Area Forecast Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
000
FXPQ60 PGUM 050530
AFDPQ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TIYAN GU
330 PM CHST SAT SEP 5 2015

.SYNOPSIS...
RADAR SHOWS ISOLATED LIGHT SHOWERS ACROSS THE COVERAGE AREA...AND
SATELLITE SHOWS PARTLY CLOUDY SKIES ACROSS THE LOCAL REGION. ASCAT
ANALYSIS INDICATES A LOW-LEVEL CIRCULATION (INVEST AREA 92W) WELL
NORTHWEST OF SAIPAN NEAR 16.5N141.5E DRIFTING AWAY TOWARD NORTHWEST
WITH SHOWERS AND THUNDERSTORMS WITHIN ABOUT 150 MILES OF ITS CENTER.
BUOYS RANGE FROM 3 TO 4 FT AND RITIDIAN BUOY SHOWS A SOUTHWEST WAVE
COMPONENT STARTING TO ARRIVE. VAD GRADIENT WINDS ARE SOUTHWEST 15 KT.

&&

.DISCUSSION...
THE MONSOON TROUGH HAS MOVED NORTHWARD TO JUST ABOVE SAIPAN AND
WEST TO SOUTHWEST SURFACE WINDS PREVAIL ACROSS THE FORECAST AREA.
ONLY ISOLATED SHOWERS AND THUNDERSTORMS ARE IN THE FORECAST AT
THIS TIME...BUT MODELS INDICATE THAT AN AREA OF SCATTERED SHOWERS
WILL DEVELOP JUST SOUTH OF GUAM BY MONDAY OR TUESDAY...MAINLY
BETWEEN 10N AND 13N. SOME PERIODS OF SCATTERED SHOWERS COULD YET
AFFECT OUR FORECAST ZONES DURING THE COMING WEEK.

&&

.MARINE...
CONTINUE PREVIOUS FORECAST TRENDS. SOUTHWEST SWELL AND WIND WAVES
WILL DEVELOP ACROSS THE AREA WHILE SIGNIFICANTLY LARGER AND LONGER
PERIOD SWELL MOVES OUR WAY FROM EAST-NORTHEAST THIS COMING WEEK.
THIS LONG PERIOD SWELL EMANATING FROM TYPHOON KILO MIGHT CAUSE SURF
ALONG EAST FACING REEFS TO BUILD TO HIGH SURF ADVISORY LEVELS BY
TUESDAY OR WEDNESDAY. ITS ALSO POSSIBLE THAT SEAS COULD BUILD TO
SMALL CRAFT ADVISORY LEVELS DURING THE MIDDLE OF NEXT WEEK.

&&

.EASTERN MICRONESIA...WILL BE SENT LATER.

&&

.WESTERN MICRONESIA...WILL BE SENT LATER.

&&

.GUM WATCHES/WARNINGS/ADVISORIES...
GU...NONE.
MARIANAS WATERS...NONE.
&&

$$

SIMPSON/DEVITA



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