Sunday, July5, 2020
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Marine Weather and Tides
Grand Haven, MI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:10AMSunset 9:29PM Sunday July 5, 2020 11:32 AM EDT (15:32 UTC) Moonrise 9:16PMMoonset 5:25AM Illumination 100% Phase: Full Moon; Moon at 15 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- 1105 Am Edt Sun Jul 5 2020
Rest of today..Northwest winds 5 to 10 knots. Mostly Sunny. Waves less than 1 foot.
Tonight..Northwest winds around 5 knots veering northeast toward daybreak. Partly cloudy. Waves less than 1 foot.
Monday..Southwest winds around 5 knots veering west. Sunny. Waves less than 1 foot.
Monday night..Northwest winds around 5 knots backing south toward daybreak. Mostly clear. Waves less than 1 foot.
Tuesday..Southwest winds 5 to 10 knots. Sunny. Waves 1 foot or less.
Wednesday..Southwest winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Thursday..Southwest winds 10 to 15 knots. Mostly Sunny with a chance of rain showers. Waves 1 to 2 feet.
LMZ846 Expires:202007052100;;359730 FZUS53 KGRR 051505 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1105 AM EDT Sun Jul 5 2020 For waters within five nautical miles of shore on Lake Michigan LMZ846-052100-


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 051117 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 717 AM EDT Sun Jul 5 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 216 AM EDT Sun Jul 5 2020

- Above normal temperatures through next week

- Weak chances of precipitation through early next week

- Next chance for widespread showers late next week.

DISCUSSION. (Today through next Saturday) Issued at 330 AM EDT Sun Jul 5 2020

- Above normal temperatures through next week

High pressure will continue to dominate the weather pattern through next week. This will allow for H8 temps in the 16c -20c range and will bring low to mid 90s across south central and south western Michigan. These Maximum temperatures could be up to 10 to 15 degrees above normal.

The nighttime lows as well will be warm, with lows dropping only to the low 70s.

- Weak chances of precipitation through early next week

While overall there will be high pressure which will stifle instability, there will still be shortwaves moving through the upper atmosphere, which, given the high dewpoints and the warmer than normal temperatures will allow for a slight chances of showers, mainly on any lake breeze boundary that might form.

- Next chance for widespread showers late next week.

The break in weather will end late in the week. The heat builds in again late next weekend. The GFS is showing h8 temps pushing 30c. That would send surface temps toward 100 a week from Monday. Impacts from the heat will start to ramp up as we go through next week and (if the GFS is correct) the week after.

AVIATION. (For the 12Z TAFS through 12Z Monday morning) Issued at 717 AM EDT Sun Jul 5 2020

Shallow patchy fog with visbys in the 2 to 4 mile range will quickly mix out this morning. VFR conditions will prevail through Sunday night. There could be some isolated thunderstorms this afternoon but the chances are low enough to leave out of the TAFs.

MARINE. Issued at 216 AM EDT Sun Jul 5 2020

No marine hazards expected for the next several days. Waves will generally be a foot or less through Monday.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . None.

SYNOPSIS . Ceru DISCUSSION . Ceru AVIATION . Ostuno MARINE . Ceru


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45029 11 mi22 min N 1.9 G 3.9 72°F 70°F1016.2 hPa67°F
MKGM4 - Muskegon, MI 12 mi22 min N 6 G 7 74°F 1015.8 hPa68°F
HLNM4 - 9087031 - Holland, MI 21 mi50 min NNW 5.1 G 6 71°F 1016.2 hPa69°F
45168 45 mi22 min W 5.8 G 7.8 75°F 76°F1016.3 hPa67°F
SVNM4 - South Haven, MI 45 mi32 min WNW 5.1 G 6 74°F
LDTM4 - 9087023 - Ludington, MI 62 mi50 min WSW 1 G 5.1 74°F 68°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI10 mi37 minWNW 810.00 miPartly Cloudy84°F66°F55%1016.1 hPa

Link to 5 minute data for KMKG

Wind History from MKG (wind in knots)
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Last 24hrS64W10NW9W8W10NW9W7NW7NW5NW3CalmCalmCalmCalmCalmCalmCalmE3CalmCalmCalmW4W8
1 day agoW8W7W9W9W13
G17
W9NW8NW8NW6NW5W4W4N4NE7NE6NE5NE5NE4NE7NE7NE5E7E11E8
2 days agoNW7--4W10NW10NW9NW9NW11NW7NW5NW5NW3N3CalmCalmCalmCalmNW3SE3CalmCalmCalmW3NW5

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of GreatLakes    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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 numerous 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.