AREA FROM THE NORTH.

MODERATE TO FRESH EASTERLIES WILL CONTINUE TO PREVAIL THROUGH THE
SHORT TERM AS THE STRONG HIGH PRESSURE SYSTEM ASSOCIATED WITH THE
AFOREMENTIONED RIDGE MIGRATE EASTWARD.

.LONG TERM...
MONDAY THROUGH FRIDAY...EAST WINDS WILL CONTINUE TO PREVAIL BUT
WILL SLIGHTLY DIMINISH IN SPEED AS THE AFOREMENTIONED HIGH
PRESSURE MIGRATE FURTHER EAST. LATEST MODEL DATA SHOW THE
AFOREMENTIONED TROUGH LINGERING NEAR THE SAMOAN ISLANDS THROUGH
THE LONG TERM. HENCE...WILL ADJUST FORECAST TO REFLECT CURRENT
MODEL DATA.

&&

.MARINE...
LATEST AUNUU WAVE OBSERVATIONS ARE STILL HIGHER THAN FORECASTED
HEIGHTS...REMAINING ABOVE ADVISORY THRESHOLDS. THE WAVE WATCH
WATCH III SOLUTIONS SHOW THE HEIGHTS TRENDING
DOWNWARD...DECREASING BELOW ADVISORY LEVELS TODAY. HOWEVER...AS
THE OBSERVATIONS EXCEED THE FORECAST...WILL KEEP THE ADVISORIES
FOR HIGH SURFS AND SMALL CRAFTS THROUGH AT LEAST THE WEEKEND. THIS
IS ESPECIALLY IMPORTANT AS THE EXPECTED KING TIDE SATURDAY MORNING
WILL ALSO ELEVATE HEIGHTS.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
HIGH SURF ADVISORY REMAINS IN EFFECT
SMALL CRAFT ADVISORY REMAINS IN EFFECT

&&

$$

LUTU-MCMOORE





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