Monday, July24, 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 6:26AMSunset 9:16PM Monday July 24, 2017 4:54 PM EDT (20:54 UTC) Moonrise 6:52AMMoonset 9:13PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 330 Pm Edt Mon Jul 24 2017
Through early evening..Northwest winds 10 to 20 knots. Sunny. Waves 2 to 4 feet.
Tonight..North winds 5 to 10 knots veering southeast after midnight. Mostly clear in the evening then becoming clear. Waves 2 to 3 feet.
Tuesday..South winds 5 to 10 knots veering southwest late in the day. Sunny. Waves around 1 foot.
Tuesday night..South winds 5 to 15 knots. Mostly clear in the evening then becoming partly cloudy. Waves 1 to 2 feet.
Wednesday..South winds 10 to 20 knots. Partly Sunny. A slight chance of showers and Thunderstorms in the afternoon. Waves 1 to 3 feet.
LMZ847 Expires:201707250830;;769474 FZUS53 KGRR 241930 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 330 PM EDT Mon Jul 24 2017 For waters within five nautical miles of shore on Lake Michigan LMZ847-250830-

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 241927
afdgrr
area forecast discussion
national weather service grand rapids mi
327 pm edt Mon jul 24 2017
latest update...

synopsis short term long term marine

Synopsis
Issued at 327 pm edt Mon jul 24 2017
high pressure from canada will bring cooler and drier weather
through Tuesday. Another cold front moves through on Wednesday
with a chance of strong thunderstorms. Then fair weather returns
for the end of the week.

Short term (this evening through Wednesday night)
issued at 327 pm edt Mon jul 24 2017
the focus of the short term will be for Wednesday with convection
ahead of advancing cold front and amplifying upper trough possibly
including some strong to severe storms.

Sfc ridging holds on through early Wednesday with the earliest
chance for storms being across the northwest zones Wednesday
afternoon or evening. The front then sags through overnight with
strong sfc convergence being able to focus some storms. It appears
to be another overnight event when sfc based instability is
diurnally decreasing but also when low level jet is increasing.

Shear profiles and moisture transport would support the threat
for strong storms with heavy rain but we will have to watch trends
and see if the southward shift results in another miss for
southwest lower michigan.

Before then... We will have nice weather with low humidity. In
fact, with clear skies and winds going light, tonight could see
the coolest temperatures for the month of july to this point with
some of the cooler locations dropping down into the 40s.

Long term (Thursday through Monday)
issued at 327 pm edt Mon jul 24 2017
the digging mid level shortwave tracks eastward through lower mi on
Thursday. There will still be plenty of moisture and instability
around for showers and thunderstorms... Mainly for the first half
of the day. Overall this system has trended stronger from previous
runs so confidence is relatively high for numerous widespread
showers.

A secondary mid level shortwave tries to move for Friday. Currently
this system is shown to be weak and the moisture limited. Will hold
off on adding any showers or thunderstorms to the forecast.

Relatively stronger subsidence arrives for Saturday and persists
into Monday. Will keep the weather dry. The thermal trough is now
shown to push out slower. Thus any significant warming trend will
have to hold of until next week.

Aviation (for the 18z tafs through 18z Tuesday afternoon)
issued at 111 pm edt Mon jul 24 2017
scattered to broken clouds will persist through the mid afternoon
hours... Then skies will gradually clear out. The local MVFR
conditions will continue to diminish in coverage as surface
temperatures climb. The wind will be somewhat variable through the
afternoon.

With light winds and a dry airmass in place conditions are
forecasted to beVFR for Tuesday.

Marine
Issued at 327 pm edt Mon jul 24 2017
winds and waves will diminish this evening with more tranquil
conditions into Tuesday night before winds pick up again Tuesday
night followed by the chance of strong thunderstorms on
Wednesday.

Hydrology
Issued at 327 pm edt Mon jul 24 2017
a fair portion of the area has trended drier than normal over the
past 1 to 2 weeks. Late Wednesday into early Thursday appears to be
the only chance of appreciable rainfall over the next week. Local
amounts will depend greatly on the track of the potential
thunderstorm complex, though over an inch is possible where it does
track. This fairly progressive upper level shortwave trough and
associated surface front do not suggest much threat of excessive
rainfall.

Grr watches warnings advisories
Mi... Beach hazards statement until 8 pm edt this evening for miz037-
043-064-071.

Lm... Small craft advisory until 8 pm edt this evening for lmz844-845-
848-849.

Synopsis... Ostuno
short term... Ostuno
long term... Mjs
aviation... Mjs
hydrology... Cas
marine... Ostuno


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 4 mi45 min N 16 G 19 70°F 1016.3 hPa62°F
45161 6 mi55 min NNW 18 G 19 68°F 69°F1016.6 hPa (+0.0)
45029 23 mi35 min NNW 14 G 18 68°F 70°F3 ft1016.7 hPa60°F
HLNM4 - 9087031 - Holland, MI 32 mi55 min NW 15 G 16 68°F 1016.6 hPa (+0.6)
LDTM4 - 9087023 - Ludington, MI 50 mi55 min N 8.9 G 12 71°F 53°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 minNE 710.00 miPartly Cloudy79°F53°F41%1016.4 hPa
Fremont Municipal Airport, MI20 mi63 minNE 710.00 miMostly Cloudy77°F49°F38%1016.6 hPa

Wind History from MKG (wind in knots)
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Last 24hrW9NW7NW5N13N8N9N10N7N4N6N6N6N7N7N8N10N7N10
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1 day agoW11W10W8W8W4CalmCalmCalmS3SE3CalmCalmE6NW4S7S7S8SW4SW5SW8SW9W10W7NW6
2 days agoW7NW6NW3NE4CalmSE4SE5NE5S4E5E8CalmSE4SE5SE5SE3SE4S10W10W9W7NW4W8W5

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 (16,3,4,5)
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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.