739
FZPQ50 PGUM 191800
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 AM ChST Sun Apr 20 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs of the Marianas today. The risk will
diminish to moderate tonight along north facing reefs, but will
continue along east facing reefs through Monday night. Surf will
diminish along north and east facing reefs through Tuesday, when
the risk of rip currents will be moderate.

$$

GUZ001-MPZ001>003-200845-
Guam-Rota-Tinian-Saipan-
400 AM ChST Sun Apr 20 2025

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

.TODAY...
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............Around 1 foot.
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.
Water Temperature
      Ritidian buoy..........84 Degrees.
Max Heat Index.........Around 98.
Winds...............East at 10 to 15 mph.

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

.MONDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 1 to 2 feet.
      Secondary period.............10 seconds.
Max Heat Index.........Around 99.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
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
Low  tide  1.8 feet at  8:12 AM Monday
High tide  2.0 feet at 12:06 PM Monday
Low  tide  0.1 feet at  8:00 PM Monday

At Rota Island...
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
Low  tide  1.6 feet at  8:06 AM Monday
High tide  1.9 feet at 12:03 PM Monday
Low  tide  0.1 feet at  7:54 PM Monday

At Tinian Island...
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
Low  tide  1.4 feet at  7:42 AM Monday
High tide  1.6 feet at 11:18 AM Monday
Low  tide  0.0 feet at  7:48 PM Monday

At Tanapag Harbor, Saipan...
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  tide  1.6 feet at  9:15 AM Monday
High tide  1.7 feet at 11:50 AM Monday
Low  tide  0.1 feet at  8:08 PM 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.

$$