Wednesday, January27, 2021
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Marine Weather and Tides
Ludington, MI

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 8:03AMSunset 5:52PM Wednesday January 27, 2021 8:58 AM EST (13:58 UTC) Moonrise 4:35PMMoonset 7:39AM Illumination 99% Phase: Full Moon; Moon at 14 days in cycle
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.
Marine Forecasts
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LMZ849 Pentwater To Manistee Mi- 405 Am Est Wed Jan 27 2021
.small craft advisory in effect through Thursday morning...
Early this morning..North winds 10 to 20 knots. Cloudy with a chance of snow. Waves 3 to 5 feet.
Today..North winds 15 to 25 knots. Cloudy with a chance of snow. Waves 3 to 5 feet.
Tonight..North winds 15 to 20 knots. Mostly cloudy with a chance of snow. Waves 3 to 5 feet.
Thursday..Northwest winds 15 to 20 knots. Mostly cloudy with a chance of snow. Waves 2 to 4 feet.
Thursday night..North winds 10 to 15 knots. Mostly cloudy. Waves 1 to 3 feet.
Friday..Northeast winds around 10 knots. Mostly cloudy. Waves around 1 foot.
Saturday..Southeast winds 15 to 20 knots. Mostly cloudy. Waves 1 to 2 feet.
Sunday..Northeast winds 15 to 20 knots. Cloudy. Waves 1 to 2 feet.
LMZ849 Expires:202101272100;;118758 FZUS53 KGRR 270905 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 AM EST Wed Jan 27 2021 For waters within five nautical miles of shore on Lake Michigan LMZ849-272100-


7 Day Forecast for Marine Location Near Ludington, MI
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location: 43.96, -86.44     debug


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


Weather Reporting Stations
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Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ludington, Mason County Airport, MI2 mi64 minN 010.00 miOvercast23°F17°F77%1025.1 hPa
Manistee County - Blacker Airport, MI24 mi63 minNNE 89.00 miLight Snow23°F15°F72%1026.4 hPa

Link to 5 minute data for KLDM

Wind History from LDM (wind in knots)
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N5N6NE5NE3N4NE7NE6NE4E3CalmCalmCalmCalmCalmCalm
1 day agoCalmCalmE5NE5NE3N3E7NE6NE7NE6NE8NE6NE7----NE9NE8
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2 days agoSE7SE8SE9
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S7SE8SE5S5S5S3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3NE3Calm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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Ground Weather Radar Station




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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.