Gap Winds Forecast
April 21, 2026, 9:01 pm (UTC: -04:00)
Subject: Gap Winds Forecast
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This forecast has not been reviewed. It was generated from an automatic model.
WARNINGS
.NONE.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A TROUGH EXTENDS FROM NEAR 10N75W TO 02N83W TO 05N90W TO
05.5N105W. ITCZ STRETCHES FROM 05.5N106W TO 02N122W TO 05N134W
TO BEYOND 05N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION
S OF 06N BETWEEN 85W AND 100W...S OF 01S BETWEEN 96W AND 105W...
S OF 08N BETWEEN 103W AND 130W...AND FROM 06N TO 09N BETWEEN
137W AND 140W.
A TROUGH AXIS EXTENDS FROM NEAR 10N75W TO 02N83W TO 05N90W TO
05.5N105W. THE ITCZ STRETCHES FROM 05.5N106W TO 02N122W TO
05N134W TO BEYOND 05N140W. SCATTERED MODERATE ISOLATED STRONG
CONVECTION IS OBSERVED S OF 06N BETWEEN 85W AND 100W, SOUTH OF
01S BETWEEN 96W AND 105W, SOUTH OF 08N BETWEEN 103W AND 130W, AND
FROM 06N TO 09N BETWEEN 137W AND 140W.
A WEAKENING COLD FRONT CONTINUES TO SLIDE SOUTHEASTWARD ACROSS
THE NORTHERN WATERS, EXTENDING FROM 30N120W TO 24N130W, THEN
BECOMES STATIONARY AND STRETCHES TO 21N140W. NO SIGNIFICANT
CONVECTION IS SEEN NEAR THIS BOUNDARY. LARGE NW TO N SWELL
FOLLOWS THE FRONT, SUPPORTING SEAS OF 8-12 FT WITH THE HIGHEST
SEAS NEAR 28N135W. HIGH PRESSURE WELL NW OF THE FRONT EXTENDS
WEAKLY INTO THE AREA AND IS PRODUCING LIGHT TO GENTLE ANTICYCLONIC
WINDS BEHIND THE FRONT TO 30N. WEAK HIGH PRESSURE SE OF THE
FRONT DOMINATES THE REMAINDER OF THE BASIN, SUPPORTING MODERATE
TO LOCALLY FRESH EASTERLY TRADE WINDS BETWEEN 108W AND 120W, AND
S OF 21N TO THE ITCZ WEST OF 120W. MODERATE SEAS TO 7 FT IN S
SWELL, PREVAIL BETWEEN THE FRONT AND THE ITCZ. ELSEWHERE,
MODERATE OR LIGHTER WINDS AND MODERATE SEAS ARE PREVALENT.
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MIDDAY SATELLITE SCATTEROMETER DATA SHOWED FRESH TO STRONG
NORTHERLY GAP WINDS TO 30 KT ACROSS THE GULF OF TEHUANTEPEC, AND
EXTENDING SOUTHWARD TO 13.5N. SEAS IN THESE WATERS ARE ESTIMATED
AT 6-9 FT, WITH RECENT ALTIMETER DATA SHOWING SEAS TO 8 FT
EXTENDING SOUTHWARD TO NEAR 09N.
FOR THE FORECAST, ATLANTIC HIGH PRESSURE EXTENDING ACROSS THE
GULF OF AMERICA WILL BEGIN TO WEAKEN TONIGHT THROUGH WED AS THE
HIGH SHIFTS NORTHEASTWARD. THIS WILL LEAD TO A SIGNIFICANT
DECREASE IN GAP WINDS ACROSS THE GULF OF TEHUANTEPEC TONIGHT
THROUGH WED MORNING, THEN A SHIFT TO S TO SW WINDS THERE THROUGH
THE REMAINDER OF THE WEEK. ELSEWHERE, A WEAK COLD FRONT
EXTENDING FROM SOUTHERN CALIFORNIA THROUGH 30N120W AND BEYOND
WILL MOVE SOUTHEASTWARD AND INTO THE BAJA NORTE WATERS THIS
EVENING THROUGH TONIGHT THEN DISSIPATE WED MORNING. NEW HIGH
PRESSURE BEHIND THIS FRONT WILL BEGIN TO BUILD ACROSS THE BAJA
WATERS WED, AND ACT TO INCREASE WINDS MODESTLY THROUGH EARLY FRI
BEFORE WEAKENING INTO FRI NIGHT. NEW NW SWELL GENERATED BEHIND
THE FRONT WILL MOVE INTO THE BAJA CALIFORNIA NORTE WATERS TONIGHT
AND SPREAD SOUTHEASTWARD TO THE REVILLAGIGEDO ISLANDS THROUGH
WED NIGHT. SEAS ARE EXPECTED TO PEAK TO AROUND 8 FT ACROSS NORTH
AND CENTRAL PORTIONS OF THE BAJA WATERS WITH THIS SWELL.
