Area Forecast Discussion
Issued by NWS Pago Pago

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 
000
FXZS60 NSTU 250120
AFDPPG

AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
220 PM SST FRI MAY 24 2013

.SHORT TERM...
.TONIGHT THROUGH SUNDAY NIGHT...SATELLITE IMAGERY SHOWS PARTLY
CLOUDY SKIES AND ISOLATED SHOWERS NEAR SAMOA AND AMERICAN SAMOA.
THE MAIN WEATHER-DRIVEN MECHANISM IS A LARGE SCALE HIGH PRESSURE
CENTERED TO THE SOUTH-SOUTHEAST OF THE REGION WHICH WILL EVENTUALLY
MOVE EASTWARD THROUGH SUNDAY. ALTHOUGH A SURFACE RIDGE FROM THIS
HIGH WILL MOVE CLOSER TO THE SOUTH OF UPOLU AND TUTUILA DURING THE
NEXT 24 TO 36 HOURS...BUT LOCAL WIND SPEEDS WILL REMAIN NEAR 15 TO
20 KT THROUGH SUNDAY BEFORE DROPPING TO NEAR 10 TO 15 KT ON SUNDAY
NIGHT. ONLY ISOLATED SHOWERS ARE EXPECTED. THEREFORE... ANTICIPATE
PARTLY TO MOSTLY CLOUDY SKIES DURING THE LONG TERM FCST PERIOD.

.LONG TERM...
.MONDAY THROUGH FRIDAY...A SURFACE RIDGE NEAR THE SAMOAN ISLANDS
WILL YIELD TO FAVORABLE WEATHER CONDITIONS ON THE MEMORIAL DAY
HOLIDAY BEFORE SCATTERED SHOWERS ENTER THE FCST ZONE NEAR THE
MIDWEEK. A STRONG AREA OF HIGH PRESSURE FROM THE SOUTHWEST WILL
SWEEP CLOUDS AND WEATHER NEAR THE AREA ON WEDNESDAY ESPECIALLY
NEAR SAVAII AND UPOLU. A SHEAR LINE FROM THE SOUTH WILL LIKELY
MAKE ITS WAY NEAR THE SAMOAN ISLANDS JUST BEFORE THE END OF THE
FCST PERIOD...BUT WILL MONITOR THIS SITUATION AS WIND AND SHOWERS
MAY INCREASE BEFORE FRIDAY. FOR NOW...WILL KEEP SHOWERS AT A
MINIMAL WHILE MONITORING ANY NEW DEVELOPING WEATHER FROM THE SOUTH OF
THE REGION DURING THE LATTER PART OF THE WEEK.

&&

.MARINE...COMBINED SEAS OF 4 TO 6 FEET WILL CONTINUE OVER THE NEXT
SEVERAL DAYS.

&&

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

&&

$$

BAQUI
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.