Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Montague, MI

Version 3.4
What's New / NOTES
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 6:08AMSunset 9:16PM Saturday May 27, 2017 11:51 AM EDT (15:51 UTC) Moonrise 7:14AMMoonset 10:22PM Illumination 5% 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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LMZ872 Lake Michigan From Michigan City In To St. Joseph Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Sheboygan To Port Washington Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Port Washington To North Point Light Wi 5 Nm Offshore To Mid Lake- Lake Michigan From North Point Light To Wind Point Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Wind Point Wi To Winthrop Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Winthrop Harbor To Wilmette Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Wilmette Harbor Il To Michigan City In 5 Nm Offshore To Mid Lake- Lake Michigan From Whitehall To Pentwater Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Grand Haven To Whitehall Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Holland To Grand Haven Mi 5 Nm Offshore To Mid Lake- Lake Michigan From South Haven To Holland Mi 5 Nm Offshore To Mid Lake- Lake Michigan From St. Joseph To South Haven Mi 5 Nm Offshore To Mid Lake- 847 Am Cdt Sat May 27 2017 Sheboygan Wi To Pentwater Mi South...
Rest of today..Variable winds 5 to 10 kt. Patchy fog this morning. Waves 1 to 2 ft.
Tonight..East winds 5 to 10 kt increasing to 10 to 20 kt. Chance of showers and slight chance of Thunderstorms overnight. Waves 1 to 2 ft.
Sunday..East winds 10 to 15 kt backing to northwest 10 to 20 kt. Showers likely in the morning...then chance of showers in the afternoon. Waves 1 to 2 ft.
Sunday night..West winds 10 to 20 kt. Waves 1 to 2 ft building to 1 to 3 ft.
Monday..Southwest winds 10 to 20 kt becoming west 15 to 25 kt. Chance of showers in the afternoon. Waves 2 to 4 ft.
Monday night..West winds 10 to 20 kt. Waves 2 to 4 ft.
Tuesday..West winds 10 to 20 kt. Waves 2 to 4 ft.
Wednesday..West winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 1 to 3 ft.
LMZ872 Expires:201705272130;;286820 FZUS63 KLOT 271347 GLFLM OPEN LAKE FORECAST FOR LAKE MICHIGAN NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 847 AM CDT SAT MAY 27 2017 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN. WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED. .SYNOPSIS...WEAK LOW PRESSURE OF 29.9 INCHES OVER OHIO WILL CONTINUE TO MOVE EAST TO THE MID ATLANTIC REGION TODAY. ANOTHER LOW OF 29.7 INCHES WILL DEVELOP OVER OKLAHOMA THIS AFTERNOON...AND WILL MOVE NORTHEAST ACROSS ILLINOIS BY EARLY SUNDAY AND TO NEAR LAKE HURON BY SUNDAY EVENING. THIS LOW WILL MERGE WITH ANOTHER LOW OF 29.4 INCHES OVER ONTARIO SUNDAY NIGHT...AND WILL REMAIN NEARLY STATIONARY NEAR JAMES BAY INTO THE MIDDLE OF NEXT WEEK. LMZ080-669-671-673-675-777-779-870-872-874-876-878-272130-

7 Day Forecast for Marine Location Near Montague, MI
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location: 43.14, -87.03     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 271152
afdgrr
area forecast discussion
national weather service grand rapids mi
752 am edt Sat may 27 2017
latest update...

aviation

Synopsis
Issued at 330 am edt Sat may 27 2017
an area of low pressure will move from central illinois tonight
through southern portions of the lower peninsula on Sunday. Today
and tonight will be fairly dry with increasing chances for
precipitation on Sunday. Showers and thunderstorms will accompany
the passage of the low on Sunday. Some of the storms could be on the
strong side on Sunday. Rain showers remain in the forecast for
memorial day as an upper low moves toward the region. Not a wash out
of a holiday weekend, but we will see some rain. The driest day will
likely be today with the wettest occurring on Sunday. Highs will be
near normal for this time of year.

Short term (today through Monday)
issued at 330 am edt Sat may 27 2017
main focus in the forecast was on chances for precipitation,
beginning late tonight and persisting into Monday.

Shortwave ridging should keep us dry for the most part today after
some patches of light rain exit southern lower michigan this
morning. Much of tonight will be dry as well with a low slowly
moving our direction from the mid mississippi valley. Some light
rain showers are forecast by some of the short range models to be
pushing into western lower michigan around 12z on Sunday.

