Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 230028
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
128 PM SST WED MAR 22 2017

.SHORT TERM...
TONIGHT THROUGH FRIDAY NIGHT...CURRENT MODEL DATA SHOW A SURFACE
TROUGH LINGERING NEAR THE SAMOAN ISLANDS THROUGH THURSDAY THEN
WEAKEN SLIGHTLY. LATEST SATELLITE IMAGERY SHOW SHOWERS WITH EMBEDDED
THUNDERSTORMS ASSOCIATED WITH THE AFOREMENTIONED TROUGH UPSTREAM
OF THE ISLANDS. GENTLE TO MODERATE EASTERLIES HAVE RETURNED ACROSS
THE AREA AND WILL REMAIN THROUGH THE REMAINDER OF THE WEEK AS A
LARGE HIGH PRESSURE SYSTEM FAR SOUTH MIGRATE EAST.

.LONG TERM...
SATURDAY THROUGH WEDNESDAY...MODERATE EASTERLIES WILL CONTINUE TO
PREVAIL THROUGH THE LONG TERM. LATEST MODEL SOLUTIONS SHOW A
TROUGH TO THE SOUTH OF THE ISLAND CHAIN AND ANOTHER TO THE NORTH
REMAIN CLOSE ENOUGH FOR SOME OF THE ASSOCIATED SHOWERS TO MOVE
ACROSS THE FORECAST AREA THROUGH THE WEEKEND. WILL KEEP PREVIOUS
FORECAST FOR THE LONG TERM AND MAKE CHANGES IF NECESSARY.

&&

.MARINE...
SEAS WILL REMAIN BELOW ADVISORY THRESHOLD THROUGH THE FORECAST
PERIOD. THERE IS A POSSIBILITY THAT WINDS MAY BORDER THRESHOLD
CRITERIA THROUGH THE WEEKEND. FOR NOW...CURRENT MODEL DATA DO NOT SHOW
WINDS REACHING 20 KNOTS. WILL CONTINUE TO MONITOR FUTURE MODEL
OUTPUT AND ISSUE A SMALL CRAFT ADVISORY DUE TO WINDS IF NECESSARY.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
NONE

&&

$$

LUTU-MCMOORE






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