Friday, September22, 2017

Marine Weather and Tides
Hart, MI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:32AMSunset 7:42PM Friday September 22, 2017 8:22 PM EDT (00:22 UTC) Moonrise 8:56AMMoonset 8:19PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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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LMZ848 Whitehall To Pentwater Mi- 319 Pm Edt Fri Sep 22 2017
Tonight..South winds 10 to 15 knots. Clear. Waves 1 to 2 feet.
Saturday..South winds 5 to 15 knots. Sunny. Waves 1 to 2 feet.
Saturday night..Southeast winds 5 to 10 knots. Clear. Waves 1 foot or less.
Sunday..South winds 5 to 10 knots. Sunny. Waves 1 foot or less.
LMZ848 Expires:201709230315;;775059 FZUS53 KGRR 221919 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 319 PM EDT Fri Sep 22 2017 For waters within five nautical miles of shore on Lake Michigan LMZ848-230315-

7 Day Forecast for Marine Location Near Hart, MI
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location: 43.66, -86.53     debug

Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 230002
area forecast discussion
national weather service grand rapids mi
802 pm edt Fri sep 22 2017
latest update...


Issued at 315 pm edt Fri sep 22 2017
hot humid and predominantly dry weather will continue through
Monday. An isolated shower is possible through early this evening
east of us-131. However the vast majority of our area will have dry
conditions through the weekend into early next week. A cold front
will bring the next good chance for rain for most of our area late
Tuesday into Wednesday.

Short term (this evening through Sunday night)
issued at 315 pm edt Fri sep 22 2017
it will remain unseasonably hot and humid through the weekend with
sfc upper ridging in place and persistent south to SW flow waa.

High temperatures will reach the upper 80's to lower 90's through
the weekend with a couple of middle 90's MAX temps possible at
typically hottest driest locations. Low temps will range from the
middle 60's to lower 70's. We will maintain mention of patchy fog
in the fcst during the early morning hours Saturday with the humid
airmass in place and very little boundary layer mixing at that

A CU field has developed near to east of a line from mt. Pleasant
to allegan. Dry wx will continue across the vast majority of our
area through the rest of the afternoon and evening. However
an isolated shower or two and perhaps an isolated storm may
develop east to southeast of kgrr through the early evening hours
now that instability has increased. Overall convective potential
looks very low though due to lack of a forcing mechanism boundary
to focus convective initiation.

Long term (Monday through Friday)
issued at 315 pm edt Fri sep 22 2017
a substantial shift is still expected next week in our weather
pattern. The upper ridge that is in place now will shift off to the
east on Monday and Tuesday replaced by troughing on Thursday and
Friday. 850mb temps start the work week in the +16 to +18c range,
but dive to as low as +3c later in the week.

Monday and Tuesday will continue to be warm and humid with highs
expected to be in the 80s. The frontal passage has trended earlier
in both the ECMWF and the gfs. The front is now east of the CWA in
both models by midday on Wednesday.

Chances for showers and storms look possible with the front from
Tuesday afternoon through Wednesday midday. The deeper moisture with
the front is forecast to move pretty quickly through the area so the
best chances for precipitation look to come Tuesday night and early
Wednesday morning.

Much cooler air will be in place for the last two days of the work
week, Thursday and Friday. Highs on Wednesday will likely be in the
70s, but only 60s are expected for Thursday and Friday. So, folks
that are not fond of this type of heat in september will be happier
by mid to late next week.

As for precipitation chances in the northwest flow upper troughing
our model blends look a bit dry in my opinion for thurs fri. I can
see needing to add more in the way of showery precipitation to the
forecast as the ECMWF is pushing multiple upper shortwaves through
our area during that time frame.

Aviation (for the 00z tafs through 00z Saturday evening)
issued at 802 pm edt Fri sep 22 2017
vfr conditions are expected this evening follwed by areas of MVFR
and brief ifr after 06z, especially at azo and jxn. Any fog should
be gone by shortly after 12z withVFR conditions through Saturday
afternoon. Winds will be light tonight and from the southwest aob
10 knots on Saturday.

Issued at 315 pm edt Fri sep 22 2017
wind speeds and wave heights will remain minimal through the
weekend with south to southwest winds of around 5 to 15 kts and
wave heights at or below 2 feet.

Issued at 1054 am edt Fri sep 22 2017
rivers are running around normal to below normal for the time of
year. Meanwhile, the us drought monitor is indicating dry conditions
across southern lower michigan. Isolated thunderstorms may develop
during the afternoon and early evening near i-69. Near-record warmth
is expected today through the weekend. The next chance for rain is
Wednesday. No river issues are expected through next week.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Laurens
short term... Laurens
long term... Duke
aviation... Ostuno
hydrology... 63
marine... Laurens

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDTM4 - 9087023 - Ludington, MI 20 mi53 min NNE 7 G 9.9 79°F 67°F
45024 22 mi33 min N 7.8 G 14 72°F 69°F1 ft1018.1 hPa68°F
BSBM4 - Big Sable Point, MI 27 mi43 min NNW 2.9 G 6 73°F 1018.3 hPa
MKGM4 - Muskegon, MI 32 mi33 min S 12 G 12 76°F 1016.1 hPa68°F
45161 34 mi43 min SSE 5.8 G 5.8 73°F 69°F1 ft1017.1 hPa
MEEM4 - Manistee Harbor, MI 42 mi103 min NNE 8.9 G 15 74°F 1018.3 hPa

Wind History for Ludington, MI
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ludington, Mason County Airport, MI22 mi29 minN 010.00 miFair75°F67°F76%1017.6 hPa

Wind History from LDM (wind in knots)
Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3E3SE3S3S4SW9SW11
1 day agoSE3E5SE4S7SW6SW6SE6SE3CalmCalmCalmCalmCalmSE3CalmW6SW5SW8SW7SW5SW4CalmCalmCalm
2 days agoCalmCalmCalmCalmE4SE9SE5SE4CalmCalmSE4SE5SE7SE11SE11SE8SE9

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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of GreatLakes    EDIT

Wind Forecast for Grand Rapids, MI (20,4,5,8)
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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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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 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 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.