885  
FZPN28 KNHC 171840  
OFFPZ8  
 
OFFSHORE WATERS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1140 AM PDT THU APR 17 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.  
 
PMZ101-180445-  
SYNOPSIS FOR THE E PACIFIC WITHIN 250 NM OF CENTRAL AMERICA,  
COLOMBIA, AND WITHIN 750 NM OF ECUADOR  
1140 AM PDT THU APR 17 2025  
   
SYNOPSIS
 
HIGH PRESSURE THAT EXTENDS FROM THE SOUTHEASTERN  
UNITED STATES TO THE NORTHWESTERN CARIBBEAN WILL SHIFT GRADUALLY  
EASTWARD DURING THE NEXT FEW DAYS, WITH THE ASSOCIATED GRADIENT  
ALLOWING FOR FRESH TO STRONG NORTHEAST TO EAST GAP WINDS ACROSS  
THE PAPAGAYO REGION, PULSING TO NEAR 30 KT AT NIGHT THROUGH SAT  
NIGHT, THEN DIMINISHING SLIGHTLY THROUGH MON NIGHT. THE SAME  
GRADIENT WILL PRODUCE MODERATE TO FRESH NORTH WINDS IN THE GULF  
OF PANAMA SOUTH TO NEAR 5N THROUGH SAT NIGHT. FRESH TO STRONG  
NORTH TO NORTHEAST WINDS ARE EXPECTED IN THE GULF OF PANAMA  
TONIGHT AND FRI NIGHT. MODERATE SOUTHWEST SWELL IS FORECAST TO  
PROPAGATE THROUGH THE REGIONAL WATERS MON.  
 
THE SANTA MARIA VOLCANO LOCATED IN SOUTHWESTERN GUATEMALA NEAR  
14.8N91.6W IS PRESENTLY UNDERGOING CONTINUOUS VOLCANIC ASH  
EMISSIONS. THE VOLCANIC ASH NEAR THE VOLCANO IS MOVING TO  
SOUTHWEST. LATEST GOES-E SATELLITE IMAGERY SHOWS RESULTANT HAZY  
SKIES ALONG THE COAST OF GUATEMALA, WITH SIMILAR CONDITIONS  
ALONG AND NEAR THE COAST NEAR 14N92W. REDUCED VISIBILITY IS  
PRESENTLY MORE LIKELY TO BE NEAR THE COAST. MARINERS ARE  
ENCOURAGED TO BE AWARE OF THE LATEST UPDATES ON THE STATUS OF  
THE VOLCANO.  
 

 
 
PMZ111-180445-  
GUATEMALA AND EL SALVADOR TO 250 NM OFFSHORE-  
   
TODAY
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN NE TO E SWELL.  
PERIOD 14 SECONDS. HAZE.    
TONIGHT
 
NE TO E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN E TO SE  
SWELL. PERIOD 16 SECONDS. HAZE.   
FRI
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN E TO SE SWELL.  
PERIOD 16 SECONDS. HAZE.    
FRI NIGHT
 
N TO NE WINDS 10 KT. SEAS 5 TO 7 FT IN E TO SE  
SWELL. PERIOD 16 SECONDS. SCATTERED SHOWERS THROUGH THE NIGHT.    
SAT
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN E TO SE SWELL.  
PERIOD 14 SECONDS. HAZE.   
SAT NIGHT
 
N WINDS 10 KT. SEAS 5 TO 7 FT IN E TO SE SWELL.  
PERIOD 14 SECONDS.    
SUN
 
N TO NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
13 SECONDS.    
SUN NIGHT
 
N WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
MON
 
N TO NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 16 SECONDS.    
MON NIGHT
 
NE WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS.  
 

