Sunday, July5, 2020
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L-36.com


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 6:10AMSunset 9:23PM Sunday July 5, 2020 3:59 PM EDT (19:59 UTC) Moonrise 9:10PMMoonset 5:23AM Illumination 100% Phase: Full Moon; Moon at 15 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- 1105 Am Edt Sun Jul 5 2020
Rest of today..Northwest winds 5 to 10 knots. Mostly Sunny with a slight chance of showers and Thunderstorms. Waves less than 1 foot.
Tonight..North winds around 10 knots veering northeast after midnight. Mostly clear. Waves less than 1 foot.
Monday..Southwest winds around 5 knots veering west. Sunny. Waves less than 1 foot.
Monday night..Northwest winds around 5 knots backing south after midnight. Mostly clear. Waves less than 1 foot.
Tuesday..South winds 5 to 10 knots veering west. Sunny. Waves less than 1 foot.
Wednesday..South winds 5 to 10 knots veering west. Sunny. Waves 1 foot or less.
Thursday..Southwest winds 10 to 15 knots. Mostly Sunny with a chance of rain showers. Waves around 1 foot.
LMZ845 Expires:202007052100;;359731 FZUS53 KGRR 051505 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1105 AM EDT Sun Jul 5 2020 For waters within five nautical miles of shore on Lake Michigan LMZ845-052100-


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


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 051840 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 240 PM EDT Sun Jul 5 2020

LATEST UPDATE . Discussion/Marine

SYNOPSIS. Issued at 153 PM EDT Sun Jul 5 2020

- Above normal temperatures most of week

- Some chance of convection each day

- Best chance of precipitation late in week then cooler

- heat comes back next week

DISCUSSION. (This evening through next Sunday) Issued at 240 PM EDT Sun Jul 5 2020

--Above normal temperatures most of week--

Our overall message we have been writing about for more than a week continues. That is heat with not a lot of precipitation. That is mostly because the polar jet is well north of Michigan through the week. We will see to periods of warmer highs, the first is Monday into Tuesday ahead of the first cold front, then the second is head of the next, and stronger cold front Thursday.

-- Some chance of convection each day--

Our overall pattern of the upper level ridge retrograding to the western CONUS will continue through this week into next week. A series of shortwaves top the ridge and will help touch of afternoon convection in conjunction with the lake breeze on Monday. Tuesday we have the first of two northern stream (Pacific origin) shortwaves come through the area. Due to a more westerly surface wind flow, the convection on Tuesday should be mostly east of Grand Rapids and more toward Lansing and Jackson. Wednesday we are back to weak shortwaves and the lake breeze creating some isolated afternoon storms.

-- Best chance of precipitation late in week then cooler--

This greatest chance for widespread precipitation is the second Pacific shortwave on the northern stream. This one trails the lead wave by about 20 degrees of longitude. However over time the operations between them increases as the trailing wave digs more than the lead wave does. Each one of those shortwaves will carve out a deeper eastern trough over time. So by Friday we should be in a good place for widespread thunderstorms head of the cold front. The 500 heights drop below 580 dm by Saturday, that is way more than enough to limit our highs in the afternoon into the 80s.

-- heat comes back next week--

The cooling will not last long as the upper high rebuilds behind it and expands. By Sunday we have 600 dm heights (highest of the year to date over the CONUS) over New Mexico. So by the early to middle of the next week, it would well be significantly hotter than this week.

AVIATION. (For the 18Z TAFS through 18Z Monday afternoon) Issued at 153 PM EDT Sun Jul 5 2020

For the most part winds will be light and skies will be mostly clear through Monday night.

There are lake breeze showers already developing (as of 1745z). Those showers will likely stay near and south of I-96. I expect them to impact BTL within the next hour or so. LAN and JXN should see them later this afternoon, JXN having the higher risk than LAN for them. Once the sun sets, they should be gone.

It would seem more convection should develop in the I-69 area Monday afternoon for mostly the same reasons.

MARINE. Issued at 240 PM EDT Sun Jul 5 2020

Not much wind most of this week but there is the threat of convection late in the week with the cold front on Friday.


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

SYNOPSIS . WDM DISCUSSION . WDM AVIATION . WDM MARINE . WDM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 46 mi60 min SW 2.9 G 4.1 75°F 1015.1 hPa (-1.0)70°F
SVNM4 - South Haven, MI 46 mi60 min WNW 2.9 G 4.1 77°F
45168 48 mi30 min W 3.9 G 3.9 76°F 77°F1 ft1015.3 hPa65°F
SJOM4 - St. Joseph, MI 63 mi70 min NNW 5.1 G 5.1 80°F 1016.6 hPa
MKGM4 - Muskegon, MI 70 mi50 min NW 6 G 6 79°F 1014.7 hPa72°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Battle Creek Executive Airport, MI16 mi67 minWNW 510.00 miOvercast83°F66°F59%1015.4 hPa
Kalamazoo/Battle Creek International Airport, MI18 mi67 minSW 10 G 1410.00 miA Few Clouds91°F62°F38%1014.9 hPa

Link to 5 minute data for KBTL

Wind History from BTL (wind in knots)
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Last 24hrNE8NE9NE5N6NE5NE4NE3CalmCalmCalmCalmCalmCalmCalmCalmCalmSE3SW5S4SW7SW4SW4SW4W5
1 day agoN9NW86NW9NW9NW7W5W3W5NW3CalmCalmCalmCalmE4E4E8E8E7E8NE5E6CalmE10
2 days agoN8N5NE8N6NW4NW8NW5W5W5W5W3CalmCalmCalmW3W3CalmNW43N5N10N10
G17
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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 (15,3,4,5)
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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.