768
FZPQ50 PGUM 101831
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
431 AM ChST Tue Nov 11 2025

.DISCUSSION...A moderate risk of rip currents is expected along
west, north, and east facing reefs of the Marianas for at least the
next few days. Surf is expected to be elevated but remain below
hazardous levels along all reefs for much of this week. As various
swells (trade swell, northerly swell, westerly swell) begin to
diminish, surf may drop enough to allow the rip current risk to drop
to low along east and west facing reefs before Friday.

$$

GUZ001-MPZ001>003-110800-
Guam-Rota-Tinian-Saipan-
431 AM ChST Tue Nov 11 2025

Updated to correct expiration time

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

.TODAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............4 to 6 feet.
Swell/Period
      Primary swell................North at 4 to 5 feet.
      Primary period...............10 seconds.
      Secondary swell..............West at around 4 feet.
      Secondary period.............10 seconds.
      Tertiary swell...............
      Tertiary period..............
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 101.
Winds...............East at 10 to 15 mph.

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............4 to 6 feet.
Swell/Period
      Primary swell................North at 3 to 5 feet.
      Primary period...............10 seconds.
      Secondary swell..............East at around 3 feet.
      Secondary period.............10 seconds.
Winds...............East at 10 to 15 mph.

.WEDNESDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............3 to 5 feet.
Swell/Period
      Primary swell................East at 3 to 5 feet.
      Primary period...............9 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............12 seconds.
Max Heat Index.........Around 101.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide -0.5 feet at  5:53 AM Tuesday
High tide  2.2 feet at  1:55 PM Tuesday
Low  tide  1.5 feet at  7:16 PM Tuesday
High tide  1.8 feet at 11:05 PM Tuesday
Low  tide -0.2 feet at  6:57 AM Wednesday
High tide  2.1 feet at  2:53 PM Wednesday

At Rota Island...
Low  tide -0.5 feet at  5:47 AM Tuesday
High tide  2.0 feet at  1:52 PM Tuesday
Low  tide  1.4 feet at  7:10 PM Tuesday
High tide  1.7 feet at 11:02 PM Tuesday
Low  tide -0.2 feet at  6:51 AM Wednesday
High tide  2.0 feet at  2:50 PM Wednesday

At Tinian Island...
Low  tide -0.5 feet at  5:38 AM Tuesday
High tide  1.6 feet at  1:51 PM Tuesday
Low  tide  1.3 feet at  6:41 PM Tuesday
High tide  1.5 feet at 10:19 PM Tuesday
Low  tide -0.3 feet at  6:37 AM Wednesday
High tide  1.6 feet at  2:33 PM Wednesday

At Tanapag Harbor, Saipan...
Low  tide -0.3 feet at  6:02 AM Tuesday
High tide  2.3 feet at  2:03 PM Tuesday
Low  tide  1.6 feet at  7:51 PM Tuesday
High tide  1.8 feet at 11:09 PM Tuesday
Low  tide -0.1 feet at  7:06 AM Wednesday
High tide  2.2 feet at  2:59 PM Wednesday

* 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. Rip currents
will be life threatening. If caught in a rip current, swim parallel
to the beach rather than against the current.

$$