Sunday, December8, 2019
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Marine Weather and Tides
Lawrence, MI

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:56AMSunset 5:11PM Sunday December 8, 2019 5:03 PM EST (22:03 UTC) Moonrise 3:25PMMoonset 4:04AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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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LMZ844 St Joseph To South Haven Mi- 405 Pm Est Sun Dec 8 2019
.small craft advisory in effect until 7 pm est this evening...
Through early evening..South winds 15 to 25 knots. Cloudy. Waves 4 to 6 feet.
Tonight..South winds 10 to 20 knots. Rain. Patchy fog. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
Monday..Southwest winds 10 to 20 knots. Rain. Patchy fog. Waves 1 to 3 feet.
Monday night..Northwest winds 20 to 25 knots. Rain and snow showers likely. Waves 3 to 5 feet building to 6 to 9 feet after midnight.
Tuesday..West winds 20 to 25 knots. Mostly cloudy with a chance of snow showers. Waves 6 to 8 feet.
Tuesday night..Northwest winds 20 to 25 knots. Mostly cloudy with a chance of snow showers. Waves 4 to 6 feet.
Wednesday..Northwest winds 15 to 25 knots. Partly Sunny with a chance of snow showers. Waves 4 to 6 feet.
Thursday..South winds 10 to 20 knots. Partly Sunny. Waves 1 to 2 feet.
Friday..South winds 15 to 20 knots. Mostly cloudy. Waves 1 to 3 feet.
LMZ844 Expires:201912090900;;055310 FZUS53 KGRR 082105 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 PM EST Sun Dec 8 2019 For waters within five nautical miles of shore on Lake Michigan LMZ844-090900-


7 Day Forecast for Marine Location Near Lawrence, MI
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location: 42.23, -86.09     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 081926 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 226 PM EST Sun Dec 8 2019

LATEST UPDATE . Synopsis/Discussion/Marine

SYNOPSIS. Issued at 225 PM EST Sun Dec 8 2019

- light rain tonight and Monday

- rain changes to snow Monday night

- lake effect snow showers Tuesday

DISCUSSION. (This evening through next Sunday) Issued at 225 PM EST Sun Dec 8 2019

No big storms this week but there could be some travel impacts Tuesday morning as cold air rushes in Monday night causing residual moisture to freeze and adding a coasting of snow on top of it. The rain transitions to snow and temperatures drop below freezing by the morning commute, so an advisory may be needed.

Lake effect snow showers continue through Wednesday evening but are limited by inversion height at or below 5 kft during that time, so amounts are expected to be light, generally a couple inches or less across the western third of the forecast area. Skies should at least partially clear on Wednesday night allowing temperatures to drop to the 5 to 15 degree range for Thursday morning.

A weak clipper could bring some light snow across the northern zones later Thursday, then we will have to watch a southern stream low moving north at the end of the week that could eventually spread some rain or snow Friday and Saturday.

AVIATION. (For the 18Z TAFS through 18Z Monday afternoon) Issued at 1241 PM EST Sun Dec 8 2019

Areas of MVFR will persist across southern and central Lower Michigan this afternoon but some clearing of the lower clouds is expected by this evening before they return later tonight. IFR is expected to prevail after midnight into Monday morning. Southwest winds will gust to over 20 knots at times through this afternoon.

MARINE. Issued at 225 PM EST Sun Dec 8 2019

Gale Warning was replaced with a SCA for the marine zones north of Holland. Winds and waves will continue to diminish this afternoon and evening.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . Small Craft Advisory until 7 PM EST this evening for LMZ844>849.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SVNM4 - South Haven, MI 16 mi34 min S 16 G 17 47°F
SJOM4 - St. Joseph, MI 23 mi64 min SSW 8 G 13 49°F 1010.5 hPa (-2.4)
HLNM4 - 9087031 - Holland, MI 38 mi58 min SSW 11 G 13 43°F 39°F1009.5 hPa41°F
MCYI3 - Michigan City, IN 56 mi44 min S 11 G 14 49°F 41°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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N9
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S6
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI12 mi69 minS 10 G 1810.00 miMostly Cloudy49°F41°F74%1009.8 hPa
Southwest Michigan Regional Airport, MI20 mi71 minSSW 10 G 189.00 miOvercast49°F39°F69%1010.5 hPa

Link to 5 minute data for KLWA

Wind History from LWA (wind in knots)
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Last 24hrS3CalmS4S3S6S5S7S8S7S6S10
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G17
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1 day agoN7N7N6CalmCalmCalmCalmCalmCalmCalmCalmCalmS4S3S4S5S4S7S8S9S7CalmS5S4
2 days agoCalmCalmCalmS3S5S7S6SW7SW7
G16
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G22
W10
G17
W7NW15
G22
N12
G18
N14
G21
N10
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N6N10
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N11
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NW9
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N9
G14
N8
G16

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 (17,4,5,8)
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Ground Weather Radar Station Grand Rapids/Muskegon, 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 numerious 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.