FZUS53 KDTX 180907
NSHDTX
Experimental Tabular Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
507 AM EDT Sat Oct 18 2025
Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.SYNOPSIS...Low pressure, 29.20 inches, rapidly develops along a cold front over
the mid-Mississippi and moves over lower Michigan Sunday, bringing
the chance for a few southerly gales late Sunday morning with higher
probabilities for northwesterly gales over most of Lake Huron by
Sunday evening. A Gale Watch is in effect late Sunday afternoon
through Sunday night.
LHZ422-181400-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
507 AM EDT Sat Oct 18 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...
.Today...
Weather.............Partly sunny with chance of showers and slight
chance of thunderstorms, then showers likely
with a chance of thunderstorms in the
afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....27%/82%.
.TONIGHT...
Weather.............Showers likely and slight chance of
thunderstorms, then showers and slight chance
of thunderstorms after midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....50%/82%.
.SUNDAY...
Weather.............Showers.
Sfc winds...........Southeast 15 to 20 knots becoming southwest in
the afternoon.
100-ft winds........Southeast 20 to 25 knots becoming southwest in
the afternoon.
Sig waves...........2 to 4 feet building to 3 to 5 feet in the
afternoon.
Ocnl waves..........Around 6 feet in the afternoon.
Prob SmCrft/Gst.....61%/99%.
Prob Gale/Gst.......17%/59%.
.SUNDAY NIGHT...
Weather.............Mostly cloudy with showers, then partly cloudy
with chance of showers after midnight.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 7 feet.
Prob SmCrft/Gst.....51%/75%.
Prob Gale/Gst.......17%/18%.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the morning. slight chance of
showers in the evening, then showers after midnight. Southwest
winds 15 to 20 knots. Waves 5 to 7 feet.
.TUESDAY...Windy, showers. Southwest winds to 30 knots. Waves
5 to 7 feet.
.WEDNESDAY...Breezy. Showers likely. chance of showers after
midnight. Northwest winds 20 to 25 knots. Waves 5 to 7 feet.
$$
LHZ421-181400-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
507 AM EDT Sat Oct 18 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...
.Today...
Weather.............Partly sunny with chance of showers and slight
chance of thunderstorms, then showers likely
and slight chance of thunderstorms in the
afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the morning.
Prob SmCrft/Gst.....36%/91%.
.TONIGHT...
Weather.............Showers likely, slight chance of waterspouts
and thunderstorms, then showers, slight chance
of thunderstorms and waterspouts after
midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....51%/91%.
.SUNDAY...
Weather.............Showers.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........2 to 4 feet building to 5 to 7 feet in the
afternoon.
Ocnl waves..........Around 5 feet building to around 8 feet in the
afternoon.
Prob SmCrft/Gst.....86%/100%.
Prob Gale/Gst.......24%/69%.
.SUNDAY NIGHT...
Weather.............Mostly cloudy with showers, then partly cloudy
with chance of showers after midnight.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
Prob SmCrft/Gst.....64%/82%.
Prob Gale/Gst.......23%/27%.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the morning. slight chance of
showers in the evening, then showers after midnight. Southwest
winds 15 to 20 knots. Waves 5 to 7 feet.
.TUESDAY...Windy, showers. Southwest winds to 30 knots. Waves
5 to 7 feet.
.WEDNESDAY...Breezy. Showers likely. chance of showers after
midnight. Northwest winds 20 to 25 knots. Waves 5 to 7 feet.
$$
LHZ441-181400-
Port Austin to Harbor Beach MI-
507 AM EDT Sat Oct 18 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...
.Today...
Weather.............Mostly sunny with chance of showers, then
mostly cloudy with showers likely with a chance
of thunderstorms in the afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet in the
afternoon.
Ocnl waves..........Around 5 feet.
Prob SmCrft/Gst.....29%/89%.
.TONIGHT...
Weather.............Showers likely with possible thunderstorms and
waterspouts, then showers and slight chance of
thunderstorms after midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....51%/89%.
.SUNDAY...
Weather.............Showers.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
Prob SmCrft/Gst.....93%/100%.
Prob Gale/Gst.......31%/81%.
Prob Storm/Gst......1%/11%.
.SUNDAY NIGHT...
