943
FZPQ50 PGUM 040600
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Fri Apr 4 2025

.DISCUSSION...A long-period northeast swell combined with a northeast
trade swell will maintain a high risk of rip currents along east
facing reefs through Saturday afternoon, along with a moderate risk
along north facing reefs. As the swell diminishes over the weekend,
the surf and rip current risk will subside as well. The rip risk is
expected to fall to moderate along east facing reefs and remain
moderate along north facing reefs for at least the next couple of
days.

$$

GUZ001-MPZ001>003-042100-
Guam-Rota-Tinian-Saipan-
400 PM ChST Fri Apr 4 2025

...HIGH RISK OF RIP CURRENTS THROUGH SATURDAY AFTERNOON ALONG EAST
FACING REEFS...

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

.TONIGHT...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................Northeast at 4 to 6 feet.
      Primary period...............10 seconds.
      Secondary swell..............Northeast at around 3 feet.
      Secondary period.............13 seconds.
Water Temperature
      Ritidian buoy..........84 Degrees.
Winds...............East at 10 to 15 mph.

.SATURDAY...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................Northeast at 4 to 6 feet.
      Primary period...............10 seconds.
      Secondary swell..............Northeast at around 3 feet.
      Secondary period.............13 seconds.
Max Heat Index.........Around 97.
Winds...............East at 10 to 15 mph.

.SATURDAY NIGHT...
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............Around 1 foot.
Swell/Period
      Primary swell................Northeast at 4 to 6 feet.
      Primary period...............10 seconds.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide -0.3 feet at  6:50 PM Friday
High tide  2.1 feet at  2:55 AM Saturday
Low  tide  1.7 feet at  7:47 AM Saturday
High tide  2.0 feet at 11:58 AM Saturday
Low  tide -0.1 feet at  8:01 PM Saturday
High tide  2.1 feet at  4:08 AM Sunday

At Rota Island...
Low  tide -0.2 feet at  6:44 PM Friday
High tide  2.0 feet at  2:52 AM Saturday
Low  tide  1.6 feet at  7:41 AM Saturday
High tide  1.9 feet at 11:55 AM Saturday
Low  tide -0.1 feet at  7:55 PM Saturday
High tide  2.0 feet at  4:05 AM Sunday

At Tinian Island...
Low  tide -0.2 feet at  6:38 PM Friday
High tide  1.7 feet at  2:46 AM Saturday
Low  tide  1.5 feet at  7:12 AM Saturday
High tide  1.7 feet at 11:20 AM Saturday
Low  tide -0.1 feet at  7:46 PM Saturday
High tide  1.7 feet at  3:45 AM Sunday

At Tanapag Harbor, Saipan...
Low  tide -0.2 feet at  7:00 PM Friday
High tide  2.2 feet at  3:21 AM Saturday
Low  tide  1.7 feet at  8:47 AM Saturday
High tide  1.8 feet at 11:52 AM Saturday
Low  tide -0.1 feet at  8:13 PM Saturday
High tide  2.2 feet at  4:27 AM Sunday

* 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.

$$