099
FZUS63 KMQT 080155
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
955 PM EDT Sun Jul 7 2024

For waters beyond 5 nautical miles of shore on Lake Superior.

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...As broad 30.0 inch ridging resides over the East
Coast, a 29.9 inch low pressure trough is slowly moving east
over Lake Superior tonight. This trough will dissipate by Monday
night as much of the eastern CONUS is at arond 29.9 inches.
Tuesday into Wednesday, high pressure over northern Ontario builds
to 30.1 inches as the remnants of Beryl reach the southern Great
Lakes basin at 29.7 inches by midday Wednesday. Beryl will
dissipate by Friday and the 30.1 inch high will lift into the
Hudson Bay as Lake Superior will be between the 30.4 inch Bermuda
High and a broad 29.8 inch trough over the Great Plains.

LSZ162-081000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
955 PM EDT Sun Jul 7 2024 /855 PM CDT Sun Jul 7 2024/

.REST OF TONIGHT...East winds 5 to 15 knots backing northeast
after midnight, then backing west late. A slight chance of
showers and thunderstorms by late evening. Patchy fog after
midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Patchy fog. A slight chance of showers. A slight
chance of thunderstorms by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. A slight chance of showers and thunderstorms through
midnight. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots backing west
after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.

$$

LSZ263-081000-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
955 PM EDT Sun Jul 7 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots becoming
southwest less than 10 knots after midnight. A slight chance of
showers and thunderstorms by late evening. Patchy fog after
midnight. Waves calm to 2 feet.
.MONDAY...West winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon. Patchy fog. A slight chance of
showers. A slight chance of thunderstorms by mid afternoon. Waves
calm to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight, then becoming west 5 to 15 knots
late. A slight chance of showers and thunderstorms through
midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds less than 10 knots veering west
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds less than 10 knots backing
west after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.

$$

LSZ264-081000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
955 PM EDT Sun Jul 7 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
after midnight, then diminishing to less than 10 knots late. A
slight chance of showers and thunderstorms. Patchy fog after
midnight. Waves calm to 2 feet.
.MONDAY...West winds less than 10 knots backing southwest late.
Patchy fog. Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds less than 10 knots veering west
late. Patchy fog through midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds less than 10 knots veering west
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds less than 10 knots backing
west after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.

$$

LSZ265-081000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
955 PM EDT Sun Jul 7 2024

.REST OF TONIGHT...South winds 5 to 15 knots. A slight chance of
showers and thunderstorms. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots veering northeast in the
afternoon, then veering east late. A chance of showers and a
slight chance of thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight, then veering west late. A slight chance of showers and
thunderstorms through midnight. Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots veering northeast by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southeast winds less than 10 knots. Waves calm
to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...North winds 5 to 15 knots backing northwest
after midnight. Waves calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing south. Waves
calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.

$$

LSZ266-081000-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
955 PM EDT Sun Jul 7 2024

.REST OF TONIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots late. A slight chance of showers and thunderstorms.
Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots veering west in the
afternoon, then veering north late. Patchy fog. A chance of
showers and a slight chance of thunderstorms. Waves calm to
2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight, then veering west late. A slight chance of showers and
thunderstorms through midnight. Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds less than 10 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...North winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing south. Waves
calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.

$$

LSZ267-081000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
955 PM EDT Sun Jul 7 2024

.REST OF TONIGHT...South winds 10 to 20 knots. A chance of
showers and thunderstorms after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots veering northwest late. A
chance of showers and a slight chance of thunderstorms. Patchy
fog by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots veering northwest after
midnight. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...North winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing southwest.
Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.

$$
LSZ261-081000-
MAFOR 0803/
Superior West 11200 12500 11600 14500. Waves 1 foot or less.

Superior North Central 11300 12400 11600 11700 12500 11600. Waves
2 feet or less.

Superior South Central 12410 11400 11500 11700 11100 12200. A
chance of showers Monday afternoon. Waves 2 feet or less.

Superior East 14410 11500 12600 11500. A chance of showers Monday
evening. Waves 2 feet or less.

$$

GS

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes