Zone Forecast Product
Issued by NWS Tiyan, Guam

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FPMY50 PGUM 210613
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
413 PM ChST Fri Nov 21 2025

GUZ001-212030-
Guam-
413 PM ChST Fri Nov 21 2025

...HIGH RIP CURRENT RISK IN EFFECT THROUGH LATE MONDAY NIGHT ALONG
NORTH AND EAST FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM CHST TUESDAY ALONG NORTH
FACING REEFS...

.TONIGHT...Breezy. Mostly cloudy with scattered showers and isolated
thunderstorms developing. East winds 15 to 25 mph. Lows around 77.
Chance of showers 40 percent.
.SATURDAY...Breezy. Partly sunny with scattered showers and isolated
thunderstorms. East winds 20 to 25 mph. Highs near 86. Chance of
showers 30 percent.
.SATURDAY NIGHT...Breezy. Partly cloudy with isolated showers. East
winds 15 to 25 mph. Lows around 79. Chance of showers 20 percent.
.SUNDAY...Breezy. Partly cloudy with isolated showers. East winds
20 to 25 mph. Highs near 87. Chance of showers 20 percent.
.SUNDAY NIGHT...Partly cloudy with isolated showers. East winds 15
to 20 mph. Lows around 78. Chance of showers 20 percent.
.MONDAY...Breezy. Partly cloudy with isolated showers. East winds
20 to 25 mph. Highs near 88. Chance of showers 20 percent.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy with a 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.
.WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.THANKSGIVING DAY...Partly sunny with a 20 percent chance of
showers. Highs in the upper 80s.
.THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of showers
and thunderstorms. Lows in the upper 70s.
.FRIDAY...Partly sunny with a 30 percent chance of showers and a
slight chance of thunderstorms. Highs in the upper 80s.

$$

MPZ001>003-212030-
Rota-Tinian-Saipan-
413 PM ChST Fri Nov 21 2025

...HIGH RIP CURRENT RISK IN EFFECT THROUGH LATE MONDAY NIGHT ALONG
NORTH AND EAST FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM CHST TUESDAY ALONG NORTH
FACING REEFS...

.TONIGHT...Breezy. Partly cloudy with isolated showers and
thunderstorms. East winds 20 to 25 mph. Lows around 79. Chance of
showers 20 percent.
.SATURDAY...Breezy. Partly cloudy with isolated showers and
thunderstorms. East winds 20 to 25 mph. Highs near 86. Chance of
showers 20 percent.
.SATURDAY NIGHT...Breezy. Partly cloudy with isolated showers. East
winds 20 to 25 mph. Lows around 80. Chance of showers 20 percent.
.SUNDAY THROUGH MONDAY...Breezy. Partly cloudy with isolated
showers. East winds 20 to 25 mph. Highs near 87. Lows around 79.
Chance of showers 20 percent.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy with a 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.
.WEDNESDAY NIGHT AND THANKSGIVING DAY...Mostly cloudy. A 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A 20 percent chance of
showers and thunderstorms. Lows in the upper 70s. Highs in the upper
80s.

$$