989
FPMY50 PGUM 010458
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
258 PM ChST Thu Oct 1 2026

GUZ001-MPZ001-012130-
Guam-Rota-
258 PM ChST Thu Oct 1 2026

...HIGH SURF ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 4 AM CHST MONDAY
ALONG NORTH, WEST AND SOUTH FACING REEFS...
...WIND ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 4 AM CHST SUNDAY...
...HIGH RISK OF RIP CURRENTS FROM LATE TONIGHT THROUGH LATE SUNDAY
NIGHT ALONG NORTH, WEST AND SOUTH FACING REEFS...

.TONIGHT...Mostly cloudy and breezy with numerous showers and
isolated thunderstorms. West winds 15 to 25 mph. Lows around 78.
Chance of showers 70 percent.
.FRIDAY...Partly sunny and windy with numerous showers and isolated
thunderstorms. Southwest winds 25 to 35 mph. Highs around 84. Chance
of showers 70 percent.
.FRIDAY NIGHT...Mostly cloudy and windy with scattered showers and
isolated thunderstorms. Southwest winds 25 to 35 mph. Lows around 76.
Chance of showers 50 percent.
.SATURDAY THROUGH SUNDAY...Very windy. Southwest winds 30 to 35 mph.
Mostly cloudy with scattered showers and isolated thunderstorms.
Highs around 85. Lows around 76. Chance of showers 30 percent.
.SUNDAY NIGHT AND MONDAY...Windy. Mostly cloudy. A 20 percent chance
of showers and thunderstorms. Lows in the upper 70s. Highs in the
upper 80s.
.MONDAY NIGHT AND TUESDAY...Breezy. Mostly cloudy. A 30 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly cloudy with a chance of
showers and a slight chance of thunderstorms. Lows in the lower 80s.
Highs in the mid 80s. Chance of showers 50 percent.

$$

MPZ002-003-012130-
Tinian-Saipan-
258 PM ChST Thu Oct 1 2026

...COASTAL FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING ALONG NORTH
AND WEST FACING REEFS...
...TROPICAL STORM WARNING IN EFFECT...
...FLOOD WATCH IN EFFECT FROM 10 PM CHST THIS EVENING THROUGH LATE
SUNDAY NIGHT...
...HIGH SURF ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 4 AM CHST MONDAY
ALONG NORTH AND WEST FACING REEFS...
...HIGH RISK OF RIP CURRENTS FROM LATE TONIGHT THROUGH LATE SUNDAY
NIGHT ALONG NORTH AND WEST FACING REEFS...

.TONIGHT...Cloudy and windy with widespread locally heavy showers
and isolated thunderstorms. West winds 25 to 35 mph. Lows around 77.
Chance of showers 90 percent.
.FRIDAY...Very windy. Southwest winds 30 to 35 mph. Cloudy with
widespread locally heavy showers and isolated thunderstorms. Highs
around 85. Chance of showers 90 percent.
.FRIDAY NIGHT...Southwest winds 30 to 40 mph expected. Cloudy with
numerous locally heavy showers and isolated thunderstorms. Lows
around 79. Chance of showers 70 percent.
.SATURDAY THROUGH SUNDAY...Southwest winds 35 to 45 mph expected.
Mostly cloudy with scattered showers and isolated thunderstorms.
Highs around 86. Lows around 79. Chance of showers 40 percent.
.SUNDAY NIGHT AND MONDAY...Windy. Mostly cloudy. A 20 percent chance
of showers and thunderstorms. Lows in the upper 70s. Highs in the
mid 80s.
.MONDAY NIGHT AND TUESDAY...Windy. Mostly cloudy. A 30 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly cloudy with a
40 percent chance of showers and a slight chance of thunderstorms.
Lows in the upper 70s. Highs in the mid 80s.
.THURSDAY...Partly sunny with a 20 percent chance of showers and
thunderstorms. Highs in the mid 80s.

$$