271
FZPQ50 PGUM 211835
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
435 AM CHST WED JUL 22 2026
DISCUSSION
THERE WILL BE A MODERATE RISK OF RIP CURRENTS ALONG
EAST, SOUTH AND WEST FACING REEFS AND A MODERATE RISK OF LIGHTNING
THROUGH AT LEAST FRIDAY.
GUZ001-MPZ001>003-220945-
GUAM-ROTA-TINIAN-SAIPAN-
435 AM CHST WED JUL 22 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM WEDNESDAY
THROUGH 600 PM THURSDAY
TODAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........84 DEGREES.
MAX HEAT INDEX.........AROUND 102.
WINDS...............SOUTH AT AROUND 10 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............LIGHT AND VARIABLE.
THURSDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 100.
WINDS...............LIGHT AND VARIABLE.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.7 FEET AT 8:25 AM WEDNESDAY
HIGH TIDE 1.9 FEET AT 3:16 PM WEDNESDAY
LOW TIDE 1.6 FEET AT 7:42 PM WEDNESDAY
HIGH TIDE 2.4 FEET AT 1:38 AM THURSDAY
LOW TIDE 0.5 FEET AT 9:19 AM THURSDAY
HIGH TIDE 2.0 FEET AT 4:53 PM THURSDAY
LOW TIDE 1.8 FEET AT 8:52 PM THURSDAY
AT ROTA ISLAND...
LOW TIDE 0.6 FEET AT 8:19 AM WEDNESDAY
HIGH TIDE 1.8 FEET AT 3:13 PM WEDNESDAY
LOW TIDE 1.5 FEET AT 7:36 PM WEDNESDAY
HIGH TIDE 2.3 FEET AT 1:35 AM THURSDAY
LOW TIDE 0.5 FEET AT 9:13 AM THURSDAY
HIGH TIDE 1.9 FEET AT 4:50 PM THURSDAY
LOW TIDE 1.7 FEET AT 8:46 PM THURSDAY
AT TINIAN ISLAND...
LOW TIDE 0.2 FEET AT 8:02 AM WEDNESDAY
HIGH TIDE 1.4 FEET AT 3:14 PM WEDNESDAY
LOW TIDE 0.5 FEET AT 7:19 PM WEDNESDAY
HIGH TIDE 1.8 FEET AT 1:36 AM THURSDAY
LOW TIDE 0.2 FEET AT 8:56 AM THURSDAY
HIGH TIDE 1.5 FEET AT 4:51 PM THURSDAY
LOW TIDE 0.6 FEET AT 8:29 PM THURSDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.4 FEET AT 8:45 AM WEDNESDAY
HIGH TIDE 1.5 FEET AT 3:43 PM WEDNESDAY
LOW TIDE 1.3 FEET AT 7:29 PM WEDNESDAY
HIGH TIDE 2.1 FEET AT 1:39 AM THURSDAY
LOW TIDE 0.2 FEET AT 9:38 AM THURSDAY
HIGH TIDE 1.6 FEET AT 5:38 PM THURSDAY
LOW TIDE 1.6 FEET AT 8:17 PM THURSDAY
* 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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