768
FZPQ50 PGUM 300643
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
443 PM CHST TUE DEC 30 2025
DISCUSSION
THERE IS A HIGH RISK OF RIP CURRENTS ALONG
NORTH FACING REEFS AND A MODERATE ALONG EAST AND WEST FACING REEFS.
PULSES OF THE NORTH SWELL ARE CONTINUING THROUGH THE REGION. THESE
PULSES HAVE MAINTAINED SURF OF 8 TO 10 FEET. MODEL TRENDS SUGGEST A
DOWNWARD TREND IN THE SWELLS AND SURF, HOWEVER, BUOY DATA AND LOCAL
OBSERVERS SUGGEST THAT TREND HAS NOT YET STARTED. ONCE THESE PULSES
PASS, THE SURF IS EXPECTED TO GRADUALLY DIMINISH.
GUZ001-MPZ001>003-302200-
GUAM-ROTA-TINIAN-SAIPAN-
443 PM CHST TUE DEC 30 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT ALONG NORTH FACING REEFS
UNTIL 4 PM CHST WEDNESDAY...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT ALONG NORTH FACING REEFS
UNTIL 4 PM CHST WEDNESDAY..
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM TUESDAY
THROUGH 600 AM THURSDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............6 TO 8 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTH AT 7 TO 8 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTH AT 3 TO 4 FEET.
SECONDARY PERIOD.............8 SECONDS.
WATER TEMPERATURE
RITIDIAN BUOY..........84 DEGREES.
WINDS...............EAST AT 10 TO 20 MPH.
WEDNESDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............7 TO 9 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTH AT 6 TO 8 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTH AT 2 TO 4 FEET.
SECONDARY PERIOD.............8 SECONDS.
MAX HEAT INDEX.........AROUND 97.
WINDS...............EAST AT 10 TO 20 MPH.
WEDNESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............6 TO 8 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT 2 TO 4 FEET.
SECONDARY PERIOD.............11 SECONDS.
WINDS...............EAST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE -0.4 FEET AT 10:34 PM TUESDAY
HIGH TIDE 1.8 FEET AT 5:52 AM WEDNESDAY
LOW TIDE 1.3 FEET AT 10:18 AM WEDNESDAY
HIGH TIDE 2.3 FEET AT 3:48 PM WEDNESDAY
LOW TIDE -0.7 FEET AT 11:26 PM WEDNESDAY
HIGH TIDE 2.1 FEET AT 6:56 AM THURSDAY
AT ROTA ISLAND...
LOW TIDE -0.4 FEET AT 10:28 PM TUESDAY
HIGH TIDE 1.7 FEET AT 5:49 AM WEDNESDAY
LOW TIDE 1.3 FEET AT 10:12 AM WEDNESDAY
HIGH TIDE 2.2 FEET AT 3:45 PM WEDNESDAY
LOW TIDE -0.7 FEET AT 11:20 PM WEDNESDAY
HIGH TIDE 1.9 FEET AT 6:53 AM THURSDAY
AT TINIAN ISLAND...
LOW TIDE -0.1 FEET AT 10:11 PM TUESDAY
HIGH TIDE 1.4 FEET AT 5:50 AM WEDNESDAY
LOW TIDE 0.4 FEET AT 9:55 AM WEDNESDAY
HIGH TIDE 1.7 FEET AT 3:46 PM WEDNESDAY
LOW TIDE -0.2 FEET AT 11:03 PM WEDNESDAY
HIGH TIDE 1.5 FEET AT 6:54 AM THURSDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE -0.2 FEET AT 10:41 PM TUESDAY
HIGH TIDE 1.9 FEET AT 6:12 AM WEDNESDAY
LOW TIDE 1.5 FEET AT 10:23 AM WEDNESDAY
HIGH TIDE 2.3 FEET AT 3:43 PM WEDNESDAY
LOW TIDE -0.5 FEET AT 11:28 PM WEDNESDAY
HIGH TIDE 2.2 FEET AT 7:14 AM 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.
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