Tehuantepec Forecast

December 20, 2025, 9:03 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
.NONE.

.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 14N95W TO 15N95W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.

THE PRESSURE GRADIENT OVER SOUTHEASTERN MEXICO HAS SLACKENED
DURING THE PAST SEVERAL HOURS ALLOWING FOR GAP NORTHERLY IN THE
GULF OF TEHUANTEPEC REGION TO DIMINISH TO FRESH TO STRONG SPEEDS.
SEAS ARE TO 8 FT (2.5 M) WITH THESE WINDS. ELSEWHERE, A 1022 MB
HIGH CENTER IS ANALYZED NEAR 30N126W. HIGH PRESSURE GENERALLY
COVERS THE AREA NORTH OF 16N AND WEST OF 115W. LATEST
SCATTEROMETER SATELLITE DATA INDICATES MOSTLY GENTLE TO MODERATE
NORTH TO NORTHEAST WINDS ACROSS THE MEXICAN WATERS, WITH THE
EXCEPTION OF MODERATE TO FRESH NORTHWEST TO NORTH WINDS ALONG AND
JUST OFFSHORE CABO CORRIENTES. SLIGHT TO MODERATE SEAS ARE OVER
THESE WATERS.
FOR THE FORECAST, HIGH PRESSURE NORTH OF THE GULF OF TEHUANTEPEC
WILL SUPPORT FRESH TO NEAR GALE-FORCE NORTHERLY WINDS AND
MODERATE TO LOCALLY ROUGH SEAS OVER THE NEXT SEVERAL DAYS. WINDS
MAY OCCASIONALLY PULSE TO GALE-FORCE AT NIGHT FROM MON THROUGH
WED AND POSSIBLY ON THU NIGHT. ELSEWHERE OVER THE MAJORITY OF THE
WATERS, A RELATIVELY WEAK PRESSURE GRADIENT WILL LEAD TO MODERATE
OR WEAKER WINDS AND SEAS INTO THE EARLY PART OF THE UPCOMING WEEK.
LOOKING AHEAD, A COLD FRONT WILL APPROACH THE OFFSHORE WATERS OF
BAJA CALIFORNIA NORTE BY THE MIDDLE PORTION OF THE UPCOMING WEEK
POSSIBLY PRODUCING FRESH TO STRONG SOUTHERLY WINDS AND ROUGH SEAS.

SHORT-TERM TEHUANTEPEC
TODAY - NNW 18-23, Seas SSW 2.7-3.9 ft @ 12sec
TONITE - N 18-23, Seas NW 4.5-5.3 ft @ 6sec
MONDAY - N 19-24, Seas NW 4.6-5.4 ft @ 6sec
MONDAY NIGHT - N 18-23, Seas NNW 5.3-6.1 ft @ 6sec

LONG-TERM TEHUANTEPEC
TUESDAY - NNW 20-25, Seas NNW 5.5-6.2 ft @ 6sec
WEDNESDAY - N 21-26, Seas NNW 8.2-8.6 ft @ 7sec
THURSDAY - N 21-26, Seas N 6.9-7.2 ft @ 6sec
FRIDAY - N 17-21, Seas N/A ?-? ft @ ?
SATURDAY - Not available yet