All of the models move a low through southern portions of the state
on Sunday. Sunday looks to be our best chance for rain with multiple
upper shortwave's affecting our area. Both showers and thunderstorms
look likely with convection allowing models like the 3kmnam showing
mucape values of 1000-2000 j kg. Simulated reflectivity shows rounds
of showers storms. 0-6km bulk shear values via the nam12 are
forecast to be in the 40-50kt range so organized storms with the
threat of some severe weather exists.

Sunday night and Monday an upstream upper low gradually works our
direction with some diurnal showers anticipated. So, showers will be
more prevalent on Monday with Sunday night forecast to be fairly
dry.

A cooling trend will be noted through the holiday weekend, with the
warmest day being today. Highs will reach the mid to upper 70s
today, cooling to around 70 on memorial day.

Long term (Monday night through Friday)
issued at 330 am edt Sat may 27 2017
seasonably cool and unsettled wx will continue Monday night through
midweek with scattered rain showers through Wednesday with the upper
trough axis in place over the great lakes region.

Showers will be enhanced from time to time by several shortwaves
that will rotate around the base of the trough axis. These diurnal
showers will be most prevalent during the afternoon and evening
hours.

Fair wx will finally return late in the week as the upper trough
axis moves east of our region and a sfc high pressure ridge builds
in. Temps by Thursday and Friday will return to near normal for this
time of year with high temps in the lower to perhaps middle 70's and
mins mainly in the 40's to lower 50's.

Aviation (for the 12z tafs through 12z Sunday morning)
issued at 744 am edt Sat may 27 2017
some light fog is occurring this morning at 12z, but it will be
short lived and lift rapidly in the next hour or so.VFR weather
is then expected the remainder of the day. We anticipate cumulus
clouds to develop this morning and persist into the afternoon with
bases around 4000-5000ft.

4000-5000ft ceilings may persist into tonight. Cannot rule out
some fog again late tonight, but have not included it in the tafs
just yet. Winds will be light, under 10 knots the next 24 hours.

Marine
Issued at 330 am edt Sat may 27 2017
a slack gradient will be in place today resulting in light winds and
limited waves out on lake michigan. Tonight into Sunday a low will
move through the southern great lakes with a veering wind from
southeast to southwest between this evening and Sunday evening. The
expectation is that winds and waves will remain below small craft
advisory criteria during these two forecast periods as well. Sunday
night and especially into Monday, winds and waves will pick up and a
sca may be needed for Monday. Southwest winds of 15-25 knots are
possible on Monday.

Hydrology
Issued at 217 pm edt Fri may 26 2017
river levels in the upper grand and the kalamazoo basins are
running above normal for late may while elsewhere the levels are
closer to normal. Rain totals generally under a half inch in
southern michigan Friday night, then across much of the area on
Sunday, will likely not be enough to produce flooding.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Duke
short term... Duke
long term... Laurens
aviation... Duke
hydrology... Cas
marine... Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 32 mi61 min N 3.9 G 3.9 49°F 48°F1013.7 hPa (+1.0)48°F
45161 36 mi31 min W 3.9 G 3.9 55°F 53°F1013.2 hPa
MKGM4 - Muskegon, MI 37 mi31 min NW 4.1 G 4.1 56°F 1013.2 hPa52°F
45029 43 mi31 min NW 3.9 G 3.9 55°F 53°F1013.4 hPa50°F
45013 44 mi72 min SSE 3.9 G 3.9 50°F 1013.4 hPa
MLWW3 - Milwaukee, WI 46 mi41 min SE 7 G 8 53°F
PWAW3 - Port Washington, WI 48 mi71 min S 2.9 G 4.1 56°F 1013.9 hPa

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI40 mi56 minWSW 410.00 miPartly Cloudy70°F54°F57%1012.8 hPa

Wind History from MKG (wind in knots)
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Last 24hrS6SW7SW6SW9SW10N5SW13
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NW4NW3CalmCalmSE4CalmCalmNE3CalmE3CalmN3N3NE4E3CalmSW4
1 day agoN7N8N10NE6NW9W75W6NW7NW5NW5NW6N6W6NW4W4NW3NW5CalmN4N5NE4CalmSW7
2 days agoNE9NE12E14NE13
G19
NE8NE7E5E6NE8NE12NE7NE7NE7NE8NE9NE9NE8NE8N8N6N8N5NE8N9

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 (11,2,3,4)
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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.