Marine Forecasts

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7 Day Forecast for Marine Location Near Ludington, MI

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Area Discussion for - Grand Rapids, MI

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FXUS63 KGRR 271134 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 634 AM EST Wed Jan 27 2021

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 154 AM EST Wed Jan 27 2021

- Some risk for accumulating snow Sat Night - Sunday

- Isolated impacts possible into Thu along the lakeshore

- Cold temps into Saturday . especially at the start of each day

DISCUSSION. (Today through next Tuesday) Issued at 154 AM EST Wed Jan 27 2021

- Some risk for accumulating snow Sat Night - Sunday

Overall there is still a fair amount of spread in the models with the GFS showing the earliest and most northerly look to the snow shield. The GFS would warrant accumulations perhaps all the way up to Mt Pleasant. The High Res Euro and Ukmet keep the risk for accumulating snow to the southwest of Grand Rapids with only light amounts shown. No real trends noted between the models with this run However. this system . centered off the CA coast is rather energetic based on satellite displays and ltg fields. Considering much off the system has not been sampled by the raobs . much can change with the timing and track. Close monitoring will be needed going forward. We will keep the forecast fairly close to the previous forecast with high chance pops mainly to the southwest of Grand Rapids at this time.

- Isolated impacts possible into Thu along the lakeshore

The north to northwest flow of arctic air over Lake MI will generate bands of snow showers that could clip the points over then next few periods. These snow showers/flurries will come ashore Thursday as the flow backs to the west. Overall the moisture is shown to be shallow . under 5k ft which should act to limit any impacts. The DGZ is shown to be at the cloud tops. For now we will keep the POP relatively low at this time.

- Cold temps into Saturday . especially at the start of each day

Cold air advection will persist into Thursday keeping temperatures well below normal With the flow from the north . inland areas may see some temporary clearing which may allow for temps to tank at night. The fresh snowfall will aid in the radiational cooling. An example of this temperatures dip is going on down in Van Buren and Allegan Counties at this time. KLWA is 9 degrees as of 300 am. Divergent low level flow cleared the skies out and some stations dropped into the 9 to 11 degree range. So each night we will conservatively feature single digits inland for temps. Factoring in some wind and there could be wind chills dropping to near zero impacting anyone outside at that time of the day.

AVIATION. (For the 12Z TAFS through 12Z Thursday morning) Issued at 612 AM EST Wed Jan 27 2021

MVFR Cigs continue to dominate the skies this morning with some clearing at LAN. Expect these cigs to continue through most of the day due to the cold surface temperatures and the lack of mixing. Skies will finally clear out this evening and should gradually clear by 06Z, with the majority of the area turning VFR by that time. Winds will be northerly around 10 kts although some gusts to 20 kts are still possible this evening. Snow showers are possible along the lakeshore though they will remain west enough not to effect any airport. However Vsbys in and around these snow showers along the lakeshore could reduce vsbys. These showers will be possible between 18Z to 06Z Thursday.


MARINE. Issued at 154 AM EST Wed Jan 27 2021

The gusty northerly flow over the nearshore waters will continue into Thursday leading to hazardous conditions for small craft. High pressure moves in by Friday diminishing the winds. Conditions could turn hazardous again for Sunday as another storm tracks just south of MI leading to gusty offshore winds.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . Small Craft Advisory until 7 AM EST Thursday for LMZ844>849.



SYNOPSIS . MJS DISCUSSION . MJS AVIATION . Ceru MARINE . MJS

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Weather Reporting Stations

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Wind History for Ludington, MI

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NE7 G10

NE6 G13

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NE9 G15

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NE3

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NE3 G6

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NE5 G10

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NE6 G12

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NE8 G12

NE6 G10

NE5 G9

NE8 G14

NE7 G17

NE9 G12

NE7 G14

NE7 G11

2 days ago

SE5 G10

SE6 G9

SE9 G17

SE7 G10

SE5 G9

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S6 G11

SW4 G9

N1 G4

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N1 G4

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Ludington, Mason County Airport, MI	2 mi	64 min	N 0	10.00 mi	Overcast	23°F	17°F	77%	1025.1 hPa
Manistee County - Blacker Airport, MI	24 mi	63 min	NNE 8	9.00 mi	Light Snow	23°F	15°F	72%	1026.4 hPa

Link to 5 minute data for KLDM

Wind History from LDM (wind in knots)

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N7

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Tide / Current Tables for

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Tide / Current Tables for

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Weather Map

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Ground Weather Radar Station

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