133
FZPQ50 PGUM 131138 CCA
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS...CORRECTED
NATIONAL WEATHER SERVICE TIYAN GU
938 PM CHST THU AUG 13 2026
DISCUSSION
A HIGH RISK OF RIP CURRENTS AND HAZARDOUS SURF CONTINUES ALONG WEST-
FACING REEFS THROUGH AT LEAST FRIDAY AFTERNOON. THIS MAY NEED TO BE
EXTENDED FURTHER IF THE SURF REMAINS ELEVATED. MEANWHILE, A MODERATE
RISK OF RIP CURRENTS CONTINUES ALONG SOUTH- AND NORTH-FACING REEFS
THROUGH THE WEEKEND.
GUZ001-MPZ001>003-132100-
GUAM-ROTA-TINIAN-SAIPAN-
938 PM CHST THU AUG 13 2026
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 4 PM CHST FRIDAY ALONG
WEST FACING REEFS...
...HIGH RISK OF RIP CURRENTS NOW IN EFFECT THROUGH FRIDAY AFTERNOON
ALONG WEST FACING REEFS...
CORRECTED HEADLINES.
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM THURSDAY
THROUGH 600 AM SATURDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 7 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............9 TO 11 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 6 TO 8 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
WATER TEMPERATURE
IPAN BUOY..........AROUND 86 DEGREES.
WINDS...............SOUTHWEST AT 10 TO 20 MPH.
FRIDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 7 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............8 TO 11 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 8 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............WEST AT 10 TO 20 MPH.
FRIDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 7 FEET.
EAST FACING REEFS.............2 TO 4 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS.............7 TO 10 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 7 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
WINDS...............WEST AT 10 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.6 FEET AT 8:58 PM THURSDAY
LOW TIDE 1.3 FEET AT 2:34 AM FRIDAY
HIGH TIDE 2.7 FEET AT 7:52 AM FRIDAY
LOW TIDE 0.0 FEET AT 2:53 PM FRIDAY
HIGH TIDE 2.6 FEET AT 9:28 PM FRIDAY
LOW TIDE 1.1 FEET AT 3:22 AM SATURDAY
HIGH TIDE 2.6 FEET AT 8:46 AM SATURDAY
AT ROTA ISLAND...
HIGH TIDE 2.5 FEET AT 8:55 PM THURSDAY
LOW TIDE 1.3 FEET AT 2:28 AM FRIDAY
HIGH TIDE 2.6 FEET AT 7:49 AM FRIDAY
LOW TIDE 0.0 FEET AT 2:47 PM FRIDAY
HIGH TIDE 2.5 FEET AT 9:25 PM FRIDAY
LOW TIDE 1.1 FEET AT 3:16 AM SATURDAY
HIGH TIDE 2.4 FEET AT 8:43 AM SATURDAY
AT TINIAN ISLAND...
HIGH TIDE 1.9 FEET AT 8:56 PM THURSDAY
LOW TIDE 0.4 FEET AT 2:11 AM FRIDAY
HIGH TIDE 2.0 FEET AT 7:50 AM FRIDAY
LOW TIDE 0.0 FEET AT 2:30 PM FRIDAY
HIGH TIDE 1.9 FEET AT 9:26 PM FRIDAY
LOW TIDE 0.4 FEET AT 2:59 AM SATURDAY
HIGH TIDE 1.9 FEET AT 8:44 AM SATURDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.3 FEET AT 9:16 PM THURSDAY
LOW TIDE 1.2 FEET AT 2:45 AM FRIDAY
HIGH TIDE 2.2 FEET AT 8:01 AM FRIDAY
LOW TIDE -0.2 FEET AT 3:02 PM FRIDAY
HIGH TIDE 2.2 FEET AT 9:48 PM FRIDAY
LOW TIDE 1.0 FEET AT 3:33 AM SATURDAY
HIGH TIDE 2.1 FEET AT 8:59 AM SATURDAY
* 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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