Tuesday, May11, 2021
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Marine Weather and Tides
Grand Haven, MI

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:23AMSunset 8:59PM Tuesday May 11, 2021 10:12 PM EDT (02:12 UTC) Moonrise 5:32AMMoonset 8:02PM Illumination 0% Phase: New Moon; Moon at 0 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- 1005 Pm Edt Tue May 11 2021
Rest of tonight..North winds 5 to 15 knots. Clear. Waves 1 to 2 feet.
Wednesday..North winds around 5 knots backing northwest 10 to 15 knots. Sunny. Waves 1 foot or less.
Wednesday night..Northwest winds 5 to 10 knots. Mostly clear. Waves 1 foot or less.
Thursday..West winds 5 to 10 knots. Sunny. Waves less than 1 foot.
Thursday night..West winds around 5 knots backing south after midnight. Mostly clear. Waves less than 1 foot.
Friday..South winds 5 to 10 knots veering southwest. Sunny. Waves less than 1 foot.
Saturday..Southwest winds 5 to 10 knots. Partly Sunny. Waves 1 foot or less.
Sunday..Southeast winds 10 to 15 knots becoming around 15 knots. Partly Sunny with a chance of rain showers. Waves around 1 foot.
LMZ846 Expires:202105120900;;975576 FZUS53 KGRR 120205 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1005 PM EDT Tue May 11 2021 For waters within five nautical miles of shore on Lake Michigan LMZ846-120900-


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 112323 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 723 PM EDT Tue May 11 2021

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 327 PM EDT Tue May 11 2021

-Two more frosty nights

-Dry through the weekend; warmer

-Chance for some rain next week

DISCUSSION. (This evening through next Tuesday) Issued at 327 PM EDT Tue May 11 2021

--Two more frosty nights--

Large surface high building in from the west and dry air mass with clear skies will bring ideal radiational cooling conditions conducive to frost the next couple nights. The current diurnal cumulus and isolated showers, related to the cold air aloft and strong May sun angle, will fade with sunset. Diurnal clouds likely reforming on Wednesday afternoon inland from Lk MI, but not as extensive as today (and no showers expected) due to subsidence.

Tonight will be the coldest of the next two and with many locations expected to dip below freezing again have issued a Freeze Warning areawide. Temps on Wednesday night should be a few degrees warmer but still cold enough for frost, although a freeze is possible again near and north of U.S. 10.

--Dry through the weekend; warmer--

The surface high becomes anchored over the Great Lakes Region, moving little through Saturday. Result will be mostly sunny/pleasant days from Thursday through Saturday with low humidity and highs in the mid to upper 60s. Chilly nighttime lows will still occur however as the dry air remains in place and wouldn't rule out more frost over northern sections of the CWFA. As the high slips away on Sunday and the return flow develops, we should warm to the lower 70s for highs along with more in the way of mid and high level cloudiness in developing WAA pattern.

--Chance for some rain next week--

Large QPF spread exists next week in ensemble guidance, but a better chance of receiving much needed rain does develop. Southerly flow off the gulf and northward moving warm front with PWATs rising to over one inch looks to provide a good opportunity for showers and perhaps some storms. Currently the best risk appears to be on Monday and Tuesday, after which time the position of the frontal boundary becomes more uncertain.

AVIATION. (For the 00Z TAFS through 00Z Wednesday evening) Issued at 723 PM EDT Tue May 11 2021

VFR conditions will continue through Wednesday afternoon. North to northwest winds around 10 knots will diminish to around 5 knots this evening.

MARINE. Issued at 327 PM EDT Tue May 11 2021

Cold north-northwest winds have really cranked up this afternoon along the lakeshore and are sustained around 20 kts between roughly Holland and Whitehall. This is flirting with advisory criteria but since it will be diminishing soon late this afternoon and early evening will not issue a headline. However conditions will remain choppy through sunset with wave heights around 3 ft.

Big surface high will settle over the Great Lakes Region from Wednesday into the weekend, leading to a lengthy period of relatively tranquil conditions on Lake Michigan. That said, typical springtime diurnal lake breeze development will result in periods of stronger onshore flow during the afternoon and early evening hours.

GRR WATCHES/WARNINGS/ADVISORIES. MI . Freeze Warning from midnight tonight to 8 AM EDT Wednesday for MIZ037>040-043>046-050>052-056>059-064>067-071>074.

LM . None.

SYNOPSIS . Meade DISCUSSION . Meade AVIATION . Ostuno MARINE . Meade


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45161 9 mi52 min NNW 9.7 G 12 43°F 42°F1 ft1027.8 hPa
45029 11 mi42 min WNW 12 G 16 44°F 42°F2 ft1028.6 hPa35°F
MKGM4 - Muskegon, MI 12 mi32 min N 14 G 15 44°F 1029.2 hPa37°F
HLNM4 - 9087031 - Holland, MI 21 mi54 min NNW 12 G 15 45°F 53°F1027 hPa39°F
45168 45 mi42 min WNW 12 G 16 44°F 44°F3 ft1028.9 hPa34°F
SVNM4 - South Haven, MI 45 mi42 min 11 G 13 45°F
LDTM4 - 9087023 - Ludington, MI 62 mi60 min NNW 4.1 G 5.1 44°F 31°F

Wind History for Holland, MI
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NE4
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G24
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI10 mi17 minNW 610.00 miFair46°F29°F51%1028.7 hPa

Link to 5 minute data for KMKG

Wind History from MKG (wind in knots)
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Last 24hrNW8N8N6N8NW6NW7NW6NW6W5NW6W10
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N12N9W8
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1 day agoN8N5N6N8N8NE9N5N5NE7NE4NE4N5NW5NW8W12W12W13
G21
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2 days agoN3N3CalmNE4NE33CalmCalmCalmNE3E4E7E10NE15
G22
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N11
G22
NE10
G20
N14
G24
N13
G19
N10NW12N7N7

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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