799
FZPQ50 PGUM 100711
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
511 PM CHST MON AUG 10 2026
DISCUSSION
HAZARDOUS SURF AND A HIGH RISK OF RIP CURRENTS ARE
EXPECTED TO CONTINUE ALONG WEST AND NORTH FACING REEFS THROUGH
THURSDAY AFTERNOON, AS NORTHWESTERLY AND NORTHEASTERLY SWELLS CONTINUE
TO MIX IN THE REGION. A MODERATE RISK OF LIGHTNING IS EXPECTED THROUGH
TUESDAY NIGHT.
GUZ001-MPZ001>003-102000-
GUAM-ROTA-TINIAN-SAIPAN-
511 PM CHST MON AUG 10 2026
..HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM CHST THURSDAY
...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THURSDAY
AFTERNOON...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM MONDAY
THROUGH 600 AM WEDNESDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............9 TO 11 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 6 TO 8 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............11 SECONDS.
TERTIARY SWELL...............NORTHEAST AT AROUND 2 FEET.
TERTIARY PERIOD..............12 SECONDS.
WINDS...............BREEZY. WEST AT 15 TO 25 MPH.
TUESDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............9 TO 11 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 6 TO 8 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............11 SECONDS.
TERTIARY SWELL...............NORTHEAST AT AROUND 2 FEET.
TERTIARY PERIOD..............12 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............BREEZY. WEST AT 15 TO 25 MPH.
TUESDAY NIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............6 TO 9 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............6 TO 9 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 5 TO 7 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............BREEZY. SOUTHWEST AT 15 TO 25 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.5 FEET AT 7:10 PM MONDAY
LOW TIDE 1.8 FEET AT 11:59 PM MONDAY
HIGH TIDE 2.7 FEET AT 4:57 AM TUESDAY
LOW TIDE -0.4 FEET AT 12:30 PM TUESDAY
HIGH TIDE 2.6 FEET AT 7:50 PM TUESDAY
LOW TIDE 1.7 FEET AT 12:55 AM WEDNESDAY
HIGH TIDE 2.7 FEET AT 6:01 AM WEDNESDAY
AT ROTA ISLAND...
HIGH TIDE 2.4 FEET AT 7:07 PM MONDAY
LOW TIDE 1.7 FEET AT 11:53 PM MONDAY
HIGH TIDE 2.5 FEET AT 4:54 AM TUESDAY
LOW TIDE -0.4 FEET AT 12:24 PM TUESDAY
HIGH TIDE 2.4 FEET AT 7:47 PM TUESDAY
LOW TIDE 1.6 FEET AT 12:49 AM WEDNESDAY
HIGH TIDE 2.6 FEET AT 5:58 AM WEDNESDAY
AT TINIAN ISLAND...
HIGH TIDE 1.9 FEET AT 7:08 PM MONDAY
LOW TIDE 0.6 FEET AT 11:36 PM MONDAY
HIGH TIDE 2.0 FEET AT 4:55 AM TUESDAY
LOW TIDE -0.1 FEET AT 12:07 PM TUESDAY
HIGH TIDE 1.9 FEET AT 7:48 PM TUESDAY
LOW TIDE 0.6 FEET AT 12:32 AM WEDNESDAY
HIGH TIDE 2.0 FEET AT 5:59 AM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.2 FEET AT 7:29 PM MONDAY
LOW TIDE 1.7 FEET AT 11:43 PM MONDAY
HIGH TIDE 2.3 FEET AT 4:46 AM TUESDAY
LOW TIDE -0.6 FEET AT 12:31 PM TUESDAY
HIGH TIDE 2.2 FEET AT 8:08 PM TUESDAY
LOW TIDE 1.6 FEET AT 12:50 AM WEDNESDAY
HIGH TIDE 2.3 FEET AT 5:55 AM WEDNESDAY
* 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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