013
FZPQ50 PGUM 160241
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
1241 PM ChST Mon Jun 16 2025

Updated discussion for afternoon lightning risk

.DISCUSSION...There is a low risk of rip currents along all reefs.
Surf along east facing reefs may gradually begin to rise to 3 to
5 feet around the middle of the week. There will be a moderate of
lightning along western shores and beaches of Guam today.

$$

GUZ001-MPZ001>003-160845-
Guam-Rota-Tinian-Saipan-
1241 PM ChST Mon Jun 16 2025

36 hour Surf Zone Forecast for the Marianas from 1237 PM Monday
through 600 AM Wednesday

.REST OF TODAY...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Max Heat Index.........Around 101.
Winds...............East at 10 to 15 mph.

.TONIGHT...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
Winds...............East at around 10 mph.

.TUESDAY...
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 2 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 102.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.0 feet at  5:10 PM Monday
High tide  2.6 feet at 12:38 AM Tuesday
Low  tide  1.8 feet at  6:22 AM Tuesday
High tide  2.2 feet at 10:41 AM Tuesday
Low  tide  0.2 feet at  5:55 PM Tuesday
High tide  2.6 feet at  1:12 AM Wednesday
Low  tide  1.5 feet at  7:20 AM Wednesday

At Rota Island...
Low  tide  0.0 feet at  5:04 PM Monday
High tide  2.4 feet at 12:35 AM Tuesday
Low  tide  1.7 feet at  6:16 AM Tuesday
High tide  2.1 feet at 10:38 AM Tuesday
Low  tide  0.2 feet at  5:49 PM Tuesday
High tide  2.5 feet at  1:09 AM Wednesday
Low  tide  1.5 feet at  7:14 AM Wednesday

At Tinian Island...
Low  tide -0.1 feet at  4:47 PM Monday
High tide  1.7 feet at 12:41 AM Tuesday
Low  tide  1.3 feet at  6:04 AM Tuesday
High tide  1.5 feet at  9:42 AM Tuesday
Low  tide  0.0 feet at  5:28 PM Tuesday
High tide  1.7 feet at  1:01 AM Wednesday
Low  tide  1.1 feet at  7:08 AM Wednesday

At Tanapag Harbor, Saipan...
Low  tide -0.2 feet at  5:16 PM Monday
High tide  2.3 feet at  1:03 AM Tuesday
Low  tide  1.5 feet at  7:00 AM Tuesday
High tide  1.7 feet at 10:35 AM Tuesday
Low  tide -0.1 feet at  6:02 PM Tuesday
High tide  2.3 feet at  1:28 AM Wednesday
Low  tide  1.2 feet at  7:50 AM 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.

$$