259
FZPQ50 PGUM 070731
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
531 PM CHST TUE OCT 7 2025
DISCUSSION
THE PASSING TROPICAL DISTURBANCE (INVEST 95W) IS
MOVING FURTHER AWAY. THERE IS A MODERATE RISK OF RIP CURRENTS
ALONG NORTH AND EAST FACING REEFS WHILE SOUTH AND WEST FACING
REEFS REMAIN LOW. THERE ALSO REMAIN A MODERATE RISK OF LIGHTNING
TONIGHT. THE SURF IS EXPECTED TO CONTINUE TO DIMINISH THROUGH THE
WORKWEEK. FOR THE WEEKEND A NORTH SWELL MAY MOVE IN CAUSING THE
SURF TO RISE.
GUZ001-MPZ001>003-072300-
GUAM-ROTA-TINIAN-SAIPAN-
531 PM CHST TUE OCT 7 2025
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM TUESDAY
THROUGH 600 AM THURSDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
WATER TEMPERATURE
RITIDIAN BUOY..........86 DEGREES.
WINDS...............SOUTH AT 15 TO 25 MPH.
WEDNESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHEAST AT 4 TO 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............SOUTH AT 10 TO 15 MPH.
WEDNESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 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................SOUTHEAST AT 3 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
WINDS...............LIGHT AND VARIABLE BECOMING NORTHEAST
AROUND 10 MPH AFTER MIDNIGHT.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.5 FEET AT 7:24 PM TUESDAY
LOW TIDE 0.0 FEET AT 1:55 AM WEDNESDAY
HIGH TIDE 2.6 FEET AT 8:18 AM WEDNESDAY
LOW TIDE 0.8 FEET AT 2:13 PM WEDNESDAY
HIGH TIDE 2.6 FEET AT 7:51 PM WEDNESDAY
LOW TIDE -0.3 FEET AT 2:38 AM THURSDAY
HIGH TIDE 2.5 FEET AT 9:16 AM THURSDAY
AT ROTA ISLAND...
HIGH TIDE 2.4 FEET AT 7:21 PM TUESDAY
LOW TIDE 0.0 FEET AT 1:49 AM WEDNESDAY
HIGH TIDE 2.4 FEET AT 8:15 AM WEDNESDAY
LOW TIDE 0.8 FEET AT 2:07 PM WEDNESDAY
HIGH TIDE 2.4 FEET AT 7:48 PM WEDNESDAY
LOW TIDE -0.2 FEET AT 2:32 AM THURSDAY
HIGH TIDE 2.4 FEET AT 9:13 AM THURSDAY
AT TINIAN ISLAND...
HIGH TIDE 1.7 FEET AT 6:42 PM TUESDAY
LOW TIDE 0.0 FEET AT 1:28 AM WEDNESDAY
HIGH TIDE 1.5 FEET AT 7:54 AM WEDNESDAY
LOW TIDE 0.7 FEET AT 1:30 PM WEDNESDAY
HIGH TIDE 1.7 FEET AT 7:07 PM WEDNESDAY
LOW TIDE -0.2 FEET AT 2:16 AM THURSDAY
HIGH TIDE 1.6 FEET AT 9:04 AM THURSDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.2 FEET AT 7:33 PM TUESDAY
LOW TIDE 0.1 FEET AT 2:00 AM WEDNESDAY
HIGH TIDE 2.3 FEET AT 8:35 AM WEDNESDAY
LOW TIDE 0.8 FEET AT 2:23 PM WEDNESDAY
HIGH TIDE 2.2 FEET AT 7:58 PM WEDNESDAY
LOW TIDE -0.2 FEET AT 2:44 AM THURSDAY
HIGH TIDE 2.3 FEET AT 9:37 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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