028
FZPQ50 PGUM 161803
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
403 AM ChST Mon Mar 17 2025

.SYNOPSIS...There will be a moderate risk of rip currents along north
and east facing reefs through Tuesday.
$$

GUZ001-MPZ001>003-171000-
Guam-Rota-Tinian-Saipan-
403 AM ChST Mon Mar 17 2025

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

.TODAY...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............11 seconds.
Water temperature
      Ritidian buoy.......... 83 Degrees.
Maximum Afternoon Heat index.........Around 98.
Coastal Winds...............East at 10 to 15 mph.


.TONIGHT...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............12 seconds.
Coastal Winds...............East at 10 to 15 mph.


.TUESDAY...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............3 to 5 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 2 to 5 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............11 seconds.
Maximum Afternoon Heat index.........Around 99.
Coastal Winds...............East at 10 to 15 mph.

.OUTLOOK...Surf is expected to fall 1 to 2 feet along north and east
facing reefs by Tuesday night, allowing the rip current risk to
become low along north facing reefs, but will remain moderate along
east facing reefs. Building seas later in the week could increase the
risk to moderate along north and possibly west facing reefs.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.1 feet at  9:06 AM Monday
Low  tide  0.3 feet at  3:42 PM Monday
High tide  2.0 feet at  9:56 PM Monday
Low  tide  0.9 feet at  3:49 AM Tuesday
High tide  2.1 feet at  9:25 AM Tuesday
Low  tide  0.2 feet at  4:15 PM Tuesday

At Rota Island...
High tide  2.0 feet at  9:03 AM Monday
Low  tide  0.3 feet at  3:36 PM Monday
High tide  1.9 feet at  9:53 PM Monday
Low  tide  0.9 feet at  3:43 AM Tuesday
High tide  2.0 feet at  9:22 AM Tuesday
Low  tide  0.2 feet at  4:09 PM Tuesday

At Tinian Island...
High tide  1.6 feet at  8:28 AM Monday
Low  tide  0.5 feet at  3:27 PM Monday
High tide  1.5 feet at  9:53 PM Monday
Low  tide  1.0 feet at  3:22 AM Tuesday
High tide  1.6 feet at  8:45 AM Tuesday
Low  tide  0.4 feet at  4:05 PM Tuesday

At Tanapag Harbor, Saipan...
High tide  2.0 feet at  9:10 AM Monday
Low  tide  0.4 feet at  3:43 PM Monday
High tide  1.8 feet at 10:13 PM Monday
Low  tide  1.1 feet at  3:40 AM Tuesday
High tide  1.9 feet at  9:24 AM Tuesday
Low  tide  0.3 feet at  4:16 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.

$$