991
FZPQ50 PGUM 291855
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
455 AM CHST THU JUL 30 2026
DISCUSSION
THERE WILL BE A LOW RISK OF RIP CURRENTS TODAY WHICH
WILL GRADUALLY BECOME MODERATE ALONG EAST FACING REEFS. THE RISK OF
RIP CURRENTS WILL LIKELY BECOME HIGH ALONG EITHER OR BOTH OF EAST OR
WEST FACING REEFS NEXT WEEK.
GUZ001-MPZ001>003-301000-
GUAM-ROTA-TINIAN-SAIPAN-
455 AM CHST THU JUL 30 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM THURSDAY
THROUGH 600 PM FRIDAY
TODAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT AROUND 2 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............SOUTH AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........86 DEGREES.
MAX HEAT INDEX.........AROUND 103.
WINDS...............SOUTHEAST AT 5 TO 10 MPH.
TONIGHT
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 4 FEET.
EAST FACING REEFS............3 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 2 TO 3 FEET.
PRIMARY PERIOD...............7 SECONDS.
SECONDARY SWELL..............SOUTH AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
WINDS...............SOUTHWEST AT 5 TO 10 MPH.
FRIDAY
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 4 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 3 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............SOUTH AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
MAX HEAT INDEX.........AROUND 104.
WINDS...............SOUTH TO SOUTHWEST AT 5 TO 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.5 FEET AT 7:05 AM THURSDAY
LOW TIDE 0.0 FEET AT 2:20 PM THURSDAY
HIGH TIDE 2.4 FEET AT 9:23 PM THURSDAY
LOW TIDE 1.6 FEET AT 2:47 AM FRIDAY
HIGH TIDE 2.5 FEET AT 7:45 AM FRIDAY
LOW TIDE 0.1 FEET AT 2:53 PM FRIDAY
HIGH TIDE 2.5 FEET AT 9:47 PM FRIDAY
AT ROTA ISLAND...
HIGH TIDE 2.3 FEET AT 7:02 AM THURSDAY
LOW TIDE 0.0 FEET AT 2:14 PM THURSDAY
HIGH TIDE 2.3 FEET AT 9:20 PM THURSDAY
LOW TIDE 1.5 FEET AT 2:41 AM FRIDAY
HIGH TIDE 2.3 FEET AT 7:42 AM FRIDAY
LOW TIDE 0.0 FEET AT 2:47 PM FRIDAY
HIGH TIDE 2.3 FEET AT 9:44 PM FRIDAY
AT TINIAN ISLAND...
HIGH TIDE 1.8 FEET AT 7:03 AM THURSDAY
LOW TIDE 0.0 FEET AT 1:57 PM THURSDAY
HIGH TIDE 1.8 FEET AT 9:21 PM THURSDAY
LOW TIDE 0.5 FEET AT 2:24 AM FRIDAY
HIGH TIDE 1.8 FEET AT 7:43 AM FRIDAY
LOW TIDE 0.0 FEET AT 2:30 PM FRIDAY
HIGH TIDE 1.8 FEET AT 9:45 PM FRIDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.0 FEET AT 6:55 AM THURSDAY
LOW TIDE -0.2 FEET AT 2:30 PM THURSDAY
HIGH TIDE 2.1 FEET AT 9:53 PM THURSDAY
LOW TIDE 1.5 FEET AT 2:59 AM FRIDAY
HIGH TIDE 2.0 FEET AT 7:42 AM FRIDAY
LOW TIDE -0.2 FEET AT 3:03 PM FRIDAY
HIGH TIDE 2.1 FEET AT 10:18 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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