fzus63 kdtx 201940
glflh 
expires:202608210345;;066727

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt thu aug 20 2026

for waters beyond five nautical miles off shore on lake huron

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...high pressure, 30.00 inches, builds into the great
lakes today and friday. the next low pressure system then arrives
saturday, dragging a cold front across the area and increasing
shower and thunderstorm chances. post-frontal northwest flow
leads to gusty winds sunday.


lhz361>363-210345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
340 pm edt thu aug 20 2026

.tonight...light and variable winds becoming east 5 to 10 knots
by midnight...then veering to the southeast early in the morning.
waves 2 feet or less. 
.friday...south winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. a chance of showers
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet in
the afternoon. 
.friday night...southeast winds 10 to 15 knots. a chance of
showers. a chance of waterspouts after midnight. waves 3 to
5 feet. 
.saturday...south winds 5 to 10 knots. a chance of waterspouts in
the morning. showers in the morning...then showers and a chance
of thunderstorms in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon. 
.saturday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. a chance of
showers. waves 4 to 6 feet. waves occasionally around 8 feet. 
.sunday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots late in the evening. gusts to 30 knots. a chance of 
showers in the morning. a chance of waterspouts in the morning. 
waves 8 to 12 feet. waves occasionally around 15 feet. 
.monday...northwest winds 15 to 20 knots becoming west 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...west winds 5 to 10 knots backing to the southwest
until early evening...then becoming south 10 to 15 knots by
midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 201940
glflh 
expires:202608210345;;066728

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt thu aug 20 2026

for waters beyond five nautical miles off shore on lake huron

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...high pressure, 30.00 inches, builds into the great
lakes today and friday. the next low pressure system then arrives
saturday, dragging a cold front across the area and increasing
shower and thunderstorm chances. post-frontal northwest flow
leads to gusty winds sunday.


lhz462>464-210345-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
340 pm edt thu aug 20 2026

.tonight...northeast winds 5 to 10 knots veering to the east
after midnight. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.saturday...south winds 5 to 10 knots. a chance of showers in the
morning...then showers and a chance of thunderstorms in the
afternoon. a chance of waterspouts. waves 1 to 3 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest
15 to 20 knots in the late evening and overnight. showers likely
and a chance of thunderstorms in the evening...then showers
likely after midnight. waves 1 to 3 feet building to 4 to 6 feet
in the late evening and overnight. waves occasionally around
8 feet. 
.sunday...northwest winds 15 to 20 knots increasing to 20 to
25 knots late in the morning...then decreasing to 15 to 20 knots
late in the evening. gusts to 30 knots. a chance of waterspouts.
a chance of showers. a chance of thunderstorms late in the
afternoon. waves 6 to 9 feet. waves occasionally around 11 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots . waves 4 to 6 feet subsiding to 1 to 3 feet by
midnight. waves occasionally around 8 feet. 
.tuesday...west winds 5 to 10 knots backing to the southwest
early in the evening...then becoming south 10 to 15 knots by
midnight. waves 2 feet or less. 


$$