527
FZPN28 KNHC 201618
OFFPZ8
OFFSHORE WATERS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
918 AM PDT THU AUG 20 2026
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.
PMZ101-210430-
SYNOPSIS FOR THE E PACIFIC WITHIN 250 NM OF CENTRAL AMERICA,
COLOMBIA, AND WITHIN 750 NM OF ECUADOR
918 AM PDT THU AUG 20 2026
SYNOPSIS
HIGH PRESSURE WILL PERSIST OVER THE EASTERN
GULF OF AMERICA AND NORTHWESTERN CARIBBEAN INTO EARLY NEXT WEEK,
LEADING TO FRESH NE TO E GAP WINDS PULSING TO STRONG WINDS OVER
THE PAPAGAYO REGION EACH EVENING AND NIGHT. MODERATE TO FRESH
WINDS EXTENDING WELL DOWNWIND OF PAPAGAYO WILL IMPACT THE OUTER
WATERS OFFSHORE OF EL SALVADOR AND GUATEMALA THROUGH AT LEAST
EARLY NEXT WEEK. SOUTH OF THE MONSOON TROUGH, WINDS WILL
GRADUALLY DIMINISH AND REMAIN LIGHT TO GENTLE THROUGH THE
WEEKEND. MAINLY MODERATE SEAS WILL PREVAIL AWAY FROM THE GULF OF
PAPAGAYO AREA THROUGH THE NEXT SEVERAL DAYS. SOUTHEASTERLY SWELL
PRODUCING ROUGH SEAS ACROSS THE SOUTHERN WATERS WILL SUBSIDE
TODAY THROUGH FRI.
PMZ111-210430-
GUATEMALA AND EL SALVADOR TO 250 NM OFFSHORE-
918 AM PDT THU AUG 20 2026
TODAY
SE WINDS 10 TO 15 KT IN THE AFTERNOON. SEAS 5 TO 7 FT
IN SE SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED
TSTMS THROUGH THE DAY.
TONIGHT
SE WINDS 10 TO 15 KT, SHIFTING TO NE TO E LATE. SEAS
5 TO 7 FT IN S SWELL. PERIOD 13 SECONDS.
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE NIGHT.
FRI
NE TO E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 12 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE DAY.
FRI NIGHT
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 11 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE NIGHT.
SAT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD
12 SECONDS.
SAT NIGHT
NE WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD
13 SECONDS.
SUN
NE TO E WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD
13 SECONDS.
SUN NIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD
15 SECONDS.
MON
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 17 SECONDS.
MON NIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD
16 SECONDS.
PMZ113-210430-
EL SALVADOR TO NORTH COSTA RICA INCLUDING THE GULFS OF FONSECA
AND PAPAGAYO-
918 AM PDT THU AUG 20 2026
TODAY
E WINDS 15 TO 20 KT IN THE AFTERNOON. SEAS 6 TO 8 FT IN
SE SWELL. PERIOD 13 SECONDS. SCATTERED SHOWERS AND ISOLATED
TSTMS THROUGH THE DAY.
TONIGHT
E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
13 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
NIGHT.
FRI
NE TO E WINDS 20 TO 25 KT OFFSHORE GULF OF PAPAGAYO, AND
NE TO E 15 TO 20 KT ELSEWHERE. SEAS 5 TO 7 FT IN SE TO S SWELL.
PERIOD 12 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE DAY.
FRI NIGHT
E TO SE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
11 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
NIGHT.
SAT
NE TO E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
12 SECONDS.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD
12 SECONDS.
SUN
NE TO E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
11 SECONDS.
SUN NIGHT
NE TO E WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. PERIOD
14 SECONDS.
MON
NE TO E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
14 SECONDS.
MON NIGHT
E WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. PERIOD
16 SECONDS.
PMZ115-210430-
NORTH COSTA RICA TO WEST PANAMA TO 250 NM OFFSHORE-
918 AM PDT THU AUG 20 2026
TODAY
SW WINDS 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT IN S TO
SW SWELL. PERIOD 13 SECONDS. SCATTERED SHOWERS AND ISOLATED
TSTMS THROUGH THE DAY.
TONIGHT
VARIABLE WINDS LESS THAN 5 KT. SEAS 5 TO 7 FT IN S TO
SW SWELL. PERIOD 12 SECONDS. SCATTERED SHOWERS AND ISOLATED
TSTMS THROUGH THE NIGHT.
FRI
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S SWELL.
PERIOD 11 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE DAY.
FRI NIGHT
NEAR THE AZUERO PENINSULA, VARIABLE WINDS LESS THAN
5 KT. ELSEWHERE, VARIABLE WINDS LESS THAN 5 KT, BECOMING SW TO W
10 KT LATE. SEAS 4 TO 6 FT IN S SWELL. PERIOD
11 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
NIGHT.
SAT
VARIABLE WINDS LESS THAN 5 KT NEAR THE AZUERO PENINSULA,
AND SW 10 KT ELSEWHERE. SEAS 3 TO 5 FT. PERIOD 10 SECONDS.
SAT NIGHT
VARIABLE WINDS LESS THAN 5 KT NEAR THE AZUERO
PENINSULA, AND SW TO W 10 KT ELSEWHERE. SEAS 3 TO 5 FT. PERIOD
11 SECONDS.
SUN
VARIABLE WINDS LESS THAN 5 KT. SEAS 3 TO 5 FT IN S SWELL.
