Mazatlan to Banderas Bay Forecast
September 12, 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.
...HURRICANE WARNING...
.TROPICAL STORM NORBERT NEAR 17.2N 126.6W 996 MB AT 0300 UTC SEP
12 MOVING WNW OR 285 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE
QUADRANT...40 NM SE QUADRANT...30 NM SW QUADRANT...AND 50 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 150 NM N SEMICIRCLE...60 NM
SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 7.0 M. ELSEWHERE WITHIN
19N124W TO 21N126W TO 20N128W TO 17N129W TO 16N127W TO 17N124W
TO 19N124W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF
AREA WITHIN 21N123W TO 22N126W TO 20N129W TO 18N130W TO 14N126W TO
18N121W TO 21N123W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SWELL.
.24 HOUR FORECAST HURRICANE NORBERT NEAR 17.8N 129.8W. MAXIMUM SUSTAINED
WINDS 65 KT GUSTS 80 KT. LITTLE CHANGE. TROPICAL STORM FORCE
WINDS AND SEAS 4 M OR GREATER. ELSEWHERE WITHIN 22N127W TO 22N131W
TO 20N132W TO 17N131W TO 17N129W TO 19N127W TO 22N127W WINDS 20
TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN 19N126W TO
23N128W TO 23N132W TO 20N135W TO 14N133W TO 13N131W TO 19N126W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE NORBERT NEAR 18.5N 133.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 40 NM OF CENTER EXCEPT 70 NM NE QUADRANT. SEAS 4 M OR
GREATER WITHIN 180 NM NE AND 90 NM SW SEMICIRCLES WITH SEAS TO
8.0 M. ELSEWHERE WITHIN 23N131W TO 23N135W TO 18N136W TO 17N133W
TO 20N130W TO 23N131W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M.
REMAINDER OF AREA WITHIN 23N130W TO 25N134W TO 23N138W TO 18N138W
TO 16N134W TO 18N130W TO 23N130W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN MIXED SWELL.
...GALE WARNING...
.LOW PRESSURE NEAR 14N114W 1008 MB. WITHIN 15N110W TO 16N111W TO
16N113W TO 15N113W TO 14N111W TO 14N110W TO 15N110W SE WINDS 20
TO 25 KT. SEAS 2.5 TO 3.0 M IN E TO SE SWELL.
.24 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
16N114W 1007 MB. WITHIN 16N112W TO 17N114W TO 16N115W TO 15N114W
TO 14N114W TO 14N113W TO 16N112W S WINDS 20 TO 30 KT. SEAS LESS
THAN 2.5 M.
.48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
115N115W 1005 MB. WITHIN 16N114W TO 17N115W TO 16N116W TO
15N116W TO 15N114W TO 16N114W E TO SE WINDS 30 TO 40 KT. SEAS
2.5 TO 3.0 M. ELSEWHERE WITHIN 16N113W TO 17N115W TO 17N117W TO
15N117W TO 13N115W TO 14N113W TO 16N113W SE TO S WINDS 20 TO 30
KT. SEAS LESS THAN 2.5 M.
FRESH TO STRONG WINDS AND BUILDING SEAS ARE LIKELY WITHIN 120 NM
TO THE NORTHEAST OF THE 1008 MB LOW PRESSURE AREA NEAR 14N114W,
REACHING THE OUTER OFFSHORE WATERS SOUTH OF THE REVILLAGIGEDO
ISLANDS. FARTHER NORTH, 1000 MB LOW PRESSURE IS ANALYZED OVER THE
COLORADO RIVER VALLEY BETWEEN CALIFORNIA AND ARIZONA. THIS
PATTERN IS SUPPORTING MODERATE TO POSSIBLY LOCALLY FRESH SE WINDS
ACROSS THE NORTHERN GULF OF CALIFORNIA. GENTLE TO MODERATE WINDS
AND 3-5 FT SEAS ARE NOTED ELSEWHERE.
FOR THE FORECAST, A RIDGE WILL BUILD ACROSS THE OFFSHORE WATERS
OF BAJA CALIFORNIA, BRINGING MODERATE TO LOCALLY FRESH NW TO N
WINDS SUN INTO EARLY NEXT WEEK. EXPECT FRESH WINDS ACROSS THE
NORTHERN GULF OF CALIFORNIA EARLY NEXT WEEK LIKELY DUE TO THE
PRESSURE GRADIENT BETWEEN THE RIDGE AND THE MEANDERING TROUGH
THAT IS IN PLACE IN THAT AREA. FRESH TO STRONG N TO NE GAP WINDS
WILL PULSE AGAIN IN THE TEHUANTEPEC REGION EARLY NEXT WEEK.
MEANWHILE, SHOWERS AND THUNDERSTORMS ARE BECOMING BETTER
ORGANIZED IN ASSOCIATION WITH A BROAD AREA OF LOW PRESSURE (EP97)
LOCATED SEVERAL MILES SOUTHWEST OF THE SOUTHWESTERN COAST OF
MEXICO. GRADUAL DEVELOPMENT OF THIS SYSTEM IS LIKELY, AND A
TROPICAL DEPRESSION IS EXPECTED TO FORM LATE THIS WEEKEND OR
EARLY NEXT WEEK WHILE IT MOVES GENERALLY WEST- NORTHWESTWARD TO
WESTWARD OVER THE CENTRAL AND WESTERN PORTIONS OF THE EAST
PACIFIC. REGARDLESS OF TROPICAL DEVELOPMENT, INTERESTS SOUTH OF THE
CLARION ISLAND MAY SEE FRESH TO STRONG SE WINDS AND ROUGH SEAS BY
LATE SUN AS THE LOW PRESSURE MOVES W-NW TO THE SOUTH OF THE
ISLAND.
AWAY FROM THE IMPACTS OF T.S. NORBERT, MODERATE TO LOCALLY FRESH
SE WINDS AND ROUGH SEAS ARE FOUND SOUTH OF 04N AND WEST OF THE
GALAPAGOS ISLANDS TO ABOUT 130W. 1020 MB HIGH PRESSURE LOCATED
32N132W DOMINATES WATERS NORTH OF 20N. UNDER THE INFLUENCE OF
THIS SYSTEM, AND AWAY FROM NORBERT, MAINLY MODERATE WINDS AND
MODERATE SEAS PREVAIL, WITH THE EXCEPTION OF LIGHT TO GENTLE
WINDS NORTH OF 20N AND EAST OF 115W TO BAJA CALIFORNIA
PENINSULA.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - NW 9-11, Seas SW 1.4-2.8 ft @ 14sec
TONITE - N 6-8, Seas SW 0-2.7 ft @ 14sec
SUNDAY - N 6-8, Seas SW 0-2.7 ft @ 14sec
SUNDAY NIGHT - ENE 14-17, Seas SW 0.8-2.9 ft @ 19sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
MONDAY - ENE 14-17, Seas SW 0.8-2.9 ft @ 19sec
TUESDAY - W 6-8, Seas SSW 0-3.7 ft @ 17sec
WEDNESDAY - NNW 10-12, Seas SSW 1.9-4.2 ft @ 15sec
THURSDAY - NW 11-14, Seas SSW 1.6-3.1 ft @ 14sec
FRIDAY - WNW 9-11, Seas SSW 1.2-2.8 ft @ 13sec