802
FZPQ50 PGUM 190722
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
522 PM CHST MON OCT 19 2026
DISCUSSION
HAZARDOUS SURF AND A HIGH RIP CURRENT RISK WILL CONTINUE ALONG SOUTH
AND WEST FACING REEFS OF GUAM AND ROTA THROUGH TONIGHT. ELSEWHERE,
THERE IS A MODERATE RISK OF RIP CURRENTS ALONG ALL REEFS. THERE IS A
SLIGHT CHANCE OF LIGHTNING THROUGH TONIGHT. SWELLS ARE OUT OF THE
SOUTH, EVENTUALLY TURNING WEST, AND THE NORTHEAST.
GUZ001-MPZ001-192230-
GUAM-ROTA-
522 PM CHST MON OCT 19 2026
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 4 AM CHST TUESDAY ALONG
SOUTH AND WEST FACING REEFS...
...HIGH RISK OF RIP CURRENTS NOW IN EFFECT UNTIL 4 AM CHST TUESDAY
ALONG SOUTH AND WEST FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM MONDAY
THROUGH 600 AM WEDNESDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............8 TO 10 FEET.
WEST FACING REEFS............8 TO 10 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTH AT 7 TO 8 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
REAL TIME OCEAN FORECAST SYSTEM.....84 DEGREES.
WINDS...............SOUTHEAST AT 10 TO 15 MPH.
TUESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............6 TO 8 FEET.
WEST FACING REEFS............6 TO 8 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 6 TO 7 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 98.
WINDS...............EAST AT 10 TO 15 MPH.
TUESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............EAST TO NORTHEAST AT 5 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 1.5 FEET AT 9:31 PM MONDAY
HIGH TIDE 1.6 FEET AT 12:58 AM TUESDAY
LOW TIDE 0.3 FEET AT 8:36 AM TUESDAY
HIGH TIDE 2.0 FEET AT 4:26 PM TUESDAY
LOW TIDE 1.3 FEET AT 10:19 PM TUESDAY
HIGH TIDE 1.7 FEET AT 2:38 AM WEDNESDAY
AT ROTA ISLAND...
LOW TIDE 1.4 FEET AT 9:25 PM MONDAY
HIGH TIDE 1.5 FEET AT 12:55 AM TUESDAY
LOW TIDE 0.2 FEET AT 8:30 AM TUESDAY
HIGH TIDE 1.9 FEET AT 4:23 PM TUESDAY
LOW TIDE 1.2 FEET AT 10:13 PM TUESDAY
HIGH TIDE 1.6 FEET AT 2:35 AM WEDNESDAY
MPZ002-003-192230-
TINIAN-SAIPAN-
522 PM CHST MON OCT 19 2026
..HIGH SURF ADVISORY IS CANCELLED
..HIGH RIP CURRENT RISK IS CANCELLED
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM MONDAY
THROUGH 600 AM WEDNESDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............6 TO 8 FEET.
WEST FACING REEFS............6 TO 8 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 6 TO 7 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
REAL TIME OCEAN FORECAST SYSTEM.....84 DEGREES.
WINDS...............SOUTHEAST AT 10 TO 15 MPH.
TUESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 5 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 98.
WINDS...............EAST AT AROUND 10 MPH.
TUESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............6 TO 8 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 5 TO 6 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............EAST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT TINIAN ISLAND...
LOW TIDE 0.5 FEET AT 9:08 PM MONDAY
HIGH TIDE 1.2 FEET AT 12:56 AM TUESDAY
LOW TIDE 0.1 FEET AT 8:13 AM TUESDAY
HIGH TIDE 1.5 FEET AT 4:24 PM TUESDAY
LOW TIDE 0.4 FEET AT 9:56 PM TUESDAY
HIGH TIDE 1.2 FEET AT 2:36 AM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 1.5 FEET AT 9:56 PM MONDAY
HIGH TIDE 1.6 FEET AT 12:40 AM TUESDAY
LOW TIDE 0.3 FEET AT 8:46 AM TUESDAY
HIGH TIDE 2.0 FEET AT 4:41 PM TUESDAY
LOW TIDE 1.3 FEET AT 10:26 PM TUESDAY
HIGH TIDE 1.6 FEET AT 2:25 AM 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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