Friday, August23, 2019 L-36.com


Marine Weather and Tides
Holland, MI

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:58AMSunset 8:36PM Friday August 23, 2019 5:50 PM EDT (21:50 UTC) Moonrise 11:51PMMoonset 1:46PM Illumination 42% Phase: Third Quarter Moon; Moon at 23 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- 405 Pm Edt Fri Aug 23 2019
Through early evening..Northwest winds 15 to 20 knots. Sunny. Waves 1 to 3 feet.
Tonight..North winds 10 to 20 knots veering east after midnight. Clear. Waves 1 to 3 feet.
Saturday..East winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Saturday night..East winds 10 to 15 knots. Mostly clear. Waves 1 foot or less.
Sunday..Southeast winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Sunday night..Southeast winds 10 to 20 knots. Partly cloudy. Waves 1 to 2 feet.
Monday..South winds 15 to 20 knots. Mostly cloudy with a chance of showers and Thunderstorms. Waves 1 to 3 feet.
Tuesday..West winds 15 to 20 knots. Mostly Sunny with a chance of showers and Thunderstorms. Waves 3 to 5 feet.
Wednesday..West winds 10 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
LMZ846 Expires:201908240800;;098370 FZUS53 KGRR 232006 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 PM EDT Fri Aug 23 2019 For waters within five nautical miles of shore on Lake Michigan LMZ846-240800-


7 Day Forecast for Marine Location Near Holland, MI
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location: 42.77, -86.1     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 231926
afdgrr
area forecast discussion
national weather service grand rapids mi
325 pm edt Fri aug 23 2019
latest update...

synopsis discussion marine

Synopsis
Issued at 325 pm edt Fri aug 23 2019
- dry and mild through Sunday
- rain chances Monday through Tuesday
- comfortable weather holds for next week

Discussion (this evening through next Friday)
issued at 325 pm edt Fri aug 23 2019
we have at least one period of weather from Monday into Tuesday that
will have some impacts. There will potentially be another period of
some weather late in the period, but that is a bit uncertain for now.

Through early Monday, the weather is looking quite comfortable and
quiet. The upper trough that has lingered over the area the last
couple of days will exit to the east. This will allow the upper
ridge axis to slowly build over the region. Cumulus cloud
development will diminish a bit with the subsidence building in. We
will also slowly warm a couple of degrees each day.

The chance of rain will increase on Monday, and likely peak Monday
night. A short wave to our SW will be pushed to the NE as a larger
amplitude short wave arrives from the west. This initial short wave
will help bring decent moisture up and over the area. Then, the
stronger short wave with the better dynamics will interact with the
moisture to bring good chances of rain. The timing as of now does
not look conducive for a lot of severe weather.

The front should clear out then on Tuesday after some residual early
showers and storms with the frontal passage. It looks like we should
end up with some cooler and drier weather. The heart of the cold
pool aloft stays north, keeping instability clouds and showers
north.

We will be likely seeing another short wave arriving into the region
in the Thu or Fri time frame. The timing is uncertain, so we have
small chances for that whole period. The rain chances can be fine
tuned with plenty of time before then.

Aviation (for the 18z tafs through 18z Saturday afternoon)
issued at 126 pm edt Fri aug 23 2019
impacts look like they will be little to non for aviation
interests for the next 24 hours. Cumulus development will be sct-
bkn this afternoon, but will be allVFR with bases above 4k ft.

These clouds should be quick to dissipate this evening with the
loss of diurnal heating, leaving clearing skies and light E ne
winds. Can not rule out some shallow ground fog near warmer bodies
of water. The dry air in place should keep fog away from the
terminals.

We expect another round of cumulus development for Saturday
afternoon also. This will again beVFR, and will have little to no
impacts. E NE winds are once again expected.

Marine
Issued at 325 pm edt Fri aug 23 2019
no marine headlines expected to be needed through much of this
weekend. Winds maybe up around 15 knots during the daylight hours
with land lake interactions, but not high enough through early
Sunday for headlines.

Winds will start to increase late Sunday with the approach of the
next system. Once the winds increase late Sunday, winds may remain
up for the most part through mid week, with headlines likely then.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Njj
discussion... Njj
aviation... Njj
marine... Njj


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 6 mi56 min NW 13 G 14 68°F 1021.7 hPa56°F
45029 13 mi20 min NNW 12 G 16 69°F 71°F2 ft1022.1 hPa55°F
SVNM4 - South Haven, MI 27 mi40 min NNW 12 G 14 68°F
45168 29 mi20 min WNW 12 G 14 68°F 72°F2 ft1022.6 hPa53°F
45161 32 mi50 min NNE 5.8 G 7.8 71°F 70°F1 ft1022.5 hPa (-0.7)
MKGM4 - Muskegon, MI 34 mi30 min ENE 8 G 11 75°F 1021.9 hPa47°F
SJOM4 - St. Joseph, MI 51 mi50 min N 8.9 G 12 68°F 1023.4 hPa (-1.0)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI1 mi57 minNNW 810.00 miMostly Cloudy73°F55°F55%1022.3 hPa

Link to 5 minute data for KBIV

Wind History from BIV (wind in knots)
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Last 24hrNE76
G15
--5------NE3------CalmCalm4E4--NE5NE7E5NE4NW7NW115NW8
1 day agoW6N6N5CalmN4--CalmCalm--Calm5--NE4NE33E8E10
G15
--E84N75CalmN8
G17
2 days ago--NE43Calm----SW4------SW4--CalmCalmCalm----W9W8NW9W9W8--W6

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

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Wind Forecast for Grand Rapids, MI (17,4,5,8)
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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.