Grand Marais, MN Marine Weather and Tide Forecast

Marine Weather and Tide Forecast for Grand Marais, MN

December 10, 2023 4:13 PM EST (21:13 UTC)
Sunrise 8:35AM   Sunset 5:04PM   Moonrise  6:08AM   Moonset 3:18PM 

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

Marine Forecasts
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LSZ162 Lake Superior West Of A Line From Saxon Harbor Wi To Grand Portage Mn Beyond 5nm- 359 Pm Est Sun Dec 10 2023 /259 Pm Cst Sun Dec 10 2023/
.gale watch in effect from Tuesday morning through Tuesday evening...
Late this afternoon..Northwest winds 5 to 15 knots. Waves calm to 2 feet.
Tonight..Northwest winds 5 to 15 knots backing west late. Waves calm to 2 feet.
Monday..West winds 5 to 15 knots becoming southwest 15 to 25 knots by late morning, then increasing to 20 to 30 knots by mid afternoon. A slight chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet.
Monday night..West gales to 35 knots with a few gale force gusts to 40 knots possible. A chance of snow showers in the evening. Waves building to 8 to 11 feet occasionally to 14 feet, then subsiding to 5 to 8 feet occasionally to 10 feet.
Tuesday..West gales to 35 knots. Waves building to 6 to 9 feet occasionally to 11 feet.
Tuesday night..West winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Waves subsiding to 2 to 4 feet.
Wednesday..West winds 15 to 25 knots backing southwest in the afternoon. Waves 2 to 4 feet.
Wednesday night..Southwest winds 20 to 30 knots increasing to gales to 35 knots after midnight. Waves building to 5 to 8 feet occasionally to 10 feet.
Thursday..Southwest gales to 35 knots. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.
Friday..West winds 15 to 25 knots becoming northwest 10 to 20 knots. Waves subsiding to calm to 2 feet.
note, wave height forecasts are for ice free areas.

No data

7 Day Forecast for Marine Location Near Grand Marais city, MN
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Area Discussion for - Duluth, MN
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Area Forecast Discussion National Weather Service Duluth MN 1130 AM CST Sun Dec 10 2023


- Seasonal temperatures the next few days, then warmer again late this week.

- Snow showers and flurries today.

- Gusty winds return Monday and Tuesday.

Issued at 505 AM CST Sun Dec 10 2023

Today through Monday morning...

Northwest winds will persist across the region today. Stratus will be the norm with intermittent flurries. Highs today will be near normal, in the low and middle 20s. Little additional snow accumulation is expected. Lows tonight will dip into the teens and single digits. Snow showers and flurries should come to an end. Relatively quiet conditions are expected Monday morning.
The sun may make a brief appearance before clouds return during the afternoon.

Monday afternoon through early Wednesday Morning...

Another fast moving area of low pressure will propagate southeastward across northern Ontario Monday night and Tuesday.
The surface pressure gradient will tighten Monday which will result in strong southwest winds initially. A cold front will accompany the system and should move into northwest and north- central Minnesota during the late morning and afternoon hours.
Flurries and snow showers are expected to accompany and trail behind the front Monday afternoon through Tuesday. Areas close to the Canadian border may see minor snow accumulations of less than an inch, while the remainder of the Northland experiences flurries and an occasional light snow shower. Temperatures will climb into the upper 20s to middle 30s ahead of the front. Winds will turn northwest behind the boundary with wind gusts of 20 to 35 mph expected. Winds will be strongest Tuesday afternoon and Tuesday evening. Gusts of 35 to 45 mph are possible along the North Shore with gusts of 25 to 35 mph possible elsewhere across the Northland.

Cold air advection and cyclonic flow aloft will keep the potential for flurries and light snow showers in the picture Tuesday through the pre-dawn hours of Wednesday.

Wednesday morning through next Sunday...

Westerly winds aloft will usher in a surge of warmer air aloft.
Temperatures Wednesday will surge several degrees warmer with highs in the upper 20s to middle 30s. Thursday is shaping up even warmer with much above normal temperatures in the 40s expected. Strong and gusty winds are forecast Wednesday night and Thursday.

A weak cool front will advance east across the region Thursday night and Friday. Temperatures will remain above normal for Friday and Saturday. There may be a few sprinkles or flurries in the wake of the front Friday. Warm air advection returns for Saturday with dry conditions. A cool front may move over the Northland next Sunday with a chance of rain and snow showers.
Cooler temperatures return for the second half of next weekend.

Issued at 1131 AM CST Sun Dec 10 2023

Aside from IFR ceilings at BRD through 21Z, MVFR ceilings continue through most of the TAF period. Terminals could scatter out to VFR briefly tonight into early Monday morning before MVFR ceilings return ahead of an approaching cold front and light flurries or snow by late Monday afternoon into Monday night. Also can't rule out some brief IFR ceilings at HIB early to mid Monday morning.

Winds remain light today, backing to south-southwesterly by Monday morning. Gusts increase above 15 knots by Monday afternoon.

Issued at 1001 AM CST Sun Dec 10 2023

Small craft advisories have been expired as northwest winds have dropped below advisory criteria.

Quieter conditions will be relatively short-lived. Another area of low pressure will dive southeastward across northern Ontario Monday night and Tuesday. The pressure gradient will tighten on Monday with strong west winds developing. Winds will turn northwesterly in the wake of a cold front and will strengthen further. Gale-force gusts of 40 to 45 knots appear increasingly likely for portions of the waters Tuesday into Tuesday evening.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
GD5 - 9099090 - Grand Marais, MN 26 mi56 min 28°F 29.9818°F
KGNA 26 mi78 min 4.1 29°F 30.0515°F
ROAM4 - Rock of Ages, MI 29 mi74 min NNW 8.9G11 26°F 30.06
DISW3 - Devils Island, WI 71 mi74 min NW 9.9G12 27°F 30.0618°F

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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KCKC27 sm18 minNNW 0510 smOvercast21°F7°F53%29.93

Wind History from CKC
(wind in knots)

Tide / Current for
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Weather Map
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GEOS Local Image of GreatLakes   

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