Friday, May26, 2017 L-36.com


Marine Weather and Tides
Grand Haven, 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 6:09AMSunset 9:15PM Friday May 26, 2017 3:27 AM EDT (07:27 UTC) Moonrise 6:15AMMoonset 9:15PM Illumination 1% Phase: New Moon; 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- 916 Pm Edt Thu May 25 2017
Rest of tonight..Northwest winds 5 to 15 knots. Partly cloudy. Waves 2 to 4 feet.
Friday..West winds 5 to 10 knots. Partly Sunny. A slight chance of showers in the afternoon. Waves around 1 foot.
Friday night..Northeast winds 5 to 10 knots veering east after midnight. Mostly cloudy in the evening then becoming partly cloudy. A chance of showers. Waves less than 1 foot.
Saturday..Northeast winds 5 to 10 knots backing northwest. Mostly Sunny. Waves less than 1 foot.
LMZ846 Expires:201705260915;;209174 FZUS53 KGRR 260116 NSHGRR NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE GRAND RAPIDS MI 916 PM EDT THU MAY 25 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ846-260915-

7 Day Forecast for Marine Location Near Grand Haven, MI
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location: 43.05, -86.36     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 260341
afdgrr
area forecast discussion
national weather service grand rapids mi
1141 pm edt Thu may 25 2017
latest update...

aviation

Synopsis
Issued at 306 pm edt Thu may 25 2017
mostly near normal to cooler than normal temperatures expected for
the next week. There will be a couple of shots for light rainfall
this weekend and again late next week... Though no significant
impacts from weather are expected.

Short term (this evening through Saturday night)
issued at 306 pm edt Thu may 25 2017
european and GFS models continue to show differences in the effects
on lower michigan of a weak low moving through the ohio valley
Friday Friday night. Tend to lean more toward drier solution of the
euro than the wetter solution of the GFS as the euro has been a bit
more consistent with precipitation placement. The european also
continues to keep the precipitation much closer to the low than the
gfs does and this seems to make a little more sense. For now have
kept chance pops in on Friday night... But confidence is
increasing in the possibility of removing these from the forecast.

Saturday looks fairly nice and is still on track to be the nicest
day of the weekend with temperatures in the mid to upper 70s.

Long term (Sunday through Thursday)
issued at 306 pm edt Thu may 25 2017
the initial cold front shortwave preceding our next upper low is
shown to move through the region on Sunday. Timing of this feature
is a bit unclear but if it slips through in the morning the
afternoon could turn out nice (especially in western sections) in
the wake of departing showers and tstms. Highs in the low to mid 70s
are expected on Sunday with the colder air mass still upstream.

On memorial day the next upper low trough will be digging into the
region. Cold advection pattern and cyclonic flow may result in some
afternoon early evening diurnal showers, although at this time it
looks like those would be mainly north of i-96 on the holiday.

Slightly cooler highs near 70 expected.

Confidence is high that Tuesday and Wednesday will be unseasonably
cool and breezy days with highs only 60-65. The upper trough will be
firmly entrenched over the great lakes region with h8 temps only
around 2-5c. Shortwaves swinging through base of the longwave trough
will bring occasional rain showers.

The shower threat will end and temperatures will moderate Thursday
as the upper trough begins to lift out.

Aviation (for the 06z tafs through 06z Friday night)
issued at 1138 pm edt Thu may 25 2017
a mix ofVFR MVFR conditions is anticipated overnight with MVFR
due to patchy low clouds. Conditions will likely deteriorate a bit
to primarily MVFR with some ifr possible during the early to mid
morning hours Friday due to patchy low clouds and fog.

Conditions will then gradually improve toVFR by midday withVFR
conditions Friday afternoon. Conditions will then slowly
deteriorate to MVFR late Friday evening as some low clouds move
back in along with development of some scattered rain showers.

Marine
Issued at 306 pm edt Thu may 25 2017
light winds and small waves are expected for the next few days. Some
fog may be possible at times near shore... Especially Friday morning.

Hydrology
Issued at 158 pm edt Thu may 25 2017
an active pattern will set up across the central u.S. Over the
holiday weekend. The heaviest rainfall is expected to stay south
of lower michigan, stretching from texas, northeast through the
ohio valley. Lower michigan seems to stay north of the heaviest
precipitation amounts. Any appreciable precipitation should
remain light and be rather short in duration.

Despite low risk for additional flooding, elevated river levels
over southern portions of lower michigan will remain sensitive to
heavier rainfall. Any deviation in the current forecast could
impact river levels. Anyone planning activity on or near rivers
this weekend should pay attention to updated forecasts.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Maczko
short term... Maczko
long term... Meade
aviation... Laurens
hydrology... Jam
marine... Maczko


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45161 9 mi27 min NNW 9.7 G 12 50°F 51°F1 ft1007.5 hPa (+1.4)
45029 11 mi27 min N 9.7 G 14 50°F 53°F2 ft1007.8 hPa (+1.6)47°F
MKGM4 - Muskegon, MI 12 mi27 min NNW 12 G 13 50°F 1007.8 hPa (+1.5)49°F
HLNM4 - 9087031 - Holland, MI 21 mi39 min NW 9.9 G 11 51°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi37 min NNW 7.8 G 9.7 47°F 45°F2 ft1008.2 hPa (+0.9)47°F
SVNM4 - South Haven, MI 45 mi27 min WNW 7 G 7 51°F
45168 45 mi27 min NNW 5.8 G 9.7 51°F 54°F3 ft1008.3 hPa (+1.2)46°F
LDTM4 - 9087023 - Ludington, MI 62 mi39 min NNW 1.9 G 2.9 51°F 48°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI10 mi32 minW 410.00 miFair51°F48°F92%1007.3 hPa

Wind History from MKG (wind in knots)
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Last 24hrNE8NE8N8N6N8N5NE8N9N7N8N10NE6NW9W75W6NW7NW5NW5NW6N6W6NW4W4
1 day agoN3NE7NE8N8NE7NE8NE8NE9NE9NE12E14NE13
G19
NE8NE7E5E6NE8NE12NE7NE7NE7NE8NE9NE9
2 days agoS10S6S8S5S6S8S14S12SW10SW12SW10SW10S9S7S6SE3NE5NE3N5NE4E3NE4NE4NE5

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 (3,6,7,8)
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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.