Mazatlan to Banderas Bay Forecast
September 29, 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 RACHEL NEAR 16.0N 105.7W 989 MB AT 2100 UTC SEP
29 MOVING NW OR 305 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 160 NM NE
QUADRANT...140 NM SE QUADRANT...120 NM SW QUADRANT...AND 150 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM N
SEMICIRCLE...240 NM SE QUADRANT AND 120 NM SW QUADRANT WITH SEAS
TO 7 M. ELSEWHERE WITHIN 16N98W TO 20N107W TO 13N109W TO 10N107W TO 10N100W TO
12N98W TO 16N98W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
.12 HOUR FORECAST HURRICANE RACHEL NEAR 17.3N 107.0W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.24 HOUR FORECAST HURRICANE RACHEL NEAR 18.2N 108.0W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS
WITHIN 140 NM E SEMICIRCLE...120 NM SW QUADRANT AND 130 NM NW
QUADRANT. SEAS 4 M OR GREATER 380 NM SE SEMICIRCLE AND 135 NM NW
SEMICIRCLE WITH SEAS TO 8.5 M. ELSEWHERE WITHIN 18N103W TO
22N108W TO 19N113W TO 14N109W TO 10N109W TO 15N103W TO 18N103W
WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN 15N97W
TO 18N103W TO 12N105W TO 09N114W TO 08N109W TO 09N101W TO 15N97W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE RACHEL NEAR 19.4N 109.5W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM E SEMICIRCLE AND 100 NM W SEMICIRCLE. SEAS 4 M OR
GREATER WITHIN 420 NM SE SEMICIRCLE AND 180 NM NW SEMCIRCLE WITH
SEAS TO 8.5 M. ELSEWHERE WITHIN 21N106W TO 21N113W TO 17N112W TO
12N108W TO 13N104W TO 16N103W TO 21N106W WINDS 20 TO 33 KT. SEAS
3.0 TO 4.0 M. REMAINDER OF AREA WITHIN 18N103W TO 25N109W TO
25N115W TO 09N114W TO 09N104W TO 14N94W TO 18N103W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.TROPICAL STORM POLO INLAND NEAR 29.0N 109.7W 992 MB AT 2100 UTC
SEP 29 MOVING NE OR 040 DEG AT 18 KT. MAXIMUM SUSTAINED WINDS 55
KT GUSTS 65 KT. OVER FORECAST WATERS IN THE GULF OF
CALIFORNIA...WITHIN 29N113W TO 28N112W TO 26N109W TO 27N112W TO
29N113W WINDS 20 KT OR LESS. SEAS TO 2.5 M IN MIXED SWELL.
.12 HOUR FORECAST POST-TROPICAL POLO INLAND NEAR 32.6N 105.7W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. CONDTIONS IMPROVED OVER
FORECAST WATERS IN THE GULF OF CALIFORNIA. WINDS 20 KT OR LESS.
SEAS LESS THAN 2.5 M .
.24 HOUR FORECAST...POLO DISSIPATED.
NEWLY DOWNGRADED TROPICAL STORM POLO IS INLAND OVER CENTERED NEAR
28.9N 109.8W AT 29/2100 UTC, MOVING NORTHEAST AT 17 KT. ESTIMATED
MINIMUM CENTRAL PRESSURE IS 991 MB. MAXIMUM SUSTAINED WIND SPEED
IS 55 KT WITH GUSTS TO 65 KT. POLO WILL CONTINUE TO MOVE INLAND
AND WEAKEN TO A TROPICAL DEPRESSION NEAR 32.6N 105.7W WED
MORNING, AND DISSIPATE WED AFTERNOON. SEAS OVER ADJACENT WATERS
OF THE GULF OF CALIFORNIA ARE 16 FT (NEARLY 5 M), BUT SUBSIDING
QUICKLY AS WINDS DIMINISH.
THESE SYSTEMS WILL IMPACT A LARGE MAJORITY OF THE FORECAST
WATERS. ELSEWHERE, FRESH NORTHWEST TO NORTH WINDS ARE OFFSHORE
THE BAJA CALIFORNIA PENINSULA AND LIGHT TO GENTLE WINDS ELSEWHERE
OVER THE MEXICAN OFFSHORE WATERS AND GULF OF CALIFORNIA. ROUGH
SEAS ARE OFFSHORE BAJA CALIFORNIA, WITH MODERATE SEAS ELSEWHERE,
EXCEPT SLIGHT IN THE NORTHERN GULF OF CALIFORNIA.
POLO IS EXPECTED TO PRODUCE RAINFALL TOTALS OF 4 TO 6 INCHES
ACROSS SOUTHERN AND CENTRAL PORTIONS OF SONORA WITH ISOLATED
MAXIMUM TOTALS OF 8 INCHES. THIS RAINFALL MAY PRODUCE LIFE-
THREATENING FLOODING AND MUDSLIDES, ESPECIALLY IN AREAS OF STEEP
TERRAIN. FOR A COMPLETE DEPICTION OF FORECAST RAINFALL ASSOCIATED
WITH POLO, PLEASE SEE THE NATIONAL WEATHER SERVICE STORM TOTAL
RAINFALL GRAPHIC AVAILABLE AT
HURRICANES.GOV/GRAPHICS_EP2.SHTML?RAINQPF
SWELLS GENERATED BY POLO WILL CONTINUE TO AFFECT PORTIONS OF THE
COAST OF THE BAJA CALIFORNIA PENINSULA AND NORTHWESTERN MEXICO
DURING THE NEXT DAY OR SO. THESE SWELLS ARE LIKELY TO CAUSE LIFE-
THREATENING SURF, RIP CURRENTS, AND COASTAL FLOODING. PLEASE
CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
DATA NOTE - Using cached forecast from 6 hours ago.
TODAY - NNW 10-13, Seas WSW 0-4.5 ft @ 11sec
TONITE - N 6-7, Seas S 0-4.7 ft @ 13sec
WEDNESDAY - SW 8-10, Seas S 0-8.9 ft @ 13sec
WEDNESDAY NIGHT - NE 6-8, Seas SSW 0-10.7 ft @ 14sec
LONG-TERM MAZATLAN TO BAHIA BANDERAS
THURSDAY - S 8-10, Seas SSW 0-10.4 ft @ 13sec
FRIDAY - S 17-21, Seas SW 0-10 ft @ 13sec
SATURDAY - S 16-20, Seas SW 0-10.2 ft @ 14sec
SUNDAY - S 16-20, Seas SW 0-9.7 ft @ 13sec
MONDAY - S 23-29, Seas SW 1-3.5 ft @ 13sec