569
FZPQ50 PGUM 121721
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
321 AM ChST Tue Aug 13 2024

.SYNOPSIS...A moderate risk of rip currents continues along west
and north facing reefs through tonight, becoming low on Wednesday.
A low rip risk continues for east and south facing reefs through
Wednesday. A moderate risk of lightning is possible beginning late
tonight.

$$

GUZ001-MPZ001>003-130830-
Guam-Rota-Tinian-Saipan-
321 AM ChST Tue Aug 13 2024

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

.TODAY AND TONIGHT (6 AM TO 6 AM WEDNESDAY)...
Rip current risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............1 to 3 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............3 to 5 feet.
Swell/Period
      Primary swell................Northwest at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............East at around 2 feet.
      Secondary period.............8 seconds.
Water temperature
      Ritidian buoy................87 Degrees.
Maximum afternoon heat index.......Around 104.
Coastal Winds....................Southeast to east 5 to 10 mph.

.WEDNESDAY (6 AM TO 6 PM)...
Rip current risk.....Low *.
Surf Height
      North facing reefs............2 to 4 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................Northwest at around 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............East at around 3 feet.
      Secondary period.............8 seconds.
Maximum afternoon heat index.......Around 104.
Coastal Winds....................East to southeast around 10 mph.

.OUTLOOK...Surf and rip risk looks to build along east facing
reefs late week as the easterly swell increases. A slight to
moderate risk of lightning expected Wednesday into the weekend.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.5 feet at  7:49 AM Tuesday
High tide  1.9 feet at  3:12 PM Tuesday
Low  tide  1.7 feet at  7:31 PM Tuesday
High tide  2.2 feet at 12:58 AM Wednesday
Low  tide  0.4 feet at  8:48 AM Wednesday
High tide  2.0 feet at  4:49 PM Wednesday

At Rota Island...
Low  tide  0.5 feet at  7:43 AM Tuesday
High tide  1.8 feet at  3:09 PM Tuesday
Low  tide  1.6 feet at  7:25 PM Tuesday
High tide  2.1 feet at 12:55 AM Wednesday
Low  tide  0.4 feet at  8:42 AM Wednesday
High tide  1.9 feet at  4:46 PM Wednesday

At Tinian Island...
Low  tide  0.2 feet at  7:50 AM Tuesday
High tide  1.2 feet at  3:52 PM Tuesday
Low  tide  1.2 feet at  6:18 PM Tuesday
High tide  1.6 feet at 12:12 AM Wednesday
Low  tide  0.0 feet at  8:44 AM Wednesday
High tide  1.3 feet at  5:24 PM Wednesday

At Tanapag Harbor, Saipan...
Low  tide  0.4 feet at  8:10 AM Tuesday
High tide  1.5 feet at  3:30 PM Tuesday
Low  tide  1.4 feet at  6:58 PM Tuesday
High tide  2.0 feet at 12:57 AM Wednesday
Low  tide  0.2 feet at  9:07 AM Wednesday
High tide  1.7 feet at  5:24 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.

$$