Friday, July28, 2017 L-36.com


Marine Weather and Tides
Grand Haven, 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 6:30AMSunset 9:12PM Friday July 28, 2017 1:02 PM EDT (17:02 UTC) Moonrise 11:21AMMoonset 11:22PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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- 1045 Am Edt Fri Jul 28 2017
Rest of today..Northeast winds 10 to 20 knots. Mostly Sunny. Waves 1 to 3 feet.
Tonight..Northeast winds 10 to 15 knots becoming around 10 knots toward daybreak. Mostly clear in the evening then becoming clear. Waves around 1 foot.
Saturday..Northeast winds 10 to 15 knots. Sunny. Waves 1 to 2 feet.
Saturday night..Northeast winds 5 to 10 knots. Mostly clear in the evening then becoming clear. Waves 1 to 2 feet.
LMZ846 Expires:201707282115;;962567 FZUS53 KGRR 281445 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1045 AM EDT Fri Jul 28 2017 For waters within five nautical miles of shore on Lake Michigan LMZ846-282115-

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 281136
afdgrr
area forecast discussion
national weather service grand rapids mi
736 am edt Fri jul 28 2017
latest update...

aviation

Synopsis
Issued at 317 am edt Fri jul 28 2017
a few showers are possible this afternoon then fair and dry
weather will rule over the weekend as high pressure from canada
dominates the weather into early next week.

Short term (today through Sunday)
issued at 317 am edt Fri jul 28 2017
only forecast issue in the near term is for pops today as upper
low passes through and steepening lapse rates could touch off a
few showers and storms from late morning through the afternoon.

The mesoscale models show scattered showers developing this
morning across northern lower michigan and drifting southwest
through the afternoon. So the area of pops for today has been
expanded from the eastern zones into the central and western
forecast area.

The upper low dives southeast with heights rebounding this evening
and showers should also die off quickly due to this and the loss
of diurnal instability. The rest of the forecast period looks dry
and comfortable as upper heights rise and canadian surface high
builds into the central great lakes.

Long term (Sunday night through Thursday)
issued at 317 am edt Fri jul 28 2017
high pressure will continue to dominate the wx pattern Sunday night
and for the early to middle portion of next week bringing fair wx
with seasonable temps.

A slow moving frontal boundary will bring potential for a few
showers and thunderstorms Wednesday through Wednesday night into
early Thursday. However moisture with this system looks quite
limited and significant rainfall is not anticipated.

Another ridge of high pressure will build in behind that system and
bring fair wx Friday into next weekend. Temperatures will continue
to average rather close to normal through the long range fcst
period.

Aviation (for the 12z tafs through 12z Saturday morning)
issued at 736 am edt Fri jul 28 2017
vfr conditions will prevail through Saturday afternoon. Some
isolated showers and thunderstorms are possible this afternoon but
the chances are low enough to leave out of the forecast for now.

Northeast winds will gust to near 20 knots this afternoon then
decrease below 10 knots overnight.

Marine
Issued at 317 am edt Fri jul 28 2017
winds and waves will increase today. Big and little sable points
will once again see waves near 4 feet in northerly flow as will
the nearshore waters near and south of south haven.

Hydrology
Issued at 100 pm edt Thu jul 27 2017
one to two inches of rain fell across a fair portion of central
michigan (along the us-10 and m-20 corridors) Wed and Wed night.

Given the mostly dry conditions over the last two or three weeks,
this rain was effectively captured by the soil and river rises
will be limited. The chance for substantial rainfall over the next
week is very low.

Grr watches warnings advisories
Mi... None.

Lm... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45161 9 mi43 min NE 7.8 G 9.7 73°F 69°F1 ft1016.4 hPa
45029 11 mi23 min ENE 12 G 16 73°F 70°F2 ft1015.6 hPa57°F
MKGM4 - Muskegon, MI 12 mi33 min E 8 G 14 79°F 1015.6 hPa58°F
HLNM4 - 9087031 - Holland, MI 21 mi45 min NNE 12 G 17 76°F 1015.4 hPa
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi73 min NNE 12 G 14 69°F 71°F2 ft1016.2 hPa (+0.6)
SVNM4 - South Haven, MI 45 mi33 min NE 12 G 17 75°F
45168 45 mi33 min NE 7.8 G 12 72°F 68°F2 ft1015.3 hPa58°F
LDTM4 - 9087023 - Ludington, MI 62 mi45 min N 4.1 G 8 76°F 60°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI10 mi68 minE 12 G 2010.00 miPartly Cloudy77°F57°F52%1016.2 hPa

Wind History from MKG (wind in knots)
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Last 24hrNE11NE9N7
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NE6N8N11N9NE8NE8NE5NE6NE5NE4NE3NE4N7N8NE6E8E10
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1 day agoSW12S7S10S14S9SW4CalmW4SE7S3CalmSE5CalmCalmE3CalmNW6NE6E4E4NE4NE8N6NE10
2 days agoSW10SW13W10W9W75S7S4W3SW3S4CalmSE5SE6S5S9S9S7S7S6S6S10S11S12
G18

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 (13,3,4,5)
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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.