Surf Forecast
Issued by NWS Tiyan, Guam

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FZPQ50 PGUM 091821
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
421 AM ChST Mon Mar 10 2025

.SYNOPSIS...A moderate risk of rip currents is expected along north
and east facing reefs of the Marianas for at least the next several
days.

$$

GUZ001-MPZ001>003-100930-
Guam-Rota-Tinian-Saipan-
421 AM ChST Mon Mar 10 2025

36 hour Surf Zone Forecast for the Marianas from 600 AM Monday
through 600 PM Tuesday

.TODAY THROUGH TUESDAY...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............12 seconds.
Water temperature
      Ritidian buoy..........83 Degrees.
Maximum Afternoon Heat index.........Around 96.
Coastal Winds...............Northeast at 15 to 20 mph.

.OUTLOOK...Surf is expected to increase another foot or two for
all reefs except south facing reefs by Wednesday. As this occurs,
a High Risk Of Rip Currents will likely develop for east-facing reefs,
with potentially hazardous surf developing for north-facing reefs.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.1 feet at  6:30 AM Monday
Low  tide  1.4 feet at 11:43 AM Monday
High tide  2.0 feet at  4:24 PM Monday
Low  tide -0.2 feet at 11:48 PM Monday
High tide  2.1 feet at  7:04 AM Tuesday
Low  tide  1.2 feet at 12:31 PM Tuesday

At Rota Island...
High tide  2.0 feet at  6:27 AM Monday
Low  tide  1.3 feet at 11:37 AM Monday
High tide  1.8 feet at  4:21 PM Monday
Low  tide -0.2 feet at 11:42 PM Monday
High tide  2.0 feet at  7:01 AM Tuesday
Low  tide  1.2 feet at 12:25 PM Tuesday

At Tinian Island...
High tide  1.6 feet at  6:03 AM Monday
Low  tide  1.3 feet at 10:27 AM Monday
High tide  1.8 feet at  3:13 PM Monday
Low  tide -0.1 feet at 11:13 PM Monday
High tide  1.6 feet at  6:37 AM Tuesday
Low  tide  1.2 feet at 11:20 AM Tuesday

At Tanapag Harbor, Saipan...
High tide  2.2 feet at  6:33 AM Monday
Low  tide  1.4 feet at 11:47 AM Monday
High tide  1.9 feet at  4:36 PM Monday
Low  tide -0.1 feet at 11:46 PM Monday
High tide  2.2 feet at  7:05 AM Tuesday
Low  tide  1.3 feet at 12:29 PM Tuesday

* Low Risk of rip currents - Strong currents can still occur near
jetties and reef channels. Always have a flotation device with you
in the water.

Moderate Risk of rip currents - Wave conditions support stronger
or more frequent rip currents. Always have a flotation device with
you in the water.

High Risk of rip currents - Large waves will produce strong rip
currents, especially along narrow reefs and beaches. If caught in
a rip current, swim parallel to the beach rather than against the
current.

$$