835
FZPQ50 PGUM 070712
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
512 PM CHST FRI AUG 7 2026
DISCUSSION
HAZARDOUS SURF IS EXPECTED TO CONTINUE ALONG WEST AND
NORTH FACING REEFS OF THE MARIANAS THROUGH MONDAY, IN ADDITION TO
THE HIGH RIP CURRENT RISK ALONG WEST, NORTH, AND EAST FACING REEFS.
RIP CURRENT RISK MAY DROP TO MODERATE ALONG EAST REEFS OVER THE
WEEKEND AS NORTHWESTERLY AND EASTERLY SWELLS DECREASE. A MODERATE RISK
OF LIGHTNING IS EXPECTED THROUGH THE WEEKEND.
GUZ001-MPZ001>003-072200-
GUAM-ROTA-TINIAN-SAIPAN-
512 PM CHST FRI AUG 7 2026
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM CHST MONDAY ALONG
WEST AND NORTH FACING REEFS...
...HIGH RIP CURRENT RISK REMAINS THROUGH MONDAY AFTERNOON ALONG
WEST, NORTH, AND EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM FRIDAY
THROUGH 600 AM SUNDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............10 TO 12 FEET.
EAST FACING REEFS............6 TO 9 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............10 TO 13 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............EAST TO NORTHEAST AT 3 TO 4 FEET.
TERTIARY PERIOD..............10 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........86 DEGREES.
MAX HEAT INDEX.........AROUND 101.
WINDS...............BREEZY. WEST AT 15 TO 25 MPH. OCCASIONAL GUSTS TO
35 MPH NEAR HEAVIER SHOWERS.
SATURDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............5 TO 8 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............10 TO 12 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............EAST TO NORTHEAST AT AROUND 3 FEET.
TERTIARY PERIOD..............10 TO 12 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............BREEZY. SOUTHWEST AT 15 TO 25 MPH.
SATURDAY NIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............5 TO 8 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............9 TO 11 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 3 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............EAST TO NORTHEAST AT AROUND 3 FEET.
TERTIARY PERIOD..............10 TO 12 SECONDS.
WINDS...............WEST AT 15 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 1.8 FEET AT 8:05 PM FRIDAY
HIGH TIDE 2.5 FEET AT 1:32 AM SATURDAY
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
AT ROTA ISLAND...
LOW TIDE 1.7 FEET AT 7:59 PM FRIDAY
HIGH TIDE 2.4 FEET AT 1:29 AM SATURDAY
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
AT TINIAN ISLAND...
HIGH TIDE 1.6 FEET AT 3:48 PM FRIDAY
LOW TIDE 0.6 FEET AT 7:42 PM FRIDAY
HIGH TIDE 1.9 FEET AT 1:30 AM SATURDAY
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
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 1.5 FEET AT 7:53 PM FRIDAY
HIGH TIDE 2.3 FEET AT 1:23 AM SATURDAY
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 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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