Monday, November20, 2017 L-36.com


Marine Weather and Tides
Muskegon, MI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:44AMSunset 5:17PM Monday November 20, 2017 8:37 AM EST (13:37 UTC) Moonrise 9:27AMMoonset 7:11PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 347 Am Est Mon Nov 20 2017
.gale warning in effect through Tuesday morning...
Today..Southwest winds to 30 knots increasing to gales to 35 knots late in the day. Sunny. Waves 6 to 9 feet.
Tonight..Southwest gales to 40 knots. Partly cloudy. Waves 9 to 13 feet.
Tuesday..Southwest gales to 35 knots veering northwest to 30 knots. Mostly cloudy. A slight chance of rain showers until midday, then a slight chance of rain and snow showers in the afternoon. Waves 8 to 12 feet.
Tuesday night..Northwest winds to 30 knots decreasing to 15 to 20 knots toward daybreak. Mostly cloudy in the evening then becoming partly cloudy. A slight chance of snow showers. Waves 6 to 8 feet.
LMZ847 Expires:201711201630;;686127 FZUS53 KGRR 200847 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 347 AM EST Mon Nov 20 2017 For waters within five nautical miles of shore on Lake Michigan LMZ847-201630-

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 201200
afdgrr
area forecast discussion
national weather service grand rapids mi
700 am est Mon nov 20 2017
latest update...

aviation

Synopsis
Issued at 330 am est Mon nov 20 2017
a relatively quiet period is expected into mid week as no major
weather system are forecast to affect the area. We may see a bit of
light rain on Tuesday along and ahead of a cold frontal passage. In
its wake Tuesday afternoon into Wednesday morning a bit of lake
effect snow will occur. Little to no snow accumulation is expected
however. We will see highs both today and on Tuesday in the 40s.

Temperatures will tumble again behind the Tuesday cold front with
high on Wednesday only forecast to reach the 30s. The thanksgiving
outlooks is for good travel weather across southwest lower michigan
with dry weather and high temperatures around 40.

Short term (today through Wednesday)
issued at 330 am est Mon nov 20 2017
limited concerns in the short term period. A southwesterly gradient
builds in quickly today with breezy conditions expected. Dry weather
is forecast today and tonight as we will be in the warm sector of a
clipper system passing well off to our north. Highs today will push
into the 40s, more typical for this time of year as compared to the
colder 30s we had on Sunday.

Tuesday the cold front will push southeast through the forecast
area. We will likely see some scattered rain showers develop along
and ahead of the front. The best chances to see showers will be in
the southeast towards jackson.

The cold air advection is strong in the wake of the front with delta
t's climbing to around 20c during the late afternoon. Moisture is
not great but we will likely see some light lake effect snow showers
developing. The snow showers will continue Tuesday night into
Wednesday morning with little to no accumulation.

Long term (Wednesday night through Sunday)
issued at 330 am est Mon nov 20 2017
precipitation will be mostly toward the end of the long term as high
pressure will be moving across the state during the middle of the
week. Both the GFS and ECMWF are in pretty good agreement with the
track and strength of low pressure as it crosses southern ontario
Friday. The trailing cold front will get some support aloft via a
short wave as it moves across northern lower. Highest pops will be
Friday evening just ahead of the cold front and across the northern
cwa. This is basically a rain event, although a few wet snowflakes
may mix in over the far northeastern CWA late Friday night and
Saturday morning. Behind the front, another shot of cold air will
flow south. However, the system looks similar to the one that just
moved through a couple of days ago. H8 temps fall to around -12c and
moisture is shallow. We include low chc pops for snow
showers... Mostly over the western cwa, but we don't expect much out
of this system Saturday afternoon and night.

Highs will be in the 40s Thursday through Saturday before dropping
into the 30s Sunday.

Aviation (for the 12z tafs through 12z Tuesday morning)
issued at 700 am est Mon nov 20 2017
the main weather feature the next 24 hours or through 12z Tuesday,
will be the wind. A strong pressure gradient will build into the
area today with an increase in wind slated for late morning.

Southwest winds (200-220 degrees) at 15 to 30 knots are expected
at the TAF sites after about 15z to 16z. The strongest winds will
be at kmkg where winds will gust in excess of 30 knots this
evening and tonight. Winds tonight aloft, at 1000-2000ft will
reach speeds of 40-55 knots. It will remain breezy through tonight
at all sites.

Otherwise,VFR conditions are expected through tomorrow morning
with cloud bases at or above 15,000ft.

Marine
Issued at 330 am est Mon nov 20 2017
with gale conditions forecast within the first period have opted to
drop the small craft advisory and upgrade to a gale warning. Gale
gusts may show up in the southern nearshore zones as early as late
morning or midday. The core of the gale conditions will occur
tonight with 35 to 45 knot gales from the southwest. Waves will peak
in the 9 to 13 foot range. Winds and waves will gradually settle
down from Tuesday into Wednesday. The gale warning runs through mid
morning on Tuesday, when we will likely need a small craft advisory
through midday on Wednesday.

Hydrology
Issued at 1145 am est Sun nov 19 2017
numerous streams and rivers across the southern half of lower
michigan will continue to show the affects of Friday's and
Saturday's rainfall. Rises are expected through the weekend before
rivers stabilize next week.

A quieter pattern is forecast through the thanksgiving day
period. Given current forecasts and river trends, all sites should
remain below flood criteria. Impacts are expected to remain minor
and immediately along streams and rivers.

Grr watches warnings advisories
Mi... None.

Lm... Gale warning until 10 am est Tuesday for lmz844>849.

Synopsis... Duke
short term... Duke
long term... 04
aviation... Duke
hydrology... Jam
marine... Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 4 mi37 min W 22 G 25 43°F 1013.2 hPa (-1.0)35°F
HLNM4 - 9087031 - Holland, MI 32 mi55 min SSE 18 G 21 1013.1 hPa
LDTM4 - 9087023 - Ludington, MI 50 mi49 min SW 5.1 G 13 41°F 32°F

Wind History for Holland, MI
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NW20
G27
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G25
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W21
NW17
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G27
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N7
NE5
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G21
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N12
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N12
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N29
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G36
NW27
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N25
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NW27
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G34
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G30
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G31
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SE6
G9
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G14
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G11
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G15
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G13
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G16
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G20
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G20
SW12
G15
SW12
G15
W10
NW14
G17
N10

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI3 mi42 minSW 1210.00 miPartly Cloudy42°F34°F73%1013.1 hPa
Fremont Municipal Airport, MI20 mi44 minSE 610.00 miFair32°F31°F97%1012.2 hPa

Wind History from MKG (wind in knots)
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Last 24hrNW10
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SW10W12SW13SW10SW12
1 day agoNE3N5N9N12N9
G17
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N7N14
G20
N14
G19
N12N11NW15
G23
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G27
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G25
NW12NW7NW15
G22
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G16
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G21
NW11NW13
G19
2 days agoSE10SE9SE9SE12SE11
G17
SE16SE10SE11
G19
SE10SE10SE13SE10SE8SE3S6SW13SW13SW10W6W7NW6N8N8NE4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

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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weather_mapweather_map weather_map

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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 numerious 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.