Saturday, July4, 2020
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Marine Weather and Tides
Muskegon, 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 6:09AMSunset 9:29PM Saturday July 4, 2020 8:28 AM EDT (12:28 UTC) Moonrise 8:23PMMoonset 4:27AM Illumination 99% Phase: Waxing Gibbous; 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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LMZ847 Grand Haven To Whitehall Mi- 805 Am Edt Sat Jul 4 2020
Today..Northeast winds 5 to 10 knots backing northwest 10 to 15 knots. Sunny. Waves around 1 foot.
Tonight..North winds 5 to 15 knots veering east after midnight. Clear. Waves around 1 foot.
Sunday..Southwest winds 5 to 10 knots veering northwest. Sunny. Waves less than 1 foot.
Sunday night..Northwest winds around 10 knots veering east late at night, then veering southeast toward daybreak. Mostly clear. Waves less than 1 foot.
Monday..South winds 5 to 10 knots veering southwest. Sunny. Waves 1 foot or less.
Tuesday..Southwest winds 10 to 15 knots. Mostly Sunny. Waves around 1 foot.
Wednesday..Southwest winds 5 to 15 knots. Sunny. Waves around 1 foot.
LMZ847 Expires:202007042000;;300592 FZUS53 KGRR 041206 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 805 AM EDT Sat Jul 4 2020 For waters within five nautical miles of shore on Lake Michigan LMZ847-042000-


7 Day Forecast for Marine Location Near Muskegon, MI
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location: 43.23, -86.26     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 041135 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 735 AM EDT Sat Jul 4 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 329 AM EDT Sat Jul 4 2020

-Hot and dry pattern persisting; high fire danger

-Oppressive heat indices possible next Wed-Fri

-Next decent chance of rain not until next Friday

DISCUSSION. (Today through next Friday) Issued at 329 AM EDT Sat Jul 4 2020

-- Hot and dry pattern persisting; High fire danger --

Little change in the overall pattern into early next week at least with ridging/subsidence and dry air mass prevailing. Persistence fcst the way to go until further notice with mostly sunny skies and highs in the lower 90s. Fortunately the dew point and heat index remain relatively tolerable and shy of advisory criteria. Lack of rainfall and very dry conditions coupled with the hot/dry weather will keep the fire danger elevated for the next several days. Fortunately winds will remain light as sfc ridging persists.

While an isolated shower or storm cannot be completely ruled out over the holiday weekend, especially late in the day on the lake breeze front, will run with a dry fcst. Even if something did manage to develop, coverage would be so low (on the order of 5%) that it's probably not worth mentioning in the fcst. Will not carry any pops until next Tuesday and beyond, but even that's questionable and coverage should be widely scattered at best through next Thursday.

-- Oppressive heat indices possible next Wed-Fri --

Medium range guidance suggesting dew points closer to 70 for the middle to late part of next week, with the center of the upper high settling on top of us again. Heat indices 100-105 look more achievable during this time frame, which would require heat headlines.

-- Next decent chance of rain not until next Friday --

Upper pattern looks more conducive to organized convection by next Friday as upper ridge is suppressed south and faster/flatter pattern takes shape aloft. Thus at this time the highest pops in the next 7 days looks to be next Friday as better deep layer shear and an approaching sfc front interact with our hot/humid/unstable environment.

AVIATION. (For the 12Z TAFS through 12Z Sunday morning) Issued at 735 AM EDT Sat Jul 4 2020

VFR continuing, with light east-northeast sfc winds of 4-8 kts. However northwest winds around 10 kts expected at MKG by mid afternoon into the early evening. Some patchy fog could develop late tonight, but the threat is too low to include any vsbys restrictions in the TAFs at this time.

MARINE. Issued at 329 AM EDT Sat Jul 4 2020

Minimal marine concerns over the next several days with sfc riding continuing to prevail. Periods of briefly higher onshore winds expected from mid afternoon into early evening due to diurnal lake breeze circulation.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . None.

SYNOPSIS . Meade DISCUSSION . Meade AVIATION . Meade MARINE . Meade


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 4 mi38 min E 8 G 9.9 74°F 1016.9 hPa67°F
45029 23 mi28 min ENE 7.8 G 9.7 71°F 72°F1 ft1016.8 hPa (+0.7)66°F
HLNM4 - 9087031 - Holland, MI 32 mi58 min NE 5.1 G 7 71°F 1016.5 hPa68°F
LDTM4 - 9087023 - Ludington, MI 50 mi58 min ENE 1.9 G 4.1 70°F 64°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI3 mi33 minNE 510.00 miMostly Cloudy74°F66°F76%1017.1 hPa
Fremont Municipal Airport, MI20 mi32 minENE 710.00 miFair74°F67°F79%1017.9 hPa

Link to 5 minute data for KMKG

Wind History from MKG (wind in knots)
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Last 24hrCalmW3NW5W8W7W9W9W13
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W9NW8NW8NW6NW5W4W4N4NE7NE6NE5NE5NE4NE7NE7NE5
1 day agoCalmNE6NE7NW7--4W10NW10NW9NW9NW11NW7NW5NW5NW3N3CalmCalmCalmCalmNW3SE3CalmCalm
2 days agoSE9SE8SE8SE7SE7E6
G16
SE93E10NW6NW9N8N5N5N5N6N3NE5CalmCalmCalmCalmN4E4

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    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 (8,2,3,4)
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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.