Sea of Cortez Southern Crossing Forecast

September 19, 2026, 2:00 am (UTC: -05:00)
Subject: Sea of Cortez Southern Crossing Forecast

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

WARNINGS
.NONE.

THE PRESSURE GRADIENT BETWEEN A RIDGE OVER THE GULF OF AMERICA
AND THE EASTERN EXTENSION OF THE PACIFIC MONSOON IS SUPPORTING
FRESH TO STRONG N GAP WINDS ACROSS THE GULF OF TEHUANTEPEC. SEAS
WITH THESE WINDS ARE 6 TO 8 FT. SCATTERED SHOWERS ARE OVER THE
OFFSHORE WATERS BETWEEN CHIAPAS AND OAXACA DUE TO A BROAD AREA OF
LOW PRESSURE AND THE MONSOON SOUTH OF THE REGION. THE GRADIENT
RELATED TO HIGH PRESSURE WEST OF THE BAJA CALIFORNIA OFFSHORES
AND LOW PRESSURE ALONG WESTERN MEXICO IS SUPPORTING FRESH TO
LOCALLY STRONG NW WINDS N OF CABO SAN LAZARO. MODERATE OR WEAKER
WINDS ARE ELSEWHERE ALONG WITH MODERATE SEAS, EXCEPT FOR SLIGHT
SEAS IN THE GULF OF CALIFORNIA.
FOR THE FORECAST, WINDS WILL PULSE TO FRESH TO STRONG SPEEDS IN
THE GULF OF TEHUANTEPEC TONIGHT BECOMING MODERATE N TO NE WINDS
SAT AFTERNOON. FRESH TO STRONG NW WINDS OFFSHORE BAJA CALIFORNIA
WILL DIMINISH SAT AFTERNOON. NORTHWEST WINDS OVER THESE WATERS
ARE EXPECTED TO BRIEFLY REACH FRESH SPEEDS MON NIGHT INTO TUE.
OTHERWISE, THE ENVIRONMENTAL CONDITIONS OF INVEST EP99, NEAR
08N106W, ARE CONDUCIVE FOR DEVELOPMENT AND A TROPICAL DEPRESSION
IS LIKELY TO FORM LATE THIS WEEKEND OR EARLY NEXT WEEK WHILE IT
MOVES GENERALLY NORTHWARD OFF THE COAST OF SOUTHWESTERN
MEXICO. REGARDLESS OF DEVELOPMENT, THIS SYSTEM IS FORECAST TO
BRING FRESH TO STRONG WINDS AND MODERATE TO ROUGH SEAS TO THE
MICHOACAN AND JALISCO OFFSHORES TUE NIGHT INTO THE MIDDLE PART OF
NEXT WEEK.

SHORT-TERM SOUTHERN CROSSING (along 23N)
TODAY - ESE 8-10, Seas S 0.6-1.5 ft @ 7sec
TONITE - SSW 7-9, Seas S 1.8-2.2 ft @ 7sec
SUNDAY - SSW 7-9, Seas S 1.8-2.2 ft @ 7sec
SUNDAY NIGHT - SW 6-7, Seas S 0-1.5 ft @ 7sec

LONG-TERM SOUTHERN CROSSING
MONDAY - SW 6-7, Seas S 0-1.5 ft @ 7sec
TUESDAY - SE 4-5, Seas S 0-3 ft @ 9sec
WEDNESDAY - E 5-6, Seas S 0-2.8 ft @ 8sec
THURSDAY - W 5-6, Seas S 0-3.6 ft @ 13sec
FRIDAY - WNW 5-6, Seas S 0-8.5 ft @ 13sec