Thursday, October19, 2017 L-36.com


Marine Weather and Tides
Breedsville, 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 8:02AMSunset 6:55PM Thursday October 19, 2017 10:35 AM EDT (14:35 UTC) Moonrise 6:40AMMoonset 6:18PM Illumination 1% Phase: New Moon; Moon at 29 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- 202 Am Edt Thu Oct 19 2017
.small craft advisory in effect through Friday afternoon...
Today..West winds 10 to 15 knots. Sunny. Waves 4 to 6 feet subsiding to 2 to 3 feet late in the day.
Tonight..South winds 10 to 15 knots. Clear. Waves 1 to 2 feet.
Friday..South winds 10 to 15 knots. Sunny. Waves 1 to 2 feet.
Friday night..South winds 15 to 20 knots. Mostly clear. Waves 2 to 3 feet.
LMZ845 Expires:201710191600;;074652 FZUS53 KGRR 190602 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 202 AM EDT Thu Oct 19 2017 For waters within five nautical miles of shore on Lake Michigan LMZ845-191600-

7 Day Forecast for Marine Location Near Breedsville, MI
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location: 42.46, -86.13     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 191141
afdgrr
area forecast discussion
national weather service grand rapids mi
741 am edt Thu oct 19 2017
latest update...

aviation

Synopsis
Issued at 323 am edt Thu oct 19 2017
dry conditions are expected through Saturday. High temperatures
will be 10 to 15 degrees above normal Friday and Saturday with
highs in the lower 70s. Sunday into early next week will be
unsettled with frequent rain showers and highs only reaching the
50s by mid week.

Short term (today through Saturday)
issued at 323 am edt Thu oct 19 2017
no impact weather expected and no changes made to the inherited
forecast. Confidence is high that dry conditions will prevail
with temperatures possibly making it into the mid to upper 70s
Saturday afternoon.

Long term (Saturday night through Wednesday)
issued at 323 am edt Thu oct 19 2017
the mild weather will come to a screeching halt early next week as
the ridge over the southeast u.S. Moves east and a deep upper trough
moves in from canada.

We'll have several opportunities for rain, the first of which is
Sunday. A cold front will move through Sunday afternoon. There's not
much instability with the system and so we didn't add thunder to the
grids. But this front has been well advertised by the models for
several days and so confidence is high that we'll see rain from it.

The ECMWF stalls the front out over southeast lower mi and develops
a wave on the frontal boundary that rides north through lower mi
Monday night and Tuesday. We could see quite a bit of rain with this
if the ECMWF is correct. The GFS shows a little bit of this but
develops the wave farther southeast and pretty much misses lower mi.

A deep upper trough will move over the state Tuesday into Wednesday.

Much colder air will flow into the CWA during this time and highs
will fall into the 50s for the latter portion of the period.

Aviation (for the 12z tafs through 12z Friday morning)
issued at 741 am edt Thu oct 19 2017
high confidence forVFR through the period with no visibility
restrictions and scattered clouds above 18 kft. Brief low level
wind shear issues will be briefly possible this morning mainly at
the jxn and lan terminals. Winds should mix to the surface quickly
by around 14z, resulting in surface winds shifting to a more
westerly direction.

Marine
Issued at 323 am edt Thu oct 19 2017
based on buoy and coastal observations have downgraded the gale
warning north of whitehall to a small craft advisory in line with
the advisory in effect for the rest of the nearshore zones.

Extended the small craft advisory areawide to expire this
afternoon. This is when ww3 guidance forecasts the 4-6 foot waves
we're currently seeing at the buoys to subside to 1 to 3 feet as
winds veer to the west-northwest and weaken.

Hydrology
Issued at 1050 am edt Wed oct 18 2017
we continue to see river levels slowly recede for the most part
after the heavy rain event last weekend. The trend down will
continue through Saturday with dry weather expected through then.

The next rain event for the area beginning as early as Saturday
night and more likely Sunday will bring measurable rain, however it
appears that rain amounts will be limited to a quarter of an inch or
less. This will not cause any appreciable rises on the rivers and
streams. Additional light rainfall is also expected for the first
half of next week.

Grr watches warnings advisories
Mi... None.

Lm... Small craft advisory until 4 pm edt Friday for lmz844>849.

Synopsis... Tjt
short term... Tjt
long term... 04
aviation... Tjt
hydrology... Njj
marine... Tjt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SVNM4 - South Haven, MI 9 mi35 min NW 17 G 19 60°F
45168 12 mi25 min NNW 12 G 18 60°F 59°F4 ft1020.6 hPa41°F
HLNM4 - 9087031 - Holland, MI 22 mi47 min NW 13 G 15 59°F 1019.1 hPa39°F
45029 31 mi25 min NNW 12 G 16 60°F 60°F4 ft1020 hPa39°F
SJOM4 - St. Joseph, MI 32 mi35 min NW 8.9 G 11 59°F 1021 hPa (+2.4)
45026 - St. Joseph, MI 42 mi25 min NNW 12 G 14 60°F 58°F3 ft1021.3 hPa44°F
MKGM4 - Muskegon, MI 54 mi35 min NNW 14 G 16 59°F 1019.6 hPa (+2.8)37°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI10 mi58 minNW 510.00 miFair60°F42°F54%1020 hPa
Holland - West Michigan Regional Airport, MI20 mi42 minNW 610.00 miFair61°F41°F48%1020 hPa

Wind History from LWA (wind in knots)
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W7W6NW6NW7
1 day agoSW13
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SW5S4S4S5SW5S5SW5S6S4S4S4S3S4S6S7S9
2 days agoW9W8W9W8W7
G14
W6W6S3CalmCalmCalmS3CalmCalmS5S4S4S5S6S6S6S7SW8
G15
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G17

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
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

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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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.