410
FZPN28 KNHC 182138
OFFPZ8
OFFSHORE WATERS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
238 PM PDT TUE AUG 18 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.
PMZ101-190945-
SYNOPSIS FOR THE E PACIFIC WITHIN 250 NM OF CENTRAL AMERICA,
COLOMBIA, AND WITHIN 750 NM OF ECUADOR
238 PM PDT TUE AUG 18 2026
SYNOPSIS
THE PRESSURE GRADIENT BETWEEN HIGH PRESSURE OVER THE
NORTHWESTERN CARIBBEAN AND RELATIVELY LOWER PRESSURE OVER
CENTRAL AMERICA WILL LEAD TO FRESH NE TO E GAP WINDS PULSING TO
STRONG WINDS OVER THE PAPAGAYO REGION EACH EVENING AND NIGHT
THROUGH THE REST OF THE WEEK, RESULTING IN ROUGH SEAS. MODERATE
TO FRESH WINDS EXTENDING WELL DOWNWIND OF PAPAGAYO WILL IMPACT
THE OUTER WATERS OFFSHORE OF EL SALVADOR AND GUATEMALA AT TIMES.
MODERATE TO FRESH SOUTHERLY WINDS SOUTH OF THE MONSOON TROUGH AND
ACROSS THE GALAPAGOS WATERS WILL GRADUALLY DIMINISH THROUGH THU.
MODERATE CROSS-EQUATORIAL SW SWELL MOVING INTO THE REGIONAL
WATERS TODAY WILL CONTINUE TO MERGE WITH LARGE SE SWELL
DOMINATING THE SOUTHERN PACIFIC WATERS WELL SOUTH OF THE
GALAPAGOS TO PRODUCE ROUGH SEAS 8 FT AND GREATER S OF 01N, AND
MODERATE SEAS ELSEWHERE THROUGH THU, THEN QUICKLY SUBSIDE.
PMZ111-190945-
GUATEMALA AND EL SALVADOR TO 250 NM OFFSHORE-
238 PM PDT TUE AUG 18 2026
TONIGHT
NE TO E WINDS 10 KT, INCREASING TO 15 TO 20 KT LATE.
SEAS 5 TO 7 FT IN SW SWELL. PERIOD 15 SECONDS.
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE NIGHT.
WED
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S SWELL. PERIOD
15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
DAY.
WED NIGHT
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN SE SWELL.
PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE NIGHT.
THU
E TO SE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
DAY.
THU NIGHT
E TO SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN SE TO
S SWELL. PERIOD 11 SECONDS.
FRI
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD
11 SECONDS.
FRI NIGHT
NE TO E WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 12 SECONDS.
SAT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD
12 SECONDS.
SAT NIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S
SWELL. PERIOD 13 SECONDS.
SUN
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD 13 SECONDS.
SUN NIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD
15 SECONDS.
PMZ113-190945-
EL SALVADOR TO NORTH COSTA RICA INCLUDING THE GULFS OF FONSECA
AND PAPAGAYO-
238 PM PDT TUE AUG 18 2026
TONIGHT
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S SWELL.
PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE NIGHT.
WED
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT. PERIOD 15 SECONDS.
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE DAY.
WED NIGHT
E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
NIGHT.
THU
E TO SE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT IN SE TO S
SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS
THROUGH THE DAY.
THU NIGHT
SE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
11 SECONDS.
FRI
NE TO E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
11 SECONDS.
FRI NIGHT
E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD
11 SECONDS.
SAT
E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. PERIOD 12 SECONDS.
SAT NIGHT
E WINDS 15 TO 20 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
13 SECONDS.
PMZ115-190945-
NORTH COSTA RICA TO WEST PANAMA TO 250 NM OFFSHORE-
238 PM PDT TUE AUG 18 2026
TONIGHT
VARIABLE WINDS LESS THAN 5 KT NEAR THE AZUERO
PENINSULA, AND S TO SW 10 KT ELSEWHERE. SEAS 3 TO 5 FT. PERIOD
15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE
NIGHT.
WED
VARIABLE WINDS LESS THAN 5 KT NEAR THE AZUERO PENINSULA,
AND S TO SW 10 KT ELSEWHERE. SEAS 4 TO 6 FT IN S TO SW SWELL.
PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE DAY.
WED NIGHT
SW TO W WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW
SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS
THROUGH THE NIGHT.
THU
NEAR THE AZUERO PENINSULA, VARIABLE WINDS LESS THAN 5 KT
IN THE MORNING. VARIABLE WINDS LESS THAN 5 KT IN THE AFTERNOON.
