Monday, May29, 2017 L-36.com


Marine Weather and Tides
Holland, MI

Version 3.4
What's New / NOTES
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 6:07AMSunset 9:16PM Monday May 29, 2017 11:35 PM EDT (03:35 UTC) Moonrise 9:19AMMoonset 12:00AM Illumination 21% Phase: Waxing Crescent; Moon at 5 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- 1017 Pm Edt Mon May 29 2017
Rest of tonight..West winds 15 to 20 knots. Partly cloudy. A slight chance of showers through about 2 am. Waves 2 to 3 feet.
Tuesday..Southwest winds 15 to 20 knots. Partly Sunny. A chance of showers and isolated Thunderstorms in the afternoon. Waves 2 to 3 feet.
Tuesday night..West winds around 15 knots. Mostly cloudy in the evening then becoming partly cloudy. A slight chance of showers and Thunderstorms. Waves 1 to 3 feet.
Wednesday..West winds 10 to 20 knots. Partly Sunny. Waves 2 to 3 feet.
LMZ846 Expires:201705300915;;427044 FZUS53 KGRR 300217 NSHGRR NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1017 PM EDT MON MAY 29 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ846-300915-

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 300055
afdgrr
area forecast discussion
national weather service grand rapids mi
855 pm edt Mon may 29 2017
latest update...

update

Synopsis
Issued at 325 pm edt Mon may 29 2017
the region will stay cool Tuesday and Wednesday with highs in the
60s to around 70. This compares to average highs in the 70s for
this time of year. Scattered showers, or even a thunderstorm, will
dot the landscape from Tuesday afternoon into mid day Wednesday,
then the precipitation will exit southwest michigan.

It appears a better chance of showers and storms move back into
the area Thursday night through Friday night. Next weekend looks
mainly dry. We should continue to see slightly below normal
temperatures, with highs mainly in the upper 60s to mid 70s.

Update
Issued at 856 pm edt Mon may 29 2017
i am watching an area of showers over central lake michigan moving
largely toward the east (heading toward mkg). There is a
significant twist in the h20 vapor image loops and there is also
a 400 mb PV feature with this area of showers too. The instability
is feeble at best but the model sounding show the air to be more
moist in that area so it just may be the area from mkg to ldm will
see a few showers over the next 3 to 4 hours.

Short term (this evening through Wednesday night)
issued at 325 pm edt Mon may 29 2017
the upper low over the superior region will continue to drift
slowly east. Several short waves pass through between now and mid
day wed, bringing shower chances.

Weak lift remains over SW mi into tonight. Cannot rule out an
isolated shower or storm over the NW half of the cwa, but 20 pops
should cover these.

A better chance of showers and storms will arrive Tuesday
afternoon as a short wave pinwheels around the upper low and into
sw mi by evening. Another short wave arrives Wed morning. So this
leads to carrying slightly higher pops from roughly 18z Tuesday
through 18z Wednesday. Will keep the mention of thunder in the
forecast for Tuesday afternoon and evening, as the daytime heating
and chilly air aloft leads to decent lapse rates. Same is true
toward i-94 on Wednesday, until the final short wave comes
through. Expect the scattered pcpn will be east of the area after
18z wed, with the exiting short wave. Skies will begin to clear
behind the wave into the evening.

Wednesday night will be mostly clear and cool with lows dipping to
the 45 to 50 range.

Long term (Thursday through Monday)
issued at 325 pm edt Mon may 29 2017
showers and thunderstorms will be on the increase Thursday night and
Friday as area of isentropic ascent in overrunning pattern sets up
across lower michigan, although it appears that the bulk of the
precip could remain just to our south where one or more clusters of
convection form along a well defined sfc boundary Thursday night
into Friday night.

There is lower than average confidence in the forecast over the
weekend as ensemble spread remains large. The majority of solutions
suggest a canadian sfc high will be centered across southern canada
or the northern great lakes with a sfc low tracking across the
stalled sfc boundary south of lower michigan. Dry northerly flow
should result in fair weather over much of the weekend although
southern zones could be in the northern edge of the rain at times.

Aviation (for the 00z tafs through 00z Tuesday evening)
issued at 720 pm edt Mon may 29 2017
vfr conditions will continue through Tuesday (and well beyond
then). A cold core upper low over the area will bring afternoon
showers to the area tomorrow as it did today. Also, as today
there, will be a "lake shadow" to the convection. Locations like
grr and mkg will very likely see no showers. On the other hand,
azo,btl, lan, and jxn have a better chance of having one of those
showers. Even then through I would expectVFR conditions to rule.

Like today tomorrow will be breezy with gust to near 25 kts at
times. The showers are expected to dissipate with sunset
tomorrow.

Marine
Issued at 325 pm edt Mon may 29 2017
winds have come up today and waves will continue to gradually
build tonight. Not expecting we will reach small craft advisory
criteria, but it will become rougher on the lake by midnight.

These choppy waves will continue into Tuesday, but diminish by
late afternoon and into the evening. Lower waves can be expected
Tuesday night through Wednesday night.

Hydrology
Issued at 206 pm edt Mon may 29 2017
no hydrologic concerns for a few days. Small rivers and streams
may be susceptible to rises Thursday night into Friday if
convection materializes across the region. Pwat values are
expected to increase to 1.25-1.50" across southern lower mi during
that time. Hard to see this becoming a problem on mainstem rivers
unless widespread, training thunderstorms occur. We'll keep an eye
on trends.

Grr watches warnings advisories
Mi... None.

Lm... None.

Update... Wdm
synopsis... Jk
short term... Jk
long term... Ostuno
aviation... Wdm
hydrology... Hoving
marine... Jk


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 6 mi47 min W 9.9 G 11 58°F
45029 13 mi35 min NW 5.8 G 7.8 57°F 56°F2 ft1011.1 hPa (+0.8)49°F
SVNM4 - South Haven, MI 27 mi35 min WSW 6 G 7 60°F
45168 29 mi35 min WSW 5.8 G 5.8 58°F 58°F2 ft1011.9 hPa (+1.0)51°F
45161 31 mi35 min WNW 9.7 G 12 56°F 55°F2 ft1011 hPa (+1.1)
MKGM4 - Muskegon, MI 34 mi35 min NW 9.9 G 11 57°F 1011.2 hPa (+1.5)52°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI1 mi42 minWNW 610.00 miA Few Clouds58°F46°F67%1011.6 hPa

Wind History from BIV (wind in knots)
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Last 24hrSW5W7W6W4SW5CalmSW7S5SW7SW10W18
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1 day agoSW3CalmCalmE3CalmSE3SE6E5SE5SE8S8SW4SW6NW14
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2 days agoCalmCalmN4CalmCalmCalmCalmCalmCalmCalmNE4Calm4SE53W11NW10W10N4W5NW7NW3CalmCalm

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 (23,6,7,8)
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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.