Wednesday, July8, 2020
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Marine Weather and Tides
Muskegon Heights, 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 6:12AMSunset 9:28PM Wednesday July 8, 2020 4:35 AM EDT (08:35 UTC) Moonrise 11:05PMMoonset 8:37AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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- 406 Am Edt Wed Jul 8 2020
Early this morning..East winds 5 to 10 knots. Partly cloudy with isolated rain showers. Waves less than 1 foot.
Today..South winds 5 to 10 knots veering southwest. Sunny. Waves less than 1 foot.
Tonight..Southeast winds 5 to 10 knots. Mostly clear. Waves less than 1 foot.
Thursday..South winds 5 to 15 knots. Mostly Sunny with a slight chance of showers and Thunderstorms. Waves 1 to 2 feet.
Thursday night..Southwest winds 5 to 10 knots. Partly cloudy with a chance of showers and Thunderstorms. Waves 1 to 2 feet.
Friday..West winds 10 to 15 knots. Mostly Sunny with a chance of showers and Thunderstorms. Waves 1 to 2 feet.
Saturday..Northwest winds 10 to 15 knots. Sunny. Waves 1 to 2 feet.
Sunday..Northwest winds 10 to 20 knots. Mostly Sunny with a chance of showers and Thunderstorms. Waves 1 to 2 feet.
LMZ847 Expires:202007082000;;504890 FZUS53 KGRR 080806 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 AM EDT Wed Jul 8 2020 For waters within five nautical miles of shore on Lake Michigan LMZ847-082000-


7 Day Forecast for Marine Location Near Muskegon Heights, MI
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location: 43.23, -86.2     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 080727 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 327 AM EDT Wed Jul 8 2020

LATEST UPDATE . Synopsis/Discussion/Marine

SYNOPSIS. Issued at 327 AM EDT Wed Jul 8 2020

- Hot Wednesday and Thursday, scattered showers and storms

- Near-normal temperatures return for several days

DISCUSSION. (Today through next Tuesday) Issued at 327 AM EDT Wed Jul 8 2020

-- Hot Wednesday and Thursday, scattered showers and storms --

Debated a heat advisory for these final two days of the lengthy heat wave, given the cumulative stress and slightly hotter and more humid air arriving. However, expected heat index still doesn't quite reach 100 degrees for very long if at all, and increased confidence in afternoon showers and thunderstorms may temper the heat somewhat. The warmth has been ubiquitous and consistently messaged this past week, but the message should continue to be safety knowing the gradually increasing risk of exhaustion/related illnesses for those unable to escape the heat.

Will increase precip chances for areas near and east of US-131 this afternoon, given pretty strong agreement in the convection- allowing models of scattered downpours. Feel the HRRR has been pretty reliable in picking out the diurnal convection hot zones (usually from convergence along the lake breeze) during this heat wave. Similar to many previous days, modeled thermodynamic soundings support lightning in some of the cells.

Thursday, additional scattered afternoon convection should develop in the slightly increasing southwesterly flow ahead of an upper-level trough. Scattered convection will persist overnight into Friday as the trough slowly moves overhead and increasing jet dynamics maintain instability. Soundings Thursday afternoon into Friday morning look pretty moist though the convective layer, with PW over 1.75 inches, so where it rains it'll pour. Given the moist soundings and pretty weak shear, severe weather is unlikely.

-- Near-normal temperatures return for several days --

Tendency for a strengthening anticyclone over the desert southwest and broad troughing over the Great Lakes / northeast this weekend favors northwest flow and a break from the 90s Friday into early next week. Ensembles and CPC's outlooks have been favoring advecting the heat back toward our region mid-late next week. A pretty strong baroclinic zone and upper-level jet between the southern CONUS high and the Canadian Plains low hints at the weather being potentially active and thus the duration of the heat would be in question, but there's plenty of time to iron out those details.

AVIATION. (For the 06Z TAFS through 06Z Wednesday night) Issued at 148 AM EDT Wed Jul 8 2020

VFR early this morning with some scattered cloud decks around 7,000 feet. Similar to many days of the previous week, daytime cumulus clouds will develop after 15Z with bases around 5,000 feet. Models are pretty set on the idea of scattered showers and perhaps thunderstorms developing between 18 and 00 Z, mainly RQB, GRR, AZO, and areas to the east. Winds will probably be much more variable and gusty than indicated in the TAFs during this period, as surface winds will tend to emanate out from showers via weak to moderate microbursts.

MARINE. Issued at 327 AM EDT Wed Jul 8 2020

Main hazard for Lake Michigan will be scattered thunderstorms Thursday night. Winds and waves otherwise look pretty tame.

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

SYNOPSIS . CAS DISCUSSION . CAS AVIATION . CAS MARINE . CAS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 7 mi25 min ENE 6 G 7 75°F 1013 hPa70°F
45029 23 mi25 min ENE 9.7 G 14 75°F 77°F2 ft1012.5 hPa68°F
HLNM4 - 9087031 - Holland, MI 32 mi47 min ENE 8 G 11 76°F 67°F1013 hPa69°F
LDTM4 - 9087023 - Ludington, MI 51 mi53 min Calm G 1 72°F 69°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI5 mi40 minE 510.00 miA Few Clouds75°F68°F79%1013.2 hPa
Fremont Municipal Airport, MI18 mi40 minN 010.00 miFair72°F69°F91%1014.2 hPa

Link to 5 minute data for KMKG

Wind History from MKG (wind in knots)
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Last 24hrCalmSE5SE3CalmS5SW7S9SW8W7SW8SW8W7SW8SW7SW8SW5SW3W9NW7W6NW4N5CalmE5
1 day agoCalmCalmCalmCalmS3SW4SW5SW7SW8SW9SW7SW10SW9SW8SW6S4SW5CalmCalmCalmCalmCalmNW6Calm
2 days agoCalmE3CalmCalmCalmW4W8NW7W7SW8SW7W9W7W64W4W5W3NW4CalmCalmCalmSW3Calm

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 (4,6,7,8)
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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.