614
FZPQ50 PGUM 201932
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
532 AM CHST THU MAY 21 2026
DISCUSSION
A HIGH RISK OF RIP CURRENTS ALONG EAST-FACING REEFS IS
EXPECTED THROUGH THIS AFTERNOON BEFORE BECOMING MODERATE THIS
EVENING. THERE IS ALSO A MODERATE RISK OF RIP CURRENTS ALONG NORTH-
FACING REEFS FOR THE NEXT SEVERAL DAYS.
GUZ001-MPZ001>003-211045-
GUAM-ROTA-TINIAN-SAIPAN-
532 AM CHST THU MAY 21 2026
...HIGH RISK OF RIP CURRENTS UNTIL 4 PM CHST THIS AFTERNOON
ALONG EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM THURSDAY
THROUGH 600 PM FRIDAY
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 4 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 7 FEET.
PRIMARY PERIOD...............8 SECONDS.
WATER TEMPERATURE
IPAN BUOY..........83 DEGREES.
MAX HEAT INDEX.........AROUND 101.
WINDS...............EAST AT 15 TO 20 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............6 TO 8 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............8 SECONDS.
WINDS...............EAST AT 10 TO 20 MPH.
FRIDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............6 TO 8 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............8 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............EAST AT 10 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
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
LOW TIDE 1.8 FEET AT 6:34 AM FRIDAY
HIGH TIDE 2.3 FEET AT 10:51 AM FRIDAY
LOW TIDE -0.1 FEET AT 6:26 PM FRIDAY
AT ROTA ISLAND...
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
LOW TIDE 1.7 FEET AT 6:28 AM FRIDAY
HIGH TIDE 2.2 FEET AT 10:48 AM FRIDAY
LOW TIDE -0.1 FEET AT 6:20 PM FRIDAY
AT TINIAN ISLAND...
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
LOW TIDE 0.6 FEET AT 6:11 AM FRIDAY
HIGH TIDE 1.7 FEET AT 10:49 AM FRIDAY
LOW TIDE 0.0 FEET AT 6:03 PM FRIDAY
AT TANAPAG HARBOR, SAIPAN...
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
HIGH TIDE 2.4 FEET AT 1:28 AM FRIDAY
LOW TIDE 1.6 FEET AT 7:16 AM FRIDAY
HIGH TIDE 1.8 FEET AT 10:51 AM FRIDAY
LOW TIDE -0.2 FEET AT 6:33 PM FRIDAY
* 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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