Sea of Cortez Southern Crossing Forecast

September 19, 2026, 8:00 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 EASTERN MEXICO AND
THE EASTERN EXTENSION OF THE PACIFIC MONSOON IS SUPPORTING FRESH
N GAP WINDS ACROSS THE GULF OF TEHUANTEPEC. SEAS WITH THESE WINDS
ARE 5 TO 6 FT. SCATTERED SHOWERS ARE OVER THE OFFSHORE WATERS
BETWEEN OAXACA AND GUERRERO DUE TO INVEST EP99 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 BECOMING MODERATE N TO NE WINDS THIS
AFTERNOON. FRESH TO STRONG NW WINDS OFFSHORE BAJA CALIFORNIA WILL
DIMINISH THIS AFTERNOON. NORTHWEST WINDS OVER THESE WATERS ARE
EXPECTED TO BRIEFLY REACH FRESH SPEEDS AGAIN MON NIGHT INTO TUE.
OTHERWISE, THE ENVIRONMENTAL CONDITIONS OF INVEST EP99, NEAR
09N106W, ARE CONDUCIVE FOR DEVELOPMENT AND A TROPICAL DEPRESSION
IS EXPECTED 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 NEAR GALE-FORCE WINDS AND MODERATE TO ROUGH SEAS
TO THE MICHOACAN AND JALISCO OFFSHORES TONIGHT INTO WED NIGHT.

SHORT-TERM SOUTHERN CROSSING (along 23N)
TODAY - SE 7-9, Seas S 1-1.8 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 0-7.2 ft @ 13sec