403  
FZAK69 PAFG 172325  
OFFAFG  
 
OFFSHORE WATERS FORECAST  
NATIONAL WEATHER SERVICE FAIRBANKS AK  
325 PM AKDT THU SEP 17 2020  
 
OFFSHORE WATERS FORECAST FOR THE US ARCTIC WATERS  
 
SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST ONE-THIRD OF  
THE COMBINED WIND WAVE AND SWELL HEIGHT. INDIVIDUAL WAVES MAY BE  
TWICE AS HIGH.  
 
PKZ599-181230-  
325 PM AKDT THU SEP 17 2020  
   
SYNOPSIS FOR ARCTIC WATERS
 
 
A STRONG LOW OVER SOUTHWEST ALASKA WILL MOVE TO THE SEWARD  
PENINSULA AS A 985 MB LOW BY 4AM FRI AND THEN WEAKEN SLOWLY IN  
PLACE THROUGH SUN. A WEATHER FRONT EXTENDING EAST FROM THIS LOW  
WILL MOVE NORTH OVER THE NORTH SLOPE OF ALASKA TONIGHT AND THEN  
WEAKEN SLOWLY THROUGH SAT. A 990 MB LOW WILL DEVELOP ALONG THIS  
FRONT NEAR PRUDHOE BAY ON FRIDAY, THEN MOVE TO 100 NM NORTHEAST OF  
PRUDHOE BAY AS A 995 MB LOW BY 4PM SAT, THEN MOVE SLOWLY EAST.  
 

 
 
PKZ500-181230-  
WESTERN US ARCTIC OFFSHORE-  
325 PM AKDT THU SEP 17 2020  
   
TONIGHT
 
NE WINDS 20 KT. SEAS 5 FT. FOG.    
FRI
 
NE WINDS 25 KT. SEAS 5 FT. FOG.   
FRI NIGHT
 
N WINDS 25 KT. SEAS 5 FT. FOG.   
SAT
 
N WINDS 25 KT. SEAS 5 FT. FOG.   
SAT NIGHT
 
N WINDS 25 KT. SEAS 5 FT. FOG.   
SUN
 
N WINDS 20 KT. SEAS 5 FT.    
MON
 
N WINDS 15 KT. SEAS 8 FT.    
TUE
 
E WINDS 15 KT. SEAS 7 FT.  
 

 
 
PKZ505-181230-  
CENTRAL US ARCTIC OFFSHORE-  
325 PM AKDT THU SEP 17 2020  
   
TONIGHT
 
E WINDS 20 KT. SEAS 4 FT. FOG. FREEZING SPRAY.    
FRI
 
E WINDS 25 KT. SEAS 6 FT. FOG.   
FRI NIGHT
 
NE WINDS 30 KT. SEAS 8 FT. FREEZING FOG. FREEZING  
SPRAY.    
SAT
 
NE WINDS 30 KT. SEAS 7 FT. FOG. FREEZING SPRAY.    
SAT NIGHT
 
N WINDS 25 KT. SEAS 5 FT. FREEZING FOG. FREEZING  
SPRAY.    
SUN
 
N WINDS 20 KT. SEAS 5 FT.    
MON
 
W WINDS 10 KT. SEAS 5 FT.    
TUE
 
E WINDS 10 KT. SEAS 5 FT.  
 

 
 
PKZ510-181230-  
EASTERN US ARCTIC OFFSHORE-  
325 PM AKDT THU SEP 17 2020  
   
TONIGHT
 
E WINDS 25 KT. SEAS 5 FT. FREEZING FOG AFTER MIDNIGHT.  
FREEZING SPRAY.    
FRI
 
E WINDS 30 KT. SEAS 8 FT. FREEZING FOG. SNOW AND RAIN.  
FREEZING SPRAY.    
FRI NIGHT
 
NE WINDS 30 KT. SEAS 8 FT. FREEZING FOG. SNOW.  
FREEZING SPRAY.    
SAT
 
S WINDS 30 KT. SEAS 7 FT. FOG. FREEZING SPRAY.    
SAT NIGHT
 
N WINDS 25 KT. SEAS 7 FT. FREEZING FOG. FREEZING  
SPRAY.    
SUN
 
NW WINDS 25 KT. SEAS 7 FT.    
MON
 
SW WINDS 10 KT. SEAS 5 FT.    
TUE
 
E WINDS 15 KT. SEAS 6 FT.  
 

 
 
SEP 20  
 
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