Sunday, September23, 2018 L-36.com


Marine Weather and Tides
Whitehall, MI

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 7:32AMSunset 7:41PM Sunday September 23, 2018 8:39 AM EDT (12:39 UTC) Moonrise 6:26PMMoonset 4:50AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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- 342 Am Edt Sun Sep 23 2018
Today..Southeast winds around 10 knots backing north late in the day. Sunny. Waves 1 foot or less.
Tonight..East winds 10 to 20 knots. Mostly clear. Waves around 1 foot.
Monday..Southeast winds around 15 knots. Sunny until midday, then mostly cloudy with a slight chance of rain showers in the afternoon. Waves around 1 foot.
Monday night..South winds 15 to 20 knots veering southwest toward daybreak. Rain showers likely and a chance of Thunderstorms in the evening, then a chance of rain showers overnight. Waves 2 to 4 feet.
LMZ847 Expires:201809231515;;073051 FZUS53 KGRR 230742 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 342 AM EDT Sun Sep 23 2018 For waters within five nautical miles of shore on Lake Michigan LMZ847-231515-


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 231141
afdgrr
area forecast discussion
national weather service grand rapids mi
741 am edt Sun sep 23 2018
latest update...

aviation

Synopsis
Issued at 329 am edt Sun sep 23 2018
temperatures will return closer to seasonal norms today then climb
a little above normal through Tuesday, but cooler air is set to
return to close out the rest of the week. Periods of showers and
storms are expected from late Monday into early Wednesday.

Discussion (today through next Saturday)
issued at 329 am edt Sun sep 23 2018
we remain under a dry troposphere today, and clouds more prevalent
over northern michigan and the ohio valley will not be much issue
here. Looking for high temperatures to be about 5 degrees warmer
than Saturday as low level flow just above the surface becomes more
southeasterly on the backside of the departing high and 850 temps
are several degrees warmer.

Southerly low-level flow will strengthen Monday as an upper level
trough digs over the northern plains. The moisture-laden
but increasingly undefined disturbance over texoma will lift
toward our area and help touch off showers from south to north
starting Monday afternoon. Could be some thunder Monday night with
mucape approaching 500 j kg.

Keeping a chance of rain and thunder on Tuesday but there may be
some lull in activity as a wedge of drier air moves through ahead of
the main upper trough and cold front. Additional showers storms
are possible with the cold front Tuesday night. At the moment,
instability looks too meager for much chance of severe weather.

Wednesday temperatures will fall back to a little below normal
behind the front under a stiff northwest breeze. Slight chance of
rain especially north Thursday or Thursday night as a deep cyclone
moves through northern ontario. A sharp temperature gradient sets
up late in the week (cold north and warm south) but it appears
probable we will be on the cold side through Saturday.

Aviation (for the 12z tafs through 12z Monday morning)
issued at 741 am edt Sun sep 23 2018
some patchy shallow ground fog will be present through 13z this
morning, otherwise clearVFR weather will prevail today and
tonight with light east winds.

Marine
Issued at 329 am edt Sun sep 23 2018
no marine issues with winds from the east southeast and waves
generally a foot or less through Monday. Will get dicey for small
craft at times mid to late week.

Hydrology
Issued at 232 pm edt Sat sep 22 2018
rivers are running around to a little above normal for the time of
year. Levels are steady or slowly falling, and are well below flood
stage. Dry weather is expected this afternoon into Monday. Up to an
inch of rain is possible Monday into Tuesday, but no flooding is
expected.

Grr watches warnings advisories
Mi... None.

Lm... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MKGM4 - Muskegon, MI 11 mi30 min SE 5.1 G 6 51°F 1023.7 hPa49°F
45161 15 mi40 min SE 7.8 G 9.7 53°F 57°F1 ft
45029 34 mi20 min SE 5.8 G 7.8 53°F 59°F1 ft1023.6 hPa47°F
LDTM4 - 9087023 - Ludington, MI 39 mi40 min 44°F 42°F
45024 42 mi30 min E 9.7 G 12 53°F 64°F2 ft1022.2 hPa51°F
HLNM4 - 9087031 - Holland, MI 43 mi46 min 49°F 52°F1022.5 hPa45°F
BSBM4 - Big Sable Point, MI 47 mi60 min ESE 7 G 9.9 48°F 1023.4 hPa

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI15 mi45 minESE 310.00 miA Few Clouds46°F42°F86%1023.6 hPa
Fremont Municipal Airport, MI19 mi61 minE 310.00 miFair45°F42°F93%1023.4 hPa

Wind History from MKG (wind in knots)
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Last 24hrE9E7NE9E10NE6CalmCalmW8NW8W7W4CalmCalmCalmCalmCalmSE3SE3SE4SE4SE4E3E3E3
1 day agoSW15W15
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N10N11N9N9N8N5N5NE7SE5
2 days agoE3SE4SE10SE9SE10SE12S6E6SE7E7E8E8SE9SE10S11
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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 (8,2,3,4)
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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 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.