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FZPQ50 PGUM 221800
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 AM ChST Thu Jan 23 2025

.SYNOPSIS...There is a moderate risk of rip currents for north and
east facing reefs through the end of the week with a low risk
of rip currents for south and west facing reefs.

$$

GUZ001-MPZ001>003-230830-
Guam-Rota-Tinian-Saipan-
400 AM ChST Thu Jan 23 2025

36 hour Surf Zone Forecast for the Marianas from 600 AM Thursday
through 600 PM Friday

.TODAY (6 AM TO 6 PM)...
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............2 to 4 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............11 seconds.
Water temperature
      Tanapag buoy..........83 Degrees.
Maximum afternoon heat index...........Around 95.
Coastal Winds............East at 15 to 20 mph.


.TONIGHT (6 PM TO 6 AM FRIDAY)...
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............2 to 4 feet.
Swell/Period
      Primary swell................East at 5 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............9 seconds.
Coastal Winds............East at 15 to 20 mph.


.FRIDAY (6 AM TO 6 PM)...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 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 4 feet.
      Secondary period.............9 seconds.
Maximum afternoon heat index...........Around 95.
Coastal Winds............East at 15 to 20 mph.

.OUTLOOK...Surf along north facing reefs could increase another 1 or 2
feet by the weekend as a larger pulse of north swell drops into the
area. This would maintain at least a moderate risk of rip currents
through the weekend along north facing shores. Meanwhile, surf along
east facing reefs may decrease 1 to 2 feet as the east swell
diminishes slightly, but should maintain a moderate risk of rip
currents this weekend.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  1.4 feet at  3:50 AM Thursday
Low  tide  1.2 feet at  7:33 AM Thursday
High tide  1.9 feet at  1:34 PM Thursday
Low  tide  0.1 feet at  9:29 PM Thursday
High tide  1.5 feet at  5:28 AM Friday
Low  tide  1.4 feet at  8:56 AM Friday
High tide  1.8 feet at  2:19 PM Friday

At Rota Island...
High tide  1.3 feet at  3:47 AM Thursday
Low  tide  1.1 feet at  7:27 AM Thursday
High tide  1.8 feet at  1:31 PM Thursday
Low  tide  0.1 feet at  9:23 PM Thursday
High tide  1.4 feet at  5:25 AM Friday
Low  tide  1.3 feet at  8:50 AM Friday
High tide  1.7 feet at  2:16 PM Friday

At Tinian Island...
High tide  1.2 feet at  3:40 AM Thursday
Low  tide  1.1 feet at  6:36 AM Thursday
High tide  1.7 feet at  1:00 PM Thursday
Low  tide  0.2 feet at  9:18 PM Thursday
High tide  1.3 feet at  5:26 AM Friday
Low  tide  1.3 feet at  7:28 AM Friday
High tide  1.7 feet at  1:32 PM Friday

At Tanapag Harbor, Saipan...
High tide  1.4 feet at  4:55 AM Thursday
Low  tide  1.4 feet at  7:16 AM Thursday
High tide  2.0 feet at  1:31 PM Thursday
Low  tide  0.3 feet at  9:51 PM Thursday
High tide  1.6 feet at  6:09 AM Friday
Low  tide  1.6 feet at  8:48 AM Friday
High tide  2.0 feet at  2:06 PM Friday

* 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.

$$