Mazatlan to Banderas Bay Forecast

August 28, 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.

...HURRICANE WARNING...
.TROPICAL STORM KARINA NEAR 12.7N 114.3W 999 MB AT 0900 UTC AUG
28 MOVING NW OR 310 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM E
SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS 4 M OR GREATER WITHIN
210 NM E SEMICIRCLE AND 150 NM W SEMICIRCLE WITH SEAS TO 6 M.
ELSEWHERE WITHIN 16N108W TO 17N112W TO 16N116W TO 07N116W TO 07N112W TO
12N108W TO 16N108W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M.
REMAINDER OF AREA WITHIN 10N105W TO 15N107W TO 09N109W TO 06N115W TO 03N107W TO
05N105W TO 10N105W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SWELL.
.24 HOUR FORECAST HURRICANE KARINA NEAR 15.1N 116.9W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 190 NM E SEMICIRCLE...50 NM SW QUADRANT AND 100 NM NW
QUADRANT. SEAS 4 M OR GREATER 180 NM NW AND 270 NM SE
SEMICIRCLES WITH SEAS TO 8 M. ELSEWHERE WITHIN 16N109W TO
21N116W TO 20N120W TO 10N122W TO 06N114W TO 10N109W TO 16N109W
WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M.
.48 HOUR FORECAST HURRICANE KARINA NEAR 17.5N 120.7W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM NE QUADRANT...160 NM SE QUADRANT...60 NM SW
QUADRANT...AND 100 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 240
NM NW AND 270 NM SE SEMICIRCLES WITH SEAS TO 9.5 M. ELSEWHERE
WITHIN 23N117W TO 22N125W TO 18N126W TO 11N122W TO 14N116W TO
17N114W TO 23N117W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M.
REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED
SWELL.

...TROPICAL STORM WARNING...
.TROPICAL STORM LOWELL NEAR 11.7N 133.0W 1003 MB AT 0900 UTC AUG
28 MOVING ENE OR 065 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM NE
QUADRANT...70 NM SE QUADRANT...60 NM SW QUADRANT...AND 50 NM NW
QUADRANT. ELSEWHERE .WITHIN 12N130W TO 14N134W TO 11N136W TO 08N140W TO 07N131W TO
10N129W TO 12N130W WINDS 20 TO 33 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 12.3N 133.6W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM S SEMICIRCLE...30 NM NE QUADRANT AND 50 NM NW
QUADRANT. ELSEWHERE WITHIN 15N133W TO 15N136W TO 10N136W TO
07N140W TO 06N136W TO 09N130W TO 15N133W SW TO W WINDS 35 TO 45
KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST TROPICAL STORM LOWELL NEAR 12.7N 136.4W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE. WITHIN
13N135W TO 15N137W TO 15N139W TO 12N140W TO 10N139W TO 11N135W TO
13N135W WINDS 20 TO 33 KT. SEAS 2.5 TO 3.5 M.

FOR THE FORECAST, KARINA WILL MOVE TO 13.6N 115.5W THIS AFTERNOON, STRENGTHEN TO A
HURRICANE NEAR 15.1N 116.9W SAT MORNING, 16.5N 118.9W SAT
AFTERNOON, 17.5N 120.7W SUN MORNING, 18.2N 122.5W SUN AFTERNOON,
AND 18.4N 124.2W MON MORNING. KARINA WILL CHANGE LITTLE IN
INTENSITY AS IT MOVES TO 19.3N 127.3W EARLY TUE. FRESH TO STRONG
NORTHERLY GAP WINDS WILL CONTINUE TO PULSE IN THE GULF OF
TEHUANTEPEC THROUGH EARLY SUN WITH LOCALLY ROUGH SEAS THERE AT
TIMES, THEN PULSING TO MODERATE TO FRESH THEREAFTER. A SURGE OF
FRESH TO LOCALLY STRONG SOUTHEASTERLY WINDS IS POSSIBLE
ASSOCIATED WITH CONVECTIVE COMPLEXES MAY MOVE UP THE CENTRAL AND
NORTHERN GULF OF CALIFORNIA BOTH TONIGHT AND SAT NIGHTS. LOOKING
AHEAD, ANOTHER AREA OF LOW PRESSURE IS FORECAST TO FORM THIS
WEEKEND WELL TO THE SOUTH OF SOUTHWESTERN MEXICO. ENVIRONMENTAL
CONDITIONS APPEAR FAVORABLE FOR GRADUAL DEVELOPMENT OF THIS
SYSTEM, AND A TROPICAL DEPRESSION IS LIKELY TO FORM EARLY NEXT
WEEK WHILE IT MOVES WEST- NORTHWESTWARD TO NORTHWESTWARD AT 10 TO
15 KT, POSSIBLY BRINING INCREASING WINDS AND SEAS ALONG A
SIMILAR PATH TO KARINA.

TROPICAL STORM KARINA IS CENTERED NEAR 12.7N 114.3W AT 28/0900
UTC, MOVING NORTHWEST AT 11 KT. ESTIMATED MINIMUM CENTRAL
PRESSURE IS 999 MB. MAXIMUM SUSTAINED WIND SPEED IS 45 KT WITH
GUSTS TO 55 KT. PEAK SEAS ARE AROUND 15 FT (4.5 M). NUMEROUS
MODERATE TO STRONG THUNDERSTORMS EXTEND 240 NM IN THE NW AND 120
NM SE SEMICIRCLES. KARINA IS MOVING TOWARD THE WEST- NORTHWEST
AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE OVER THE NEXT
SEVERAL DAYS, REACHING ITS CLOSEST POINT OF APPROACH TO CLARION
ISLAND LATE FRI NIGHT INTO EARLY SAT. STRENGTHENING IS
ANTICIPATED, AND KARINA IS FORECAST TO BECOME A HURRICANE OVER
THE WEEKEND. SWELLS GENERATED BY TROPICAL STORM KARINA WILL BEGIN
TO AFFECT PORTIONS OF THE COAST OF SOUTHWEST MEXICO AND THE BAJA
CALIFORNIA PENINSULA THIS WEEKEND. THESE SWELLS ARE LIKELY TO
CAUSE LIFE- THREATENING SURF AND RIP CURRENT CONDITIONS. PLEASE
CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE. PLEASE READ THE
LATEST HIGH SEAS FORECAST ISSUED BY THE NATIONAL HURRICANE CENTER
AT WEBSITE
- HTTPS://WWW.NHC.NOAA.GOV/TEXT/MIAHSFEP2.SHTML AND THE LATEST
KARINA NHC FORECAST/ADVISORY AND PUBLIC ADVISORY AT
WWW.HURRICANES.GOV FOR MORE DETAILS.

SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - W 9-11, Seas SSW 0-4.6 ft @ 17sec
TONITE - N 7-9, Seas SSW 0-5.6 ft @ 16sec
SATURDAY - N 7-9, Seas SSW 0-5.6 ft @ 16sec
SATURDAY NIGHT - ESE 9-11, Seas SSW 0-5.3 ft @ 15sec

LONG-TERM MAZATLAN TO BAHIA BANDERAS
SUNDAY - SE 14-17, Seas SSW 0-5.2 ft @ 15sec
MONDAY - W 6-8, Seas SSW 0-3.9 ft @ 13sec
TUESDAY - WNW 6-8, Seas SW 0-3.9 ft @ 12sec
WEDNESDAY - WSW 6-8, Seas SW 0-3.4 ft @ 12sec
THURSDAY - E 10-13, Seas SW 0-3.3 ft @ 12sec