Mazatlan to Banderas Bay Forecast
October 21, 2026, 8:00 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.
...HURRICANE WARNING...
.TROPICAL STORM VANCE NEAR 9.4N 99.8W 1003 MB AT 2100 UTC OCT 21
MOVING W OR 265 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS
45 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N SEMICIRCLE AND
0 NM S SEMICIRCLE. SEAS 4 M OR GREATER WITHIN 30 NM OF CENTER
EXCEPT 0 NM SE QUADRANT WITH SEAS TO 4.5 M. ELSEWHERE WITHIN
11N99W TO 11N101W TO 10N102W TO 08N101W TO 08N99W TO 10N98W TO
11N99W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. REMAINDER AREA
WITHIN 11N96W TO 13N100W TO 10N103W TO 07N102W TO 07N100W TO
08N97W TO 11N96W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED
SWELL.
.24 HOUR FORECAST TROPICAL STORM VANCE NEAR 9.8N 101.3W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS
WITHIN 100 NM NE QUADRANT...70 NM SE QUADRANT...50 NM SW
QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90
NM OF CENTER WITH SEAS TO 6.5 M. ELSEWHERE WITHIN 11N99W TO
13N102W TO 11N104W TO 09N104W TO 08N102W TO 08N100W TO 11N99W
WINDS 20 TO 33 KT. SEAS DESCRIBED ABOVE. REMAINDER AREA WITHIN
11N97W TO 14N103W TO 09N106W TO 05N104W TO 04N100W TO 07N96W TO
11N97W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN MIXED SWELL.
.36 HOUR FORECAST HURRICANE VANCE NEAR 10.4N 102.1W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT.
.48 HOUR FORECAST HURRICANE VANCE NEAR 11.2N 102.7W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS
WITHIN 150 NM NE QUADRANT...120 NM SE QUADRANT...80 NM SW
QUADRANT...AND 130 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN
210 NM OF CENTER...EXCEPT 240 NM NW QUADRANT WITH SEAS TO 10.0 M.
ELSEWHERE WITHIN 11N97W TO 17N101W TO 17N106W TO 12N110W TO
07N108W TO 05N100W TO 11N97W WINDS 20 TO 33 KT. SEAS DESCRIBED
ABOVE. REMAINDER AREA WITHIN 14N99W TO 15N102W TO 14N106W TO
11N106W TO 08N103W TO 09N100W TO 14N99W WINDS 20 KT OR LESS. SEAS
2.5 TO 4.0 M IN MIXED SWELL.
...GALE WARNING...
.WITHIN 15N95W TO 16N95W TO 16N96W TO 14N97W TO 13N96W TO 14N95W
TO 15N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE WINDS
20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 14N94W TO
16N94W TO 16N95W TO 14N98W TO 13N97W TO 12N95W TO 14N94W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.06 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS TO GALE FORCE.
.18 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS BELOW GALE FORCE.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS TO GALE FORCE.
.42 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS BELOW GALE FORCE.
.48 HOUR FORECAST LITTLE CHANGE.
ASIDE FROM THE GULF OF TEHUANTEPEC AND TS VANCE, LIGHT TO GENTLE
BREEZES AND MODERATE SEAS PREVAIL, EXCEPT FOR SLIGHT SEAS IN THE
GULF OF CALIFORNIA.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - NW 7-9, Seas NW 0.6-0.6 ft @ 2sec
TONITE - NNW 4-5, Seas NW 0-0.5 ft @ 2sec
THURSDAY - NW 6-8, Seas NW 1-1 ft @ 2sec
THURSDAY NIGHT - WNW 6-8, Seas WNW 0-0.9 ft @ 3sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
FRIDAY - WNW 6-8, Seas WNW 0-0.9 ft @ 3sec
SATURDAY - W 4-5, Seas SSE 0-1.2 ft @ 13sec
SUNDAY - WNW 6-7, Seas SSE 0-2.1 ft @ 12sec
MONDAY - NW 5-6, Seas SSE 0-2.1 ft @ 12sec
TUESDAY - NNE 6-8, Seas S 0-4.3 ft @ 14sec