Weather.............Showers, then showers likely after midnight.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
Prob SmCrft/Gst.....71%/89%.
Prob Gale/Gst.......27%/25%.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the morning. slight chance of
showers in the evening, then showers after midnight. Southwest
winds 15 to 20 knots. Waves 5 to 7 feet.
.TUESDAY...Windy, showers. Southwest winds to 30 knots. Waves
5 to 7 feet.
.WEDNESDAY...Breezy. Showers likely. chance of showers after
midnight. Northwest winds 20 to 25 knots. Waves 5 to 7 feet.
$$
LHZ442-181400-
Harbor Beach to Port Sanilac MI-
507 AM EDT Sat Oct 18 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...
.Today...
Weather.............Mostly sunny with a slight chance of showers,
then partly sunny with showers likely and
slight chance of thunderstorms in the
afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
Prob SmCrft/Gst.....26%/93%.
.TONIGHT...
Weather.............Showers likely with possible thunderstorms and
waterspouts, then showers with a chance of
thunderstorms after midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....51%/93%.
.SUNDAY...
Weather.............Showers.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
Prob SmCrft/Gst.....95%/100%.
Prob Gale/Gst.......24%/84%.
Prob Storm/Gst......0%/12%.
.SUNDAY NIGHT...
Weather.............Showers likely.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.
Prob SmCrft/Gst.....72%/91%.
Prob Gale/Gst.......19%/25%.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the morning. slight chance of
showers in the evening, then showers after midnight. Southwest
winds 15 to 20 knots. Waves 5 to 7 feet.
.TUESDAY...Windy, showers. Southwest winds to 30 knots. Waves
5 to 7 feet.
.WEDNESDAY...Breezy. Showers likely. chance of showers after
midnight. Northwest winds 20 to 25 knots. Waves 5 to 7 feet.
$$
LHZ443-181400-
Port Sanilac to Port Huron MI-
507 AM EDT Sat Oct 18 2025
.Today...
Weather.............Mostly sunny, then slight chance of showers and
thunderstorms in the afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
Prob SmCrft/Gst.....32%/92%.
.TONIGHT...
Weather.............Showers with a chance of thunderstorms.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....50%/92%.
.SUNDAY...
Weather.............Showers.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
Prob SmCrft/Gst.....87%/100%.
Prob Gale/Gst.......21%/80%.
.SUNDAY NIGHT...
Weather.............Showers, then showers likely after midnight.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
Prob SmCrft/Gst.....55%/86%.
Prob Gale/Gst.......21%/13%.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the morning. slight chance of
showers in the evening, then showers after midnight. Southwest
winds 15 to 20 knots. Waves 5 to 7 feet.
.TUESDAY...Windy, showers. Southwest winds to 30 knots. Waves
5 to 7 feet.
.WEDNESDAY...Breezy. Showers likely. chance of showers after
midnight. Northwest winds 20 to 25 knots. Waves 5 to 7 feet.
$$
LEZ444-181400-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
507 AM EDT Sat Oct 18 2025
.Today...
Weather.............Mostly sunny, then chance of showers in the
afternoon.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Prob SmCrft/Gst.....22%/90%.
.TONIGHT...
Weather.............Showers with a chance of thunderstorms.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet after
midnight.
Ocnl waves..........Around 6 feet after midnight.
Prob SmCrft/Gst.....50%/90%.
.SUNDAY...
Weather.............Showers.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.
Prob SmCrft/Gst.....85%/100%.
Prob Gale/Gst.......22%/82%.
Prob Storm/Gst......0%/10%.
.SUNDAY NIGHT...
Weather.............Mostly cloudy with showers, then partly cloudy
with chance of showers after midnight.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
Prob SmCrft/Gst.....53%/80%.
Prob Gale/Gst.......21%/16%.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the morning. slight chance of
showers in the evening, then showers after midnight. Southwest
winds 15 to 20 knots. Waves 5 to 7 feet.
.TUESDAY...Windy, showers. Southwest winds to 30 knots. Waves
5 to 7 feet.
.WEDNESDAY...Breezy. Showers likely. chance of showers after
midnight. Northwest winds 20 to 25 knots. Waves 5 to 7 feet.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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