Mazatlan to Banderas Bay Forecast
October 18, 2026, 8:00 pm (UTC: -05:00)
Subject: Mazatlan to Banderas Bay Forecast
Questions/Comments visit https://svsarana.com
This forecast has not been reviewed. It was generated from an automatic model.
.WARNINGS.
...HURRICANE WARNING...
.HURRICANE TRUDY NEAR 19.5N 107.0W 974 MB AT 2100 UTC OCT 18
MOVING NW OR 325 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 85 KT GUSTS
105 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM OF CENTER EXCEPT
70 NM SW QUADRANT. SEAS 4 M OR GREATER WITHIN 120 NM S
SEMICIRCLE...90 NM NE QUADRANT AND 150 NM NW QUADRANT WITH SEAS
TO 9.5 M. ELSEWHERE...WITHIN 21N106W TO 21N108W TO 19N108W TO
18N108W TO 18N106W TO 19N105W TO 21N106W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 TO 33 KT. SEAS 3.5 TO 4.0 M. REMAINDER OF
AREA...WITHIN 19N104W TO 21N106W TO 23N112W TO 18N114W TO 15N113W
TO 15N106W TO 19N104W...INCLUDING WITHIN 60 NM OF SHORE...WINDS
20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE TRUDY NEAR 20.1N 108.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM NW AND SE QUADRANTS...70 NM NE QUADRANT AND 50 NM SW
QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM OF CENTER EXCEPT 120
NM NW QUADRANT WITH SEAS TO 7.5 M. ELSEWHERE...WITHIN 21N107W TO
21N108W TO 20N109W TO 19N107W TO 20N107W TO 21N107W...INCLUDING
NEAR CABO CORRIENTES...WINDS 20 TO 33 KT. SEAS 3.5 TO 4.0 M.
REMAINDER OF AREA...WITHIN 21N106W TO 24N109W TO 23N113W TO
20N113W TO 17N108W TO 19N106W TO 21N106W...INCLUDING THE GULF OF
CALIFORNIA AND WITHIN 60 NM OF SHORE...WINDS 20 KT OR LESS. SEAS
2.5 TO 3.5 M IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM TRUDY NEAR 20.3N 108.7W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM OF CENTER EXCEPT 30 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 60 NM OF CENTER EXCEPT 90 NM NW QUADRANT WITH
SEAS TO 5.5 M. ELSEWHERE...WITHIN 21N108W TO 21N109W TO 20N109W
TO 20N108W TO 21N108W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M.
REMAINDER OF AREA...WITHIN 22N108W TO 22N109W TO 21N109W TO
22N111W TO 20N111W TO 19N108W TO 22N108W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED
SWELL.
.48 HOUR FORECAST TROPICAL STORM TRUDY NEAR 20.7N 109.3W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS AND SEAS 4 M OR GREATER WITHIN 40 NM OF CENTER EXCEPT 0 NM
SW QUADRANT WITH SEAS TO 4.5 M. ELSEWHERE...WITHIN 21N109W TO
22N109W TO 21N110W TO 20N110W TO 20N109W TO 21N108W TO 21N109W
WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 15N95W TO 13N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 30 TO 45 KT.
SEAS 3.5 TO 4.5 M. ELSEWHERE...WITHIN 14N93W TO 16N94W TO 16N95W
TO 13N97W TO 08N98W TO 11N93W TO 14N93W N TO NE WINDS 20 TO 30
KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA...WITHIN 13N91W TO
16N95W TO 13N98W TO 08N100W TO 07N98W TO 09N93W TO 13N91W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N TO NE SWELL.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N96W TO 15N95W TO
15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS
30 TO 40 KT. SEAS 3.5 TO 4.5 M. ELSEWHERE...WITHIN 15N94W TO
16N94W TO 16N95W TO 12N97W TO 13N95W TO 15N94W N TO NE WINDS 20
TO 30 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA...WITHIN 13N92W TO
16N95W TO 09N101W TO 05N101W TO 04N96W TO 13N92W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 14N96W TO 13N97W TO
13N96W TO 15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE
WINDS 25 TO 35 KT. SEAS 3.5 TO 4.5 M. ELSEWHERE...WITHIN 13N94W
TO 16N95W TO 12N100W TO 09N101W TO 09N98W TO 13N94W NE WINDS 20
TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST HURRICANE TRUDY NEAR 20.1N 108.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM NW AND SE QUADRANTS...70 NM NE QUADRANT AND 50 NM SW
QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM OF CENTER EXCEPT 120
NM NW QUADRANT WITH SEAS TO 7.5 M. ELSEWHERE...WITHIN 21N107W TO
21N108W TO 20N109W TO 19N107W TO 20N107W TO 21N107W...INCLUDING
NEAR CABO CORRIENTES...WINDS 20 TO 33 KT. SEAS 3.5 TO 4.0 M.
