774  
FZPQ50 PGUM 080531  
SRFGUM  
 
SURF ZONE FORECAST FOR THE MARIANA ISLANDS  
NATIONAL WEATHER SERVICE TIYAN GU  
331 PM CHST TUE JUL 8 2025  
   
DISCUSSION  
A LOW RISK OF RIP CURRENTS IS EXPECTED ALONG ALL  
REEFS FOR THE REST OF THE WEEK. SURF AND RIP RISK COULD RISE TOWARD  
THE WEEKEND ALONG WEST AND NORTH FACING REEFS, DUE TO THE ARRIVAL OF  
A DEVELOPING WEST-NORTHWEST SWELL EMANATING FROM A DISTANT TROPICAL  
DISTURBANCE. A MODERATE RISK OF LIGHTNING IS EXPECTED FOR MOST OF THE  
WEEK AS AN UNSETTLED PATTERN CONTINUES.  
 
 
 
GUZ001-MPZ001>003-082045-  
GUAM-ROTA-TINIAN-SAIPAN-  
331 PM CHST TUE JUL 8 2025  
 
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM TUESDAY  
THROUGH 600 AM THURSDAY  
   
TONIGHT  
 
RIP CURRENT RISK.....LOW *.  
SURF HEIGHT  
NORTH FACING REEFS............1 TO 3 FEET.  
EAST FACING REEFS............2 TO 4 FEET.  
SOUTH FACING REEFS............1 TO 3 FEET.  
WEST FACING REEFS............AROUND 1 FOOT.  
SWELL/PERIOD  
PRIMARY SWELL................EAST AT 2 TO 3 FEET.  
PRIMARY PERIOD...............8 SECONDS.  
WATER TEMPERATURE  
RITIDIAN BUOY.......... 86 DEGREES.  
WINDS...............SOUTH AT 10 TO 15 MPH.  
   
WEDNESDAY  
 
RIP CURRENT RISK.....LOW *.  
SURF HEIGHT  
NORTH FACING REEFS............1 TO 3 FEET.  
EAST FACING REEFS............2 TO 3 FEET.  
SOUTH FACING REEFS............1 TO 3 FEET.  
WEST FACING REEFS............AROUND 1 FOOT.  
SWELL/PERIOD  
PRIMARY SWELL................EAST AT AROUND 3 FEET.  
PRIMARY PERIOD...............8 SECONDS.  
MAX HEAT INDEX.........AROUND 101.  
WINDS...............SOUTH AT AROUND 10 MPH.  
   
WEDNESDAY NIGHT  
 
RIP CURRENT RISK.....LOW *.  
SURF HEIGHT  
NORTH FACING REEFS............1 TO 3 FEET.  
EAST FACING REEFS............2 TO 3 FEET.  
SOUTH FACING REEFS............1 TO 3 FEET.  
WEST FACING REEFS............AROUND 1 FOOT.  
SWELL/PERIOD  
PRIMARY SWELL................EAST AT 2 TO 3 FEET.  
PRIMARY PERIOD...............8 SECONDS.  
WINDS...............SOUTHEAST AT AROUND 10 MPH.  
 
TIDE INFORMATION FOR THE NEXT 36 HOURS...  
 
AT APRA HARBOR, GUAM...  
HIGH TIDE 2.3 FEET AT 7:50 PM TUESDAY  
LOW TIDE 1.9 FEET AT 12:35 AM WEDNESDAY  
HIGH TIDE 2.4 FEET AT 5:12 AM WEDNESDAY  
LOW TIDE -0.1 FEET AT 12:48 PM WEDNESDAY  
HIGH TIDE 2.4 FEET AT 8:27 PM WEDNESDAY  
LOW TIDE 1.9 FEET AT 1:22 AM THURSDAY  
 
AT ROTA ISLAND...  
HIGH TIDE 2.2 FEET AT 7:47 PM TUESDAY  
LOW TIDE 1.8 FEET AT 12:29 AM WEDNESDAY  
HIGH TIDE 2.2 FEET AT 5:09 AM WEDNESDAY  
LOW TIDE -0.1 FEET AT 12:42 PM WEDNESDAY  
HIGH TIDE 2.3 FEET AT 8:24 PM WEDNESDAY  
LOW TIDE 1.8 FEET AT 1:16 AM THURSDAY  
 
AT TINIAN ISLAND...  
HIGH TIDE 1.6 FEET AT 8:02 PM TUESDAY  
LOW TIDE 1.5 FEET AT 11:15 PM TUESDAY  
HIGH TIDE 1.8 FEET AT 3:58 AM WEDNESDAY  
LOW TIDE -0.2 FEET AT 12:28 PM WEDNESDAY  
HIGH TIDE 1.7 FEET AT 8:39 PM WEDNESDAY  
LOW TIDE 1.5 FEET AT 12:05 AM THURSDAY  
 
AT TANAPAG HARBOR, SAIPAN...  
HIGH TIDE 1.9 FEET AT 8:29 PM TUESDAY  
LOW TIDE 1.8 FEET AT 11:33 PM TUESDAY  
HIGH TIDE 2.1 FEET AT 4:42 AM WEDNESDAY  
LOW TIDE -0.3 FEET AT 12:55 PM WEDNESDAY  
HIGH TIDE 2.0 FEET AT 9:03 PM WEDNESDAY  
LOW TIDE 1.8 FEET AT 12:45 AM 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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