Mazatlan to Banderas Bay Forecast
August 30, 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 KARINA NEAR 17.0N 120.2W 987 MB AT 0300 UTC AUG
30 MOVING WNW OR 300 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 260 NM NE
QUADRANT...240 NM SE QUADRANT...90 NM SW QUADRANT...AND 160 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 300 NM NE
QUADRANT...240 NM SE QUADRANT...120 NM SW QUADRANT...AND 210 NM
NW QUADRANT WITH SEAS TO 9.5 M. ELSEWHERE WITHIN 18N113W TO
21N116W TO 21N120W TO 18N123W TO 15N122W TO 13N115W TO 18N113W
WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN
18N108W TO 24N113W TO 23N122W TO 11N126W TO 08N115W TO 18N108W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.12 HOUR FORECAST HURRICANE KARINA NEAR 17.3N 121.6W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.24 HOUR FORECAST HURRICANE KARINA NEAR 17.6N 123.3W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS
WITHIN 170 NM NE QUADRANT...150 NM SE QUADRANT...90 NM SW
QUADRANT...AND 140 NM NW QUADRANT. SEAS 4 M OR GREATER 360 NM NE
AND 180 NM SW SEMICIRCLES WITH SEAS TO 9.5 M. ELSEWHERE WITHIN
21N118W TO 24N124W TO 21N127W TO 15N125W TO 15N120W TO 21N118W
WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN 28N117W
TO 29N124W TO 25N132W TO 13N128W TO 10N121W TO 19N111W TO 28N117W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE KARINA NEAR 18.0N 126.5W. MAXIMUM SUSTAINED
WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS WITHIN 120
NM NW AND SE QUADRANTS...140 NM NE QUADRANT AND 90 NM SW QUADRANT.
SEAS 4 M OR GREATER WITHIN 420 NM NE AND 210 NM SW SEMICIRCLES
WITH SEAS TO 10.5 M. ELSEWHERE WITHIN 20N122W TO 24N125W TO
21N131W TO 16N129W TO 15N127W TO 17N123W TO 20N122W WINDS 20 TO
33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN 23N116W TO
29N122W TO 25N134W TO 20N137W TO 10N126W TO 14N118W TO 23N116W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
...HURRICANE WARNING...
.TROPICAL STORM LOWELL NEAR 13.2N 138.1W 1001 MB AT 0300 UTC AUG
30 MOVING W OR 270 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM E SEMICIRCLE
AND 60 NM W SEMICIRCLE. SEAS 4 M OR GREATER WITHIN 30 NM OF
CENTER EXCEPT 60 NM NW QUADRANT WITH SEAS TO 4.0 M. ELSEWHERE WITHIN
16N136W TO 17N140W TO 12N140W TO 11N136W TO 13N135W TO 16N136W
WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 13.0N 142.1W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 30 NM E SEMICIRCLE AND 50 NM W SEMICIRCLE. OVER FORECAST
WATERS E OF 140W WITHIN 15N138W TO 17N140W TO 11N140W TO 12N138W
TO 13N137W TO 15N138W E TO SE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE LOWELL W OF AREA NEAR 13.1N 145.9W.
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM NE QUADRANT...40 NM SE QUADRANT...60 NM SW
QUADRANT...AND 70 NM NW QUADRANT. OVER FORECAST WATERS E OF 140W
CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
WHILE THE MAIN IMPACTS OF KARINA REMAIN WEST OF THE MEXICAN
OFFSHORE WATERS, STRONG TO NEAR GALE FORCE WINDS AND ROUGH TO
VERY ROUGH SEAS ON THE FAR NORTHEAST PERIPHERY OF KARINA ARE
REACHING THE REVILLAGIGEDO ISLANDS. OUTER RAINBANDS ASSOCIATED
WITH THE CYCLONE'S CIRCULATION ARE ALSO MOVING ACROSS THE
ISLANDS. FRESH TO STRONG N GAP WINDS CONTINUE TO BLOW ACROSS
TEHUANTEPEC REGION AND DOWNWIND TO NEAR 14N. GENTLE TO LOCALLY
MODERATE SOUTHERLY WINDS AND SLIGHT SEAS DOMINATE THE GULF OF
CALIFORNIA. GENTLE TO MODERATE WINDS AND MODERATE SEAS ARE NOTED
ELSEWHERE.
