548
FZPQ50 PGUM 031813
SRFGUM

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

.DISCUSSION...A high risk of rip currents will continue for east
facing reefs of the Marianas over the next few days as a long-period
northeast swell moves through the region. This will also maintain
a moderate risk of rip currents for north facing reefs. Swell and
corresponding surf will diminish this weekend through early next week,
allowing the risk of rip currents to drop as well.

$$

GUZ001-MPZ001>003-041000-
Guam-Rota-Tinian-Saipan-
413 AM 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 AM Friday
through 600 PM Saturday

.TODAY...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................Northeast at 5 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............Northeast at around 3 feet.
      Secondary period.............14 seconds.
Water Temperature
      Ritidian buoy.......... 83 Degrees.
Max Heat Index.........Around 96.
Winds...............East at 10 to 15 mph.

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

.SATURDAY...
Rip Current Risk.....Moderate *.
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.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.7 feet at  6:21 AM Friday
High tide  2.2 feet at 10:56 AM Friday
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

At Rota Island...
Low  tide  1.6 feet at  6:15 AM Friday
High tide  2.1 feet at 10:53 AM Friday
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

At Tinian Island...
Low  tide  1.5 feet at  5:52 AM Friday
High tide  1.8 feet at 10:16 AM Friday
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

At Tanapag Harbor, Saipan...
Low  tide  1.8 feet at  7:01 AM Friday
High tide  2.0 feet at 10:40 AM Friday
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 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.

$$