393
FZPQ50 PGUM 310657
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
457 PM CHST SAT JAN 31 2026
DISCUSSION
THE SHEAR LINE, ALONG WITH THE BUILDING NORTH TO
NORTHEAST SWELL IS PRODUCING A HIGH RISK OF RIP CURRENTS ALONG
NORTH AND EAST FACING REEFS, WITH A MODERATE RISK ALONG SOUTH
AND WEST FACING REEFS. THESE CONDITIONS WILL CONTINUE THROUGH
MONDAY NIGHT, WITH SURF EXPECTED TO PEAK SUNDAY AND SUNDAY NIGHT.
RISK OF LIGHTNING MAY START TO INCREASE MONDAY AS A TROPICAL
DISTURBANCE MOVES SOUTH OF THE REGION.
GUZ001-MPZ001>003-312200-
GUAM-ROTA-TINIAN-SAIPAN-
457 PM CHST SAT JAN 31 2026
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM CHST TUESDAY ALONG NORTH
FACING REEFS... .
..HIGH RIP CURRENT RISK IN EFFECT THROUGH LATE MONDAY NIGHT ALONG
NORTH AND EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM SATURDAY
THROUGH 600 AM MONDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............7 TO 9 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............EAST AT 2 TO 4 FEET.
SECONDARY PERIOD.............8 SECONDS.
WATER TEMPERATURE
IPAN BUOY..........83 DEGREES.
WINDS...............BREEZY. NORTHEAST AT 15 TO 25 MPH.
SUNDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............8 TO 10 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............12 SECONDS.
SECONDARY SWELL..............EAST AT 2 TO 4 FEET.
SECONDARY PERIOD.............8 SECONDS.
MAX HEAT INDEX.........AROUND 95.
WINDS...............BREEZY. NORTHEAST AT 20 TO 25 MPH.
OCCASIONAL GUSTS TO 35 MPH.
SUNDAY NIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............8 TO 10 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
WINDS...............BREEZY. NORTHEAST AT 20 TO 25 MPH.
OCCASIONAL GUSTS TO 35 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.3 FEET AT 5:29 PM SATURDAY
LOW TIDE -0.9 FEET AT 1:02 AM SUNDAY
HIGH TIDE 2.2 FEET AT 8:21 AM SUNDAY
LOW TIDE 1.3 FEET AT 1:30 PM SUNDAY
HIGH TIDE 2.3 FEET AT 6:27 PM SUNDAY
LOW TIDE -0.9 FEET AT 1:50 AM MONDAY
HIGH TIDE 2.2 FEET AT 8:55 AM MONDAY
AT ROTA ISLAND...
HIGH TIDE 2.1 FEET AT 5:26 PM SATURDAY
LOW TIDE -0.9 FEET AT 12:56 AM SUNDAY
HIGH TIDE 2.1 FEET AT 8:18 AM SUNDAY
LOW TIDE 1.3 FEET AT 1:24 PM SUNDAY
HIGH TIDE 2.2 FEET AT 6:24 PM SUNDAY
LOW TIDE -0.8 FEET AT 1:44 AM MONDAY
HIGH TIDE 2.1 FEET AT 8:52 AM MONDAY
AT TINIAN ISLAND...
HIGH TIDE 1.7 FEET AT 5:27 PM SATURDAY
LOW TIDE -0.3 FEET AT 12:39 AM SUNDAY
HIGH TIDE 1.6 FEET AT 8:19 AM SUNDAY
LOW TIDE 0.4 FEET AT 1:07 PM SUNDAY
HIGH TIDE 1.7 FEET AT 6:25 PM SUNDAY
LOW TIDE -0.3 FEET AT 1:27 AM MONDAY
HIGH TIDE 1.7 FEET AT 8:53 AM MONDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.3 FEET AT 5:27 PM SATURDAY
LOW TIDE -0.7 FEET AT 1:01 AM SUNDAY
HIGH TIDE 2.3 FEET AT 8:27 AM SUNDAY
LOW TIDE 1.5 FEET AT 1:30 PM SUNDAY
HIGH TIDE 2.3 FEET AT 6:27 PM SUNDAY
LOW TIDE -0.6 FEET AT 1:51 AM MONDAY
HIGH TIDE 2.3 FEET AT 9:01 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