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FZPQ50 PGUM 271811
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
411 AM ChST Fri Mar 28 2025

.SYNOPSIS...There will be a moderate risk of rip currents along north
and east facing reefs of the Marianas through the weekend, which could
briefly become high along east facing reefs around Sunday night.

$$

GUZ001-MPZ001>003-280915-
Guam-Rota-Tinian-Saipan-
411 AM ChST Fri Mar 28 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............3 to 5 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 2 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at around 2 feet.
      Secondary period.............11 seconds.
Water Temperature buoy..........83 Degrees.
Maximum Afternoon Heat Index.........Around 96.
Coastal Winds...............East at 10 to 15 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 3 to 5 feet.
      Primary period...............8 seconds.
Coastal Winds...............East at 15 to 20 mph.

.SATURDAY...
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 6 feet.
      Primary period...............8 seconds.
Maximum Afternoon Heat Index.........Around 97.
Coastal Winds...............East at 15 to 20 mph.

.OUTLOOK...Surf along east facing reefs could increase 1 to 2 feet
briefly around Sunday night, possibly increasing the risk of rip
currents to high, then becoming moderate again fairly quickly.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.4 feet at  7:04 AM Friday
Low  tide  0.8 feet at 12:57 PM Friday
High tide  2.5 feet at  6:43 PM Friday
Low  tide  0.1 feet at  1:12 AM Saturday
High tide  2.5 feet at  7:29 AM Saturday
Low  tide  0.5 feet at  1:39 PM Saturday
High tide  2.6 feet at  7:41 PM Saturday

At Rota Island...
High tide  2.3 feet at  7:01 AM Friday
Low  tide  0.8 feet at 12:51 PM Friday
High tide  2.3 feet at  6:40 PM Friday
Low  tide  0.1 feet at  1:06 AM Saturday
High tide  2.3 feet at  7:26 AM Saturday
Low  tide  0.4 feet at  1:33 PM Saturday
High tide  2.4 feet at  7:38 PM Saturday

At Tinian Island...
High tide  1.7 feet at  6:27 AM Friday
Low  tide  0.8 feet at 12:07 PM Friday
High tide  1.8 feet at  5:55 PM Friday
Low  tide  0.3 feet at 12:34 AM Saturday
High tide  1.7 feet at  6:49 AM Saturday
Low  tide  0.6 feet at 12:58 PM Saturday
High tide  1.8 feet at  7:02 PM Saturday

At Tanapag Harbor, Saipan...
High tide  2.2 feet at  7:08 AM Friday
Low  tide  0.8 feet at 12:54 PM Friday
High tide  2.2 feet at  6:52 PM Friday
Low  tide  0.2 feet at  1:12 AM Saturday
High tide  2.2 feet at  7:33 AM Saturday
Low  tide  0.4 feet at  1:39 PM Saturday
High tide  2.3 feet at  7:53 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.

$$