397
FZPQ50 PGUM 171213 RRB
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS...DELAYED
NATIONAL WEATHER SERVICE TIYAN GU
1013 PM CHST FRI JUL 17 2026
DISCUSSION
AS WESTERLY SWELL GRADUALLY SUBSIDES, A MODERATE RISK OF RIP
CURRENTS REMAINS ALONG WEST FACING REEFS THROUGH AT LEAST SATURDAY.
AFTER WHICH, A LOW RISK OF RIP CURRENTS IS EXPECTED ALONG ALL REEFS
FOR A FEW DAYS. AROUND THE MIDDLE OF NEXT WEEK, THE RIP RISK MAY
INCREASE BACK UP TO MODERATE WITH AN INCREASE IN SWELLS ASSOCIATED
WITH THE DEVELOPING PATTERN AROUND 90W. A MODERATE RISK OF
LIGHTNING CONTINUES THROUGH SATURDAY.
GUZ001-MPZ001>003-172200-
GUAM-ROTA-TINIAN-SAIPAN-
1013 PM CHST FRI JUL 17 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM FRIDAY
THROUGH 600 AM SUNDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............3 TO 4 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 3 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........84 DEGREES.
WINDS...............WEST AT 10 TO 15 MPH.
SATURDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 3 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............SOUTHWEST AT 10 TO 15 MPH.
SATURDAY NIGHT
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............1 TO 3 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............1 TO 3 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 2 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............SOUTHWEST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.7 FEET AT 10:57 PM FRIDAY
LOW TIDE 1.4 FEET AT 4:42 AM SATURDAY
HIGH TIDE 2.5 FEET AT 9:42 AM SATURDAY
LOW TIDE 0.2 FEET AT 4:43 PM SATURDAY
HIGH TIDE 2.6 FEET AT 11:31 PM SATURDAY
LOW TIDE 1.3 FEET AT 5:37 AM SUNDAY
HIGH TIDE 2.3 FEET AT 10:46 AM SUNDAY
AT ROTA ISLAND...
HIGH TIDE 2.5 FEET AT 10:54 PM FRIDAY
LOW TIDE 1.4 FEET AT 4:36 AM SATURDAY
HIGH TIDE 2.4 FEET AT 9:39 AM SATURDAY
LOW TIDE 0.2 FEET AT 4:37 PM SATURDAY
HIGH TIDE 2.5 FEET AT 11:28 PM SATURDAY
LOW TIDE 1.2 FEET AT 5:31 AM SUNDAY
HIGH TIDE 2.2 FEET AT 10:43 AM SUNDAY
AT TINIAN ISLAND...
HIGH TIDE 2.0 FEET AT 10:55 PM FRIDAY
LOW TIDE 0.5 FEET AT 4:19 AM SATURDAY
HIGH TIDE 1.9 FEET AT 9:40 AM SATURDAY
LOW TIDE 0.1 FEET AT 4:20 PM SATURDAY
HIGH TIDE 2.0 FEET AT 11:29 PM SATURDAY
LOW TIDE 0.4 FEET AT 5:14 AM SUNDAY
HIGH TIDE 1.7 FEET AT 10:44 AM SUNDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.3 FEET AT 11:21 PM FRIDAY
LOW TIDE 1.2 FEET AT 5:03 AM SATURDAY
HIGH TIDE 2.0 FEET AT 9:54 AM SATURDAY
LOW TIDE -0.1 FEET AT 4:50 PM SATURDAY
HIGH TIDE 2.3 FEET AT 11:55 PM SATURDAY
LOW TIDE 1.0 FEET AT 6:01 AM SUNDAY
HIGH TIDE 1.8 FEET AT 11:05 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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