ELSEWHERE, MOSTLY LIGHT TO GENTLE WEST TO NORTHWEST WINDS ARE
EXPECTED THROUGH THE END OF THE WEEK AND INTO THE UPCOMING
WEEKEND.
MODEST HIGH PRESSURE NORTH OF THE WESTERN CARIBBEAN SEA IS
FORCING FRESH NE TO E GAP WINDS AND MODERATE SEAS ACROSS THE
PAPAGAYO REGION THIS AFTERNOON, EXTENDING DOWNSTREAM TO 89W. SEAS
THERE ARE 4 TO 7 FT. FARTHER EAST, GENTLE N TO NE WINDS
OCCURRING IN THE GULF OF PANAMA ACCELERATE TO MODERATE WINDS
AROUND AND TO THE SOUTH OF THE AZUERO PENINSULA. SEAS IN THESE
WATERS ARE 4 TO 6 FT IN SW SWELL. ELSEWHERE, LIGHT TO GENTLE
VARIABLE WINDS PREVAIL. CROSS-EQUATORIAL SW SWELL MOVING INTO
THE AREA WATERS IS PRODUCING SEAS OF 5 TO 8 FT, HIGHEST BETWEEN
ECUADOR AND THE GALAPAGOS ISLANDS.
MODEST HIGH PRESSURE NORTH OF THE WESTERN CARIBBEAN SEA IS
FORCING FRESH NE TO E GAP WINDS AND MODERATE SEAS ACROSS THE
PAPAGAYO REGION THIS AFTERNOON, EXTENDING DOWNSTREAM TO 89W. SEAS
THERE ARE 4 TO 7 FT. FARTHER EAST, GENTLE N TO NE WINDS
OCCURRING IN THE GULF OF PANAMA ACCELERATE TO MODERATE WINDS
AROUND AND TO THE SOUTH OF THE AZUERO PENINSULA. SEAS IN THESE
WATERS ARE 4 TO 6 FT IN SW SWELL. ELSEWHERE, LIGHT TO GENTLE
VARIABLE WINDS PREVAIL. CROSS-EQUATORIAL SW SWELL MOVING INTO
THE AREA WATERS IS PRODUCING SEAS OF 5 TO 8 FT, HIGHEST BETWEEN
ECUADOR AND THE GALAPAGOS ISLANDS.
FOR THE FORECAST, GAPS WINDS WILL PULSE FRESH TO LOCALLY STRONG
SPEEDS ACROSS THE PAPAGAYO REGION TONIGHT INTO WED MORNING, THEN
BECOME VARIABLE THROUGH THE REMAINDER OF THE WEEK. SIMILARLY,
WINDS WILL PULSE TO LOCALLY FRESH IN THE GULF OF PANAMA TONIGHT
INTO WED MORNING BEFORE ALSO WEAKENING THE REST OF THE WEEK.
OTHERWISE, RATHER TRANQUIL CONDITIONS ARE EXPECTED TO CONTINUE
OVER THE CENTRAL AMERICAN AND THE EQUATORIAL WATERS THROUGH THE
END OF THE WEEK. SW SWELL WILL PEAK ACROSS THE AREA WATERS TODAY
THEN SUBSIDE TONIGHT THROUGH WED, WITH THE NEXT SIGNIFICANT SW
SWELL EXPECTED TO MOVE INTO THE AREA WATERS OVER THE UPCOMING
WEEKEND.
SHORT-TERM GAP WINDS (Near 11N 86W)
TODAY - ENE 17-21, Seas SSW 1.7-3.9 ft @ 15sec
TONITE - ESE 10-12, Seas SSW 2-4.1 ft @ 16sec
THURSDAY - SSW 10-13, Seas SSW 1.1-3.2 ft @ 14sec
THURSDAY NIGHT - ESE 10-12, Seas SSW 2-4.1 ft @ 16sec
LONG-TERM GAP WINDS (Near 11N 86W)
FRIDAY - WSW 7-9, Seas SSW 1.2-3 ft @ 13sec
SATURDAY - W 7-9, Seas SSW 1.5-3.1 ft @ 12sec
SUNDAY - W 4-5, Seas N/A ?-? ft @ ?
MONDAY - NNE 6-8, Seas N/A ?-? ft @ ?
TUESDAY - Not available yet