Thursday, April22, 2021
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Marine Weather and Tides
Beechwood, 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 6:49AMSunset 8:36PM Thursday April 22, 2021 10:01 PM EDT (02:01 UTC) Moonrise 2:13PMMoonset 3:54AM Illumination 85% Phase: Waxing Gibbous; Moon at 11 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- 405 Pm Edt Thu Apr 22 2021
Through early evening..Southwest winds 10 to 15 knots. Sunny. Waves 1 to 3 feet.
Tonight..South winds 10 to 15 knots veering southwest 15 to 20 knots after midnight. Mostly clear. Waves 1 to 2 feet building to 3 to 5 feet after midnight.
Friday..Southwest winds 10 to 15 knots. Partly Sunny. Waves 2 to 4 feet.
Friday night..South winds around 10 knots. Mostly cloudy with a chance of rain. Waves 1 to 2 feet.
Saturday..Southeast winds around 10 knots veering southwest, then veering northwest late in the day. Mostly cloudy with a chance of rain. Waves 1 foot or less.
Saturday night..Northwest winds 10 to 20 knots veering north 20 to 25 knots toward daybreak. Partly cloudy. Waves around 1 foot building to 2 to 4 feet after midnight.
Sunday..Northwest winds 15 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
Monday..Southeast winds 15 to 20 knots. Mostly cloudy. Waves 2 to 3 feet.
Tuesday..South winds 15 to 20 knots. Mostly cloudy. Waves 3 to 5 feet.
LMZ846 Expires:202104230800;;959717 FZUS53 KGRR 222006 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 PM EDT Thu Apr 22 2021 For waters within five nautical miles of shore on Lake Michigan LMZ846-230800-


7 Day Forecast for Marine Location Near Beechwood, MI
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location: 42.77, -86.21     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 222320 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 720 PM EDT Thu Apr 22 2021

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 233 PM EDT Thu Apr 22 2021

- Not as cold tonight as Upper Trough Moves East

- Rain on Friday night and Saturday as Low Pressure tracks south of Lower Michigan

DISCUSSION. (This evening through next Thursday) Issued at 233 PM EDT Thu Apr 22 2021

- Not as cold tonight as Upper Trough Moves East

Instability snow showers have moved east of the forecast area this afternoon and even flat cu is dissipating as upper trough moves out and heights rise. After the last two nights in the 20s, low temperatures tonight are expected to be in 30s with most places near or above freezing.

Warm advection continues on Friday with moisture return beginning on Friday but dry air in place during the day and any precip should hold off until Friday night.

- Rain on Friday night and Saturday as Low Pressure tracks south of Lower Michigan

Area of isentropic ascent and return flow moisture transport from the Gulf/Southern Plains associated with southern stream low will increase rain chances Friday evening. The low will be tracking south of Lower Michigan on Saturday and the northern edge of the precip shield should reach our forecast area with a quarter to half inch of QPF expected, mostly in the 12 hour period between 12Z Saturday and 00Z Sunday.

Model soundings show general lack of instability and thunder is not included in the forecast at this time. Colder air on the back side of the low Saturday night arrives after the deep moisture pulls off to the east, with the DGZ unsaturated after 00Z Sunday. So at this point it looks like the potential for any snow across the northern zones is low on Saturday night despite thermal profiles below freezing.

AVIATION. (For the 00Z TAFS through 00Z Friday evening) Issued at 718 PM EDT Thu Apr 22 2021

A low level jet arrives tonight which could lead to a period of LLWS for most of the TAF sites. That risk will diminish around daybreak through mid morning as the surface winds increase. The atmosphere will be rather dry so any cloud cover will be limited and at VFR levels.


MARINE. Issued at 233 PM EDT Thu Apr 22 2021

After a spell of fairly tranquil conditions could be hazardous to small craft on Sunday into Monday with winds over 25 knots and waves 4 to 6 feet.

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

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 0 mi43 min ESE 6 G 8 44°F 48°F1015.8 hPa32°F
45029 10 mi21 min ESE 3.9 G 5.8 43°F 41°F1 ft1017.3 hPa33°F
SVNM4 - South Haven, MI 26 mi31 min 6 G 6 48°F
45168 27 mi21 min SSE 3.9 G 3.9 46°F 44°F1 ft1017.3 hPa34°F
MKGM4 - Muskegon, MI 32 mi21 min SSE 4.1 G 5.1 40°F 1017.7 hPa26°F
SJOM4 - St. Joseph, MI 49 mi61 min S 6 G 8.9 52°F 1016.6 hPa (-1.3)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI6 mi68 minN 03.00 miFair with Haze43°F25°F49%1017.2 hPa

Link to 5 minute data for KBIV

Wind History from BIV (wind in knots)
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Last 24hrW3SW4W3CalmSW3W3W4SW3W6W7W8
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1 day agoN6N5N4N4N4NE4NE3N4CalmCalmE5CalmN4NW4W8NW5--NW8NW10NW12
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2 days agoNW10
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N5N3N5N4CalmN3N3NW4N65NW8NW8NW8W11
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NW9NW8NW8N6N6

Tide / Current Tables for
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Weather Map
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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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