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FZPQ50 PGUM 190628
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
428 PM ChST Thu Sep 19 2024

.SYNOPSIS...There will be a moderate risk of rip currents along east
and west facing reefs of the Marianas through Friday. The risk of rip
currents is now expected to become low Friday night as the west and
east swells decrease slightly. There is a moderate risk of lightning
through tonight.

$$

GUZ001-MPZ001>003-192130-
Guam-Rota-Tinian-Saipan-
428 PM ChST Thu Sep 19 2024

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

.TONIGHT AND FRIDAY (6 PM TO 6 PM FRIDAY)...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............3 to 5 feet.
Swell/Period
      Primary swell................East at around 3 feet.
      Primary period...............9 seconds.
      Secondary swell..............West at around 3 feet.
      Secondary period.............10 seconds.
Water temperature
      Tanapag buoy..........85 Degrees.
Coastal Winds............East at around 10 mph, becoming 10 to 15 mph
                         Friday.


.FRIDAY NIGHT (6 PM TO 6 AM SATURDAY)...
Rip current risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............2 to 4 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 2 to 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............West at around 2 feet.
      Secondary period.............10 seconds.
Coastal Winds............East at around 10 mph.

.OUTLOOK...Little change through Saturday, then surf may start to
build 1 to 2 feet along east facing reefs Sunday as the east swell
increases.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.6 feet at  8:26 PM Thursday
Low  tide  0.3 feet at  2:50 AM Friday
High tide  2.6 feet at  8:59 AM Friday
Low  tide  0.7 feet at  3:09 PM Friday
High tide  2.6 feet at  8:55 PM Friday
Low  tide  0.0 feet at  3:37 AM Saturday
High tide  2.5 feet at 10:02 AM Saturday

At Rota Island...
High tide  2.5 feet at  8:23 PM Thursday
Low  tide  0.3 feet at  2:44 AM Friday
High tide  2.5 feet at  8:56 AM Friday
Low  tide  0.6 feet at  3:03 PM Friday
High tide  2.4 feet at  8:52 PM Friday
Low  tide  0.0 feet at  3:31 AM Saturday
High tide  2.4 feet at  9:59 AM Saturday

At Tinian Island...
High tide  1.7 feet at  7:50 PM Thursday
Low  tide  0.2 feet at  2:23 AM Friday
High tide  1.6 feet at  8:29 AM Friday
Low  tide  0.5 feet at  2:31 PM Friday
High tide  1.7 feet at  8:16 PM Friday
Low  tide  0.0 feet at  3:16 AM Saturday
High tide  1.5 feet at  9:45 AM Saturday

At Tanapag Harbor, Saipan...
High tide  2.2 feet at  8:39 PM Thursday
Low  tide  0.3 feet at  2:56 AM Friday
High tide  2.3 feet at  9:15 AM Friday
Low  tide  0.6 feet at  3:19 PM Friday
High tide  2.2 feet at  9:06 PM Friday
Low  tide  0.0 feet at  3:43 AM Saturday
High tide  2.2 feet at 10:23 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.

$$