488
FZPQ50 PGUM 221837
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
437 AM ChST Fri May 23 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs of the Marianas through Saturday, with
a low risk for south and west facing reefs. All reefs may have a
low risk after Saturday.

$$

GUZ001-MPZ001>003-230945-
Guam-Rota-Tinian-Saipan-
437 AM ChST Fri May 23 2025

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

.TODAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................Northeast at 3 to 5 feet.
      Primary period...............8 seconds.
Water Temperature
      Ipan buoy..........84 Degrees.
Max Heat Index.........Around 97.
Winds...............East at around 10 mph.

.TONIGHT...
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 2 to 4 feet.
      Primary period...............8 seconds.
Winds...............East at around 10 mph.

.SATURDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 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 2 to 4 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 96.
Winds...............East at around 10 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.6 feet at  3:54 AM Friday
Low  tide  0.8 feet at 10:36 AM Friday
High tide  2.2 feet at  4:36 PM Friday
Low  tide  1.0 feet at 10:12 PM Friday
High tide  2.7 feet at  4:30 AM Saturday
Low  tide  0.4 feet at 11:24 AM Saturday
High tide  2.4 feet at  5:54 PM Saturday

At Rota Island...
High tide  2.5 feet at  3:51 AM Friday
Low  tide  0.8 feet at 10:30 AM Friday
High tide  2.0 feet at  4:33 PM Friday
Low  tide  0.9 feet at 10:06 PM Friday
High tide  2.5 feet at  4:27 AM Saturday
Low  tide  0.3 feet at 11:18 AM Saturday
High tide  2.2 feet at  5:51 PM Saturday

At Tinian Island...
High tide  1.8 feet at  3:18 AM Friday
Low  tide  0.5 feet at 10:06 AM Friday
High tide  1.4 feet at  4:00 PM Friday
Low  tide  0.7 feet at  9:30 PM Friday
High tide  1.9 feet at  3:42 AM Saturday
Low  tide  0.1 feet at 10:54 AM Saturday
High tide  1.5 feet at  5:30 PM Saturday

At Tanapag Harbor, Saipan...
High tide  2.3 feet at  4:00 AM Friday
Low  tide  0.5 feet at 10:42 AM Friday
High tide  1.7 feet at  4:52 PM Friday
Low  tide  0.8 feet at 10:12 PM Friday
High tide  2.3 feet at  4:29 AM Saturday
Low  tide  0.1 feet at 11:23 AM Saturday
High tide  1.9 feet at  6:10 PM Saturday

* 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.

$$