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Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
343 AM ChST Tue May 21 2024

.SYNOPSIS...A high risk for rip currents will persist through
Wednesday along east facing reefs, with moderate risk along north
facing reefs. A moderate risk for lighting is possible through
Wednesday for Guam.

$$

GUZ001-MPZ001>003-210845-
Guam-Rota-Tinian-Saipan-
343 AM ChST Tue May 21 2024

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

36 hour Surf Zone Forecast for the Marianas from 600 AM Tuesday
through 600 PM Wednesday

.TODAY THROUGH WEDNESDAY (6 AM TO 6 PM WEDNESDAY)...
Rip current risk.....High *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 to 10 seconds.
      Secondary swell..............Northeast at 1 to 2 feet.
      Secondary period.............15 seconds.
Water temperature
      Satellite estimates..........83 to 85 Degrees.
Maximum afternoon heat index.......Around 100.
Coastal Winds......................East at 10 to 20 mph.

.OUTLOOK...Surf looks to lower beginning Wednesday night as
the trade swell diminishes, with the rip risk possibly
decreasing along north and east facing reefs.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.4 feet at  5:31 AM Tuesday
Low  tide  0.3 feet at 12:29 PM Tuesday
High tide  2.3 feet at  7:21 PM Tuesday
Low  tide  1.5 feet at 12:30 AM Wednesday
High tide  2.4 feet at  5:55 AM Wednesday
Low  tide  0.1 feet at  1:02 PM Wednesday
High tide  2.4 feet at  8:06 PM Wednesday

At Rota Island...
High tide  2.3 feet at  5:28 AM Tuesday
Low  tide  0.3 feet at 12:23 PM Tuesday
High tide  2.1 feet at  7:18 PM Tuesday
Low  tide  1.4 feet at 12:24 AM Wednesday
High tide  2.3 feet at  5:52 AM Wednesday
Low  tide  0.1 feet at 12:56 PM Wednesday
High tide  2.2 feet at  8:03 PM Wednesday

At Tinian Island...
High tide  1.7 feet at  4:36 AM Tuesday
Low  tide  0.1 feet at 12:03 PM Tuesday
High tide  1.5 feet at  7:11 PM Tuesday
Low  tide  1.2 feet at 11:32 PM Tuesday
High tide  1.7 feet at  4:55 AM Wednesday
Low  tide  0.0 feet at 12:37 PM Wednesday
High tide  1.6 feet at  8:05 PM Wednesday

At Tanapag Harbor, Saipan...
High tide  2.1 feet at  5:25 AM Tuesday
Low  tide  0.1 feet at 12:29 PM Tuesday
High tide  1.8 feet at  7:39 PM Tuesday
Low  tide  1.4 feet at 11:57 PM Tuesday
High tide  2.1 feet at  5:45 AM Wednesday
Low  tide -0.1 feet at  1:04 PM Wednesday
High tide  1.9 feet at  8:29 PM Wednesday

* 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.

$$