 
 
PMZ113-180445-  
EL SALVADOR TO NORTH COSTA RICA INCLUDING THE GULFS OF FONSECA  
AND PAPAGAYO-  
1140 AM PDT THU APR 17 2025  
   
TODAY
 
NE TO E WINDS 20 TO 25 KT. SEAS 6 TO 9 FT IN NE TO E  
SWELL. PERIOD 10 SECONDS. HAZE.    
TONIGHT
 
NE TO E WINDS 25 KT OFFSHORE GULF OF PAPAGAYO, AND E  
15 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT. PERIOD 11 SECONDS.    
FRI
 
NE TO E WINDS 20 TO 25 KT OFFSHORE GULF OF PAPAGAYO, AND  
NE TO E 15 TO 20 KT ELSEWHERE. SEAS 6 TO 9 FT IN NE TO E SWELL.  
PERIOD 15 SECONDS. HAZE.    
FRI NIGHT
 
NE TO E WINDS 25 KT OFFSHORE GULF OF PAPAGAYO, AND  
NE TO E 20 TO 25 KT ELSEWHERE. SEAS 6 TO 9 FT IN NE TO E SWELL.  
PERIOD 16 SECONDS. HAZE.   
SAT
 
NE TO E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN NE TO E  
SWELL. PERIOD 12 SECONDS.    
SAT NIGHT
 
NE TO E WINDS 20 TO 25 KT OFFSHORE GULF OF  
PAPAGAYO, AND N TO NE 10 TO 15 KT ELSEWHERE. SEAS 4 TO 6 FT.  
PERIOD 12 SECONDS.    
SUN
 
NE TO E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S SWELL.  
PERIOD 13 SECONDS.    
SUN NIGHT
 
NE TO E WINDS 20 TO 25 KT OFFSHORE GULF OF  
PAPAGAYO, AND NE 10 TO 15 KT ELSEWHERE. SEAS 5 TO 7 FT. PERIOD  
14 SECONDS.    
MON
 
NE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD 15 SECONDS.    
MON NIGHT
 
E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD  
16 SECONDS.  
 

 
 
PMZ115-180445-  
NORTH COSTA RICA TO WEST PANAMA TO 250 NM OFFSHORE-  
1140 AM PDT THU APR 17 2025  
   
TODAY
 
NEAR THE AZUERO PENINSULA, NE WINDS 10 TO 15 KT,  
SHIFTING TO S IN THE AFTERNOON. ELSEWHERE, VARIABLE WINDS LESS  
THAN 5 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD 14 SECONDS.  
SCATTERED SHOWERS THROUGH THE DAY.    
TONIGHT
 
NEAR THE AZUERO PENINSULA, NW WINDS 10 TO 15 KT,  
SHIFTING TO N TO NE 15 TO 20 KT LATE. ELSEWHERE,  
VARIABLE WINDS LESS THAN 5 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD  
15 SECONDS.    
FRI
 
NEAR THE AZUERO PENINSULA, N TO NE WINDS 15 TO 20 KT,  
SHIFTING TO W 10 TO 15 KT IN THE AFTERNOON. ELSEWHERE, NW WINDS  
10 KT, SHIFTING TO W IN THE AFTERNOON. SEAS 5 TO 7 FT IN S  
SWELL. PERIOD 15 SECONDS.    
FRI NIGHT
 
W WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD  
15 SECONDS. SCATTERED SHOWERS THROUGH THE NIGHT.    
SAT
 
SW TO W WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
13 SECONDS.    
SAT NIGHT
 
W WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
14 SECONDS.    
SUN
 
SW TO W WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 13 SECONDS.    
SUN NIGHT
 
W WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 15 SECONDS.    
MON
 
S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 15 SECONDS.    
MON NIGHT
 
S TO SW WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 16 SECONDS.  
 

 
 
PMZ117-180445-  
EAST PANAMA AND COLOMBIA INCLUDING THE GULF OF PANAMA-  
1140 AM PDT THU APR 17 2025  
   
TODAY
 
GULF OF PANAMA, N TO NE WINDS 15 TO 20 KT. ELSEWHERE,  
NE WINDS 10 KT, SHIFTING TO NW TO N IN THE AFTERNOON. SEAS 4 TO  
6 FT. PERIOD 17 SECONDS. WINDS AND SEAS HIGHER IN AND NEAR  
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS.   
TONIGHT
 
N TO NE WINDS 15 TO 20 KT GULF OF PANAMA, AND NE  
10 TO 15 KT ELSEWHERE. SEAS 5 TO 7 FT. PERIOD 16 SECONDS.  
SCATTERED SHOWERS AND THUNDERSTORMS.    
FRI
 
N WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD 16 SECONDS.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.   
FRI NIGHT
 
