437
FZPQ50 PGUM 190552
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
352 PM ChST Sat Apr 19 2025

.DISCUSSION...A moderate risk of rip currents is expected to
continue along east facing reefs through the weekend and along north
facing reefs through Sunday. The primary trade swell is slowly
subsiding, and surf will gradually decrease along north and east
facing reefs. The risk of rip currents is expected to remain
moderate for east facing reefs over the next several days.

$$

GUZ001-MPZ001>003-192200-
Guam-Rota-Tinian-Saipan-
352 PM ChST Sat Apr 19 2025

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

.TONIGHT...
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............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 5 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at around 2 feet.
      Secondary period.............10 seconds.
Water Temperature
      Ritidian buoy..........84 Degrees.
Winds...............East at 10 to 15 mph.

.SUNDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 3 to 5 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at around 2 feet.
      Secondary period.............9 seconds.
Max Heat Index.........Around 98.
Winds...............East at 10 to 15 mph.

.SUNDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............around 1 foot.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at around 2 feet.
      Secondary period.............9 seconds.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.0 feet at  5:54 PM Saturday
High tide  2.1 feet at  1:54 AM Sunday
Low  tide  1.8 feet at  6:54 AM Sunday
High tide  2.0 feet at 10:54 AM Sunday
Low  tide  0.1 feet at  6:54 PM Sunday
High tide  2.1 feet at  3:06 AM Monday

At Rota Island...
Low  tide  0.0 feet at  5:48 PM Saturday
High tide  2.0 feet at  1:51 AM Sunday
Low  tide  1.7 feet at  6:48 AM Sunday
High tide  1.9 feet at 10:51 AM Sunday
Low  tide  0.1 feet at  6:48 PM Sunday
High tide  2.0 feet at  3:03 AM Monday

At Tinian Island...
Low  tide  0.0 feet at  5:48 PM Saturday
High tide  1.6 feet at  2:24 AM Sunday
Low  tide  1.5 feet at  6:30 AM Sunday
High tide  1.6 feet at 10:06 AM Sunday
Low  tide  0.0 feet at  6:48 PM Sunday
High tide  1.6 feet at  3:12 AM Monday

At Tanapag Harbor, Saipan...
Low  tide  0.0 feet at  6:05 PM Saturday
High tide  2.0 feet at  2:25 AM Sunday
Low  tide  1.7 feet at  7:50 AM Sunday
High tide  1.8 feet at 10:09 AM Sunday
Low  tide  0.1 feet at  7:06 PM Sunday
High tide  2.1 feet at  3:28 AM Monday

* 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.

$$