Mazatlan to Banderas Bay Forecast
October 27, 2026, 2:00 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 15.5N 106.3W 999 MB AT 0300 UTC OCT
27 MOVING W OR 275 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM N
SEMICIRCLE...60 NM SE QUADRANT AND 40 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 135 NM NE QUADRANT...90 NM SE QUADRANT...120 NM
SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE
WITHIN 16N104W TO 18N105W TO 17N107W TO 15N108W TO 14N107W TO
14N104W TO 16N104W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
REMAINDER OF AREA WITHIN 18N103W TO 20N106W TO 17N113W TO
13N112W TO 11N109W TO 14N103W TO 18N103W...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 17.2N 107.9W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NW AND SE QUADRANTS...50 NM NE QUADRANT AND 0
NM SW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM NE QUADRANT...
60 NM SE QUADRANT...45 NM SW QUADRANT...AND 75 NM NW QUADRANT
WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 19N105W TO 20N107W TO
19N109W TO 16N109W TO 16N108W TO 17N106W TO 19N105W...INCLUDING
NEAR CABO CORRIENTES...ELSEWHERE WITHIN 16N104W TO 18N105W TO
17N107W TO 15N108W TO 14N107W TO 14N104W TO 16N104W WINDS 20 TO
33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 20N105W TO
21N108W TO 20N111W TO 15N111W TO 15N108W TO 16N105W TO 20N105W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM VANCE NEAR 20.5N 108.3W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW
QUADRANT...AND 40 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN
45 NM OF CENTER...EXCEPT 30 NM SW QUADRANT WITH SEAS TO 4.5 M.
ELSEWHERE WITHIN 22N107W TO 22N108W TO 22N109W TO 20N110W TO
19N109W TO 20N107W TO 22N107W...INCLUDING NEAR CABO
CORRIENTES...ELSEWHERE WITHIN 16N104W TO 18N105W TO 17N107W TO
15N108W TO 14N107W TO 14N104W TO 16N104W WINDS 20 TO 33 KT. SEAS
2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 21N106W TO 22N108W TO
22N110W TO 20N111W TO 19N109W TO 20N106W TO 21N106W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30
TO 35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 15N95W TO 15N96W
TO 14N97W TO 13N97W TO 12N97W TO 13N95W TO 15N95W N TO NE WINDS
20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.15 HOUR FORECAST WITHIN 16N95W TO 15N96W TO 13N96W TO 13N95W TO
14N95W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
15N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC
...N WINDS 20 TO 30 KT. SEAS TO 2.5 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. 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 VANCE WILL MOVE TO 15.9N 107.1W
TUE MORNING, 17.2N 107.9W TUE EVENING, 18.8N 108.3W WED MORNING,
20.5N 108.3W WED EVENING, 22.0N 108.1W THU MORNING, AND WEAKEN
TO A REMNANT LOW NEAR 23.5N 107.6W THU EVENING. VANCE WILL
DISSIPATE LATE FRI. GALE FORCE NORTHERLY WINDS IN THE GULF OF
TEHUANTEPEC WILL DIMINISH TO FRESH TO NEAR GALE FORCE TUE 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 0-3.7 ft @ 15sec
MONDAY - NNW 8-10, Seas SSW 0-3.6 ft @ 15sec