GULF OF PANAMA, N WINDS 15 TO 20 KT. ELSEWHERE, N  
WINDS 10 KT, SHIFTING TO SE LATE. SEAS 4 TO 6 FT. PERIOD 16  
SECONDS. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.   
SAT
 
NW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 12 SECONDS.    
SAT NIGHT
 
NW WINDS 10 KT. SEAS 3 TO 5 FT IN MIXED SE AND SW  
SWELL. PERIOD 14 SECONDS.   
SUN
 
W WINDS 10 KT. SEAS 3 TO 5 FT IN MIXED SE AND SW SWELL.  
PERIOD 13 SECONDS.   
SUN NIGHT
 
E TO SE WINDS 10 KT. SEAS 3 TO 5 FT IN SW SWELL.  
PERIOD 14 SECONDS.    
MON
 
S WINDS 10 KT. SEAS 4 TO 6 FT IN SW SWELL. PERIOD  
14 SECONDS.    
MON NIGHT
 
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND S  
TO SW 10 KT ELSEWHERE. SEAS 4 TO 6 FT IN SW SWELL. PERIOD  
16 SECONDS.  
 

 
 
PMZ119-180445-  
ECUADOR INCLUDING THE GULF OF GUAYAQUIL TO 250 NM OFFSHORE-  
1140 AM PDT THU APR 17 2025  
   
TODAY
 
GULF OF GUAYAQUIL, VARIABLE WINDS LESS THAN 5 KT,  
BECOMING W TO NW 10 KT IN THE AFTERNOON. ELSEWHERE, SE TO S  
WINDS 10 KT, SHIFTING TO SW TO W IN THE AFTERNOON. SEAS 4 TO  
6 FT IN S SWELL. PERIOD 16 SECONDS. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
TONIGHT
 
S TO SW WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL.  
PERIOD 15 SECONDS. ISOLATED SHOWERS AND THUNDERSTORMS.   
FRI
 
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT IN S SWELL. PERIOD 15  
SECONDS. ISOLATED SCATTERED SHOWERS THROUGH THE DAY.    
FRI NIGHT
 
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
15 SECONDS. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.   
SAT
 
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 14  
SECONDS.    
SAT NIGHT
 
S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD  
13 SECONDS.    
SUN
 
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 13 SECONDS.    
SUN NIGHT
 
S TO SW WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
MON
 
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 16 SECONDS.    
MON NIGHT
 
S WINDS 10 KT. SEAS 5 TO 7 FT IN SW SWELL. PERIOD  
16 SECONDS.  
 

 
 
PMZ121-180445-  
ECUADOR BETWEEN 250 AND 500 NM OFFSHORE-  
1140 AM PDT THU APR 17 2025  
   
TODAY
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
8 SECONDS.    
TONIGHT
 
SE WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
15 SECONDS.    
FRI
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
15 SECONDS.    
FRI NIGHT
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS.    
SAT
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 13 SECONDS.    
SAT NIGHT
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 13 SECONDS.    
SUN
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS.    
SUN NIGHT
 
S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS.    
MON
 
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS.    
MON NIGHT
 
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 16 SECONDS.  
 

 
 
PMZ123-180445-  
OFFSHORE GALAPAGOS ISLANDS-  
1140 AM PDT THU APR 17 2025  
   
TODAY
 
E TO SE WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
14 SECONDS. ISOLATED SHOWERS.    
TONIGHT
 
SE WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
15 SECONDS. ISOLATED SHOWERS.    
FRI
 
SE WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD  
15 SECONDS. ISOLATED SHOWERS.    
FRI NIGHT
 
SE WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS. ISOLATED SHOWERS.    
SAT
 
SE WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL. PERIOD  
12 SECONDS.    
SAT NIGHT
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 13 SECONDS.    
SUN
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 13 SECONDS.    
SUN NIGHT
 
SE TO S WINDS 10 KT ELSEWHERE, AND VARIABLE LESS  
THAN 5 KT LEE OF GALAPAGOS ISLANDS. SEAS 5 TO 7 FT IN SW SWELL.  
PERIOD 13 SECONDS.    
MON
 
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN SW SWELL. PERIOD  
16 SECONDS.    
MON NIGHT
 
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN SW SWELL.  
PERIOD 15 SECONDS.  
 

 
 
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