Mazatlan to Banderas Bay Forecast
September 8, 2026, 2:00 pm (UTC: -05:00)
Subject: Mazatlan to Banderas Bay Forecast
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This forecast has not been reviewed. It was generated from an automatic model.
.WARNINGS.
...GALE WARNING...
.POST-TROPICAL CYCLONE MARIE NEAR 25.8N 127.4W 1000 MB AT 1500
UTC SEP 08 MOVING WNW OR 300 DEG AT 8 KT. MAXIMUM SUSTAINED
WINDS 35 KT GUSTS 45 KT. GALE FORCE WINDS WITHIN 80 NM
E SEMICIRCLE...70 NM SW QUADRANT AND 100 NM NW QUADRANT. SEAS 4
M OR GREATER WITHIN 180 NM W SEMICIRCLE...150 NM NE QUADRANT AND
120 NM SE QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE WITHIN 28N123W
TO 30N128W TO 27N133W TO 24N129W TO 25N124W TO 28N123W WINDS 20
TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN 30N123W TO
30N140W TO 24N140W TO 19N127W TO 22N122W TO 30N123W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIE NEAR 26.8N
128.2W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIE NEAR 28.7N
129.4W. WITHIN 30N125W TO 30N132W TO 29N130W TO 27N128W TO
27N126W TO 30N125W SE TO S WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
ELSEWHERE WITHIN 30N125W TO 30N140W TO 24N140W TO 25N136W TO
25N130W TO 27N125W TO 30N125W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN E SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIE NEAR 31.2N
131.1W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.48 HOUR FORECAST...LOW PRESSURE DISSIPATED. WITHIN 30N133W TO
30N139W TO 29N137W TO 29N135W TO 30N133W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN E SWELL.
A WEAK PRESSURE GRADIENT ACROSS THE REGION DUE TO THE PRESENCE OF
TROPICAL STORM MARIE TO THE WEST OF THE BAJA CALIFORNIA PENINSULA
IS SUPPORTING MAINLY GENTLE TO MODERATE NW WINDS OFF BAJA, AND
LIGHT TO GENTLE WINDS ALONG WITH SLIGHT SEAS IN THE GULF OF
CALIFORNIA. CLUSTERS OF SHOWERS AND THUNDERSTORMS ARE ACTIVE OFF
CHIAPAS AND OAXACA, BEYOND 90 NM. OTHERWISE, MODERATE TO FRESH
WINDS ARE PULSING IN TEHUANTEPEC.
MARIE IS NO LONGER CONSIDERED A TROPICAL STORM DUE TO A LACK OF
DEEP CONVECTION, AND IS NOW POST-TROPICAL. MARIE IS CENTERED
NEAR 25.8N 127.4W AT 08/1500 UTC, MOVING WEST- NORTHWEST AT 8 KT.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 1000 MB. DESPITE NO LONGER
BEING A TROPICAL STORM, MAXIMUM SUSTAINED WIND SPEED IS STILL 35
KT WITH GUSTS TO 45 KT. PEAK SEAS ARE NEAR 19 FT. NO SIGNIFICANT
THUNDERSTORM ACTIVITY IS EVIDENT NEAR MARIE, AND THE LOW LEVEL
CENTER REMAINS FULLY EXPOSED DUE TO STRONG SHEAR ALOFT. MARIE IS
EXPECTED TO TURN MORE NORTHWESTWARD AS IT FINDS ITSELF WEDGED
BETWEEN A CUTOFF LOW DESCENDING FROM THE NORTHEAST PACIFIC AND A
HIGH PRESSURE SYSTEM CENTERED OVER THE SOUTHWESTERN US. SWELLS
GENERATED BY MARIE WILL CONTINUE TO AFFECT PORTIONS OF THE COAST
OF THE BAJA CALIFORNIA PENINSULA AND SOUTHERN CALIFORNIA FOR THE
NEXT COUPLE OF DAYS. THESE SWELLS ARE LIKELY TO CAUSE LIFE-
THREATENING SURF AND RIP CURRENT CONDITIONS. PLEASE CONSULT
PRODUCTS FROM YOUR LOCAL WEATHER OFFICE.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - NW 6-8, Seas SW 0-3.7 ft @ 17sec
TONITE - NE 6-8, Seas SSW 0-3.6 ft @ 17sec
WEDNESDAY - N 9-11, Seas SW 0-3.6 ft @ 18sec
WEDNESDAY NIGHT - NE 10-12, Seas SW 0-3.7 ft @ 18sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
THURSDAY - NE 10-12, Seas SW 0-3.7 ft @ 18sec
FRIDAY - WNW 6-8, Seas SSW 0-3.1 ft @ 15sec
SATURDAY - NW 7-9, Seas SW 1-2.7 ft @ 14sec
SUNDAY - WSW 6-7, Seas SSW 1-2.2 ft @ 13sec
MONDAY - SSW 5-6, Seas SSW 1.2-2.4 ft @ 12sec