938
WWPQ82 PGUM 040800
SPSPQ2

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TIYAN GU
600 PM ChST Tue Nov 4 2025

PMZ171-050900-
YAP-
600 PM ChST Tue Nov 4 2025

...DEVELOPING CIRCULATION TO BRING HEAVY DOWNPOURS AND STRONG WINDS
TO YAP STATE...

An unsettled weather pattern extends across eastern Yap State. A
circulation, known as Invest 90W, is centered near 10N143E near
Gaferut, and embedded within the monsoon trough that extends across
western Micronesia. Invest 90W continues to consolidate and is
expected to become a tropical depression later this evening.
Scatterometer data this morning showed winds of around 25 to 30 kts
along the northeast to eastern flanks of the circulation center,
mainly associated with heavy showers and thunderstorms near 90W`s
center.

Heavy convection will continue to build over the eastern islands of
Yap State as Invest 90W consolidates. Model guidance indicates 90W
will slowly move northwest over the next few days, likely passing
between Yap and the Marianas. This will drag the monsoon trough
north and west, pulling the heavy showers further west across Yap
State and towards Yap Proper and surrounding islands. Strong to
gale-force west to southwest monsoonal winds and gusts and heavy
showers and thunderstorms will make inter-island travel hazardous and
potentially dangerous at times through the week. Surf will be
elevated due to the background westerly swell from the monsoon
pattern and swell being generated from Invest 90W. Elevated surf,
along with elevated King Tides around the full moon on Wednesday, may
lead to minor splashup/runup on beaches, mainly along south and west
facing shores.

Residents and mariners should monitor the latest forecasts for the
region at weather.gov/gum/PublicForecasts and any information shared
by WSO Yap for their local regions.

$$

PMZ172-050900-
CHUUK-
600 PM ChST Tue Nov 4 2025

...DEVELOPING CIRCULATION BRINGING HEAVY DOWNPOURS AND STRONG WINDS
TO WESTERN CHUUK STATE...
...CONDITIONS TO SLOWLY IMPROVE AS CIRCULATION MOVES WEST-NORTHWEST
OVER THE NEXT FEW DAYS...

A circulation, known as Invest 90W, is centered near 10N143E near
Gaferut in Yap State, and embedded within the monsoon trough that
extends across western Micronesia. Invest 90W continues to
consolidate and is expected to become a tropical depression later
this evening. Scatterometer data this morning showed winds of around
25 to 30 kts along the northeast to eastern flanks of the circulation
center, mainly associated with heavy showers and thunderstorms near
90W`s center.

Western Chuuk State is currently on the eastern edge of the monsoon
trough and gusty winds associated with heavy showers and
thunderstorms developing around 90W. As 90W continues to move west-
northwest and away from Chuuk State over the next couple of days,
conditions will gradually improve across western Chuuk State. Seas
and surf may remain choppy and elevated, especially along south and
west facing reefs, due to the westerly swell generated by the monsoon
pattern and as 90W slowly develops. Tides will be elevated for a few
days due to the King Tides associated with the full moon on
Wednesday, and along with elevated surf, may lead to minor
splashup/runup on beaches, mainly south and west facing shores.

Residents and mariners should monitor the latest forecasts for the
region at weather.gov/gum/PublicForecasts and any information shared
by WSO Chuuk for their local regions.

$$

Schank