639
FZPQ50 PGUM 311852
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
452 AM CHST SUN FEB 1 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 TODAY AND TONIGHT.
RISK OF LIGHTNING MAY START TO INCREASE MONDAY AS A TROPICAL
DISTURBANCE MOVES SOUTH OF THE REGION.
GUZ001-MPZ001>003-011000-
GUAM-ROTA-TINIAN-SAIPAN-
452 AM CHST SUN FEB 1 2026
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM CHST TUESDAY ALONG NORTH
FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH LATE MONDAY NIGHT ALONG
NORTH AND EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SUNDAY
THROUGH 600 PM MONDAY
TODAY
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.
WATER TEMPERATURE
IPAN BUOY..........82 DEGREES.
MAX HEAT INDEX.........AROUND 95.
WINDS...............BREEZY. NORTHEAST AT 15 TO 25 MPH.
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 FEET.
EAST FACING REEFS............9 TO 11 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 6 TO 8 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
WINDS...............BREEZY. NORTHEAST AT 15 TO 25 MPH.
MONDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 11 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...............10 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............11 SECONDS.
MAX HEAT INDEX.........AROUND 97.
WINDS...............BREEZY. EAST AT 15 TO 25 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
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
LOW TIDE 1.2 FEET AT 2:17 PM MONDAY
AT ROTA ISLAND...
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
LOW TIDE 1.1 FEET AT 2:11 PM MONDAY
AT TINIAN ISLAND...
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
LOW TIDE 0.4 FEET AT 1:54 PM MONDAY
AT TANAPAG HARBOR, SAIPAN...
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 TIDE 1.4 FEET AT 2:20 PM 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.
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