517
FZPQ50 PGUM 011831
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
431 AM CHST MON FEB 2 2026
DISCUSSION
NORTHERLY SWELL AND A SHEAR LINE PRODUCING SIGNIFICANT
NORTHEAST SWELL CONTINUE TO BUILD SURF ALONG NORTH AND EAST FACING
REEFS. HAZARDOUS LEVELS OF 9 FEET FOR NORTH FACING REEFS, A HIGH RISK
OF RIP CURRENTS ALONG NORTH AND EAST FACING REEFS AND A MODERATE
RISK OF RIP CURRENTS ALONG SOUTH AND WEST FACING REEFS ARE EXPECTED
THROUGH LATE TONIGHT. A MODERATE RISK OF LIGHTNING IS EXPECTED
THROUGH MIDWEEK AS A TROPICAL DISTURBANCE MOVES SOUTH OF THE REGION.
GUZ001-MPZ001>003-020945-
GUAM-ROTA-TINIAN-SAIPAN-
431 AM CHST MON FEB 2 2026
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM CHST TUESDAY ALONG NORTH
FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH LATE TONIGHT ALONG NORTH AND EAST
FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM MONDAY
THROUGH 600 PM TUESDAY
TODAY
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 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
WATER TEMPERATURE
IPAN BUOY..........82 DEGREES.
MAX HEAT INDEX.........AROUND 97.
WINDS...............BREEZY. NORTHEAST AT 15 TO 25 MPH WITH
OCCASIONAL GUSTS TO 35 MPH.
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............9 TO 11 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............4 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
WINDS...............BREEZY. EAST AT 10 TO 25 MPH WITH
OCCASIONAL GUSTS TO 35 MPH.
TUESDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............6 TO 8 FEET.
EAST FACING REEFS............8 TO 10 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 4 FEET.
SECONDARY PERIOD.............11 SECONDS.
MAX HEAT INDEX.........AROUND 96.
WINDS...............EAST AT 15 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.2 FEET AT 8:55 AM MONDAY
LOW TIDE 1.2 FEET AT 2:17 PM MONDAY
HIGH TIDE 2.3 FEET AT 7:20 PM MONDAY
LOW TIDE -0.7 FEET AT 2:33 AM TUESDAY
HIGH TIDE 2.2 FEET AT 9:27 AM TUESDAY
LOW TIDE 1.0 FEET AT 3:03 PM TUESDAY
AT ROTA ISLAND...
HIGH TIDE 2.1 FEET AT 8:52 AM MONDAY
LOW TIDE 1.1 FEET AT 2:11 PM MONDAY
HIGH TIDE 2.2 FEET AT 7:17 PM MONDAY
LOW TIDE -0.7 FEET AT 2:27 AM TUESDAY
HIGH TIDE 2.1 FEET AT 9:24 AM TUESDAY
LOW TIDE 1.0 FEET AT 2:57 PM TUESDAY
AT TINIAN ISLAND...
HIGH TIDE 1.7 FEET AT 8:53 AM MONDAY
LOW TIDE 0.4 FEET AT 1:54 PM MONDAY
HIGH TIDE 1.7 FEET AT 7:18 PM MONDAY
LOW TIDE -0.2 FEET AT 2:10 AM TUESDAY
HIGH TIDE 1.7 FEET AT 9:25 AM TUESDAY
LOW TIDE 0.3 FEET AT 2:40 PM TUESDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.3 FEET AT 9:01 AM MONDAY
LOW TIDE 1.4 FEET AT 2:20 PM MONDAY
HIGH TIDE 2.3 FEET AT 7:24 PM MONDAY
LOW TIDE -0.4 FEET AT 2:36 AM TUESDAY
HIGH TIDE 2.3 FEET AT 9:34 AM TUESDAY
LOW TIDE 1.2 FEET AT 3:06 PM TUESDAY
* 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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