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000
FXZS60 NSTU 250126
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
226 PM SST FRI APR 24 2015

.SHORT TERM...
.TONIGHT THROUGH SUNDAY NIGHT...A SURFACE TROUGH AXIS WILL PASS TO
THE SOUTH OF THE SAMOAN ISLANDS. HOWEVER...STRONG NORTHWESTERLY
WINDS ALOFT WILL ENHANCE CLOUDS AND ISOLATED TSTMS TO MOVE OVER
THE AREA DURING THE NEXT 12 TO 24 HOURS. A SURFACE RIDGE FROM THE
SOUTHEAST WILL EXTEND TO THE NORTH OF THE AREA STARTING SATURDAY
MORNING THUS INCREASING MOISTURE WILL DRIFT OVER THE FCST ZONES
OVER THE NEXT COUPLE OF DAYS. THEREFORE...ANTICIPATE VARIABLE
WINDS UP TO 10 KT WITH HIGHER GUSTS NEAR TSTMS INTO SATURDAY NIGHT.

.LONG TERM...
.MONDAY THROUGH FRIDAY...A WEAK HIGH PRESSURE SYSTEM FROM THE SOUTH
WILL USHER MODERATE TRADE-WINDS OVER THE NEXT SEVERAL DAYS. THIS
WEATHER PATTERN WILL ENHANCE INCREASING CLOUDINESS AND SCATTERED
LIGHT SHOWERS TO MOVE ACROSS THE REGION INTO THE MIDWEEK. HAVE
UPDATED THE CLOUD COVERAGE AND WIND DIRECTION TO REFLECT THIS
SITUATION. THEREFORE...ANTICIPATE ISOLATED TO SCATTERED SHOWERS
THROUGH FRIDAY.

&&

.MARINE...A LOW PRESSURE COMBINED WITH A STRONG HIGH PRESSURE WELL
SOUTHEAST OF THE REGION WILL GENERATE HAZARDOUS SWELL HEIGHTS UP
TO 9 TO 12 FEET SATURDAY MORNING. THIS WILL WARRANT THE ISSUANCE
OF ADVISORIES FOR HIGH SURFS AND SMALL CRAFTS UNTIL MONDAY MORNING.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
.A SMALL CRAFT ADVISORY.
.A HIGH SURF ADVISORY.

&&

$$

BAQUI










000
FXZS60 NSTU 240058
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
158 PM SST THU APR 23 2015

.SHORT TERM...
TONIGHT THROUGH SATURDAY NIGHT...A SURFACE TROUGH OVER THE
SAMOAN ISLANDS WILL CONTINUE TO REMAIN THROUGH THE WEEKEND.
ALTHOUGH THE BULK OF THE THUNDERSTORMS AND MOISTURE HAVE MOVED
JUST NORTH OF THE ISLANDS...LATEST MODEL SOLUTIONS HAVE DELAYED
THE ARRIVAL OF ADDITIONAL MOISTURE AND LIKELY THUNDERSTORMS OVER
THE TERRITORY TO FRIDAY NIGHT AND REMAINING THROUGH THE WEEKEND AS
THE AFOREMENTIONED TROUGH RESTRENGTHENS. HENCE...WILL CANCEL THE
FLASH FLOOD WATCH FOR NOW...AND CONTINUE TO WATCH CONDITIONS
THROUGH THE ENDING OF THE SHORT TERM.

.LONG TERM...
SUNDAY THROUGH THURSDAY NIGHT...LATEST SOLUTIONS ARE BUILDING A
SURFACE RIDGE SOUTH OF THE SAMOAN ISLANDS THROUGH THE LONG TERM.
THIS WILL CAUSE THE ONSET OF LIGHT TO MODERATE TRADES...WITH
SHOWERS EMBEDDED WITHIN THE TRADE WIND FLOW.

&&

.MARINE...
LATEST WAVE WATCH SOLUTIONS HAVE SLIGHTLY DELAYED THE ARRIVAL OF
THE SOUTH SWELL. HOWEVER...OBSERVATIONS SHOWN FROM THE AUNUU BUOY
IS MORE IN LINE WITH YESTERDAYS MODELS SOLUTIONS...WITH AT LEAST
11 SECONDS SIGNIFICANT WAVE HEIGHTS OF AT LEAST 7 FEET HAVE
REACHED THE ISLANDS...MEETING THRESHOLDS FOR THE HIGH SURF
ADVISORY. HENCE...SINCE THE SOUTH SWELL IS EXPECTED TO REMAIN
THROUGH AT LEAST SATURDAY NIGHT...WILL CONTINUE THE ADVISORIES FOR
SMALL CRAFTS AND HIGH SURFS AS INITIALLY DISCUSSED.

&&

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

&&

$$

LUTU-MCMOORE






000
FXZS60 NSTU 240058
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
158 PM SST THU APR 23 2015

.SHORT TERM...
TONIGHT THROUGH SATURDAY NIGHT...A SURFACE TROUGH OVER THE
SAMOAN ISLANDS WILL CONTINUE TO REMAIN THROUGH THE WEEKEND.
ALTHOUGH THE BULK OF THE THUNDERSTORMS AND MOISTURE HAVE MOVED
JUST NORTH OF THE ISLANDS...LATEST MODEL SOLUTIONS HAVE DELAYED
THE ARRIVAL OF ADDITIONAL MOISTURE AND LIKELY THUNDERSTORMS OVER
THE TERRITORY TO FRIDAY NIGHT AND REMAINING THROUGH THE WEEKEND AS
THE AFOREMENTIONED TROUGH RESTRENGTHENS. HENCE...WILL CANCEL THE
FLASH FLOOD WATCH FOR NOW...AND CONTINUE TO WATCH CONDITIONS
THROUGH THE ENDING OF THE SHORT TERM.

.LONG TERM...
SUNDAY THROUGH THURSDAY NIGHT...LATEST SOLUTIONS ARE BUILDING A
SURFACE RIDGE SOUTH OF THE SAMOAN ISLANDS THROUGH THE LONG TERM.
THIS WILL CAUSE THE ONSET OF LIGHT TO MODERATE TRADES...WITH
SHOWERS EMBEDDED WITHIN THE TRADE WIND FLOW.

&&

.MARINE...
LATEST WAVE WATCH SOLUTIONS HAVE SLIGHTLY DELAYED THE ARRIVAL OF
THE SOUTH SWELL. HOWEVER...OBSERVATIONS SHOWN FROM THE AUNUU BUOY
IS MORE IN LINE WITH YESTERDAYS MODELS SOLUTIONS...WITH AT LEAST
11 SECONDS SIGNIFICANT WAVE HEIGHTS OF AT LEAST 7 FEET HAVE
REACHED THE ISLANDS...MEETING THRESHOLDS FOR THE HIGH SURF
ADVISORY. HENCE...SINCE THE SOUTH SWELL IS EXPECTED TO REMAIN
THROUGH AT LEAST SATURDAY NIGHT...WILL CONTINUE THE ADVISORIES FOR
SMALL CRAFTS AND HIGH SURFS AS INITIALLY DISCUSSED.

&&

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

&&

$$

LUTU-MCMOORE






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