769
FZPQ50 PGUM 111829
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
429 AM CHST TUE MAY 12 2026
DISCUSSION
THERE IS A MODERATE RISK OF RIP CURRENTS ALONG NORTH
AND EAST FACING REEFS, GENERATED BY THE EASTERLY TRADE SWELL WHICH
CONTINUES TO TREND DOWNWARD. THERE WILL BE A MODERATE RISK FOR
LIGHTNING TONIGHT THROUGH TONIGHT. A HIGH RISK OF RIP CURRENTS MAY
RETURN ALONG EAST FACING REEFS LATE THIS COMING WEEKEND AS THE TRADE
WIND AND SWELL REINVIGORATE.
GUZ001-MPZ001>003-120930-
GUAM-ROTA-TINIAN-SAIPAN-
429 AM CHST TUE MAY 12 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM TUESDAY
THROUGH 600 PM WEDNESDAY
TODAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............AROUND 1 FOOT.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 3 TO 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........84 DEGREES.
MAX HEAT INDEX.........AROUND 100.
WINDS...............EAST AT 10 TO 15 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............AROUND 1 FOOT.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 3 TO 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
WINDS...............SOUTHEAST AT AROUND 10 MPH.
WEDNESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............AROUND 1 FOOT.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 3 TO 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............SOUTHEAST AT AROUND 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 1.1 FEET AT 10:18 AM TUESDAY
HIGH TIDE 2.0 FEET AT 3:43 PM TUESDAY
LOW TIDE 0.8 FEET AT 9:49 PM TUESDAY
HIGH TIDE 2.5 FEET AT 4:26 AM WEDNESDAY
LOW TIDE 0.8 FEET AT 11:00 AM WEDNESDAY
HIGH TIDE 2.1 FEET AT 5:04 PM WEDNESDAY
AT ROTA ISLAND...
LOW TIDE 1.1 FEET AT 10:12 AM TUESDAY
HIGH TIDE 1.9 FEET AT 3:40 PM TUESDAY
LOW TIDE 0.7 FEET AT 9:43 PM TUESDAY
HIGH TIDE 2.3 FEET AT 4:23 AM WEDNESDAY
LOW TIDE 0.7 FEET AT 10:54 AM WEDNESDAY
HIGH TIDE 2.0 FEET AT 5:01 PM WEDNESDAY
AT TINIAN ISLAND...
LOW TIDE 0.4 FEET AT 9:55 AM TUESDAY
HIGH TIDE 1.5 FEET AT 3:41 PM TUESDAY
LOW TIDE 0.3 FEET AT 9:26 PM TUESDAY
HIGH TIDE 1.8 FEET AT 4:24 AM WEDNESDAY
LOW TIDE 0.3 FEET AT 10:37 AM WEDNESDAY
HIGH TIDE 1.6 FEET AT 5:02 PM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.9 FEET AT 10:32 AM TUESDAY
HIGH TIDE 1.6 FEET AT 4:00 PM TUESDAY
LOW TIDE 0.6 FEET AT 9:50 PM TUESDAY
HIGH TIDE 2.2 FEET AT 4:32 AM WEDNESDAY
LOW TIDE 0.5 FEET AT 11:06 AM WEDNESDAY
HIGH TIDE 1.7 FEET AT 5:20 PM WEDNESDAY
* 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