392
FZPQ50 PGUM 221858
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
458 AM ChST Thu May 23 2024

.SYNOPSIS...A high risk of rip currents along east facing reefs will
become moderate today. Otherwise, there will be a moderate risk of
rip currents along north facing reefs and a low risk along south and
west facing reefs.

$$

GUZ001-MPZ001>003-230800-
Guam-Rota-Tinian-Saipan-
458 AM ChST Thu May 23 2024

...HIGH RISK OF RIP CURRENTS UNTIL 6 AM CHST EARLY THIS
MORNING...

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

.TODAY (6 AM TO 6 PM)...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 5 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............Northeast at around 3 feet.
      Secondary period.............13 seconds.
Water temperature
      MODIS Satellite..............84 Degrees.
Maximum afternoon heat index...........Around 102.
Coastal Winds............East at 10 to 20 mph.

.TONIGHT AND FRIDAY (6 PM TO 6 PM FRIDAY)...
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............1 to 3 feet.
Swell/Period
      Primary swell................East at 5 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at around 3 feet.
      Secondary period.............12 seconds.
Coastal Winds............East at 10 to 20 mph.

.OUTLOOK...Surf will subside another 1 to 2 feet along north and
east facing reefs over the weekend. Thunderstorms could spread
northward into southern Guam waters and bring a slight risk of
lightning through Friday night.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low tide -0.1 feet at 1:36 PM Thursday
High tide 2.4 feet at 8:50 PM Thursday
Low tide  1.7 feet at 2:03 AM Friday
High tide 2.4 feet at 6:52 AM Friday
Low tide -0.2 feet at 2:12 PM Friday
High tide 2.5 feet at 9:34 PM Friday

At Rota Island...
Low  tide -0.1 feet at  1:30 PM Thursday
High tide  2.3 feet at  8:47 PM Thursday
Low  tide  1.6 feet at  1:57 AM Friday
High tide  2.3 feet at  6:49 AM Friday
Low  tide -0.2 feet at  2:06 PM Friday
High tide  2.3 feet at  9:31 PM Friday

At Tinian Island...
Low  tide -0.1 feet at  1:12 PM Thursday
High tide  1.7 feet at  8:58 PM Thursday
Low  tide  1.5 feet at  1:05 AM Friday
High tide  1.8 feet at  5:43 AM Friday
Low  tide -0.2 feet at  1:50 PM Friday
High tide  1.7 feet at  9:53 PM Friday

At Tanapag Harbor, Saipan...
Low  tide -0.2 feet at  1:42 PM Thursday
High tide  2.1 feet at  9:18 PM Thursday
Low  tide  1.7 feet at  1:48 AM Friday
High tide  2.1 feet at  6:29 AM Friday
Low  tide -0.4 feet at  2:21 PM Friday
High tide  2.1 feet at 10:09 PM Friday

* 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.

$$

Simpson