356  
FZPN28 KNHC 160136  
OFFPZ8  
 
OFFSHORE WATERS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
636 PM PDT MON SEP 15 2025  
 
OFFSHORE WATERS FORECAST FOR THE E PACIFIC WITHIN 250 NM OF  
CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR  
 
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE AVERAGE  
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
PMZ101-161345-  
SYNOPSIS FOR THE E PACIFIC WITHIN 250 NM OF CENTRAL AMERICA,  
COLOMBIA, AND WITHIN 750 NM OF ECUADOR  
636 PM PDT MON SEP 15 2025  
   
SYNOPSIS  
ROUGH SEAS WILL PREVAIL OVER THE REGIONAL WATERS  
THROUGH TUE MORNING BEFORE DIMINISHING FROM SOUTH TO NORTH TUE  
AFTERNOON INTO WED. LOCALLY ROUGH SEAS MAY PERSIST OFFSHORE  
OFFSHORE OF COLOMBIA THROUGH COSTA RICA INTO EARLY THU. MODERATE  
TO FRESH NE GAP WINDS WILL PULSE IN THE GULF OF PAPAGAYO THROUGH  
MIDWEEK. MODERATE TO FRESH S TO SW WINDS ARE EXPECTED SOUTH OF  
THE MONSOON TROUGH THIS WEEK.  
 
 
 
PMZ111-161345-  
GUATEMALA AND EL SALVADOR TO 250 NM OFFSHORE-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
SE TO S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH  
THE NIGHT.    
TUE  
S WINDS 10 KT, SHIFTING TO SW TO W IN THE AFTERNOON.  
SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD 16 SECONDS. SCATTERED  
SHOWERS AND ISOLATED TSTMS THROUGH THE DAY.    
TUE NIGHT  
W TO NW WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE NIGHT.    
WED  
NW TO N WINDS 10 KT, SHIFTING TO W TO NW IN THE  
AFTERNOON. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD 14 SECONDS.  
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE DAY.    
WED NIGHT  
W TO NW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO  
SW SWELL. PERIOD 14 SECONDS.    
THU  
N TO NE WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 13 SECONDS.    
THU NIGHT  
SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
13 SECONDS.    
FRI  
N WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL. PERIOD  
13 SECONDS.    
FRI NIGHT  
SE TO S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
12 SECONDS.    
SAT  
SE TO S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
12 SECONDS.    
SAT NIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
13 SECONDS.  
 
 
 
PMZ113-161345-  
EL SALVADOR TO NORTH COSTA RICA INCLUDING THE GULFS OF FONSECA  
AND PAPAGAYO-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
OFFSHORE GULF OF PAPAGAYO, NE TO E WINDS 15 TO 20 KT.  
ELSEWHERE, SW TO W WINDS 10 KT, SHIFTING TO W TO NW LATE. SEAS  
6 TO 8 FT IN S TO SW SWELL. PERIOD 16 SECONDS.  
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE NIGHT.    
TUE  
NE TO E WINDS 15 TO 20 KT OFFSHORE GULF OF PAPAGAYO, AND  
NW TO N 10 TO 15 KT ELSEWHERE. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH  
THE DAY.    
TUE NIGHT  
NW TO N WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO  
SW SWELL. PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED  
TSTMS THROUGH THE NIGHT.    
WED  
NW TO N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE DAY.    
WED NIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO  
SW SWELL. PERIOD 14 SECONDS.    
THU  
SE WINDS 10 KT OFFSHORE GULF OF PAPAGAYO, AND S TO SW  
15 TO 20 KT ELSEWHERE. SEAS 4 TO 6 FT. PERIOD 13 SECONDS.    
THU NIGHT  
SW WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD  
13 SECONDS.    
FRI  
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
13 SECONDS.    
FRI NIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.    
SAT  
S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.    
SAT NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
13 SECONDS.  
 
