269  
FZHW51 PHFO 181329  
CWFHI1  
 
GENERALIZED STATEWIDE COASTAL WATERS FORECAST FOR HAWAII  
NATIONAL WEATHER SERVICE HONOLULU HI  
329 AM HST SAT AUG 18 2018  
   
SYNOPSIS FOR HAWAIIAN COASTAL WATERS
 
 
A WEAK TROUGH OF LOW PRESSURE WILL MOVE THROUGH THE MARINE AREA  
TODAY AND TONIGHT. LIGHT TO MODERATE TRADE WINDS WILL PERSIST  
TODAY, THEN INCREASE TO MODERATE AND LOCALLY STRONG LEVELS  
TONIGHT AND SUNDAY AS HIGH PRESSURE BUILDS NORTHEAST OF THE  
ISLAND CHAIN. MODERATE TO STRONG TRADE WINDS ARE THEN EXPECTED  
SUNDAY NIGHT THROUGH THE MIDDLE OF NEXT WEEK AS HURRICANE LANE IS  
FORECAST TO PASS BY TO THE SOUTH OF THE BIG ISLAND. IT IS STILL  
TOO EARLY TO DETERMINE EXACT IMPACTS THAT HURRICANE LANE MAY HAVE  
ON THE COASTAL WATERS, SO MARINERS ARE URGED TO KEEP UP TO DATE  
WITH THE LATEST FORECASTS.  
 

 
 
HAWAIIAN WATERS WITHIN 40 NAUTICAL MILES INCLUDING THE CHANNELS-  
 
   
TODAY
 
EAST WINDS 15 TO 20 KNOTS. WIND WAVES 3 TO 5 FEET.  
SCATTERED HEAVY SHOWERS AND ISOLATED THUNDERSTORMS.   
TONIGHT
 
EAST WINDS 15 TO 25 KNOTS. WIND WAVES 3 TO 5 FEET.  
SCATTERED HEAVY SHOWERS AND ISOLATED THUNDERSTORMS.   
SUNDAY
 
EAST WINDS 15 TO 25 KNOTS. WIND WAVES 3 TO 6 FEET.  
SCATTERED HEAVY SHOWERS.    
SUNDAY NIGHT
 
EAST WINDS 15 TO 25 KNOTS. WIND WAVES 4 TO 8  
FEET. EAST SWELL 3 TO 5 FEET. SCATTERED SHOWERS.    
MONDAY AND MONDAY NIGHT
 
EAST WINDS 15 TO 25 KNOTS. WIND WAVES  
5 TO 10 FEET. EAST SWELL 3 TO 6 FEET. NORTH SWELL 2 TO 3 FEET.  
ISOLATED SHOWERS.   
TUESDAY THROUGH WEDNESDAY
 
TROPICAL STORM CONDITIONS POSSIBLE  
FOR THE WATERS SOUTH OF THE BIG ISLAND. ELSEWHERE, EAST WINDS 20  
TO 25 KNOTS. WIND WAVES 6 TO 11 FEET. EAST SWELL 3 TO 7 FEET.  
NORTH SWELL 4 TO 5 FEET. SCATTERED SHOWERS.  
 

 
 
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