096
FZMY50 PGUM 010637
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
437 PM ChST Sat Nov 1 2025

Marianas Waters out to 40 nautical miles

PMZ150-012100-
437 PM ChST Sat Nov 1 2025

.Synopsis for Marianas Waters...
The outer edge of a trade-wind surge has moved into the Marianas,
bringing moderate to fresh winds and combined seas of 6 to 8 feet.
These conditions are expected to persist through the week. The
trade-wind surge could be enhanced by a circulation from Invest
99W, which could lead to conditions hazardous to small craft for
portions of the Marianas later in the week.

$$

PMZ151>154-012100-
MARIANAS COASTAL WATERS-
437 PM ChST Sat Nov 1 2025

.TONIGHT...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail:
Northeast 6 ft at 9 seconds, east 3 ft at 4 seconds and northwest
2 ft at 10 seconds.
.SUNDAY...East wind 15 to 20 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 6 ft at 9 seconds, east 4 ft at 4 seconds and northwest
2 ft at 12 seconds.
.SUNDAY NIGHT...East wind 15 to 20 kt. Seas 6 to 7 ft. Wave
Detail: Northeast 6 ft at 9 seconds, east 4 ft at 4 seconds and
north 2 ft at 11 seconds. Scattered showers with isolated
thunderstorms.
.MONDAY...East wind 15 to 20 kt with gusts to 30 kt. Seas 7 to 8
ft. Wave Detail: Northeast 6 ft at 8 seconds, east 4 ft at 4
seconds and north 2 ft at 10 seconds. Scattered showers.
.MONDAY NIGHT...East wind 20 kt with gusts to 30 kt. Seas 7 to
8 ft. Wave Detail: East-northeast 6 ft at 8 seconds, east 4 ft at
4 seconds and north 2 ft at 9 seconds. Scattered showers.
.TUESDAY THROUGH WEDNESDAY...East wind 10 to 20 kt. Seas 6 to
8 ft. Wave Detail: East 6 ft at 7 seconds, east 4 ft at 4 seconds
and northwest 2 ft at 8 seconds. A chance of showers with a
slight chance of thunderstorms.
.THURSDAY...South wind 10 to 20 kt. Seas 7 to 8 ft. Wave Detail:
East 7 ft at 9 seconds, south 5 ft at 4 seconds and north 2 ft at
9 seconds. A chance of showers with a slight chance of
thunderstorms.

$$