078
FZPQ50 PGUM 031744
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
344 AM CHST TUE AUG 4 2026
DISCUSSION
HAZARDOUS SURF IS NOW EXPECTED ALONG WEST AND NORTH
FACING REEFS, WITH SURF DROPPING BELOW HAZARDOUS LEVELS ALONG EAST
REEFS. HOWEVER, A HIGH RIP CURRENT RISK IS NOW EXPECTED ALONG WEST,
NORTH AND EAST FACING REEFS THROUGH AT LEAST LATE SATURDAY AFTERNOON.
A MODERATE RISK OF LIGHTNING IS EXPECTED FOR THE REST OF THIS WEEK.
GUZ001-MPZ001>003-040800-
GUAM-ROTA-TINIAN-SAIPAN-
344 AM CHST TUE AUG 4 2026
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 4 PM CHST SATURDAY ALONG
WEST AND NORTH FACING REEFS...
..WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM CHST WEDNESDAY
...HIGH RIP CURRENT RISK NOW THROUGH SATURDAY AFTERNOON ALONG WEST,
NORTH AND EAST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM TUESDAY
THROUGH 600 PM WEDNESDAY
TODAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............8 TO 10 FEET.
EAST FACING REEFS............7 TO 10 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............7 TO 9 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 6 FEET.
SECONDARY PERIOD.............14 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........86 DEGREES.
MAX HEAT INDEX.........AROUND 102.
WINDS...............WINDY. WEST AT 20 TO 30 MPH WITH GUSTS TO 40 MPH.
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 10 FEET.
EAST FACING REEFS............6 TO 9 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............7 TO 9 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 6 FEET.
SECONDARY PERIOD.............14 SECONDS.
WINDS...............WINDY. WEST AT 20 TO 30 MPH WITH OCCASIONAL GUSTS
TO 40 MPH.
WEDNESDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............9 TO 10 FEET.
EAST FACING REEFS............6 TO 9 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............7 TO 9 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 7 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTH AT AROUND 6 FEET.
SECONDARY PERIOD.............14 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............WINDY. WEST AT 20 TO 30 MPH WITH OCCASIONAL GUSTS
TO 40 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 1.0 FEET AT 5:30 AM TUESDAY
HIGH TIDE 2.2 FEET AT 11:09 AM TUESDAY
LOW TIDE 0.9 FEET AT 5:13 PM TUESDAY
HIGH TIDE 2.6 FEET AT 11:29 PM TUESDAY
LOW TIDE 0.7 FEET AT 6:20 AM WEDNESDAY
HIGH TIDE 2.1 FEET AT 12:26 PM WEDNESDAY
AT ROTA ISLAND...
LOW TIDE 0.9 FEET AT 5:24 AM TUESDAY
HIGH TIDE 2.0 FEET AT 11:06 AM TUESDAY
LOW TIDE 0.9 FEET AT 5:07 PM TUESDAY
HIGH TIDE 2.4 FEET AT 11:26 PM TUESDAY
LOW TIDE 0.7 FEET AT 6:14 AM WEDNESDAY
HIGH TIDE 2.0 FEET AT 12:23 PM WEDNESDAY
AT TINIAN ISLAND...
LOW TIDE 0.3 FEET AT 5:07 AM TUESDAY
HIGH TIDE 1.6 FEET AT 11:07 AM TUESDAY
LOW TIDE 0.3 FEET AT 4:50 PM TUESDAY
HIGH TIDE 1.9 FEET AT 11:27 PM TUESDAY
LOW TIDE 0.2 FEET AT 5:57 AM WEDNESDAY
HIGH TIDE 1.5 FEET AT 12:24 PM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.8 FEET AT 5:50 AM TUESDAY
HIGH TIDE 1.7 FEET AT 11:25 AM TUESDAY
LOW TIDE 0.6 FEET AT 5:17 PM TUESDAY
HIGH TIDE 2.2 FEET AT 11:49 PM TUESDAY
LOW TIDE 0.5 FEET AT 6:40 AM WEDNESDAY
HIGH TIDE 1.6 FEET AT 12:44 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.
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