REMAINDER OF AREA...WITHIN 21N106W TO 24N109W TO 23N113W TO
20N113W TO 17N108W TO 19N106W TO 21N106W...INCLUDING THE GULF OF
CALIFORNIA AND WITHIN 60 NM OF SHORE...WINDS 20 KT OR LESS. SEAS
2.5 TO 3.5 M IN MIXED SWELL.
ELSEWHERE, THE PRESSURE GRADIENT BETWEEN HIGH PRESSURE NORTH
AMERICA AND THE LOWER PRESSURE CLOSER TO TRUDY IS LEADING TO
MODERATE NW WINDS IN THE GULF OF CALIFORNIA. WINDS FOR THE
REMAINING WATERS ARE LIGHT TO GENTLE. SEAS AWAY FROM THE TRUDY
AND THE GULF OF TEHUANTEPEC ARE MODERATE, EXCEPT SLIGHT IN THE
NORTHERN GULF OF CALIFORNIA.
HURRICANE TRUDY IS CENTERED NEAR 19.5N 107.0W AT 18/2100 UTC,
MOVING NORTHWEST AT 5 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS
974 MB. MAXIMUM SUSTAINED WIND SPEED IS 85 KT WITH GUSTS TO 105
KT. PEAK SEAS ARE NEAR 32 FT (9.5 M). NUMEROUS MODERATE TO
ISOLATED STRONG CONVECTION IS OBSERVED WITHIN ABOUT 120 NM OF THE
CENTER. A GENERAL NORTHWESTWARD MOTION IS EXPECTED TODAY,
FOLLOWED BY A TURN TOWARD THE WEST- NORTHWEST TONIGHT. ON THE
FORECAST TRACK, THE CENTER OF TRUDY WILL MOVE AWAY FROM THE COAST
OF MAINLAND MEXICO THIS EVENING, THEN MOVE SOUTH OF BAJA
CALIFORNIA SUR MON AND TUE. TRUDY IS A CATEGORY TWO HURRICANE ON
THE SAFFIR-SIMPSON HURRICANE WIND SPEED SCALE, BUT RAPID
WEAKENING IS EXPECTED TO BEGIN TONIGHT, AND TRUDY COULD
DEGENERATE INTO A POST-TROPICAL LOW AS EARLY AS LATE TUE. SWELLS
GENERATED BY TRUDY ARE AFFECTING PORTIONS OF THE COAST OF
SOUTHWESTERN AND WEST-CENTRAL MEXICO. THESE SWELLS WILL CAUSE
LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS. PLEASE CONSULT
PRODUCTS FROM YOUR LOCAL WEATHER OFFICE.
FOR THE FORECAST, HURRICANE TRUDY IS NEAR 19.5N 107.0W AT 2 PM
PDT, AND IS MOVING NORTHWEST AT 5 KT. MAXIMUM SUSTAINED WINDS ARE
85 KT WITH GUSTS TO 105 KT, AND THE MINIMUM CENTRAL PRESSURE IS
974 MB. TRUDY WILL MOVE TO 19.9N 107.4W MON MORNING, 20.1N 108.0W
MON AFTERNOON, THEN WEAKEN TO A TROPICAL STORM NEAR 20.3N 108.7W
TUE MORNING. TROPICAL STORM TRUDY WILL BE AT 20.7N 109.3W TUE
AFTERNOON, WEAKEN TO A REMNANT LOW NEAR 21.4N 109.7W WED MORNING,
AND REACH JUST SOUTH OF BAJA CALIFORNIA SUR WED AFTERNOON. TRUDY
WILL DISSIPATE THU AFTERNOON. HIGH PRESSURE CONTINUING TO SETTLE
SOUTHWARD INTO MEXICO WILL FORCE GALE FORCE GAP WINDS INTO THE
GULF OF TEHUANTEPEC INTO TUE NIGHT, WITH RESULTING VERY ROUGH
SEAS. WINDS TO NEAR STORM-FORCE ARE LIKELY AT TIMES INTO MON,
WITH SEAS PEAKING NEAR 16 FT. STRONG TO NEAR GALE-FORCE WINDS AND
ROUGH SEAS WILL THEN PERSIST THROUGH THE REMAINDER OF THE WEEK.
LOOKING AHEAD, AN AREA OF LOW PRESSURE IS FORECAST TO FORM WELL
OFFSHORE OF SOUTHERN MEXICO DURING THE NEXT DAY OR TWO.
ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR GRADUAL DEVELOPMENT
THEREAFTER, AND A TROPICAL DEPRESSION IS EXPECTED TO FORM AROUND
THE MIDDLE OF THIS WEEK WHILE IT MOVES WESTWARD TO WEST-
NORTHWESTWARD, WELL SOUTH OF MEXICO. THERE IS A HIGH CHANCE OF
TROPICAL FORMATION OF THIS LOW OVER THE NEXT 7 DAYS.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - NW 6-7, Seas S 0-8.3 ft @ 11sec
TONITE - SW 2-3, Seas SSW 0-7.5 ft @ 16sec
MONDAY - N 10-13, Seas SSW 0-4.9 ft @ 15sec
MONDAY NIGHT - NNE 2-3, Seas SSW 0-4.8 ft @ 14sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
TUESDAY - W 6-7, Seas SSW 0-4.4 ft @ 15sec
WEDNESDAY - WNW 10-13, Seas SSW 0-4.6 ft @ 18sec
THURSDAY - WNW 8-10, Seas SSW 0-4.3 ft @ 16sec
FRIDAY - NW 7-9, Seas SSW 0-3.8 ft @ 15sec
SATURDAY - SW 6-8, Seas SSW 0-3.2 ft @ 14sec