Tuesday, July17, 2018 L-36.com


Marine Weather and Tides
Muskegon, MI

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:19AMSunset 9:22PM Tuesday July 17, 2018 1:55 AM EDT (05:55 UTC) Moonrise 10:44AMMoonset 11:35PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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- 954 Pm Edt Mon Jul 16 2018
Rest of tonight..Northwest winds 5 to 10 knots increasing to 10 to 20 knots late at night, then veering north toward daybreak. Clear. Waves 1 foot or less building to 2 to 4 feet after midnight.
Tuesday..North winds 10 to 15 knots increasing to 15 to 25 knots. Sunny. Waves 2 to 4 feet.
Tuesday night..North winds 10 to 20 knots veering northeast 5 to 10 knots toward daybreak. Clear. Waves 2 to 3 feet subsiding to around 1 foot after midnight.
Wednesday..Northeast winds 5 to 15 knots. Sunny. Waves around 1 foot.
LMZ847 Expires:201807170915;;592836 FZUS53 KGRR 170154 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 954 PM EDT Mon Jul 16 2018 For waters within five nautical miles of shore on Lake Michigan LMZ847-170915-

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 170350
afdgrr
area forecast discussion
national weather service grand rapids mi
1150 pm edt Mon jul 16 2018
latest update...

aviation

Synopsis
Issued at 330 pm edt Mon jul 16 2018
a cold front will continue to progress south through the lower
peninsula this afternoon exiting the state towards midnight. A
noticeably cooler and less humid air mass will push into the state on
north winds. Dew points in the 50s on Tuesday and in some cases the
40s on Wednesday will feel very comfortable by mid summer standards.

A few showers and storms this evening will come to an end as the
front exits the area. Dry weather is then forecast from overnight
into Thursday night. High pressure will be centered right over the
state on Wednesday. A more widespread rain is forecast for Friday
through Sunday as an upper low moves through the great lakes.

Short term (this evening through Wednesday night)
issued at 330 pm edt Mon jul 16 2018
the main weather in the short term occurs this evening and is
associated with the passage of a cold front. The front is situated
from near saginaw bay to near holland at 300pm. Showers and storms
are occurring both in the warm sector ahead of the front and along
the front itself. A surge of stabilizing air off lake michigan has
ended the precipitation threat for areas west of u.S. Highway 131.

The surge off the lake is also weakening convergence along the
boundary. The bottom line is we will see scattered showers and
storms in the eastern half of the forecast area for another 2-4
hours with the precipitation ending after that time frame. Cooler
and drier air will surge in from the north overnight.

The remainder of the short term looks dry from Tuesday through
Wednesday night as high pressure settles in from the northwest.

Skies are expected to be mainly clear for Tuesday into Wednesday.

Long term (Thursday through Monday)
issued at 330 pm edt Mon jul 16 2018
the long term continues to look more active as an upper low drifts
into the great lakes from the northern plains. Chances for showers
and thunderstorms will develop Thursday night with the best chances
on Friday and Saturday. There are still differences in temps of
depth and position of the low between the operational ECMWF and gfs.

Will not try to differentiate between the two at this point and
stick with the message of a more widespread rain occurring in the
low term. Short wave ridging tries to push in for Monday which
should bring drier weather. Highs in the long term look to be near
to slightly below normal.

Aviation (for the 06z tafs through 06z Tuesday night)
issued at 1140 pm edt Mon jul 16 2018
vfr conditions will continue at all the terminals through Tuesday
evening. Northwest winds will increase to 10-15 kts with gusts to
around 20 kts from midday Tuesday through early Tuesday evening
before subsiding. Sct fair weather cumulus will develop around
midday Tuesday at most of the terminals except at kmkg where skies
should remain mostly clear. Skies will clear at all the terminals
Tuesday night.

Marine
Issued at 330 pm edt Mon jul 16 2018
winds will begin to increase tonight in a north flow behind the cold
front. Winds are expected to increase to 15-25 knots tonight which
will build waves into the 3 to 5 foot range south of grand haven.

