053
FZPQ50 PGUM 191831
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
431 AM CHST WED MAY 20 2026
DISCUSSION
A HIGH RISK OF RIP CURRENTS EXISTS ALONG EAST-FACING
REEFS AS SURF IS BETWEEN 7 AND 9 FEET. THERE IS A MODERATE RISK OF
RIP CURRENTS ALONG NORTH-FACING REEFS THAT WILL CONTINUE AT LEAST FOR
THE NEXT COUPLE OF DAYS. THE RIP CURRENT RISK ALONG EAST-FACING
REEFS MAY DECREASE TO MODERATE AROUND THURSDAY AFTERNOON, SO SURF
CONDITIONS WILL CONTINUE TO BE MONITORED.
GUZ001-MPZ001>003-200945-
GUAM-ROTA-TINIAN-SAIPAN-
431 AM CHST WED MAY 20 2026
...HIGH RISK OF RIP CURRENTS THROUGH THURSDAY AFTERNOON ALONG
EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM WEDNESDAY
THROUGH 600 PM THURSDAY
TODAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
WINDS...............EAST AT 15 TO 20 MPH.
THURSDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............7 TO 9 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
WINDS...............EAST AT 15 TO 20 MPH.
MAX HEAT INDEX.........AROUND 100.
WINDS...............EAST AT 15 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.6 FEET AT 8:52 AM WEDNESDAY
LOW TIDE -0.6 FEET AT 4:32 PM WEDNESDAY
HIGH TIDE 2.6 FEET AT 12:12 AM THURSDAY
LOW TIDE 1.9 FEET AT 5:25 AM THURSDAY
HIGH TIDE 2.5 FEET AT 9:47 AM THURSDAY
LOW TIDE -0.3 FEET AT 5:28 PM THURSDAY
HIGH TIDE 2.6 FEET AT 1:11 AM FRIDAY
AT ROTA ISLAND...
HIGH TIDE 2.4 FEET AT 8:49 AM WEDNESDAY
LOW TIDE -0.5 FEET AT 4:26 PM WEDNESDAY
HIGH TIDE 2.4 FEET AT 12:09 AM THURSDAY
LOW TIDE 1.7 FEET AT 5:19 AM THURSDAY
HIGH TIDE 2.3 FEET AT 9:44 AM THURSDAY
LOW TIDE -0.3 FEET AT 5:22 PM THURSDAY
HIGH TIDE 2.4 FEET AT 1:08 AM FRIDAY
AT TINIAN ISLAND...
HIGH TIDE 1.9 FEET AT 8:50 AM WEDNESDAY
LOW TIDE -0.2 FEET AT 4:09 PM WEDNESDAY
HIGH TIDE 1.9 FEET AT 12:10 AM THURSDAY
LOW TIDE 0.6 FEET AT 5:02 AM THURSDAY
HIGH TIDE 1.8 FEET AT 9:45 AM THURSDAY
LOW TIDE -0.1 FEET AT 5:05 PM THURSDAY
HIGH TIDE 1.9 FEET AT 1:09 AM FRIDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 1.9 FEET AT 4:44 AM WEDNESDAY
HIGH TIDE 2.2 FEET AT 8:34 AM WEDNESDAY
LOW TIDE -0.7 FEET AT 4:35 PM WEDNESDAY
HIGH TIDE 2.5 FEET AT 12:41 AM THURSDAY
LOW TIDE 1.8 FEET AT 6:03 AM THURSDAY
HIGH TIDE 2.0 FEET AT 9:33 AM THURSDAY
LOW TIDE -0.5 FEET AT 5:34 PM THURSDAY
* 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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