370  
FZPQ50 PGUM 251830  
SRFGUM  
 
SURF ZONE FORECAST FOR THE MARIANA ISLANDS  
NATIONAL WEATHER SERVICE TIYAN GU  
430 AM CHST MON AUG 26 2019  
   
SYNOPSIS
 
THE RISK OF RIP CURRENTS WILL BE MODERATE THE NEXT FEW  
DAYS ALONG EAST FACING REEFS. THERE IS A MODERATE RISK OF LIGHTNING  
THROUGH WEDNESDAY NIGHT.  
 

 
 
GUZ001>004-260930-  
GUAM-ROTA-TINIAN-SAIPAN-  
430 AM CHST MON AUG 26 2019  
 
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM MONDAY  
   
TODAY (6 AM TO 6 PM)
 
 
COASTAL WINDS............SOUTH AT 10 TO 15 MPH.  
SURF ALONG NORTH FACING REEFS............2 TO 4 FEET.  
SURF ALONG EAST FACING REEFS............5 TO 7 FEET.  
SURF ALONG SOUTH FACING REEFS............2 TO 4 FEET.  
SURF ALONG WEST FACING REEFS............2 TO 4 FEET.  
PRIMARY SWELL...............EAST AT 4 TO 5 FEET.  
PRIMARY PERIOD..............10 SECONDS.  
SECONDARY SWELL...............WEST AT AROUND 2 FEET.  
SECONDARY PERIOD..............10 SECONDS.  
 
RIP CURRENT RISK.....MODERATE. WAVE CONDITIONS SUPPORT STRONGER OR  
MORE FREQUENT RIP CURRENTS. ALWAYS HAVE A  
FLOTATION DEVICE WITH YOU IN THE WATER.  
 
SEA SURFACE TEMPERATURE AT RITIDIAN BUOY...85 DEGREES.  
MAXIMUM AFTERNOON HEAT INDEX...........AROUND 99.  
 
   
TONIGHT (6 PM TO 6 AM TUESDAY)
 
 
COASTAL WINDS............LIGHT AND VARIABLE.  
SURF ALONG NORTH FACING REEFS............2 TO 4 FEET.  
SURF ALONG EAST FACING REEFS............4 TO 6 FEET.  
SURF ALONG SOUTH FACING REEFS............2 TO 4 FEET.  
SURF ALONG WEST FACING REEFS............2 TO 4 FEET.  
PRIMARY SWELL...............EAST AT 3 TO 4 FEET.  
PRIMARY PERIOD..............10 SECONDS.  
SECONDARY SWELL...............WEST AT AROUND 2 FEET.  
SECONDARY PERIOD..............10 SECONDS.  
 
RIP CURRENT RISK.....MODERATE. WAVE CONDITIONS SUPPORT STRONGER OR  
MORE FREQUENT RIP CURRENTS. ALWAYS HAVE A  
FLOTATION DEVICE WITH YOU IN THE WATER.  
 
   
TUESDAY (6 AM TO 6 PM)
 
 
COASTAL WINDS............SOUTHEAST AT AROUND 10 MPH.  
SURF ALONG NORTH FACING REEFS............1 TO 3 FEET.  
SURF ALONG EAST FACING REEFS............3 TO 5 FEET.  
SURF ALONG SOUTH FACING REEFS............1 TO 3 FEET.  
SURF ALONG WEST FACING REEFS............2 TO 4 FEET.  
PRIMARY SWELL...............EAST AT AROUND 3 FEET.  
PRIMARY PERIOD..............9 SECONDS.  
SECONDARY SWELL...............WEST AT AROUND 2 FEET.  
SECONDARY PERIOD..............9 SECONDS.  
 
RIP CURRENT RISK.....MODERATE. WAVE CONDITIONS SUPPORT STRONGER OR  
MORE FREQUENT RIP CURRENTS. ALWAYS HAVE A  
FLOTATION DEVICE WITH YOU IN THE WATER.  
 
MAXIMUM AFTERNOON HEAT INDEX...........AROUND 101.  
   
OUTLOOK
 
LITTLE CHANGE TUESDAY NIGHT.  
 
TIDE INFORMATION FOR THE NEXT 36 HOURS...  
 
AT APRA HARBOR, GUAM...  
LOW TIDE -0.1 FEET AT 9:54 AM MONDAY  
HIGH TIDE 2.1 FEET AT 5:18 PM MONDAY  
LOW TIDE 1.5 FEET AT 10:12 PM MONDAY  
HIGH TIDE 2.2 FEET AT 3:26 AM TUESDAY  
LOW TIDE -0.3 FEET AT 10:54 AM TUESDAY  
HIGH TIDE 2.3 FEET AT 6:12 PM TUESDAY  
LOW TIDE 1.5 FEET AT 11:19 PM TUESDAY  
 
AT ROTA ISLAND...  
LOW TIDE -0.1 FEET AT 9:48 AM MONDAY  
HIGH TIDE 2.0 FEET AT 5:15 PM MONDAY  
LOW TIDE 1.4 FEET AT 10:06 PM MONDAY  
HIGH TIDE 2.1 FEET AT 3:23 AM TUESDAY  
LOW TIDE -0.3 FEET AT 10:48 AM TUESDAY  
HIGH TIDE 2.1 FEET AT 6:09 PM TUESDAY  
LOW TIDE 1.4 FEET AT 11:13 PM TUESDAY  
 
AT TINIAN ISLAND...  
LOW TIDE -0.0 FEET AT 9:31 AM MONDAY  
HIGH TIDE 1.6 FEET AT 5:16 PM MONDAY  
LOW TIDE 0.5 FEET AT 9:49 PM MONDAY  
HIGH TIDE 1.7 FEET AT 3:24 AM TUESDAY  
LOW TIDE -0.1 FEET AT 10:31 AM TUESDAY  
HIGH TIDE 1.7 FEET AT 6:10 PM TUESDAY  
LOW TIDE 0.5 FEET AT 10:56 PM TUESDAY  
 
AT TANAPAG HARBOR, SAIPAN...  
LOW TIDE 0.0 FEET AT 10:05 AM MONDAY  
HIGH TIDE 1.9 FEET AT 5:48 PM MONDAY  
LOW TIDE 1.5 FEET AT 10:10 PM MONDAY  
HIGH TIDE 2.1 FEET AT 3:11 AM TUESDAY  
LOW TIDE -0.2 FEET AT 10:58 AM TUESDAY  
HIGH TIDE 2.1 FEET AT 6:38 PM TUESDAY  
LOW TIDE 1.5 FEET AT 11:10 PM TUESDAY  
 

 
 
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