486
FZPQ50 PGUM 251745
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
345 AM ChST Wed Nov 26 2025

.DISCUSSION...A high risk of rip currents is expected along east
facing reefs of the Marianas through at least late tonight, while
remaining moderate along north facing reefs for much of this week.
A moderate risk of lightning is expected today, as a trade-wind
trough enhanced by upper-level features moves in.

$$

GUZ001-MPZ001>003-260800-
Guam-Rota-Tinian-Saipan-
345 AM ChST Wed Nov 26 2025

...HIGH RISK OF RIP CURRENTS THROUGH LATE TONIGHT ALONG EAST FACING
REEFS...

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

.TODAY...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............4 to 5 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Max Heat Index.........Around 100.
Winds...............East at around 15 to 20 mph.

.TONIGHT...
Rip Current Risk.....High. *
Surf Height
      North facing reefs............4 to 5 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
Winds...............East at 10 to 20 mph.

.THURSDAY...
Rip Current Risk.....Moderate. *
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............9 seconds.
Max Heat Index.........Around 102.
Winds...............East at 10 to 20 mph.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide -0.3 feet at  5:03 AM Wednesday
High tide  2.0 feet at 12:59 PM Wednesday
Low  tide  1.5 feet at  6:27 PM Wednesday
High tide  1.7 feet at 10:05 PM Wednesday
Low  tide -0.2 feet at  5:52 AM Thursday
High tide  2.1 feet at  1:44 PM Thursday

At Rota Island...
Low  tide -0.3 feet at  4:57 AM Wednesday
High tide  1.9 feet at 12:56 PM Wednesday
Low  tide  1.4 feet at  6:21 PM Wednesday
High tide  1.6 feet at 10:02 PM Wednesday
Low  tide -0.2 feet at  5:46 AM Thursday
High tide  2.0 feet at  1:41 PM Thursday

At Tinian Island...
Low  tide -0.2 feet at  4:56 AM Wednesday
High tide  1.6 feet at  1:28 PM Wednesday
Low  tide  1.3 feet at  6:14 PM Wednesday
High tide  1.4 feet at  9:05 PM Wednesday
Low  tide -0.2 feet at  5:40 AM Thursday
High tide  1.6 feet at  1:52 PM Thursday

At Tanapag Harbor, Saipan...
Low  tide -0.1 feet at  5:10 AM Wednesday
High tide  2.1 feet at  1:19 PM Wednesday
Low  tide  1.7 feet at  6:58 PM Wednesday
High tide  1.7 feet at  9:33 PM Wednesday
Low  tide  0.0 feet at  6:00 AM Thursday
High tide  2.1 feet at  1:57 PM Thursday

* 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. Rip currents
will be life threatening. If caught in a rip current, swim parallel
to the beach rather than against the current.

$$