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000
FXZS60 NSTU 020117
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
217 PM SST SAT AUG 1 2015

.SHORT TERM...
TONIGHT THROUGH MONDAY NIGHT...SATELLITE IMAGERIES SHOW AN ACTIVE
TROUGH SLIGHTLY TO THE NORTH AND A FEW LOW CLOUDY ACROSS THE
ISLANDS. A BROAD AREA OF MID CLOUDS IS SLOWLY MOVING EASTWARD.
RAOB FROM THIS AFTERNOON DEPICTS A STABLE PROFILE OVER THE
ISLANDS. MODELS SUGGEST THAT THE SURFACE TROUGH SLIGHTLY TO THE
NORTH WILL DESCEND SOUTH ACROSS THE ISLANDS LATE TONIGHT AND
REMAINS THROUGH MONDAY NIGHT. SHOWERS WILL INCREASE TO NUMEROUS
LATE TONIGHT WHILE TRADES WILL BUILD TO VERY STRONG CONDITIONS ON
SUNDAY NIGHT THROUGH MONDAY.

.LONG TERM...
TUESDAY THROUGH SATURDAY...PRESSURE GRADIENT WILL DECREASE OVER
THE ISLANDS AS THE TROPICAL DEPRESSION NEAR EAST OF SOLOMON
DRIFTS SOUTH. HIGH PRESSURE TO THE SOUTH WILL CONTINUE TO MIGRATE
EASTWARD AND THE ACTIVE SURFACE TROUGH WILL MOVE FARTHER NORTH ON
TUESDAY. THEREFORE...STABLE WEATHER PATTERNS WILL DOMINATE MOST OF
THE LONG TERM.

&&

.MARINE...
HAZARDOUS SEAS 8 TO 10 FT WILL RISE 9 TO 12 ON SUNDAY NIGHT
THROUGH MONDAY. SEAS WILL SUBSIDE AGAIN 8 TO 10 FT ON MONDAY
NIGHT.

&&

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

&&

$$

MALALA








000
FXZS60 NSTU 020117
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
217 PM SST SAT AUG 1 2015

.SHORT TERM...
TONIGHT THROUGH MONDAY NIGHT...SATELLITE IMAGERIES SHOW AN ACTIVE
TROUGH SLIGHTLY TO THE NORTH AND A FEW LOW CLOUDY ACROSS THE
ISLANDS. A BROAD AREA OF MID CLOUDS IS SLOWLY MOVING EASTWARD.
RAOB FROM THIS AFTERNOON DEPICTS A STABLE PROFILE OVER THE
ISLANDS. MODELS SUGGEST THAT THE SURFACE TROUGH SLIGHTLY TO THE
NORTH WILL DESCEND SOUTH ACROSS THE ISLANDS LATE TONIGHT AND
REMAINS THROUGH MONDAY NIGHT. SHOWERS WILL INCREASE TO NUMEROUS
LATE TONIGHT WHILE TRADES WILL BUILD TO VERY STRONG CONDITIONS ON
SUNDAY NIGHT THROUGH MONDAY.

.LONG TERM...
TUESDAY THROUGH SATURDAY...PRESSURE GRADIENT WILL DECREASE OVER
THE ISLANDS AS THE TROPICAL DEPRESSION NEAR EAST OF SOLOMON
DRIFTS SOUTH. HIGH PRESSURE TO THE SOUTH WILL CONTINUE TO MIGRATE
EASTWARD AND THE ACTIVE SURFACE TROUGH WILL MOVE FARTHER NORTH ON
TUESDAY. THEREFORE...STABLE WEATHER PATTERNS WILL DOMINATE MOST OF
THE LONG TERM.

&&

.MARINE...
HAZARDOUS SEAS 8 TO 10 FT WILL RISE 9 TO 12 ON SUNDAY NIGHT
THROUGH MONDAY. SEAS WILL SUBSIDE AGAIN 8 TO 10 FT ON MONDAY
NIGHT.

&&

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

&&

$$

MALALA








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









000
FXZS60 NSTU 310057
AFDPPG

NARRATIVE SYNOPTIC DISCUSSION FOR AMERICAN SAMOA AND THE
INDEPENDENT STATE OF SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
200 PM SST THUR JULY 30 2015

.SHORT TERM...
.TONIGHT THROUGH SATURDAY NIGHT...SATELITE IMAGERIES ARE SHOWING EXTENSIVE
CLOUDINESS ACROSS THE ISLANDS ASSOCIATED WITH A STATIONARY TROUGH/CONVERGENCE
ZONE JUST NORTH OF THE ISLANDS.  MODELS ARE HOLDING THE TROUGH NEARLY STATIONARY
OVER THE ISLAND THROUGH MONDAY BEFORE PUSHING IT NORTHWARD AGAIN NEXT WEEK. A
BROAD AREA OF HIGH PRESSURE NEAR NEW ZEALAND WITH A RIDGE NORTHEASTWARD WILL
CONTINUE TO MOVE EASTWARD THROUGH NEXT WEEK.
THE 31/00Z RAOB INDICATED AN UNSTABLE ATMOSPHERE. THEREFORE...EXPECT SCATTERED TO
NUMEROUS SHOWERS TO DEVELOP ACROSS THE ISLAND TONIGHT THROUGH SATURDAY NIGHT.
EAST WINDS 15 TO 20 MPH WITH HIGHER GUSTS IN SHOWERS WILL PERSIST THROUGH THE FORECAST PERIOD.

&&

.LONG TERM...
.SUNDAY THROUGH THURSDAY...THE MODELS KEPT THE TROUGH/CONVERGENCE ZONE STATIONARY
OVER THE ISLANDS THROUGH TUESDAY THAN MOVE IT NORTHWARD FOR THE REST OF THE WEEK.
THE HIGH PRESSURE FAR SOUTHWEST CONTINUES TO BUILD EASTWARD...THUS TIGHTENING UP
THE PRESSURE GRADIENT AND WILL SEE TRADES TO INCREASE FROM 20 TO 30 MPH BY MID WEEK.
THEREFORE...EXPECT CLOUDY WITH NUMEROUS SHOWERS IN THE BEGINING OF THE WEEK WITH TRADE OF 15 TO
20 MPH THROUGH TUESDAY.  MOSTLY CLOUDY WITH ISOLATED SHOWERS WEDNESDAY AND THURSDAY
WITH TRADES OF 20 TO 30 MPH.

&&

.MARINE...COMBINED SEAS OF 9 TO 12 FEET WILL PERSIST THROUGH TUESDAY BUILDING TO
10 TO 14 FT BY MID WEEK.

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

$$

AKAPO




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