Area Forecast Discussion
Issued by NWS Pago Pago

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000
FXZS60 NSTU 010104
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
204 PM SST FRI JUL 31 2015

.SHORT TERM...
TONIGHT THROUGH SUNDAY NIGHT...SATELLITE IMAGERIES SHOW A
STATIONARY CONVERGENCE OVER THE ISLANDS. RAOB FROM THIS AFTERNOON
DEPICTS AN UNSTABLE PROFILE. MODELS SUGGEST THAT THAT THE LOW
LEVEL CONVERGENCE WILL REMAIN NEARLY STATIONARY THROUGH SUNDAY
NIGHT. AN ACTIVE LOW PRESSURE EAST OF SOLOMON AND A HIGH PRESSURE
TO THE SOUTH WILL GENERATE A STRONG PRESSURE GRADIENT ACROSS THE
ISLANDS ON SUNDAY. AS A RESULT...TRADES WILL INCREASE TO VERY
STRONG CONDITIONS. THE ACTIVE CONVERGENCE WILL KEEP SHOWERS TO
NUMEROUS TONIGHT THROUGH SUNDAY NIGHT. TRADES WILL REMAIN BREEZY
TO STRONG TONIGHT BEFORE ESCALATING TO VERY STRONG ON SUNDAY
NIGHT.

.LONG TERM...
MONDAY THROUGH FRIDAY...LOW PRESSURE WILL DRIFT SOUTH ON MONDAY
NIGHT AND WILL DECREASE THE PRESSURE GRADIENT OVER THE ISLANDS.
THE LOW LEVEL CONVERGENCE WILL MOVE NORTH ON TUESDAY. VERY STRONG
TRADES WILL SLIGHTLY DIMINISH ON MONDAY NIGHT. THEREFORE WILL
AMEND THE PREVIOUS FCST TO REFLECT THE CURRENT OUTPUTS.

&&

.MARINE...
SEAS OF 8 TO 10 FT WILL PERSIST TONIGHT BEFORE RISING 9 TO 12 FT
ON SUNDAY NIGHT. THESE HAZARDOUS CONDITIONS WILL PREVAIL
THROUGHOUT THE FORECAST PERIOD.

&&

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

&&

$$

MALALA







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