Sunday, June25, 2017 L-36.com


Marine Weather and Tides
Beechwood, 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 6:06AMSunset 9:28PM Sunday June 25, 2017 4:55 AM EDT (08:55 UTC) Moonrise 6:58AMMoonset 9:53PM 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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LMZ846 Holland To Grand Haven Mi- 347 Am Edt Sun Jun 25 2017
.small craft advisory in effect through Monday evening...
Today..West winds 15 to 20 knots. Mostly Sunny. A chance of showers and a slight chance of Thunderstorms in the afternoon. Waves 3 to 5 feet.
Tonight..West winds 15 to 25 knots. Partly cloudy with a chance of showers. Waves 2 to 3 feet building to 4 to 6 feet after midnight.
Monday..Northwest winds 20 to 25 knots. Mostly cloudy. A slight chance of showers until midday, then a chance of showers and a slight chance of Thunderstorms in the afternoon. Waves 4 to 7 feet.
Monday night..Northwest winds 10 to 20 knots. Partly cloudy. A slight chance of showers in the evening. Waves 4 to 6 feet.
LMZ846 Expires:201706251530;;785334 FZUS53 KGRR 250747 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 347 AM EDT Sun Jun 25 2017 For waters within five nautical miles of shore on Lake Michigan LMZ846-251530-

7 Day Forecast for Marine Location Near Beechwood, MI
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location: 42.77, -86.21     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 250730
afdgrr
area forecast discussion
national weather service grand rapids mi
330 am edt Sun jun 25 2017
latest update...

synopsis short term long term marine

Synopsis
Issued at 330 am edt Sun jun 25 2017
cool weather is expected today through Tuesday. Temperatures will
likely stay in the 60s for highs both today and especially on
Monday. We will warm slightly into the lower 70s for Tuesday.

Normal high temperatures for this time of year are in the lower
80s, so we will be well below normal. Scattered showers are
expected today through Monday with an isolated thunderstorm
possible as well. Any storms should mainly occur during the
afternoon hours.

Short term (today through Tuesday)
issued at 330 am edt Sun jun 25 2017
fall like pattern is expected through the short term with
northwest upper flow. A shortwave is affecting the area at present
and will touch off scattered showers and possibly an isolated
storm through the morning hours. Another shortwave will dive
through the northwest flow on Monday. Given the cold airmass
aloft, there will likely be a diurnal flare to the precipitation
both today and on Monday. Monday may tend to overperform in regard
to precipitation as the upper shortwave will be coincident with
max heating and the thermal trough over lake michigan. Delta t's
on Monday will be near 13 degrees c, so we may see lake generated
showers as well.

We should dry out for later Monday night into Tuesday as ridging
begins to build in both at the surface and aloft. Bottom line, its
going to be a cool period with some showers around through Monday
evening.

Long term (Tuesday night through Saturday)
issued at 330 am edt Sun jun 25 2017
surface high pressure moving by to the south of michigan Tuesday
night into Wednesday should result in dry weather for the area. A
low pressure system is then expected to pass over michigan and drape
a front across the region, bringing showers and thunderstorms Monday
night into Tuesday. Another low pressure system will then move from
southwest to northeast along the front, accompanied by more rain and
thunderstorms Friday and Friday night. If the focus of the heavy
rain stretches across lower michigan, we could see areal and river
flooding by the end of the week.

Temperatures will be warming through the long term. They will be
below normal into mid week and near normal for the second half of
the week. Normal highs are around 80 degrees and normal lows are in
the upper 50s.

Aviation (for the 06z tafs through 06z Sunday night)
issued at 153 am edt Sun jun 25 2017
mostlyVFR conditions expected through Sunday night. Showers and
thunderstorms will be possible again Sunday afternoon and evening.

Winds will be under 10 knots overnight and pick up out of the
west at 10 to 15 knots and gust over 20 knots at times Sunday
afternoon.

Marine
Issued at 330 am edt Sun jun 25 2017
small craft advisory and beach hazards statement look marginal
today, but will leave them in effect and see how things play out.

Waves have come up overnight in a burst of westerly winds behind
the mid level shortwave. Port sheldon for instance has 5 footers
as of 300am. The day will likely at least start with higher waves.

There may be a bit of a lull in the waves late this afternoon and
evening, but winds and waves should increase tonight into Monday.

In fact, waves on Monday look to be the highest we have seen in
the last couple of days. Solid 5 footers with some 6's look
possible in a cold air advection regime. Extended the marine
headlines through Monday evening.

Hydrology
Issued at 1231 pm edt Sat jun 24 2017
the chippewa river at mount pleasant crested at 14.77 feet Friday
night, about 10 inches below the record flooding of 15.58 feet in
september 1986. All river forecast points in our area have crested
as the water is being routed down through the muskegon and saginaw
river systems. Scattered showers Saturday through Monday should
have little effect on the rivers. Heavy rain potential may return
during the latter part of the upcoming week.

Grr watches warnings advisories
Mi... Beach hazards statement through Monday evening for miz043-050-
056-064-071.

Lm... Small craft advisory until midnight edt Monday night for
lmz844>848.

Synopsis... Duke
short term... Duke
long term... 63
aviation... 63
hydrology... Cas
marine... Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 0 mi37 min W 18 G 23 60°F 1015.2 hPa
45029 10 mi15 min WNW 18 G 21 60°F 68°F6 ft1015.4 hPa50°F
SVNM4 - South Haven, MI 26 mi25 min W 18 G 21 61°F
45168 27 mi25 min WNW 16 G 21 61°F 65°F6 ft1016.1 hPa49°F
45161 29 mi35 min W 19 G 23 59°F 66°F5 ft1014.8 hPa
MKGM4 - Muskegon, MI 32 mi25 min WNW 19 G 21 59°F 1015.2 hPa52°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi65 min NW 19 G 23 58°F 61°F3 ft1016 hPa (+0.0)50°F

Wind History for Holland, MI
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SE12
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI6 mi62 minW 9 G 1710.00 miA Few Clouds59°F46°F62%1015.8 hPa

Wind History from BIV (wind in knots)
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Last 24hrW8NW7NW6NW7NW10NW9NW11W9W7
G17
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NW11NW8W4W5SW4SW3SW3W8W10W11
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1 day agoSW15
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W95
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NW4W5NW75NW11NW11
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NW86
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2 days agoS8S10S8SW16
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SW12SW8SW7SW10S6S6SW9SW12
G21
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G25
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G24

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 (4,6,7,8)
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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.