Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
Fennville, 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 7:34AMSunset 5:23PM Wednesday November 14, 2018 10:09 AM EST (15:09 UTC) Moonrise 1:24PMMoonset 11:25PM Illumination 40% Phase: Waxing Crescent; Moon at 6 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- 309 Am Est Wed Nov 14 2018
Today..North winds 10 to 15 knots veering northeast 5 to 10 knots, then veering east late in the day. Mostly Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet.
Tonight..Southeast winds 5 to 15 knots. Mostly clear. Waves around 1 foot.
Thursday..Southeast winds 10 to 15 knots. Mostly Sunny until midday, then mostly cloudy with a chance of rain and snow showers in the afternoon. Waves 1 foot or less.
Thursday night..South winds 10 to 15 knots veering southwest 15 to 25 knots after midnight. Mostly cloudy with a slight chance of rain and snow showers in the evening, then partly cloudy overnight. Waves 2 to 3 feet building to 3 to 5 feet toward daybreak.
LMZ845 Expires:201811141615;;279082 FZUS53 KGRR 140809 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 309 AM EST Wed Nov 14 2018 For waters within five nautical miles of shore on Lake Michigan LMZ845-141615-


7 Day Forecast for Marine Location Near Fennville, MI
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location: 42.65, -86.09     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 141145
afdgrr
area forecast discussion
national weather service grand rapids mi
645 am est Wed nov 14 2018
latest update...

aviation

Synopsis
Issued at 306 am est Wed nov 14 2018
sunshine is expected to return for at least part of Wednesday to
contrast a very cloudy month so far. Temperatures will still be
well below normal but winds will be light and variable. The next
system approaching from the south will spread snow into a portion
of lower michigan during the latter half of Thursday, possibly
creating slick spots on untreated roads (especially bridges) after
dark. Cold temperatures persist into early next week, though
significant precipitation does not appear likely.

Discussion (today through next Tuesday)
issued at 306 am est Wed nov 14 2018
starting to see erosion of the low-level clouds on satellite in
far southern michigan. Though we are optimistic that subsidence,
falling inversion heights, dry air, and boundary layer flow
shifting north and east will eventually defeat the lake-effect
clouds, it may take until late morning for clearing north and west
of gr. Grand rapids has not had a day yet this month with more
than 25 percent of possible sunshine. We have had 20 days in a
row of mostly cloudy skies. The surface high pressure center will
be passing through this afternoon, so winds will be light.

Moisture and lift spreading in from the upper-level low to our
south on Thursday will produce light precipitation in a portion
of the area, beginning late morning or afternoon from south to
north. Initially this precip aloft and at the surface may
encounter temperatures a little above freezing, though evaporative
cooling should convert any mix to snow fairly quickly. Expecting
a majority of precip to fall as snow with wet-bulb temperatures
through the profile holding just on the cold side of 0 c.

Snow liquid ratios likely to be rather low with a thin and high
dgz, and most of the moisture and lift focused in temperature
layers favoring plate and column crystal habits, not to mention
some riming. Overall, amounts an inch or less are expected. Models
have trended farther north again, now placing all areas
south east of holland to clare in a fair chance for snow.

Some concern for slick spots on untreated roads after dark
Thursday evening with temperatures a little below freezing.

Could get a little (freezing) drizzle mixing in overnight into
Friday. Despite the cold surface temperatures, the mid-level
inversion at or warmer than -10 c should keep a lid on lake effect
shower potential over the weekend, though some flurries are
possible.

Aviation (for the 12z tafs through 12z Thursday morning)
issued at 645 am est Wed nov 14 2018
skies will continue to clear from south to north this morning. By
15z or so all of our TAF sites will be clear. Winds will be light
and become variable as surface high pressure moves over the area.

A storm moving this way from arkansas for tomorrow will bring
increasing high and mid clouds toward sunrise Thursday.

Marine
Issued at 306 am est Wed nov 14 2018
winds are relaxing and waves diminishing for Wednesday. Southerly
winds Wednesday night into Thursday may cause waves to flirt with
small craft advisory conditions off big sable point. Small craft
advisory conditions are possible Friday as winds become more
westerly.

Hydrology
Issued at 1022 am est Tue nov 13 2018
river levels are mostly above normal for this time of year, though
they are below bank full and steady or falling. The precipitation
over the next week will be limited in amount and frozen, so rivers
will continue to fall. Despite the cold weather, freeze-up ice jams
are not a concern, as water temperatures in the main-stem rivers are
still well above freezing.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Cas
discussion... Cas
aviation... Wdm
hydrology... 63
marine... Cas


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 11 mi178 min 28°F 1032.3 hPa17°F
SVNM4 - South Haven, MI 20 mi180 min NW 11 G 14 29°F
MKGM4 - Muskegon, MI 42 mi170 min NNW 8.9 G 11 26°F 1035.7 hPa18°F
SJOM4 - St. Joseph, MI 44 mi70 min N 6 G 8 30°F 1034.2 hPa (+1.7)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI7 mi17 minNE 510.00 miPartly Cloudy30°F18°F61%1035.7 hPa
South Haven, South Haven Area Regional Airport, MI22 mi14 minN 010.00 miMostly Cloudy32°F21°F65%1034.5 hPa

Wind History from BIV (wind in knots)
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Last 24hrN6CalmNW11NW12
G18
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W8NW6NW6NW4NW7NW7NW8NW5NW6NW7NW6W5NW8NW6N33NE5
1 day agoNE5NE6N6N5NE4NE3N4N5N5N6N5N7N6NE4N3CalmCalmS3Calm3N8N8N7N5
2 days agoS13
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S12SW13
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SW11SW10SW6CalmW7S4CalmW5CalmCalmCalmW6W5W6NW6N4CalmCalmNE4

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    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.
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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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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.