822
FZPQ50 PGUM 071818
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
418 AM CHST SAT AUG 8 2026
DISCUSSION
HAZARDOUS SURF AND A HIGH RISK OF RIP CURRENTS ARE
EXPECTED TO CONTINUE ALONG WEST AND NORTH FACING REEFS THROUGH
MONDAY. A MODERATE RISK OF LIGHTNING IS EXPECTED THROUGH THE
WEEKEND.
GUZ001-MPZ001>003-080900-
GUAM-ROTA-TINIAN-SAIPAN-
418 AM CHST SAT AUG 8 2026
...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST MONDAY ALONG WEST
AND NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH MONDAY AFTERNOON ALONG WEST AND
NORTH FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SATURDAY
THROUGH 600 PM SUNDAY
TODAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 12 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............10 TO 12 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 8 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............EAST TO NORTHEAST AT 3 TO 4 FEET.
TERTIARY PERIOD..............10 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........85 DEGREES.
MAX HEAT INDEX.........AROUND 101.
WINDS...............BREEZY. SOUTHWEST AT 15 TO 25 MPH.
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............9 TO 11 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............NORTHEAST AT 3 TO 4 FEET.
TERTIARY PERIOD..............10 SECONDS.
WINDS...............WEST AT 15 TO 20 MPH.
SUNDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............8 TO 10 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 3 TO 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............NORTHEAST AT AROUND 3 FEET.
TERTIARY PERIOD..............10 SECONDS.
MAX HEAT INDEX.........AROUND 100.
WINDS...............BREEZY. SOUTHWEST AT 15 TO 25 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.0 FEET AT 9:26 AM SATURDAY
HIGH TIDE 2.3 FEET AT 5:20 PM SATURDAY
LOW TIDE 1.9 FEET AT 9:31 PM SATURDAY
HIGH TIDE 2.5 FEET AT 2:35 AM SUNDAY
LOW TIDE -0.2 FEET AT 10:31 AM SUNDAY
HIGH TIDE 2.4 FEET AT 6:22 PM SUNDAY
AT ROTA ISLAND...
LOW TIDE 0.0 FEET AT 9:20 AM SATURDAY
HIGH TIDE 2.1 FEET AT 5:17 PM SATURDAY
LOW TIDE 1.8 FEET AT 9:25 PM SATURDAY
HIGH TIDE 2.4 FEET AT 2:32 AM SUNDAY
LOW TIDE -0.2 FEET AT 10:25 AM SUNDAY
HIGH TIDE 2.3 FEET AT 6:19 PM SUNDAY
AT TINIAN ISLAND...
LOW TIDE 0.0 FEET AT 9:03 AM SATURDAY
HIGH TIDE 1.7 FEET AT 5:18 PM SATURDAY
LOW TIDE 0.6 FEET AT 9:08 PM SATURDAY
HIGH TIDE 1.9 FEET AT 2:33 AM SUNDAY
LOW TIDE -0.1 FEET AT 10:08 AM SUNDAY
HIGH TIDE 1.8 FEET AT 6:20 PM SUNDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE -0.2 FEET AT 9:38 AM SATURDAY
HIGH TIDE 1.9 FEET AT 5:47 PM SATURDAY
LOW TIDE 1.7 FEET AT 9:19 PM SATURDAY
HIGH TIDE 2.3 FEET AT 2:14 AM SUNDAY
LOW TIDE -0.4 FEET AT 10:37 AM SUNDAY
HIGH TIDE 2.1 FEET AT 6:44 PM SUNDAY
* 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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