FOR THE FORECAST, TROPICAL STORM KARINA IS WEST OF THE MEXICAN
OFFSHORE WATERS NEAR 17.0N 120.2W AT 8 PM PDT, AND IS MOVING
WEST- NORTHWEST AT 14 KT. STRONG SE WINDS ARE IMPACTING THE
REVILLAGIGEDO ISLANDS THROUGH SUN, ON THE FAR EASTERN PERIPHERY
OF T.S. KARINA. THESE WINDS WILL DIMINISH THROUGH LATE SUN AS THE
STORM MOVES FARTHER WEST. ASSOCIATED ROUGH TO VERY ROUGH SEAS
WILL GRADUALLY SUBSIDE FROM EAST TO WEST ACROSS THE ISLANDS
THROUGH SUN NIGHT AND EARLY MON. FRESH TO STRONG NORTHERLY GAP
WINDS AND OCCASIONAL ROUGH SEAS WILL CONTINUE TO PULSE IN THE
GULF OF TEHUANTEPEC THROUGH EARLY SUN. FRESH TO STRONG SOUTHERLY
WINDS ARE EXPECTED ACROSS THE NORTHERN AND CENTRAL GULF OF
CALIFORNIA THROUGH SUN NIGHT INTO MON. LOOKING AHEAD, AN AREA OF
DISTURBED WEATHER, ASSOCIATED WITH A TROPICAL WAVE, IS LOCATED
WELL TO THE SOUTH OF SOUTHWESTERN MEXICO. THIS SYSTEM IS EXPECTED
TO MOVE WEST- NORTHWESTWARD TO NORTHWESTWARD AT 10 TO 15 KT.
ENVIRONMENTAL CONDITIONS APPEAR FAVORABLE FOR GRADUAL DEVELOPMENT
OF THIS SYSTEM, AND A TROPICAL DEPRESSION IS LIKELY TO FORM IN
THE NEXT SEVERAL OF DAYS.
TROPICAL STORM KARINA IS CENTERED NEAR 17.0N 120.2W AT 30/0300
UTC, MOVING WEST-NORTHWEST AT 14 KT. ESTIMATED MINIMUM CENTRAL
PRESSURE IS 987 MB. MAXIMUM SUSTAINED WIND SPEED IS 60 KT WITH
GUSTS TO 75 KT. PEAK SEAS ARE AROUND 31 FT (9.5 M). NUMEROUS
MODERATE TO ISOLATED STRONG CONVECTION IS NOTED WITHIN 150 NM OF
THE CENTER. KARINA IS MOVING TOWARD THE WEST-NORTHWEST, FOLLOWED
BY A MORE WESTERLY MOTION OVER THE NEXT DAY OR TWO. KARINA IS
JUST BELOW HURRICANE INTENSITY. STRENGTHENING IS FORECAST DURING
THE NEXT SEVERAL DAYS. KARINA IS FORECAST TO BECOME A HURRICANE
WITHIN THE NEXT DAY AND COULD BECOME A MAJOR HURRICANE EARLY NEXT
WEEK. SWELLS GENERATED BY 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.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - E 14-17, Seas SSW 0-5.1 ft @ 15sec
TONITE - E 3-4, Seas SSW 0-4.4 ft @ 14sec
MONDAY - WNW 7-9, Seas SSW 0-4.1 ft @ 13sec
MONDAY NIGHT - WSW 2-3, Seas SSW 0-4 ft @ 13sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
TUESDAY - WSW 6-7, Seas SSW 0.7-3.7 ft @ 13sec
WEDNESDAY - ENE 10-13, Seas SSW 0-3.7 ft @ 17sec
THURSDAY - W 6-8, Seas SSW 0-6.2 ft @ 17sec
FRIDAY - NNW 12-15, Seas SSW 0-5 ft @ 16sec
SATURDAY - N 10-12, Seas SSW 0-4.9 ft @ 16sec