677
FZPQ50 PGUM 141830
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
430 AM CHST THU OCT 15 2026
DISCUSSION
THERE WILL BE A LOW RISK OF RIP CURRENTS ALONG ALL REEFS
TODAY, WHICH WILL BECOME MODERATE ALONG EAST FACING REEFS TONIGHT, AND
THEN MODERATE ALONG NORTH AND SOUTH FACING REEFS ALSO ON FRIDAY.
THERE WILL BE A MODERATE RISK OF LIGHTNING SATURDAY NIGHT THROUGH
MONDAY NIGHT, WITH THE POSSIBLE EXCEPTION OF SUNDAY, WHEN THE RISK
MIGHT BECOME HIGH. THESE CHANGES WILL BE DRIVEN BY THE APPROACH OF
TROPICAL DEPRESSION 29W.
GUZ001-MPZ001>003-150930-
GUAM-ROTA-TINIAN-SAIPAN-
430 AM CHST THU OCT 15 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM THURSDAY
THROUGH 600 PM FRIDAY
TODAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............1 TO 3 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 1 TO 2 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
PAGO BUOY..........85 DEGREES.
MAX HEAT INDEX.........AROUND 99.
WINDS...............LIGHT AND VARIABLE BECOMING
NORTHEAST 10 MPH IN THE AFTERNOON.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 2 TO 4 FEET.
PRIMARY PERIOD...............9 SECONDS.
WINDS...............NORTHEAST AT AROUND 10 MPH.
FRIDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 3 TO 5 FEET.
PRIMARY PERIOD...............9 SECONDS.
MAX HEAT INDEX.........AROUND 98.
WINDS...............NORTHEAST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.1 FEET AT 11:24 AM THURSDAY
LOW TIDE 1.5 FEET AT 4:42 PM THURSDAY
HIGH TIDE 2.0 FEET AT 9:08 PM THURSDAY
LOW TIDE -0.1 FEET AT 4:43 AM FRIDAY
HIGH TIDE 2.0 FEET AT 12:29 PM FRIDAY
LOW TIDE 1.6 FEET AT 5:35 PM FRIDAY
HIGH TIDE 1.9 FEET AT 9:39 PM FRIDAY
AT ROTA ISLAND...
HIGH TIDE 1.9 FEET AT 11:21 AM THURSDAY
LOW TIDE 1.4 FEET AT 4:36 PM THURSDAY
HIGH TIDE 1.8 FEET AT 9:05 PM THURSDAY
LOW TIDE -0.1 FEET AT 4:37 AM FRIDAY
HIGH TIDE 1.9 FEET AT 12:26 PM FRIDAY
LOW TIDE 1.5 FEET AT 5:29 PM FRIDAY
HIGH TIDE 1.7 FEET AT 9:36 PM FRIDAY
AT TINIAN ISLAND...
HIGH TIDE 1.5 FEET AT 11:22 AM THURSDAY
LOW TIDE 0.5 FEET AT 4:19 PM THURSDAY
HIGH TIDE 1.4 FEET AT 9:06 PM THURSDAY
LOW TIDE 0.0 FEET AT 4:20 AM FRIDAY
HIGH TIDE 1.5 FEET AT 12:27 PM FRIDAY
LOW TIDE 0.5 FEET AT 5:12 PM FRIDAY
HIGH TIDE 1.4 FEET AT 9:37 PM FRIDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.0 FEET AT 12:02 PM THURSDAY
LOW TIDE 1.6 FEET AT 4:43 PM THURSDAY
HIGH TIDE 1.9 FEET AT 9:00 PM THURSDAY
LOW TIDE 0.1 FEET AT 4:54 AM FRIDAY
HIGH TIDE 1.9 FEET AT 1:00 PM FRIDAY
LOW TIDE 1.7 FEET AT 5:44 PM FRIDAY
HIGH TIDE 1.8 FEET AT 9:16 PM FRIDAY
* 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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