Friday, April3, 2020
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Marine Weather and Tides
Grand Ledge, 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 7:14AMSunset 8:08PM Friday April 3, 2020 12:26 PM EDT (16:26 UTC) Moonrise 1:42PMMoonset 3:59AM Illumination 81% Phase: Waxing Gibbous; Moon at 10 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 Fri Apr 3 2020
Rest of today..South winds 5 to 10 knots veering west late in the day. Mostly Sunny. Waves calm.
Tonight..Southeast winds 5 to 15 knots. Partly cloudy with a chance of rain showers. Waves 1 foot or less.
Saturday..Northwest winds 15 to 20 knots. Rain showers likely. Waves 2 to 4 feet.
Saturday night..North winds 10 to 20 knots. Partly cloudy with a slight chance of rain showers. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
Sunday..North winds 10 to 15 knots. Mostly Sunny. Waves around 1 foot.
Monday..South winds 5 to 15 knots. Mostly cloudy with a chance of rain showers. Waves 1 foot or less.
Tuesday..South winds 10 to 15 knots veering southwest late in the day. Mostly cloudy with a chance of rain showers. Waves 1 foot or less.
LMZ846 Expires:202004032100;;511752 FZUS53 KGRR 031506 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1105 AM EDT Fri Apr 3 2020 For waters within five nautical miles of shore on Lake Michigan LMZ846-032100-


7 Day Forecast for Marine Location Near Grand Ledge, MI
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location: 42.75, -84.75     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 031050 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 650 AM EDT Fri Apr 3 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 309 AM EDT Fri Apr 3 2020

- Well above normal temperatures today

- Scattered showers on Saturday

- Uncertainty with the thunderstorm potential next week

DISCUSSION. (Today through next Thursday) Issued at 309 AM EDT Fri Apr 3 2020

- Well above normal temperatures today

The low level thermal ridge moves in this afternoon with 925 mb temperatures shown to rise up to around 10 deg C. While we will see some clouds . we should be able to mix to this level. This will support temperatures reaching 60 degrees for much of the area. We will feature high temperatures today climbing a few degrees higher for much of the area as compared to Thursday.

- Scattered showers on Saturday

A cold front will track eastward through the state during the day on Saturday. This feature is shown to be weakening as it does. Most guidance shows the area of precipitation diminishing as it tracks through the state. Thus we will downplay the pops slightly over what we had in the forecast given the less certainty of measuring. Temperatures may also bump up a little higher than what we currently have in the forecast as the front will be weakening. We did bump up temperatures a few degrees for places like Lansing and Jackson.

- Uncertainty with the thunderstorm potential next week

The GFS is still supporting the potential for scattered to numerous storms starting Monday night and continuing into Tuesday night. Then the High Res Euro came in and is trending colder and further south with the temperatures and potential for storms. In fact a wintry mix would be possible for northern zones . up around Harrison and Baldwin for Tuesday night if the High Res Euro verifies. We will downplay the thunder risk somewhat and trend temperatures lower than what we previously had in the forecast. Trends will need to be monitored closely in the coming days.

AVIATION. (For the 12Z TAFS through 12Z Saturday morning) Issued at 645 AM EDT Fri Apr 3 2020

Low level moisture will remain limited today. This will act to limit the low cloud and fog risk today and into tonight. Thus we will feature VFR weather for the TAF sites in Southwest Lower MI. The pressure gradient remains relatively weak into tonight. Thus winds are forecasted to remain under 10 knots most of the time. Rain showers will be moving in from the west on Saturday and that will act to lower conditions beyond the valid period of this TAF issuance period.


MARINE. Issued at 309 AM EDT Fri Apr 3 2020

The pressure gradient remains relatively weak into the weekend so no headlines are planned Conditions also remain stable. which should act to keep the wave heights down.

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

SYNOPSIS . MJS DISCUSSION . MJS AVIATION . MJS MARINE . MJS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 78 mi56 min W 1.9 G 2.9 42°F 44°F1019 hPa38°F
MKGM4 - Muskegon, MI 90 mi26 min W 2.9 G 2.9 42°F 1020.5 hPa (-0.0)35°F
SBLM4 - Saginaw Bay Light #1, MI 91 mi26 min ENE 12 G 14 38°F 1020 hPa

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Capital Region International Airport, MI8 mi33 minNNE 610.00 miFair54°F26°F34%1020.2 hPa
Charlotte, Fitch H Beach Airport, MI13 mi31 minNE 510.00 miFair55°F21°F28%1019 hPa
Mason, Mason Jewett Field Airport, MI21 mi31 minNNE 610.00 miFair52°F22°F31%1019.6 hPa
Ionia County Airport, MI21 mi31 minE 710.00 miFair52°F23°F33%1019.6 hPa

Link to 5 minute data for KLAN

Wind History from LAN (wind in knots)
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Last 24hrN8
G16
W543NW5NW5NW7----CalmW5W6W6W3CalmNW3CalmCalmCalmCalmNE3N4NE4NE6
1 day agoN7N7N83N6N5N4NW3W3CalmW3W6W5W6W5NW4NW4W4NW5W4NW5NW6NW6N8
2 days agoNE8NE8NE7N11NE10NE13
G18
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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 (12,3,4,5)
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Ground Weather Radar Station Detroit, 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.