Tuesday, March31, 2020
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Marine Weather and Tides
Beechwood, 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 7:25AMSunset 8:11PM Tuesday March 31, 2020 4:17 PM EDT (20:17 UTC) Moonrise 10:42AMMoonset 1:28AM Illumination 53% 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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LMZ846 Holland To Grand Haven Mi- 405 Pm Edt Tue Mar 31 2020
Through early evening..North winds 10 to 20 knots. Cloudy with a slight chance of rain showers. Waves 1 to 3 feet.
Tonight..North winds 10 to 20 knots decreasing to 5 to 10 knots after midnight. Mostly cloudy. Waves 1 to 3 feet.
Wednesday..North winds 5 to 10 knots backing northwest 10 to 15 knots late in the day. Partly Sunny. Waves 1 foot or less.
Wednesday night..Northwest winds 5 to 10 knots veering east toward daybreak. Partly cloudy. Waves 1 foot or less.
Thursday..Southeast winds 5 to 10 knots veering south. Mostly Sunny. Waves less than 1 foot.
Thursday night..Southeast winds 5 to 15 knots. Partly cloudy. Waves around 1 foot.
Friday..Southeast winds 10 to 15 knots. Partly Sunny. Waves around 1 foot.
Saturday..South winds around 15 knots veering northwest late in the day. Rain showers likely. Waves 1 to 2 feet.
Sunday..North winds 10 to 15 knots backing northwest. Partly Sunny. Waves 1 foot or less.
LMZ846 Expires:202004010800;;370007 FZUS53 KGRR 312005 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 PM EDT Tue Mar 31 2020 For waters within five nautical miles of shore on Lake Michigan LMZ846-010800-


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 311928 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 328 PM EDT Tue Mar 31 2020

LATEST UPDATE . Synopsis/Discussion/Marine/Hydro

SYNOPSIS. Issued at 328 PM EDT Tue Mar 31 2020

- 7-day forecast is mainly dry with a warming trend

- Isolated to Scattered Showers This Evening - Lengthy Dry Period from Overnight through Friday Night - Light Rain Possible on Saturday

- Better Chance for Rain Mid Next Week

DISCUSSION. (This evening through next Tuesday) Issued at 328 PM EDT Tue Mar 31 2020

-- 7-day forecast is mainly dry with a warming trend --

Overall the 7-day forecast does not feature much in the way of precipitation and it contains a fairly steady warming trend. 500mb heights rise through the period reaching the 560’s by the end of this week. By Tuesday evening of next week, the GFS has the 570 dm height contour into the southern portion of the state. We will cover the chances for precipitation below (albeit pretty low). As for temperatures we will make a run at 50 tomorrow and to around 60 on Thursday and Friday. We cool down a bit over the weekend with a trough moving through, but mid next week (Tues/Wed) in deep southerly flow it looks like 70s are possible.

-- Isolated to Scattered Showers This Evening –

Mid level troughing and some trapped low level moisture is resulting in some isolated to scattered showers across Lower Michigan this afternoon. Based on the HRRRX and the NAMnest we expect the showers to continue into the evening hours, but come to an end overnight.

-- Lengthy Dry Period from Overnight through Friday Night --

It appears that we are looking at a lengthy period of dry weather from overnight through Friday night as ridging builds across the area both at the surface and aloft. Some of the higher resolution models are showing very isolated showers Wednesday afternoon, but we are going with a dry forecast for now.

-- Light Rain Possible on Saturday --

An inverted trough of low pressure moves through the region on Saturday brining with it some light rain. The rain looks to be on the light side with what is a weakening trough. This trough has been consistently in the models however and we are expecting rainfall to generally be less than a quarter of an inch. Both the operational ECWMF and GFS show rainfall amounts less than 0.20 in most areas.

-- Better Chance for Rain Mid Next Week --

Better chances for rain come as we head into the middle of next week as troughing out west moves into the Plains states and toward the Great Lakes next week. There are still timing and location differences as is almost always the case with tracking a feature 7-8 days out. That said the main theme’s of deep southerly flow and rain chances increasing into Tuesday and Wednesday look similar. At this point there is not a strong signal of heavy rain in the ECWMF or the GFS ensembles. That may change with time, but it is not there yet.

AVIATION. (For the 18Z TAFS through 18Z Wednesday afternoon) Issued at 135 PM EDT Tue Mar 31 2020

Widespread MMVFR cigs will continue through the early evening. By 10pm or so we should see IFR cigs advect west from Canada and overspread the TAF sites. Could be some fog with that too. Generally looking at cigs around 700-900 feet. The IFR will lift to MVFR late morning Wednesday.

MARINE. Issued at 328 PM EDT Tue Mar 31 2020

Some light north winds are expected to continue into tonight, but nothing that will bring waves close to Small Craft Advisory Criteria (4 feet). Waves of 1-3 feet this evening will subside to a foot or less by morning. An area of high pressure will then park over Lake Michigan from Wednesday into Thursday bringing rather calm conditions on the lake. Southerly winds develop on the backside of the high from Thursday night into Friday. Winds and waves may reach SCA criteria Friday into Friday night as southerly winds of 15 to 25 mph look possible.

HYDROLOGY. Issued at 328 PM EDT Tue Mar 31 2020

The latest trends on the rivers are for no river forecast points to reach flood stage as a result of this past weekend's rainfall. Robinson Township on the Grand River will come closest to flood stage, but should stay just under.

We are expecting mainly dry conditions from this evening, through Friday. Even the next rain expected on Saturday is not expected to be much, and should not affect the rivers. These forecast conditions will allow the rivers to crest soon, if they have not already. Then they will be able to drop and recover a bit.

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

SYNOPSIS . Duke DISCUSSION . Duke AVIATION . 04 HYDROLOGY . NJJ MARINE . Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 0 mi47 min NW 11 G 12 38°F 41°F1015.2 hPa37°F
SVNM4 - South Haven, MI 26 mi37 min NW 13 G 15 37°F
MKGM4 - Muskegon, MI 32 mi27 min N 16 G 16 38°F 1017.4 hPa34°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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NW18
G22
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G16
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NW8
N4
N6
NW14
N13
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G16
N9
N8
N5
G9
N5
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NE5
G8
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G10
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1 day
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S19
SW19
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G21
SW15
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G25
W18
G22
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2 days
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E8
G12
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G13
NE13
G19
E16
G21
E12
G18
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G28
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G24
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S16
G23
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S24
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G30
S21
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G25
S22
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S23
G28

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI6 mi24 minNE 510.00 miOvercast44°F34°F68%1016.3 hPa

Link to 5 minute data for KBIV

Wind History from BIV (wind in knots)
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Last 24hrNW13
G21
NW13
G20
N7
G15
NW6NW5N3N3N4NW5N5N6NE4N6N4NE5NE4NE5NE4NE7NE5NE3NE7NE3NE5
1 day agoSW21
G30
W21
G30
W20W19
G29
W15
G23
W15
G24
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W16W15
G25
W14
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G24
NW12
G23
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G24
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G25
NW13
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NW14
G20
2 days ago--E11E9
G18
E9E12
G18
E14E14
G23
E14
G21
SE13
G21
SE11SE9S7SW7S6SW14
G20
SW12SW23
G32
SW26
G37
SW23
G33
SW18
G35
SW22
G31
SW22
G36
SW20
G32
SW22
G31

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 (16,3,4,5)
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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.