Tuesday, November20, 2018 L-36.com


Marine Weather and Tides
Delton, MI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:38AMSunset 5:17PM Tuesday November 20, 2018 6:48 AM EST (11:48 UTC) Moonrise 4:13PMMoonset 4:27AM Illumination 93% 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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LMZ845 South Haven To Holland Mi- 312 Am Est Tue Nov 20 2018
.small craft advisory in effect through Wednesday afternoon...
Today..Northeast winds 10 to 20 knots. Then increasing to 15 to 25 knots late in the day. Mostly cloudy with a slight chance of snow showers. Waves 2 to 4 feet subsiding to 1 to 3 feet, then building to 2 to 4 feet late in the day.
Tonight..West winds to 30 knots veering northwest toward daybreak. Mostly cloudy with a chance of rain and snow showers. Waves 6 to 8 feet.
Wednesday..North winds 15 to 20 knots. Mostly cloudy. A slight chance of rain and snow showers until midday. Waves 5 to 7 feet.
Wednesday night..East winds around 15 knots. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
LMZ845 Expires:201811201615;;576078 FZUS53 KGRR 200812 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 312 AM EST Tue Nov 20 2018 For waters within five nautical miles of shore on Lake Michigan LMZ845-201615-


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 201118
afdgrr
area forecast discussion
national weather service grand rapids mi
618 am est Tue nov 20 2018
latest update...

aviation

Synopsis
Issued at 230 am est Tue nov 20 2018
light snow showers and flurries will taper off early this
morning. Another clipper system will bring light snow showers
again tonight. High pressure will bring fair but continued cold
weather Wednesday through Thursday before temperatures undergo a
moderating trend Friday through the weekend with a chance for rain
showers this weekend.

Discussion (today through next Monday)
issued at 230 am est Tue nov 20 2018
a few light snow showers and flurries will linger over our
southern fcst area for 2-3 more hours (mainly south of i-96)
early this morning before weak ridging briefly builds in to bring
tranquil wx today. However another clipper system will move in
from the northwest tonight and bring another round of light snow
showers.

A consensus of latest high res guidance continues to suggest that
light accumulations of less than an inch will occur tonight. The
relatively higher amounts of over a half an inch are most likely
to occur near to west of us-131 due to lake enhancement with
little to no accumulations over our eastern fcst area.

High pressure building southeast from canada will bring fair but
cold wx Wednesday through Thursday. Temperatures will undergo a
gradual moderating trend beginning Friday as strong southerly flow
warm air advection develops on the back side of the departing
ridge.

Persistent southerly flow will also result in an increase in
moisture and some showers are forecast this weekend. A potentially
stronger low pressure system is likely to move across the lower
great lakes region late Sunday into Monday bringing potential for
more widespread rain. A colder airmass will advect in behind
that system early next week and cause pcpn to change over to snow
showers by late Monday Tuesday.

Aviation (for the 12z tafs through 12z Wednesday morning)
issued at 615 am est Tue nov 20 2018
light snow showers will be around for part of today leading to
local impacts. Tonight a more widespread area of snow showers is
forecasted to move in. Confidence is high that we will see MVFR
conditions along with an increased risk for local ifr and lower
conditions. Gusty winds are expected tonight with some values over
20 knots near the lakeshore.

Marine
Issued at 230 am est Tue nov 20 2018
wave heights will remain hazardous to small craft this morning
before subsiding a bit briefly this afternoon. However winds and
waves will ramp back up tonight after the passage of another cold
front. Southwest winds to 20 to 30 kts are anticipated this
evening which will veer to the northwest overnight and remain up
around 20-30 kts after frontal passage.

Hydrology
Issued at 217 pm est Mon nov 19 2018
there are no hydrologic concerns through the end of the week. A
few rounds of light precipitation, mostly falling in the form of
snow, will affect the area through Wednesday. The first will be
this afternoon through tonight, with a few light showers lingering
near the lakeshore through early Tuesday. The second round will
occur Tuesday night into Wednesday morning. Thursday and most of
Friday look dry.

Longer range models then continue to show a wetter pattern setting
up Friday evening through early next week. Several rounds of
rainfall look to occur, although the timing from Saturday onward is
still uncertain as forecast models vary widely with the timing,
track, and strength of low pressure systems near the region. We will
continue to monitor potential rainfall amounts, but it does not look
like there will be flooding concerns.

Grr watches warnings advisories
Mi... None.

Lm... Small craft advisory until 5 pm est Wednesday for lmz844>849.

Synopsis... Laurens
discussion... Laurens
aviation... Mjs
hydrology... Hlo
marine... Laurens


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SVNM4 - South Haven, MI 46 mi38 min NNE 11 G 14 28°F
HLNM4 - 9087031 - Holland, MI 46 mi48 min NE 4.1 G 5.1 25°F 1020.2 hPa (+1.8)15°F
SJOM4 - St. Joseph, MI 63 mi48 min NE 7 G 12 30°F 1021 hPa (+3.1)
MKGM4 - Muskegon, MI 70 mi28 min ENE 7 G 9.9 27°F 1023.3 hPa17°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
W K Kellogg Airport, MI16 mi55 minN 1110.00 miOvercast27°F21°F78%1020.3 hPa
Kalamazoo/Battle Creek International Airport, MI18 mi55 minN 87.00 miLight Snow28°F23°F81%1020.5 hPa

Wind History from BTL (wind in knots)
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Last 24hrS3SW3S5SW7SW9SW8SW8SW8W6SW7SW6W6SW5SW5SW6W5W6NW6NW7NW4N5N6N12N11
1 day agoCalmCalmS4S3S4S3SW3SW4SW6NW7NW6W3W4NW5S4S4CalmS4SW3S5S4S7SW6SW4
2 days agoW3SW3SW3W3W4W4W5N7N4NW4NW4NE5NE3NE4E3NE4N4CalmN3NE3CalmE3E3SE4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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wmap_A
GOES 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 (6,6,7,8)
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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.