Wednesday, April1, 2020
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Marine Weather and Tides
Roosevelt Park, 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 7:23AMSunset 8:13PM Wednesday April 1, 2020 4:21 AM EDT (08:21 UTC) Moonrise 11:35AMMoonset 2:27AM Illumination 58% Phase: First Quarter Moon; Moon at 8 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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LMZ847 Grand Haven To Whitehall Mi- 405 Am Edt Wed Apr 1 2020
Early this morning..North winds 5 to 10 knots. Cloudy. Patchy drizzle. Waves 1 foot or less.
Today..North winds 5 to 15 knots. Mostly cloudy. Patchy drizzle. Waves around 1 foot.
Tonight..North winds 5 to 10 knots veering northeast toward daybreak. Partly cloudy. Waves around 1 foot.
Thursday..Southeast winds 5 to 10 knots veering west late in the day. Mostly Sunny. Waves less than 1 foot.
Thursday night..North winds 5 to 15 knots veering southeast after midnight. Partly cloudy. Waves 1 foot or less.
Friday..Southeast winds 10 to 15 knots. Partly Sunny. Waves around 1 foot.
Saturday..East winds 10 to 15 knots backing northwest. Rain showers likely. Waves 1 to 2 feet.
Sunday..North winds 10 to 15 knots backing northwest. Mostly Sunny with a chance of rain showers. Waves 1 foot or less.
LMZ847 Expires:202004012000;;394176 FZUS53 KGRR 010805 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 AM EDT Wed Apr 1 2020 For waters within five nautical miles of shore on Lake Michigan LMZ847-012000-


7 Day Forecast for Marine Location Near Roosevelt Park, MI
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location: 43.22, -86.36     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 010728 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 328 AM EDT Wed Apr 1 2020

LATEST UPDATE . Synopsis/Discussion/Marine

SYNOPSIS. Issued at 306 AM EDT Wed Apr 1 2020

- Sprinkles/light showers possible today

- Above normal temperatures starting Thu

- Showers with the front Sat into Sun

- Storms possible early next week


DISCUSSION. (Today through next Tuesday) Issued at 306 AM EDT Wed Apr 1 2020

- Sprinkles/light showers possible today

Models show the low level moisture remaining abundant today. In addition the flow will be confluent. There has been some returns showing up on radar around Lower MI early this morning. Based on this and some high res guidance showing spotty showers through the day . we will feature a risk for some light precipitation/drizzle today. Conditions are forecasted to dry out tonight as the ridge starts to move in.

- Above normal temperatures starting Thu

A gradual warmup will occur for the end of the week and into the weekend. Low level thermal/thickness fields support surface high temperatures rising into the 60s by Friday and perhaps as soon as Thursday Although a cold front moves in for the weekend. the thermal advection behind it weakens with time to the actual surface temperature change may still allow for above normal daytime high temperatures. Warm air advection then resumes for early next week and the potential for values well into the 60s will be on the increase.

- Showers with the front Sat into Sun

The cold front that moves in Saturday slows down as it gradually weakens overhead. Enough moisture and lift are shown to exist along the frontal zone to still warrant showers Saturday into Saturday night. The latest High Res Euro is now showing an inverted surface trough along the stalled out front along the MI/IN border to start the day. There is also a weak mid level wave riding along the frontal zone If this happens. we could start the day off wet Sunday. We will feature low pops on Sunday to account for this potential. Right now the potential for storms over the weekend looks low.

- Storms possible early next week

Some differences in the models exists with the risk for storms early next week. The GFS rushes in elevated instability on Monday and keeps the instability around through Wednesday. The High Res Euro has a narrower window showing the risk for storms on the increase Monday night and keeping the potential going into Tuesday night. We will feature a forecast closer to the High Res Euro as it is more in line with what we currently have out. We can add the risk for thunder on Monday if better model agreement exists with later runs.


AVIATION. (For the 06Z TAFS through 06Z Wednesday night) Issued at 123 AM EDT Wed Apr 1 2020

The widespread reducing cigs will continue overnight. IFR at the LAN, BTL and JXN will continue into Wednesday morning. Expect the IFR to spread into AZO and possibly GRR between 09Z to 12Z. LIFR remains possibly early Wednesday morning, mainly through the south east TAF sites. Cigs will slowly lift late Wednesday morning into Wednesday afternoon.

MARINE. Issued at 306 AM EDT Wed Apr 1 2020

Overall any marine impacts looks minimal given the relatively weak pressure gradient that will be in place over the next couple of days and into the weekend.


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

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 1 mi31 min N 6 G 7 41°F 1017.6 hPa36°F
HLNM4 - 9087031 - Holland, MI 32 mi57 min N 4.1 G 6 41°F 44°F1015.3 hPa38°F
LDTM4 - 9087023 - Ludington, MI 50 mi57 min NE 2.9 G 6 39°F 34°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI6 mi26 minNNE 510.00 miOvercast42°F35°F76%1016.8 hPa

Link to 5 minute data for KMKG

Wind History from MKG (wind in knots)
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Last 24hrN5N6N6N7NE8NE7NE9NE7NE5NE3NE5N5CalmN7N7--N8N5N6N6N4N3NE5NE5
1 day agoNW11
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N15N7NW8N7N8N6NW6N7N7N7N5N5
2 days agoS10S11SW13S12
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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    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 (4,6,7,8)
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Ground Weather Radar Station Grand Rapids/Muskegon, MI
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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.