Thursday, April2, 2020
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Marine Weather and Tides
Hart, MI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:22AMSunset 8:14PM Thursday April 2, 2020 12:30 PM EDT (16:30 UTC) Moonrise 12:36PMMoonset 3:23AM Illumination 72% Phase: Waxing Gibbous; Moon at 9 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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LMZ848 Whitehall To Pentwater Mi- 1105 Am Edt Thu Apr 2 2020
Rest of today..Northwest winds 5 to 10 knots. Sunny. Waves less than 1 foot.
Tonight..North winds 5 to 10 knots veering east after midnight. Partly cloudy. Waves less than 1 foot.
Friday..Southeast winds 5 to 10 knots veering south. Mostly Sunny. Waves 1 foot or less.
Friday night..South winds 5 to 15 knots. Mostly cloudy with a chance of rain showers. Waves 1 foot or less.
Saturday..North winds 10 to 20 knots. Rain showers likely. Waves 2 to 3 feet.
Sunday..Northeast winds 5 to 15 knots. Sunny. Waves 1 foot or less.
Monday..Southeast winds 10 to 15 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot.
LMZ848 Expires:202004022100;;460019 FZUS53 KGRR 021506 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1105 AM EDT Thu Apr 2 2020 For waters within five nautical miles of shore on Lake Michigan LMZ848-022100-


7 Day Forecast for Marine Location Near Hart, MI
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location: 43.66, -86.53     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 021130 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 730 AM EDT Thu Apr 2 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 222 AM EDT Thu Apr 2 2020

-Patchy to dense fog overnight

-Chances for rain Saturday

-Rain and thunderstorm chances increase next week

DISCUSSION. (Today through next Wednesday) Issued at 222 AM EDT Thu Apr 2 2020

-Patchy to dense fog overnight Collaborated with IWX and issued a Dense Fog Advisory through 9 AM. The GOES nighttime microphysics shows not only the formation of fog the last few hours but it continues to thicken and expand. This matches with the latest HRRR. Benton Harbor observation already has 1/4SM in fog. Trapped low level moisture could linger through mid morning in the lowest regions but most areas will see visibilities improve between 8 AM to 10 AM.

-Chances for rain Saturday

The High pressure that will dominate the region today and Friday will give way to mid level trough that will bring a band of precipitation to the region Saturday. EC and GFS are in fair agreement on timing and location of the showers though precipitation amounts look fairly low.

-Rain and thunderstorm chances increase next week

The next chance for substantial precipitation will be a system that should trek through Michigan next week. Latest models bring the warm front through the region Monday night into Tuesday. This will be followed by a cold front though the ensembles continue to diverge on a solution. So exact timing of this system will have to wait. PWAT values due look strongest Tuesday night into Wednesday.

AVIATION. (For the 12Z TAFS through 12Z Friday morning) Issued at 726 AM EDT Thu Apr 2 2020

The IFR and lower fog/stratus will gradually dissipate this morning as temperatures start to warm up. KMKG should remain just north of the main axis of fog/stratus. The low levels will dry out for the remainder of the day leading to VFR conditions that are expected to last into tonight.

MARINE. Issued at 222 AM EDT Thu Apr 2 2020

Due to the high pressure, the wind profiles continue to be fairly week all the way into Friday evening. What that means for waves on Lake Michigan is 1 foot or less tonight through at least Friday evening. 20 knot winds show up at 1,000ft Friday night. However these shouldn't mix down to the surface. So expect light winds and small waves on Lake Michigan into Saturday.

HYDROLOGY. Issued at 332 PM EDT Wed Apr 1 2020

River levels across Southwest Lower Michigan remain elevated due to recent rains. The USGS percent of normal page shows much higher than normal levels along the Kalamazoo River basin and much of the Grand basin. The most impacted by far though are the rivers in the Kalamazoo basin where 90% percentile and above values are common. All of that said we have no sites that are at or forecast to reach Flood Stage. Rivers are either experiencing within bank rises or rises above bankfull that are not impacting anything. The sites that are either close to flood stage or have significant within bank rises are all on the Grand and include Ionia, Comstock Park and Robinson TWP. The good thing is that we are expecting mainly dry conditions the next couple of days which should allow rivers to slowly fall. The next chance for precipitation comes Friday night into Saturday and amounts do not look too heavy, on the order of a quarter of an inch or less. The rivers should not be impacted too much by a quarter of an inch.

GRR WATCHES/WARNINGS/ADVISORIES. MI . Dense Fog Advisory until 9 AM EDT this morning for MIZ064-071.

LM . None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDTM4 - 9087023 - Ludington, MI 20 mi108 min WSW 1.9 G 2.9 39°F 36°F
BSBM4 - Big Sable Point, MI 27 mi110 min SW 2.9 G 2.9 39°F 1023.7 hPa
MKGM4 - Muskegon, MI 32 mi80 min NW 4.1 G 4.1 39°F 1024 hPa36°F
MEEM4 - Manistee Harbor, MI 42 mi110 min W 4.1 G 4.1 41°F 1023.4 hPa

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ludington, Mason County Airport, MI22 mi35 minW 510.00 miFair50°F40°F70%1022.3 hPa

Link to 5 minute data for KLDM

Wind History from LDM (wind in knots)
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Last 24hrN6NW9N9NW7N6N7N8N6N4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW5W5
1 day agoN3N5N7N8N7N8N8N6N4NE4NE3NE3CalmCalmCalmN3CalmN3CalmCalmNE3CalmNE4NE3
2 days agoN11
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N6N9N7NE5CalmCalmCalmCalmN5N5NE5NE4NE3CalmNE5NE5NE5NE3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of GreatLakes    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Grand Rapids, MI (12,3,4,5)
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Ground Weather Radar Station Grand Rapids/Muskegon, MI
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Disclaimer:
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.