Sunday, December16, 2018 L-36.com


Marine Weather and Tides
Whitehall, 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 8:09AMSunset 5:12PM Sunday December 16, 2018 10:14 PM EST (03:14 UTC) Moonrise 1:50PMMoonset 1:11AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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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LMZ847 Grand Haven To Whitehall Mi- 247 Pm Est Sun Dec 16 2018
.small craft advisory in effect from 8 pm est this evening through Monday evening...
Tonight..Northwest winds to 30 knots. Mostly clear. Waves 2 to 4 feet building to 4 to 6 feet after midnight.
Monday..Northwest winds 15 to 25 knots. Partly Sunny. Waves 4 to 6 feet.
Monday night..North winds 10 to 20 knots veering southeast 5 to 10 knots toward daybreak. Mostly cloudy in the evening then clearing. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
Tuesday..South winds 10 to 15 knots. Mostly Sunny. Waves 1 to 3 feet.
LMZ847 Expires:201812170430;;892823 FZUS53 KGRR 161947 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 247 PM EST Sun Dec 16 2018 For waters within five nautical miles of shore on Lake Michigan LMZ847-170430-


7 Day Forecast for Marine Location Near Whitehall, MI
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location: 43.39, -86.34     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 162347
afdgrr
area forecast discussion
national weather service grand rapids mi
647 pm est Sun dec 16 2018
latest update...

aviation

Synopsis
Issued at 215 pm est Sun dec 16 2018
no major changes were introduce to the forecast, with the highlights
as follows:
- patchy fog may redevelop again tonight mainly east of us-131.

- a cold front will pass through lower michigan tonight with
minimal impacts expected.

- Tuesday will be noticeably colder and blustery thanks to gusty
northwest winds.

- warmer temperatures are expected midweek, with a mixture of
light rain and snow possible Thursday night and into Friday.

Discussion (this evening through next Sunday)
issued at 215 pm est Sun dec 16 2018
after a foggy morning, it's turning out to be a nice day out there
with mostly sunny skies and temperatures in the mid to upper 30s
being observed across portions of lower michigan except along the
lakeshore and portions of gratiot and clinton counties where
stubborn stratus (and even still patchy dense fog) continue. The
expectation is for the remaining stratus and fog to continue
eroding this afternoon giving most areas a chance of seeing the
sun before nightfall. As expected, winds have adopted a
southwesterly component which will veer westerly tonight in
advance of an approaching cold front.

Patchy dense fog may redevelop tonight mainly across eastern
portions of the area between 00z 7pm to 05z 12am owing to residual
low-level moisture, though winds tonight should be stronger than
last likely limiting the intensity and areal extent of any fog
that develops. Broken clouds will make a return toward daybreak
as the aforementioned cold front sweeps across the great lakes.

The coldest 850 mb temperatures appear that they will stay north
of our area and hence keep chance for lake effect precipitation
minimal. However, tomorrow will feel noticeably colder thanks to
blustery northwesterly winds gusting to 20 to 25 mph leading to
wind chills in the upper teens to lower twenties.

Much of the workweek looks quiet owing to a building upper-level
ridge and associated subsidence beneath. Surface temperatures will
return to above normal Tuesday through Thursday as 850 mb
temperatures warm to +4 to +6 c. Note that we'll have a great shot
of seeing the Sun for several consecutive days this week, an
apparent rarity this season.

Forecast model guidance continues to advertise that a deep trough
will develop across the central united states toward the end of the
week with an associated deepening surface low pressure system off
the gulf coast. As has been the case with the past two synoptic
systems, it seems the most likely path of the low will be south and
east of lower michigan keeping the brunt of precipitation outside
of our area. However, there continues to be a signal for a brief
period of light precipitation Thursday night and into Friday
morning, which may end up being rain changing to snow based on
forecast thermal profiles (note that no snow accumulations are
currently in the forecast).

This weekend, we'll return to a more winter-like pattern as the
backside of the aforementioned trough elongates developing
northwest flow aloft (with us on the cold side), introducing
periodic chances for lake effect snow and perhaps a clipper system
or two. As always during the holidays, those planning to travel
this weekend and early next week are encouraged to stay up to date
on the forecast.

Aviation (for the 00z tafs through 00z Monday evening)
issued at 647 pm est Sun dec 16 2018
a patch of fog and low clouds is north of grr and mkg and should
remain there this evening as winds in the low levels are from the
west southwest. So we expectVFR conditions overnight and into
Monday except for some areas of 2500 foot ceilings and 3 to 5
mile visbys at times late tonight and early Monday morning.

Winds will go northwest on Monday and pick up a bit with some
gusts near 20 knots at times.

Marine
Issued at 1213 pm est Sun dec 16 2018
with the passage of a cold front tonight, winds are expected to
increase and peak at 20-25 kts while shifting northwesterly. Wave
heights in turn will ramp up exceeding 5-7 ft by Monday morning. A
small craft advisory will therefore be issued tonight through
Monday.

Hydrology
Issued at 1213 pm est Sat dec 15 2018
river levels remain fairly steady now after peaking from rainfall
earlier this week. While maple river and sycamore creek were
expected to peak above bankfull, they are now expected to remain
steadily below bankfull though the upcoming week. Meanwhile high
pressure through the majority of the week will allow for continued
dry conditions with no hydro concerns. Mild daytime temperatures in
the middle to upper 30s will also help limit any ice concerns
through the week. All-in-all, quiet conditions expected.

Grr watches warnings advisories
Mi... None.

Lm... Small craft advisory until 8 pm est Monday for lmz844>849.

Synopsis... Borchardt
discussion... Borchardt
aviation... Ostuno
hydrology... Anh
marine... Anh


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 11 mi44 min WNW 11 G 12 40°F 1017.1 hPa36°F
LDTM4 - 9087023 - Ludington, MI 39 mi56 min WNW 8 G 14 40°F 30°F
HLNM4 - 9087031 - Holland, MI 43 mi62 min WSW 6 G 7 42°F 1016.1 hPa42°F
BSBM4 - Big Sable Point, MI 47 mi64 min W 23 G 25 41°F 1015.2 hPa

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI15 mi19 minW 1010.00 miA Few Clouds41°F33°F73%1016.7 hPa
Fremont Municipal Airport, MI19 mi17 minW 510.00 miFair35°F32°F90%1014.9 hPa

Wind History from MKG (wind in knots)
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Last 24hrE7CalmNW3N4NW5N3CalmE5E6E5SE5SE4SW4S4S5S3SW10SW7W6SW4SW5W7W7W10
1 day agoE3CalmN4N8NE3E3E4E5NE4NE5NE4NE4E4NE5E7E8E9E9E7NE6NE7NE9NE5NE4
2 days agoE4E4E5E3NE4E5N4NE3NE3E3CalmCalmCalmCalmCalmNW3NW8NW6W3W5NW3CalmCalmS6

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Grand Rapids, MI (22,6,7,8)
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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.