PERIOD 11 SECONDS.
SUN NIGHT
VARIABLE WINDS LESS THAN 5 KT. SEAS 3 TO 5 FT IN S
SWELL. PERIOD 14 SECONDS.
MON
VARIABLE WINDS LESS THAN 5 KT. SEAS 3 TO 5 FT IN S SWELL.
PERIOD 13 SECONDS.
MON NIGHT
VARIABLE WINDS LESS THAN 5 KT NEAR THE AZUERO
PENINSULA, AND SW TO W 10 KT ELSEWHERE. SEAS 2 TO 4 FT. PERIOD
16 SECONDS.
PMZ117-210430-
EAST PANAMA AND COLOMBIA INCLUDING THE GULF OF PANAMA-
918 AM PDT THU AUG 20 2026
TODAY
SW TO W WINDS 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT IN
S TO SW SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED
TSTMS THROUGH THE DAY.
TONIGHT
SW TO W WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.
PERIOD 13 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE NIGHT.
FRI
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND SW TO W
10 KT ELSEWHERE. SEAS 4 TO 6 FT IN S TO SW SWELL. PERIOD
12 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
DAY.
FRI NIGHT
SW TO W WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD
15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
NIGHT.
SAT
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND SW
10 TO 15 KT ELSEWHERE. SEAS 3 TO 5 FT. PERIOD 12 SECONDS.
SAT NIGHT
SW TO W WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD
13 SECONDS.
SUN
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND SW
10 KT ELSEWHERE. SEAS 3 TO 5 FT. PERIOD 13 SECONDS.
SUN NIGHT
W WINDS 10 KT. SEAS 2 TO 4 FT. PERIOD 15 SECONDS.
MON
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND SW
10 KT ELSEWHERE. SEAS 2 TO 4 FT. PERIOD 17 SECONDS.
MON NIGHT
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND
SW 10 KT ELSEWHERE. SEAS 3 TO 5 FT. PERIOD 16 SECONDS.
PMZ119-210430-
ECUADOR INCLUDING THE GULF OF GUAYAQUIL TO 250 NM OFFSHORE-
918 AM PDT THU AUG 20 2026
TODAY
S TO SW WINDS 10 KT IN THE AFTERNOON. SEAS 6 TO 8 FT IN
S TO SW SWELL. PERIOD 12 SECONDS.
TONIGHT
S TO SW WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.
PERIOD 11 SECONDS.
FRI
GULF OF GUAYAQUIL, VARIABLE WINDS LESS THAN 5 KT,
BECOMING W 10 TO 15 KT IN THE AFTERNOON. ELSEWHERE, S TO SW
WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD 13 SECONDS.
FRI NIGHT
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT IN S
SWELL. PERIOD 14 SECONDS.
SAT
S TO SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD
12 SECONDS.
SAT NIGHT
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD
11 SECONDS.
SUN
S TO SW WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 14 SECONDS.
SUN NIGHT
S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
17 SECONDS.
MON
S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
16 SECONDS.
MON NIGHT
S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
15 SECONDS.
PMZ121-210430-
ECUADOR BETWEEN 250 AND 500 NM OFFSHORE-
918 AM PDT THU AUG 20 2026
TODAY
SE TO S WINDS 10 KT IN THE AFTERNOON. SEAS 6 TO 8 FT IN
S SWELL. PERIOD 11 SECONDS.
TONIGHT
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 11 SECONDS.
FRI
S WINDS 10 KT. SEAS 4 TO 6 FT IN S SWELL. PERIOD
10 SECONDS.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT IN S SWELL.
PERIOD 10 SECONDS.
SAT
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 10 SECONDS.
SAT NIGHT
S WINDS 10 KT. SEAS 4 TO 6 FT IN SE TO S SWELL.
PERIOD 10 SECONDS.
SUN
S WINDS 10 KT. SEAS 4 TO 6 FT IN SE TO S SWELL. PERIOD
13 SECONDS.
SUN NIGHT
S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 16 SECONDS.
MON
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD 16 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
15 SECONDS.
PMZ123-210430-
OFFSHORE GALAPAGOS ISLANDS-
918 AM PDT THU AUG 20 2026
TODAY
SE WINDS 10 TO 15 KT IN THE AFTERNOON. SEAS 6 TO 9 FT
IN S SWELL. PERIOD 11 SECONDS.
TONIGHT
SE TO S WINDS 10 KT. SEAS 6 TO 8 FT IN SE TO S SWELL.
PERIOD 11 SECONDS.
FRI
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN SE TO S SWELL.
PERIOD 11 SECONDS.
FRI NIGHT
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN SE TO S
SWELL. PERIOD 13 SECONDS.
SAT
SE TO S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN SE TO S
SWELL. PERIOD 11 SECONDS.
SAT NIGHT
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN SE TO S
SWELL. PERIOD 13 SECONDS.
SUN
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN SE TO S SWELL.
PERIOD 13 SECONDS.
SUN NIGHT
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN SE TO S
SWELL. PERIOD 13 SECONDS.
MON
SE TO S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
13 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
12 SECONDS.
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