Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 280107
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
207 PM SST TUE SEP 27 2016

.SHORT TERM...
.TONIGHT THROUGH THURSDAY NIGHT...A SURFACE TROUGH EMBEDDED WITHIN
THE EASTERLY FLOW WILL ARRIVE WEDNESDAY. THIS WILL TRIGGER SCATTERED
TO NUMEROUS SHOWERS TO PASS THROUGH THE AREA OVER THE NEXT 18 TO
48 HOURS. AS A SURFACE RIDGE DRIFTS SOUTHWARD FROM THE SAMOAN ISLANDS
TONIGHT...THE LEADING EDGE OF A DEVELOPING HIGH PRESSURE WILL SLIDE
EASTWARD WHICH WILL BLOCK THE LINE OF CLOUDS FROM THE WEST OF SAVAII TO
STALL OVER THE SAMOAN ISLANDS INTO THURSDAY NIGHT. AS A RESULT...ANTICIPATE
WET WEATHER CONDITIONS AND ISOLATED TSTMS OVER THE AREA STARTING WEDNESDAY
AFTERNOON THROUGH THURSDAY NIGHT. GENTLE TO MODERATE EAST WINDS
WILL PREVAIL.

.LONG TERM...
.FRIDAY THROUGH TUESDAY...A NW TO SE ORIENTED SURFACE TROUGH WILL HOVER
OVER THE AREA INTO THE END OF THE WEEK. A COUPLED HIGH PRESSURE SYSTEMS
WELL SW AND SE WILL HINDER THE AFOREMENTIONED SURFACE TROUGH FROM EXITING
THE REGION ANY TIME SOON. THEREFORE...ANTICIPATE BROKEN TO OVERCAST
CLOUD COVERAGE AND SCATTERED TO NUMEROUS SHOWERS DURING THE LONG-
TERM FCST PERIOD.

&&

.MARINE...THE LATEST FNMOC WW3 SHOWS SEAS OF 4 TO 6 FT WILL PERSIST
OVER THE NEXT SEVERAL DAYS.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

NONE.

&&

$$

CB





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