Tehuantepec Forecast

January 20, 2026, 9:01 pm (UTC: -05:00)
Subject: Tehuantepec Forecast

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This forecast has not been reviewed. It was generated from an automatic model.

.WARNINGS.

...GALE WARNING...
.WITHIN 15.5N94.5W TO 16N94.5W TO 16N95W TO 15.5N95.5W TO
15N95.5W TO 15N95W TO 15.5N94.5W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 30 TO 40 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE
WITHIN 14N94W TO 16N95W TO 15N96W TO 14N97W TO 12N97W TO 13N96W
TO 14N94W N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. REMAINDER
AREA WITHIN 12N93W TO 14N94W TO 11N107W TO 09N108W TO 06N105W TO
05N100W TO 12N93W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
SWELL.
.24 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 16N96W TO 14N97W TO
12N97W TO 12N96W TO 15N95W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 14N94W TO 09N113W TO 05N112W TO 04N103W TO
09N96W TO 14N94W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
SWELL.
.48 HOUR FORECAST WITHIN 15N93W TO 16N95W TO 16N96W TO 13N96W TO
13N95W TO 14N94W TO 15N93W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS 2.5 M.

.WITHIN 15.5N94.5W TO 16N94.5W TO 16N95W TO 15.5N95.5W TO
15N95.5W TO 15N95W TO 15.5N94.5W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 30 TO 40 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE
WITHIN 14N94W TO 16N95W TO 15N96W TO 14N97W TO 12N97W TO 13N96W
TO 14N94W N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. REMAINDER
AREA WITHIN 12N93W TO 14N94W TO 11N107W TO 09N108W TO 06N105W TO
05N100W TO 12N93W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
SWELL.
.24 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 16N96W TO 14N97W TO
12N97W TO 12N96W TO 15N95W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 14N94W TO 09N113W TO 05N112W TO 04N103W TO
09N96W TO 14N94W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
SWELL.
.48 HOUR FORECAST WITHIN 15N93W TO 16N95W TO 16N96W TO 13N96W TO
13N95W TO 14N94W TO 15N93W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS 2.5 M.

GULF OF TEHUANTEPEC GALE WARNING: THE PRESSURE GRADIENT BETWEEN
STRONG HIGH PRESSURE NORTH OF THE AREA AND THE EASTERN NORTH
PACIFIC MONSOON TROUGH IS SUPPORTING GALE- FORCE N GAP WINDS OVER
THE GULF OF TEHUANTEPEC. THIS GALE, ALONG WITH ROUGH SEAS, WILL
LIKELY LAST INTO WED MORNING. MARINE INTERESTS TRANSITING ACROSS
THE GULF OF TEHUANTEPEC INTO THE MIDDLE PART OF THE WEEK SHOULD
BE AWARE OF THESE GALE- FORCE GAP WINDS AND TAKE THE NECESSARY
ACTION TO AVOID HAZARDOUS MARINE CONDITIONS OVER THE AFFECTED
WATERS.
FRESH TO STRONG GAP WINDS, AND SEAS OF 6 TO 9 FT, PREVAIL ACROSS
THE GULF OF PAPAGAYO, EXTENDING SW TO 90W. ROUGH SEAS OF 7 TO 9
FT ARE WELL OFFSHORE GUATEMALA AND EL SALVADOR IN SWELL GENERATED
BY THE GULF OF TEHUANTEPEC GALE FORCE GAP WIND EVENT. ELSEWHERE,
WINDS ARE MODERATE OR WEAKER WITH SEAS IN THE 3 TO 5 FT RANGE.
FOR THE FORECAST, THE PRESSURE GRADIENT BETWEEN HIGH PRESSURE
NORTH OF THE AREA AND THE EASTERN NORTH PACIFIC MONSOON TROUGH
WILL SUPPORT FRESH TO STRONG NE TO E WINDS AND ROUGH SEAS IN THE
PAPAGAYO REGION THROUGH THE WEEKEND. THE PRESSURE GRADIENT WILL
ALSO SUPPORT PULSING OF MODERATE TO FRESH N WINDS OVER THE GULF
OF PANAMA THROUGH THE END OF THE WEEK. ELSEWHERE, WINDS WILL BE
MODERATE OR WEAKER OVER THE FORECAST WATERS THROUGH THE END OF
THE WEEK. NW TO N SWELL GENERATED BY GALES OVER THE GULF OF
TEHUANTEPEC WILL BRING ROUGH SEAS WELL OFFSHORE GUATEMALA AND EL
SALVADOR THROUGH MIDWEEK.

FOR THE FORECAST, THE LARGE NW SWELL WILL GRADUALLY SUBSIDE
THROUGH THE MIDDLE OF THE WEEK. FRESH TO STRONG WINDS FROM THE
GULF OF TEHUANTEPEC AND GULF OF PAPAGAYO GAP WILL SPREAD INTO THE
REGION THROUGH TONIGHT ALONG WITH SEAS OF 8 TO 10 FT. ELSEWHERE,
WINDS SHOULD REMAIN MODERATE OR WEAKER, WITH SEAS LESS THAN 8
FT, FOR THE NEXT SEVERAL DAYS.

SHORT-TERM TEHUANTEPEC
TODAY - NNW 22-28, Seas SW 5.1-5.8 ft @ 16sec
TONITE - NNW 22-27, Seas SW 5.9-6.6 ft @ 15sec
THURSDAY - NNW 22-27, Seas SW 5.9-6.6 ft @ 15sec
THURSDAY NIGHT - NNW 16-20, Seas SW 3.9-4.9 ft @ 14sec

LONG-TERM TEHUANTEPEC
FRIDAY - NNW 16-20, Seas SW 3.9-4.9 ft @ 14sec
SATURDAY - Not available yet
SUNDAY - NNW 18-23, Seas SSW 1.1-3.1 ft @ 14sec
MONDAY - NNW 33-41, Seas N/A ?-? ft @ ?
TUESDAY - Not available yet