Saturday, April4, 2020
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Marine Weather and Tides
Delton, 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 7:16AMSunset 8:13PM Saturday April 4, 2020 10:40 AM EDT (14:40 UTC) Moonrise 3:00PMMoonset 4:42AM Illumination 88% 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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LMZ845 South Haven To Holland Mi- 805 Am Edt Sat Apr 4 2020
.small craft advisory in effect from noon edt today through this evening...
Today..Northwest winds 15 to 25 knots. Rain showers likely. Waves 2 to 3 feet building to 3 to 5 feet.
Tonight..North winds 10 to 15 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 2 to 3 feet after midnight.
Sunday..Northeast winds around 10 knots backing north. Sunny. Waves 1 foot or less.
Sunday night..North winds 5 to 10 knots veering southeast toward daybreak. Partly cloudy. Waves 1 foot or less.
Monday..South winds 5 to 15 knots. Mostly cloudy with a chance of rain showers. Waves 1 foot or less.
Tuesday..Southeast winds around 10 knots veering south. Mostly cloudy with a chance of showers and Thunderstorms. Waves 1 foot or less.
Wednesday..West winds 5 to 15 knots. Mostly Sunny. Waves 2 to 4 feet.
LMZ845 Expires:202004042000;;556363 FZUS53 KGRR 041205 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 805 AM EDT Sat Apr 4 2020 For waters within five nautical miles of shore on Lake Michigan LMZ845-042000-


7 Day Forecast for Marine Location Near Delton CDP, MI
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location: 42.49, -85.43     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 041132 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 732 AM EDT Sat Apr 4 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 308 AM EDT Sat Apr 4 2020

- Showers today

- Thunderstorms possible Tuesday into Tuesday night

- Cooler for the end of next week

DISCUSSION. (Today through next Friday) Issued at 308 AM EDT Sat Apr 4 2020

- Showers today

A cold front will track eastward through the CWA today. Already some light rain showers have moved into the Ludington area. The latest model runs are in fairly good agreement in tracking an area of showers through the region today. Lift is shown to be weak and the moisture somewhat limited. Thus most of the showers should be on the light side. We will continue to feature a window of high pops for all sites today. It does look like the back edge of the showers should clear the Lansing area by 00z this evening.

- Thunderstorms possible Tuesday into Tuesday night

Instability advects in from the southwest late Monday night and more so Tuesday morning as a mid level wave pushes in from the west. Daytime heating could lead to some better surface based instability Tuesday afternoon that could linger into the evening. This is when the mid level wave pushes through. Deep layer shear is shown to increase. That could support a period of strong to perhaps severe storms at some point Tuesday afternoon or evening. We will need to monitor trends closely on this system. We will mention the potential in the Hazardous Weather Outlook. By 06z Wednesday the instability axis is shown to be southeast of the CWA.

- Cooler for the end of next week

A stronger mid level wave digs down for Wednesday. On the backside of this system an impressive surge of cold air is shown to track in by the High Res Euro. It would be cold enough for snow showers. We will feature well below normal temperatures along with the risk for rain or snow showers.

AVIATION. (For the 12Z TAFS through 12Z Sunday morning) Issued at 727 AM EDT Sat Apr 4 2020

With a cold front moving in from the west this morning . showers and lower clouds will be arriving. IFR impacts look likely for a period during the day. Some locations near the shoreline may drop down to LIFR. The wind shifts as the front moves through. Drier air will gradually filter in from the west during the afternoon and into tonight. This should result in ceilings and visibilities going to VFR for most locations.


MARINE. Issued at 308 AM EDT Sat Apr 4 2020

On the backside of the departing cold front the winds will increase from the north northwest. Values are likely to reach small craft advisory criteria this afternoon. We will maintain the headline.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . Small Craft Advisory from noon today to 11 PM EDT this evening for LMZ844>849.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 46 mi59 min NW 15 G 17 39°F 43°F1017.4 hPa39°F
SVNM4 - South Haven, MI 46 mi41 min WNW 16 G 19 38°F
45168 48 mi31 min WNW 14 G 16 38°F 40°F2 ft1019.9 hPa34°F
MKGM4 - Muskegon, MI 70 mi31 min N 19 G 22 39°F 1019.1 hPa38°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Battle Creek Executive Airport, MI16 mi48 minWSW 510.00 miLight Rain49°F37°F64%1017.3 hPa
Kalamazoo/Battle Creek International Airport, MI18 mi48 minW 59.00 miLight Rain47°F39°F74%1017.8 hPa

Link to 5 minute data for KBTL

Wind History from BTL (wind in knots)
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Last 24hrE4Calm4Calm3SW4NE5N3W3E5NE5E3E3SE6SE7SE8S7S8S4S6S6SE4S4SW5
1 day agoNW3SW46NW7W7W4N8--4----NW6NW3NW5NW3CalmCalmCalmCalmCalmCalmCalmNE5--
2 days agoN5N5N4CalmN3NW4NW4NW6NW5NW4NW3NW6NW5W4NW4NW3W4NW3CalmCalmCalmCalmCalmNW4

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 (10,2,3,4)
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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 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.