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FZPQ50 PGUM 220644
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
444 PM ChST Tue Apr 22 2025

.DISCUSSION...A moderate risk of rip currents is expected along east
facing reefs, while a low risk is expected elsewhere. Surf is expected
to begin to increase along all reefs slowly starting Thursday,
allowing rip current risk to potentially become moderate along north
facing reefs as well during the weekend.

$$

GUZ001-MPZ001>003-222000-
Guam-Rota-Tinian-Saipan-
444 PM ChST Tue Apr 22 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............Around 1 foot.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at around 4 feet.
      Primary period...............8 to 9 seconds.
Water Temperature
      Tanapag buoy..........84 Degrees.
Winds...............East at 10 to 15 mph.

.WEDNESDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............Around 1 foot.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at around 4 feet.
      Primary period...............8 to 9 seconds.
Max Heat Index.........Around 98.
Winds...............East at 10 to 15 mph.

.WEDNESDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............Around 1 foot.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at around 4 feet.
      Primary period...............8 to 9 seconds.
Winds...............East at 10 to 15 mph.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.2 feet at  9:00 PM Tuesday
High tide  2.3 feet at  4:36 AM Wednesday
Low  tide  1.4 feet at 10:18 AM Wednesday
High tide  2.0 feet at  3:06 PM Wednesday
Low  tide  0.3 feet at 10:00 PM Wednesday
High tide  2.4 feet at  5:06 AM Thursday

At Rota Island...
Low  tide  0.2 feet at  8:54 PM Tuesday
High tide  2.2 feet at  4:33 AM Wednesday
Low  tide  1.4 feet at 10:12 AM Wednesday
High tide  1.9 feet at  3:03 PM Wednesday
Low  tide  0.2 feet at  9:54 PM Wednesday
High tide  2.3 feet at  5:03 AM Thursday

At Tinian Island...
Low  tide  0.1 feet at  8:42 PM Tuesday
High tide  1.6 feet at  4:06 AM Wednesday
Low  tide  1.1 feet at  9:36 AM Wednesday
High tide  1.5 feet at  2:12 PM Wednesday
Low  tide  0.2 feet at  9:30 PM Wednesday
High tide  1.7 feet at  4:30 AM Thursday

At Tanapag Harbor, Saipan...
Low  tide  0.1 feet at  9:10 PM Tuesday
High tide  2.2 feet at  4:44 AM Wednesday
Low  tide  1.2 feet at 10:34 AM Wednesday
High tide  1.7 feet at  3:15 PM Wednesday
Low  tide  0.2 feet at 10:05 PM Wednesday
High tide  2.2 feet at  5:11 AM Thursday

* 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.

$$