ELSEWHERE, S TO SW WINDS 10 KT IN THE MORNING. SEAS 4 TO 6 FT IN
S TO SW SWELL. PERIOD 13 SECONDS. SCATTERED SHOWERS AND ISOLATED
TSTMS THROUGH THE DAY.
THU NIGHT
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S
TO SW SWELL. PERIOD 11 SECONDS.
FRI
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S SWELL.
PERIOD 11 SECONDS.
FRI NIGHT
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S
SWELL. PERIOD 10 SECONDS.
SAT
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S SWELL.
PERIOD 10 SECONDS.
SAT NIGHT
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S
SWELL. PERIOD 12 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 13 SECONDS.
PMZ117-190945-
EAST PANAMA AND COLOMBIA INCLUDING THE GULF OF PANAMA-
238 PM PDT TUE AUG 18 2026
TONIGHT
W WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 15 SECONDS.
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE NIGHT.
WED
SW TO W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT IN SW SWELL.
PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE DAY.
WED NIGHT
SW TO W WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW
SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS
THROUGH THE NIGHT.
THU
SW TO W WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.
PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH
THE DAY.
THU NIGHT
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND
SW TO W 10 KT ELSEWHERE. SEAS 5 TO 7 FT IN S TO SW SWELL. PERIOD
12 SECONDS.
FRI
W WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL. PERIOD
11 SECONDS.
FRI NIGHT
W WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.
PERIOD 12 SECONDS.
SAT
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND SW
10 KT ELSEWHERE. SEAS 4 TO 6 FT IN S TO SW SWELL. PERIOD
12 SECONDS.
SAT NIGHT
VARIABLE WINDS LESS THAN 5 KT GULF OF PANAMA, AND
SW TO W 10 KT ELSEWHERE. 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
N WINDS 10 KT GULF OF PANAMA, AND VARIABLE LESS
THAN 5 KT ELSEWHERE. SEAS 2 TO 4 FT. PERIOD 15 SECONDS.
PMZ119-190945-
ECUADOR INCLUDING THE GULF OF GUAYAQUIL TO 250 NM OFFSHORE-
238 PM PDT TUE AUG 18 2026
TONIGHT
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 6 TO 8 FT IN S TO
SW SWELL. PERIOD 13 SECONDS.
THU
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW
SWELL. PERIOD 12 SECONDS.
THU NIGHT
S TO SW WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW
SWELL. PERIOD 10 SECONDS.
FRI
S TO SW WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD
11 SECONDS.
FRI NIGHT
S TO SW WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 12 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 4 TO 6 FT IN S SWELL.
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 KT. SEAS 2 TO 4 FT. PERIOD
17 SECONDS.
PMZ121-190945-
ECUADOR BETWEEN 250 AND 500 NM OFFSHORE-
238 PM PDT TUE AUG 18 2026
TONIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW
SWELL. PERIOD 14 SECONDS.
WED
S WINDS 15 KT. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD
13 SECONDS.
WED NIGHT
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S SWELL.
PERIOD 12 SECONDS.
THU
SE TO S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 11 SECONDS.
THU NIGHT
SE TO S WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 10 SECONDS.
FRI
S WINDS 10 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD
10 SECONDS.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL.
PERIOD 10 SECONDS.
SAT
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S SWELL. PERIOD
10 SECONDS.
SAT NIGHT
S WINDS 10 KT. SEAS 4 TO 6 FT IN SE TO S SWELL.
PERIOD 10 SECONDS.
SUN
SE TO S WINDS 10 KT. SEAS 3 TO 5 FT. PERIOD 13 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
16 SECONDS.
PMZ123-190945-
OFFSHORE GALAPAGOS ISLANDS-
238 PM PDT TUE AUG 18 2026
TONIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S SWELL.
PERIOD 11 SECONDS.
WED
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S SWELL.
PERIOD 11 SECONDS.
WED NIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S
SWELL. PERIOD 11 SECONDS.
THU
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S SWELL. PERIOD
11 SECONDS.
THU NIGHT
SE TO S WINDS 10 KT. SEAS 6 TO 8 FT IN S SWELL.
PERIOD 10 SECONDS.
FRI
SE TO S WINDS 10 KT. SEAS 6 TO 8 FT IN SE TO S SWELL.
PERIOD 10 SECONDS.
FRI NIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SE TO
S SWELL. PERIOD 11 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 TO 15 KT. SEAS 5 TO 7 FT IN SE TO
S SWELL. PERIOD 12 SECONDS.
SUN
SE TO S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD
13 SECONDS.
SUN NIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. PERIOD
13 SECONDS.
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