019
FZPQ50 PGUM 180728
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
528 PM CHST SAT JUL 18 2026
DISCUSSION
A LOW RISK OF RIP CURRENTS IS EXPECTED TO CONTINUE ALONG ALL REEFS
FOR THE NEXT FEW DAYS. DURING THE LATTER HALF OF NEXT WEEK, THE RIP
RISK MAY INCREASE BACK UP TO MODERATE WITH AN INCREASE IN SWELLS
ASSOCIATED WITH INVEST 90W.
GUZ001-MPZ001>003-182230-
GUAM-ROTA-TINIAN-SAIPAN-
528 PM CHST SAT JUL 18 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM SATURDAY
THROUGH 600 AM MONDAY
TONIGHT
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY.......... 84 DEGREES.
WINDS...............SOUTHWEST AT 10 TO 15 MPH.
SUNDAY
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 3 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............SOUTH TO SOUTHWEST AT 5 TO 10 MPH.
SUNDAY NIGHT
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 3 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............SOUTHEAST TO SOUTH AT AROUND 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
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
LOW TIDE 0.6 FEET AT 5:25 PM SUNDAY
HIGH TIDE 2.6 FEET AT 12:04 AM MONDAY
LOW TIDE 1.1 FEET AT 6:33 AM MONDAY
AT ROTA ISLAND...
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
LOW TIDE 0.5 FEET AT 5:19 PM SUNDAY
HIGH TIDE 2.4 FEET AT 12:01 AM MONDAY
LOW TIDE 1.0 FEET AT 6:27 AM MONDAY
AT TINIAN ISLAND...
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
LOW TIDE 0.2 FEET AT 5:02 PM SUNDAY
HIGH TIDE 1.9 FEET AT 12:02 AM MONDAY
LOW TIDE 0.3 FEET AT 6:10 AM MONDAY
AT TANAPAG HARBOR, SAIPAN...
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 TIDE 0.3 FEET AT 5:33 PM SUNDAY
HIGH TIDE 2.3 FEET AT 12:25 AM MONDAY
LOW TIDE 0.8 FEET AT 6:56 AM MONDAY
* 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page