362
FZPQ50 PGUM 040540
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
340 PM ChST Fri Jul 4 2025

.DISCUSSION...A moderate risk of rip currents will continue
along east facing reefs, with a low risk along all other reefs.
Surf and rip risk could rise by around midweek along north and
especially west facing reefs as a west to northwest swell
emanating from a strengthening tropical cyclone north of the
Philippines arrives. A moderate risk of lightning is expected
beginning tomorrow and continuing through the weekend into next
week.

$$

GUZ001-MPZ001>003-042045-
Guam-Rota-Tinian-Saipan-
340 PM ChST Fri Jul 4 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............2 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............9 seconds.
Water Temperature
      Ritidian buoy................87 Degrees.
Winds..............................Southeast at 5 to 10 mph.

.SATURDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............2 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............9 seconds.
Max Heat Index.....................Around 101.
Winds..............................Southeast at 5 to 10 mph.

.SATURDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 3 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............9 seconds.
Winds..............................Light and variable.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.5 feet at  8:18 PM Friday
High tide  2.4 feet at  2:30 AM Saturday
Low  tide  0.6 feet at 10:00 AM Saturday
High tide  2.0 feet at  5:15 PM Saturday
Low  tide  1.7 feet at  9:21 PM Saturday
High tide  2.4 feet at  3:03 AM Sunday

At Rota Island...
Low  tide  1.4 feet at  8:12 PM Friday
High tide  2.3 feet at  2:27 AM Saturday
Low  tide  0.6 feet at  9:54 AM Saturday
High tide  1.9 feet at  5:12 PM Saturday
Low  tide  1.6 feet at  9:15 PM Saturday
High tide  2.2 feet at  3:00 AM Sunday

At Tinian Island...
Low  tide  1.0 feet at  7:24 PM Friday
High tide  1.7 feet at  1:48 AM Saturday
Low  tide  0.2 feet at  9:49 AM Saturday
High tide  1.3 feet at  5:26 PM Saturday
Low  tide  1.2 feet at  8:16 PM Saturday
High tide  1.7 feet at  2:12 AM Sunday

At Tanapag Harbor, Saipan...
Low  tide  1.2 feet at  7:55 PM Friday
High tide  2.1 feet at  2:27 AM Saturday
Low  tide  0.3 feet at 10:17 AM Saturday
High tide  1.5 feet at  5:51 PM Saturday
Low  tide  1.4 feet at  8:40 PM Saturday
High tide  2.1 feet at  2:50 AM Sunday

* 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.

$$