889
FZMY50 PGUM 140047 AAA
CWFGUM

Coastal Waters Forecast for the Mariana Islands...UPDATED
National Weather Service Tiyan GU
1047 AM ChST Mon Sep 14 2026

Marianas Waters out to 40 nautical miles

PMZ150-140900-
1047 AM ChST Mon Sep 14 2026

.Synopsis for Marianas Waters...
Light to occasionally gentle winds will continue through midweek,
becoming gentle to occasionally moderate Thursday. Combined seas
of 3 to 5 feet will begin to build a bit around midweek, reaching
up to 7 feet by Thursday. Scattered showers will become numerous
tonight with isolated thunderstorms possible throughout. Gusty
winds are expected near heavier showers.

$$

PMZ151>154-140900-
MARIANAS COASTAL WATERS-
1047 AM ChST Mon Sep 14 2026

Updated to combine zones and increase winds and shower coverage
for rest of today and tonight.

.REST OF TODAY...Northeast wind 5 to 10 kt with gusts to 25 kt
near heavier showers. Seas 4 to 6 ft. Wave Detail: East 5 ft at
10 seconds. Scattered showers with isolated thunderstorms.
Locally heavy showers possible.
.TONIGHT...Northeast wind 5 to 10 kt with gusts to 25 kt near
heavier showers. Seas 4 to 6 ft. Wave Detail: Northeast 5 ft at 9
seconds and northwest 2 ft at 4 seconds. Numerous showers with
isolated thunderstorms. Locally heavy showers possible.
.TUESDAY...Northeast wind 10 kt. Seas 4 to 6 ft. Wave Detail:
Northeast 5 ft at 9 seconds and west 2 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.TUESDAY NIGHT...Northeast wind 5 kt. Seas 4 to 6 ft. Wave
Detail: Northeast 6 ft at 9 seconds. Scattered showers with
isolated thunderstorms.
.WEDNESDAY...North wind 5 kt. Seas 4 to 6 ft. Wave Detail: East
6 ft at 11 seconds.
.THURSDAY THROUGH FRIDAY...Southwest wind 5 to 15 kt. Seas 5 to
7 ft. Wave Detail: Northeast 6 ft at 10 seconds and southwest 3
ft at 4 seconds.

$$