There is a lull expected in the winds waves Tuesday morning before
increasing once again Tuesday afternoon and evening. We have opted
to issue a small craft advisory and beach hazards statement from 06z
tonight through 06z Tuesday night. Waves on Tuesday afternoon and
evening will work there way down the shore as the stronger north
winds funnel down the coast. Given winds at 1000ft of 22-24 knots in
the south haven bufkit data, there may be some waves that reach the
6 foot mark at the buoys. The namnest is the model that usually
depicts the wind fields in these events the best. Fairly flat
conditions are expected on lake michigan for Wednesday as Thursday
with high pressure situated across the area.

Fire weather
Issued at 330 pm edt Mon jul 16 2018
scattered heavy rain occurred yesterday, with a few locations
receiving 3+ inch amounts. That type of rain was very localized
though. Today, much of the same is occurring with some areas having
seen zero rainfall. Locations along the lakeshore north of saugatuck
and many areas along interstate 96 have seen little to no rain. Fire
danger remains high in most areas. The cold front and showers and
storms associated with it will move southeast out of the area this
evening. Dry weather is forecast from tonight into Thursday night
behind the front as high pressure settles into the area. So, areas
that have remained dry will continue to see a high fire danger into
the end of the work week as dry weather and warm temperatures are
expected.

Hydrology
Issued at 139 pm edt Mon jul 16 2018
river levels showed little to no response to spotty rainfall
received last evening through early Monday afternoon, even near
kalamazoo and near rockford where the heaviest rain fell.

Scattered showers and thunderstorms Monday afternoon and evening
will be most numerous east of grand rapids. Storms will be capable
of torrential rain, with rainfall rates of 1-3 inches per hour,
possibly higher. Storm motion to the east at 20 mph is faster than
yesterday, but still supports the threat for localized flooding.

Mainstem river flooding (grand, muskegon, kalamazoo) is not
expected, but rapid rises will be possible on smaller creeks and
streams if heavy rain persists long enough over the smaller river
basins.

Dry weather is expected Monday night through Thursday. A wetter
pattern will develop over the area Friday through Sunday as a large
area of low pressure slowly moves through the area.

Grr watches warnings advisories
Mi... Beach hazards statement through late Tuesday night for miz056-
064-071.

Lm... Small craft advisory until 2 am edt Wednesday for lmz844>846.

Synopsis... Duke
short term... Duke
long term... Duke
aviation... Laurens
fire weather... Duke
hydrology... Hlo
marine... Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 4 mi35 min WNW 5.1 G 7 73°F 1013.7 hPa71°F
45161 6 mi35 min W 9.7 G 9.7 73°F 73°F1 ft
45029 23 mi25 min WSW 9.7 G 12 73°F 75°F1 ft1013.9 hPa68°F
HLNM4 - 9087031 - Holland, MI 32 mi43 min W 6 G 7 74°F 1014.2 hPa73°F
LDTM4 - 9087023 - Ludington, MI 50 mi37 min NW 2.9 G 6 73°F 63°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI3 mi60 minWSW 310.00 miFair66°F61°F84%1013.9 hPa
Fremont Municipal Airport, MI20 mi76 minN 010.00 miFair59°F55°F89%1013.9 hPa

Wind History from MKG (wind in knots)
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Last 24hrCalmCalmCalmS3CalmCalmSW5SW5SW7SW8SW9W7W11
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1 day agoCalmCalmCalmCalmCalmCalmSE4SE44CalmS5SW8
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W8SW7W7CalmCalmSW5CalmCalmCalmCalm
2 days agoSW12SW6CalmCalmW3SW3CalmS6SW5W6SW3SW8SW8SW9SW8SW4W6SW5SW6SW5CalmCalmCalmCalm

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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GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Grand Rapids, MI (1,6,7,8)
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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 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.