Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Beechwood, MI

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:45AMSunset 8:39PM Tuesday April 24, 2018 8:08 AM EDT (12:08 UTC) Moonrise 1:51PMMoonset 3:14AM Illumination 67% 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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LMZ846 Holland To Grand Haven Mi- 355 Am Edt Tue Apr 24 2018
.small craft advisory in effect from late tonight through late Wednesday night...
Today..East winds 5 to 10 knots backing north 10 to 15 knots late in the day. Cloudy with a chance of rain showers. Waves around 1 foot.
Tonight..North winds 15 to 25 knots. Mostly cloudy with a chance of rain showers in the evening, then partly cloudy overnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight.
Wednesday..Northwest winds to 30 knots. Mostly Sunny. Waves 3 to 5 feet.
Wednesday night..North winds 10 to 20 knots decreasing to 5 to 10 knots late at night, then backing northwest toward daybreak. Mostly clear. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight.
LMZ846 Expires:201804241515;;416292 FZUS53 KGRR 240755 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 355 AM EDT Tue Apr 24 2018 For waters within five nautical miles of shore on Lake Michigan LMZ846-241515-

7 Day Forecast for Marine Location Near Beechwood, MI
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location: 42.77, -86.21     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 241145
afdgrr
area forecast discussion
national weather service grand rapids mi
745 am edt Tue apr 24 2018
latest update...

aviation

Synopsis
Issued at 330 am edt Tue apr 24 2018
cooler temperatures can be expected the rest of the week,
although highs will still be near to only slightly below normal.

Weak low pressure over the ohio valley and a cold front
approaching from the northwest will bring clouds and scattered
showers today and tonight. High pressure will build back into the
region on Wednesday resulting in decreasing clouds and dry weather
which continues into Thursday.

Another chance of showers arrives late Thursday night and Friday
with a cold front which ushers in a cool air mass for the weekend.

Short term (today through Thursday)
issued at 330 am edt Tue apr 24 2018
coverage of showers has been very limited so far and generally
just trace amounts of rain have been observed. This should
continue to be the case this morning due to dry air still hanging
around, although an uptick in coverage and intensity is possible
for a time this afternoon and evening due to the approach of a nrn
stream shortwave and a possible diurnal boost.

The best chance of a few heavier, more organized, rain showers
looks to develop in a narrow band along the sfc cold front late in
the afternoon from gaylord alpena southwest to big rapids. This
band of showers will move southeast during the evening, then
gradually dissipate after dark. However the risk of showers will
linger until about 12z Wednesday when the NRN stream trough axis
passes through.

We may see considerable diurnal cumulus development on Wednesday
due to a pocket of cold air aloft, especially near and east of
highway 131. A lake shadow should provide mostly sunny skies at
the lakeshore, but brisk northwest winds off the chilly waters
should hold down temps, and some coastal communities may struggle
to reach 50 on Wednesday. Winds will be lighter on Thursday as the
sfc ridge comes overhead, and diurnal CU potential will be less.

Long term (Thursday night through Monday)
issued at 330 am edt Tue apr 24 2018
a cold front will bring a chance of rain showers late Thursday night
into Friday. High temps Friday and Saturday will only reach the
lower to perhaps middle 50's.

A high pressure ridge will build in from the northwest and bring
fair weather Sunday into early next week. High temps Sunday will
reach the upper 50's to lower 60's with ample Sun with subsidence
under the ridge over mi by then.

A significant moderating trend of temps will occur early next week
as strong southwest flow warm air advection develops after departure
of the ridge. High temps by early next week will reach the 70's.

Aviation (for the 12z tafs through 12z Wednesday morning)
issued at 745 am edt Tue apr 24 2018
MVFR becoming more widespread this morning as scattered light rain
showers impact the area. Some ifr becoming possible this afternoon
and evening, mainly south and east of a lan to btl line.

Conditions gradually improving toVFR later tonight from northwest
to southeast as a cold front delivers drier air and shifts the
light east winds to the northwest. It may take until closer to
12z Wed before jxn sees improvement.

Marine
Issued at 418 am edt Tue apr 24 2018
after coordination with apx iwx lot, have issued small craft
advisories for all marine zones. The advisory starts at 8 pm
tonight north of whitehall and at 2 am tonight for the rest of the
nearshore. A period of brisk northerly winds of 15 to 25 kts and 4
to 7 ft waves is expected, beginning tonight and continuing into
Wednesday evening.

Hydrology
Issued at 307 pm edt Mon apr 23 2018
five flood advisories remain on the area rivers as of this morning.

River levels are cresting up north where snow melt from northern and
central lower has allowed for some runoff. The snow has pretty much
entirely melted in the muskegon basin, so river levels will start
coming down.

For all areas, rain is expected tonight into wed. Basin averages
should be mostly under quarter of an inch, with everybody expected
to stay under half an inch. This over a period of time should not
cause any rises on the rivers this week.

Grr watches warnings advisories
Mi... None.

Lm... Small craft advisory from 8 pm this evening to 8 pm edt
Wednesday for lmz848-849.

Small craft advisory from 2 am Wednesday to 2 am edt Thursday
for lmz844>847.

Synopsis... Meade
short term... Meade
long term... Laurens
aviation... Meade
hydrology... Njj
marine... Meade


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 0 mi50 min ENE 5.1 G 6 53°F 1017.8 hPa48°F
45029 10 mi38 min E 5.8 G 5.8 48°F 38°F1019.1 hPa43°F
SVNM4 - South Haven, MI 26 mi38 min E 5.1 G 6 53°F
45168 27 mi38 min NE 3.9 G 3.9 49°F 40°F1 ft1018.9 hPa44°F
45161 29 mi48 min ESE 3.9 G 3.9
MKGM4 - Muskegon, MI 32 mi38 min SE 4.1 G 5.1 48°F 1019.4 hPa45°F
SJOM4 - St. Joseph, MI 49 mi68 min NE 1 G 4.1 53°F 1018.3 hPa (-0.3)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI6 mi76 minE 510.00 miOvercast53°F46°F80%1018.6 hPa

Wind History from BIV (wind in knots)
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Last 24hrE7E7NE7NE8NE7E9E12E8NE8NE8
G15
NE7E6E5S13S7S6S7SE8S6SE3SE6E5E5E6
1 day agoE4SE5E6E8E8E9E10E13
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E10E10E8NE4E4E4E5E5E5NE4NE5NE5E4NE6NE5
2 days agoE3Calm3W5SW5W5NW5W5NW6NW5W4W3CalmCalmCalmCalmCalmCalmCalmCalmCalmE3E4E4

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 GreatLakes    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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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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.