163
FZPQ50 PGUM 290706
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
506 PM CHST SAT NOV 29 2025
DISCUSSION
THERE WILL BE A MODERATE RISK OF RIP CURRENTS ALONG
NORTH AND EAST FACING REEFS OF THE MARIANAS THROUGH TONIGHT. THEN,
THE ARRIVAL OF LONG-PERIOD NORTH-NORTHEAST SWELL WILL INCREASE SURF
ALONG NORTH AND EAST FACING REEFS OVER THE NEXT FEW DAYS. THE RIP
RISK INCREASES TO HIGH ALONG EAST FACING REEFS FIRST, THEN SURF ALONG
NORTH-FACING REEFS MAY INCREASE TO THE HIGH RIP RISK AND HIGH SURF
THRESHOLDS (9 FOOT SURF ALONG NORTH FACING REEFS) SUNDAY NIGHT AND
MONDAY. THERE WILL ALSO BE A MODERATE RISK OF LIGHTNING THROUGH
MONDAY FOR TINIAN AND SAIPAN AND THROUGH TUESDAY FOR GUAM AND ROTA.
GUZ001-MPZ001>003-292300-
GUAM-ROTA-TINIAN-SAIPAN-
506 PM CHST SAT NOV 29 2025
...HIGH RISK OF RIP CURRENTS FROM SUNDAY MORNING THROUGH
WEDNESDAY AFTERNOON ALONG EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM SATURDAY
THROUGH 600 AM MONDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............6 TO 8 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 2 FEET.
SECONDARY PERIOD.............12 SECONDS.
WATER TEMPERATURE
RITIDIAN BUOY..........85 DEGREES.
WINDS...............EAST AT 10 TO 20 MPH.
SUNDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 8 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............BREEZY. EAST AT 15 TO 25 MPH.
SUNDAY NIGHT
RIP CURRENT RISK.....HIGH. POUNDING SURF WILL PRODUCE LIFE
THREATENING RIP CURRENTS AT REEFS AND BEACHES.
SURF HEIGHT
NORTH FACING REEFS............7 TO 9 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............3 TO 4 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 5 FEET.
SECONDARY PERIOD.............14 SECONDS.
WINDS...............EAST AT 10 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.9 FEET AT 9:34 PM SATURDAY
HIGH TIDE 1.5 FEET AT 2:35 AM SUNDAY
LOW TIDE 0.4 FEET AT 8:41 AM SUNDAY
HIGH TIDE 2.3 FEET AT 3:29 PM SUNDAY
LOW TIDE 0.5 FEET AT 10:19 PM SUNDAY
HIGH TIDE 1.7 FEET AT 4:15 AM MONDAY
AT ROTA ISLAND...
LOW TIDE 0.8 FEET AT 9:28 PM SATURDAY
HIGH TIDE 1.4 FEET AT 2:32 AM SUNDAY
LOW TIDE 0.4 FEET AT 8:35 AM SUNDAY
HIGH TIDE 2.1 FEET AT 3:26 PM SUNDAY
LOW TIDE 0.4 FEET AT 10:13 PM SUNDAY
HIGH TIDE 1.6 FEET AT 4:12 AM MONDAY
AT TINIAN ISLAND...
LOW TIDE 0.7 FEET AT 9:08 PM SATURDAY
HIGH TIDE 1.1 FEET AT 1:46 AM SUNDAY
LOW TIDE 0.3 FEET AT 7:58 AM SUNDAY
HIGH TIDE 1.7 FEET AT 2:50 PM SUNDAY
LOW TIDE 0.4 FEET AT 9:50 PM SUNDAY
HIGH TIDE 1.1 FEET AT 3:31 AM MONDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 1.0 FEET AT 9:48 PM SATURDAY
HIGH TIDE 1.5 FEET AT 2:44 AM SUNDAY
LOW TIDE 0.6 FEET AT 8:50 AM SUNDAY
HIGH TIDE 2.2 FEET AT 3:37 PM SUNDAY
LOW TIDE 0.6 FEET AT 10:26 PM SUNDAY
HIGH TIDE 1.6 FEET AT 4:36 AM MONDAY
* 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.
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