Mazatlan to Banderas Bay Forecast
October 27, 2026, 8:00 am (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.
...TROPICAL STORM WARNING...
.TROPICAL STORM VANCE NEAR 15.9N 106.9W 1002 MB AT 0900 UTC OCT
27 MOVING NW OR 310 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N
SEMICIRCLE...175 NM SE QUADRANT AND 0 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 120 NM NE AND SW QUADRANTS...135 NM NW QUADRANT
AND 75 NM SE QUADRANT WITH SEAS TO 5.5 M. ELSEWHERE WITHIN 17N103W
TO 19N105W TO 18N109W TO 15N109W TO 14N106W TO 15N104W TO
17N103W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA
WITHIN 17N103W TO 20N108W TO 17N114W TO 13N113W TO 12N108W TO
14N104W TO 17N103W ...INCLUDING NEAR CABO CORRIENTES...WINDS 20
KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM VANCE NEAR 18.6N 108.4W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NE QUADRANT...130 NM SE QUADRANT...0 NM SW
QUADRANT...AND 30 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 75 NM
NE QUADRANT...45 NM SE AND NW QUADRANTS...AND 30 NM NW QUADRANT
WITH SEAS TO 4.5 M. ELSEWHERE WITHIN 20N106W TO 20N108W TO
19N110W TO 17N109W TO 17N108W TO 18N106W TO 20N106W...INCLUDING
NEAR CABO CORRIENTES...WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
REMAINDER OF AREA WITHIN 20N106W TO 21N108W TO 20N111W TO 16N111W
TO 17N106W TO 18N105W TO 20N106W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.5 M IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM VANCE NEAR 21.7N 108.5W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 0 NM W SEMICIRCLE...40 NM NE QUADRANT AND 80 NM SE
QUADRANT. SEAS 4 M OR GREATER WITHIN 45 NM NE SEMICIRCLE...AND
15 NM SW SEMICIRCLE WITH SEAS TO 4.0 M. ELSEWHERE WITHIN 22N106W
TO 22N107W TO 22N108W TO 21N109W TO 21N108W TO 21N107W TO
22N106W...INCLUDING NEAR CABO CORRIENTES...WINDS 20 TO 33 KT.
SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 23N106W TO 23N109W TO
22N111W TO 20N110W TO 21N109W TO 20N106W TO 23N106W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N95W TO 14N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30
TO 35 KT. SEAS 2.5 TO 4.0 M. ELSEWHERE WITHIN 16N94W TO 15N95W
TO 16N96W TO 15N97W TO 13N96W TO 15N94W TO 16N94W N TO NE WINDS
20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.09 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS BELOW GALE FORCE.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W TO
14N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC
...N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST LITTLE CHANGE.
AWAY FROM VANCE AND THE GULF OF TEHUANTEPEC, WINDS ARE MAINLY
MODERATE OR WEAKER, EXCEPT LOCALLY FRESH OFFSHORE BAJA CALIFORNIA
NORTE FROM NEAR PUNTA EUGENIA NORTHWARD. SEAS ARE MODERATE AWAY
FROM THOSE SPECIAL FEATURES AREAS, EXCEPT SLIGHT IN THE NORTHERN
AND CENTRAL GULF OF CALIFORNIA, HIGHER IN THE SE GULF DUE TO
SWELLS ASSOCIATED WITH VANCE.
FOR THE FORECAST, TROPICAL STORM TROPICAL STORM VANCE WILL MOVE
TO 17.0N 107.8W THIS AFTERNOON, 18.6N 108.4W WED MORNING, 20.2N
108.6W WED AFTERNOON, 21.7N 108.5W THU MORNING, WEAKEN TO A
REMNANT LOW NEAR 23.9N 107.9W THU AFTERNOON, AND DISSIPATE FRI
MORNING.. GALE FORCE NORTHERLY WINDS IN THE GULF OF TEHUANTEPEC
WILL DIMINISH TO FRESH TO NEAR GALE FORCE MID-MORNING, PULSING AT
THOSE SPEEDS THROUGH THU NIGHT, THEN PULSING AT MODERATE TO
FRESH THEREAFTER. MODERATE TO LOCALLY FRESH WINDS OFFSHORE BAJA
CALIFORNIA NORTE WILL DIMINISH WED. LOOKING AHEAD, A DEVELOPING
LOW PRESSURE AND FRONTAL SYSTEM MAY IMPACT THE BAJA CALIFORNIA
PENINSULA WATERS LATE IN THE UPCOMING WEEKEND WITH THE POTENTIAL
FOR INCREASING WINDS AND BUILDING SEAS. MODERATE OR WEAKER WINDS
AND MODERATE SEAS WILL PREVAIL OTHERWISE.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - SSW 5-6, Seas S 0-2.4 ft @ 8sec
TONITE - SSW 6-8, Seas S 0-2.9 ft @ 8sec
WEDNESDAY - N 9-11, Seas S 0-4.5 ft @ 9sec
WEDNESDAY NIGHT - SSE 10-12, Seas S 1.1-4.5 ft @ 8sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
THURSDAY - S 22-27, Seas SSW 0-4.4 ft @ 7sec
FRIDAY - SSW 11-14, Seas SSW 3.1-3.2 ft @ 6sec
SATURDAY - NNW 8-10, Seas SSW 1.2-3.1 ft @ 15sec
SUNDAY - NNW 10-12, Seas SSW 1.1-3.7 ft @ 15sec
MONDAY - NNW 8-10, Seas SSW 1.1-3.7 ft @ 15sec