 
 
PMZ115-161345-  
NORTH COSTA RICA TO WEST PANAMA TO 250 NM OFFSHORE-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
W WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH  
THE NIGHT.    
TUE  
SW TO W WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW  
SWELL. PERIOD 16 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE DAY.    
TUE NIGHT  
SW TO W WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO  
SW SWELL. PERIOD 15 SECONDS. SCATTERED TSTMS.    
WED  
SW WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS. SCATTERED TSTMS.    
WED NIGHT  
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
THU  
SW WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 13 SECONDS.    
THU NIGHT  
SW TO W WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO  
SW SWELL. PERIOD 13 SECONDS.    
FRI  
SW TO W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
13 SECONDS.    
FRI NIGHT  
SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
SAT  
SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
SAT NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.  
 
 
 
PMZ117-161345-  
EAST PANAMA AND COLOMBIA INCLUDING THE GULF OF PANAMA-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
SW TO W WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW  
SWELL. PERIOD 16 SECONDS. NUMEROUS SHOWERS AND SCATTERED TSTMS  
THROUGH THE NIGHT.    
TUE  
SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW SWELL. PERIOD  
16 SECONDS. NUMEROUS SHOWERS AND SCATTERED TSTMS THROUGH THE  
DAY.    
TUE NIGHT  
SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW SWELL.  
PERIOD 15 SECONDS. SCATTERED TSTMS THROUGH THE NIGHT.    
WED  
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL. PERIOD  
15 SECONDS. SCATTERED TSTMS THROUGH THE DAY.    
WED NIGHT  
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL.  
PERIOD 14 SECONDS.    
THU  
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL. PERIOD  
13 SECONDS.    
THU NIGHT  
SW WINDS 10 KT. SEAS 5 TO 7 FT IN SW SWELL. PERIOD  
13 SECONDS.    
FRI  
SW WINDS 10 KT. SEAS 4 TO 6 FT IN SW SWELL. PERIOD  
12 SECONDS.    
FRI NIGHT  
SW TO W WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.    
SAT  
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
SAT NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.  
 
 
 
PMZ119-161345-  
ECUADOR INCLUDING THE GULF OF GUAYAQUIL TO 250 NM OFFSHORE-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW  
SWELL. PERIOD 16 SECONDS.    
TUE  
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW SWELL.  
PERIOD 15 SECONDS.    
TUE NIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO  
SW SWELL. PERIOD 15 SECONDS.    
WED  
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED NIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO  
SW SWELL. PERIOD 13 SECONDS.    
THU  
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
13 SECONDS.    
THU NIGHT  
SW WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 12 SECONDS.    
FRI  
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
FRI NIGHT  
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD  
11 SECONDS.    
SAT  
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
SAT NIGHT  
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
12 SECONDS.  
 
 
 
PMZ121-161345-  
ECUADOR BETWEEN 250 AND 500 NM OFFSHORE-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
S TO SW WINDS 10 KT. SEAS 6 TO 9 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
TUE  
S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
TUE NIGHT  
S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
WED  
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS.    
WED NIGHT  
S WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 13 SECONDS.    
THU  
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
12 SECONDS.    
THU NIGHT  
S TO SW WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 12 SECONDS.    
FRI  
S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
FRI NIGHT  
S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 11 SECONDS.    
SAT  
S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
SAT NIGHT  
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
13 SECONDS.  
 
 
 
PMZ123-161345-  
OFFSHORE GALAPAGOS ISLANDS-  
636 PM PDT MON SEP 15 2025  
   
TONIGHT  
S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
TUE  
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS.    
TUE NIGHT  
S WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
WED  
S WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL. PERIOD  
14 SECONDS.    
WED NIGHT  
S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 13 SECONDS.    
THU  
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD 13 SECONDS.    
THU NIGHT  
S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 13 SECONDS.    
FRI  
SE TO S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.    
FRI NIGHT  
SE TO S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.    
SAT  
SE TO S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 13 SECONDS.    
SAT NIGHT  
SE TO S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
12 SECONDS.  
 
 
 
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