200
FZPQ50 PGUM 051849
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
449 AM CHST THU AUG 6 2026
DISCUSSION
HAZARDOUS SURF IS EXPECTED TO CONTINUE ALONG WEST AND
NORTH FACING REEFS OF THE MARIANAS, IN ADDITION TO THE HIGH RIP CURRENT
RISK ALONG WEST, NORTH, AND EAST FACING REEFS. A MODERATE RISK OF
LIGHTNING IS EXPECTED FOR THE REST OF THE WEEK.
GUZ001-MPZ001>003-060800-
GUAM-ROTA-TINIAN-SAIPAN-
449 AM CHST THU AUG 6 2026
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM CHST SATURDAY
ALONG WEST AND NORTH FACING REEFS...
...HIGH RIP CURRENT RISK REMAINS THROUGH SATURDAY AFTERNOON ALONG
WEST, NORTH, AND EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM THURSDAY
THROUGH 600 PM FRIDAY
TODAY
RIP CURRENT RISK.....HIGH. POUNDING SURF WILL PRODUCE LIFE
THREATENING RIP CURRENTS AT REEFS AND BEACHES.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............10 TO 12 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 6 TO 8 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTHWEST AT 4 TO 6 FEET.
SECONDARY PERIOD.............14 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........86 DEGREES.
MAX HEAT INDEX.........AROUND 102.
WINDS...............WEST AT 10 TO 20 MPH.
TONIGHT
RIP CURRENT RISK.....HIGH. POUNDING SURF WILL PRODUCE LIFE
THREATENING RIP CURRENTS AT REEFS AND BEACHES.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............10 TO 12 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 6 TO 8 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTHWEST AT 4 TO 6 FEET.
SECONDARY PERIOD.............14 SECONDS.
WINDS...............WEST AT 10 TO 20 MPH.
FRIDAY
RIP CURRENT RISK.....HIGH. HUGE WAVES WILL PRODUCE DEADLY RIP
CURRENTS. STAY OUT OF THE WATER.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............10 TO 12 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 6 TO 8 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTHWEST AT 4 TO 6 FEET.
SECONDARY PERIOD.............14 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............WEST AT 10 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.5 FEET AT 7:17 AM THURSDAY
HIGH TIDE 2.0 FEET AT 2:01 PM THURSDAY
LOW TIDE 1.6 FEET AT 6:53 PM THURSDAY
HIGH TIDE 2.5 FEET AT 12:42 AM FRIDAY
LOW TIDE 0.2 FEET AT 8:20 AM FRIDAY
HIGH TIDE 2.1 FEET AT 3:50 PM FRIDAY
LOW TIDE 1.8 FEET AT 8:05 PM FRIDAY
AT ROTA ISLAND...
LOW TIDE 0.4 FEET AT 7:11 AM THURSDAY
HIGH TIDE 1.9 FEET AT 1:58 PM THURSDAY
LOW TIDE 1.5 FEET AT 6:47 PM THURSDAY
HIGH TIDE 2.4 FEET AT 12:39 AM FRIDAY
LOW TIDE 0.2 FEET AT 8:14 AM FRIDAY
HIGH TIDE 2.0 FEET AT 3:47 PM FRIDAY
LOW TIDE 1.7 FEET AT 7:59 PM FRIDAY
AT TINIAN ISLAND...
LOW TIDE 0.2 FEET AT 6:54 AM THURSDAY
HIGH TIDE 1.5 FEET AT 1:59 PM THURSDAY
LOW TIDE 0.5 FEET AT 6:30 PM THURSDAY
HIGH TIDE 1.9 FEET AT 12:40 AM FRIDAY
LOW TIDE 0.1 FEET AT 7:57 AM FRIDAY
HIGH TIDE 1.6 FEET AT 3:48 PM FRIDAY
LOW TIDE 0.6 FEET AT 7:42 PM FRIDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.3 FEET AT 7:35 AM THURSDAY
HIGH TIDE 1.6 FEET AT 2:18 PM THURSDAY
LOW TIDE 1.3 FEET AT 6:49 PM THURSDAY
HIGH TIDE 2.2 FEET AT 12:45 AM FRIDAY
LOW TIDE 0.0 FEET AT 8:35 AM FRIDAY
HIGH TIDE 1.7 FEET AT 4:23 PM FRIDAY
LOW TIDE 1.5 FEET AT 7:53 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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