Monday, August26, 2019 L-36.com


Marine Weather and Tides
Grand Ledge, 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 6:55AMSunset 8:25PM Monday August 26, 2019 2:49 AM EDT (06:49 UTC) Moonrise 1:17AMMoonset 4:51PM Illumination 19% Phase: Waning Crescent; Moon at 25 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- 1005 Pm Edt Sun Aug 25 2019
Rest of tonight..Southeast winds 15 to 20 knots. Mostly cloudy. Waves 1 foot or less.
Monday..Southeast winds 15 to 20 knots. Rain showers likely and a slight chance of Thunderstorms. Waves 1 to 2 feet.
Monday night..South winds 20 to 25 knots. Rain showers and a slight chance of Thunderstorms. Waves 1 to 3 feet building to 3 to 5 feet after midnight.
Tuesday..West winds to 30 knots decreasing to 10 to 20 knots. Mostly Sunny with a chance of rain showers and a slight chance of Thunderstorms. Waves 3 to 5 feet.
Tuesday night..West winds 10 to 20 knots. Mostly clear. Waves 2 to 4 feet.
Wednesday..West winds 15 to 25 knots. Sunny. Waves 5 to 7 feet.
Thursday..Southwest winds 15 to 20 knots. Sunny. Waves 2 to 4 feet.
Friday..West winds 10 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
LMZ845 Expires:201908260900;;212831 FZUS53 KGRR 260205 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1005 PM EDT Sun Aug 25 2019 For waters within five nautical miles of shore on Lake Michigan LMZ845-260900-


7 Day Forecast for Marine Location Near Grand Ledge, MI
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location: 42.75, -84.75     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 260638
afdgrr
area forecast discussion
national weather service grand rapids mi
238 am edt Mon aug 26 2019
latest update...

synopsis discussion marine

Synopsis
Issued at 238 am edt Mon aug 26 2019
- showers and a few thunderstorms today
- areas of heavier rain tonight

Discussion (today through next Sunday)
issued at 238 am edt Mon aug 26 2019
moisture returns today with showers moving in late this morning and
becoming more numerous this afternoon. Thunderstorm coverage and
intensity will be limited by marginal instability but heavy rain
potential exists overnight with p-wats around 2 inches as the cold
frontal rain bands move through,
mbe vectors look less conducive for flooding than 24 hours ago as
storm motions should remain greater than 10 knots during this
event but some minor flooding will be possible if any training
develops.

The rain moves off to the east Tuesday afternoon but isolated showers
may return Wednesday as upper trough axis moves through and lapse
rates are steep enough for diurnal enhancement of CU development.

Lack of deep moisture should limit coverage across all but the
northern zones where soundings show better potential.

Then mostly fair and cool for Thursday but scattered showers
return Friday as sfc cold front pushes through.

Aviation (for the 06z tafs through 06z Monday night)
issued at 1246 am edt Mon aug 26 2019
a strong surge of moisture will move over the TAF sites later
today ahead of a sfc low. Showers are expected to develop during
the day and CIGS vsbys will take a turn toward ifr MVFR. Limited
instability will likely keep the threat of thunderstorms on the
low side. However, high precipitable water values will result in
potentially heavy downpours that could negatively impact braking
action.

Marine
Issued at 238 am edt Mon aug 26 2019
winds and waves will result in hazardous conditions for small
craft and for swimmers today through Tuesday afternoon. There
will also be some hazardous conditions on Wednesday along with
coastal beach erosion in strong onshore winds.

Grr watches warnings advisories
Mi... Beach hazards statement from 10 am edt this morning through
Tuesday afternoon for miz037-043-050-056-064-071.

Lm... Small craft advisory from 10 am this morning to 5 pm edt Tuesday
for lmz844>849.

Synopsis... Ostuno
discussion... Ostuno
aviation... 04
marine... Ostuno


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 78 mi50 min E 13 G 16 65°F 1015.6 hPa57°F
MKGM4 - Muskegon, MI 90 mi30 min ESE 9.9 G 14 65°F 1016.2 hPa54°F
SBLM4 - Saginaw Bay Light #1, MI 91 mi50 min ESE 19 G 21 67°F 1018.6 hPa (-1.4)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Capital Region International Airport, MI8 mi1.9 hrsE 610.00 miFair62°F53°F73%1018.6 hPa
Charlotte, Fitch H Beach Airport, MI13 mi3.9 hrsE 410.00 miFair63°F52°F68%1019 hPa
Mason, Mason Jewett Field Airport, MI21 mi3.8 hrsESE 510.00 miFair62°F52°F73%1020 hPa
Ionia County Airport, MI21 mi3.8 hrsE 510.00 miFair62°F52°F71%1019 hPa

Link to 5 minute data for KLAN

Wind History from LAN (wind in knots)
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Last 24hrCalm--CalmE5--E5E5--E7E8
G16
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SE9E6E6--E6
1 day ago--CalmCalmCalmCalmCalmCalmNE6NE7E9NE10E7
G16
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G15
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G16
NE7E8NE4NE4----E6
2 days ago--Calm--CalmCalmCalmN3----NE8NE8N7--E6N6N3NE10NE5NE7NE6NE6------

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

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Grand Rapids, MI (2,6,7,8)
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Ground Weather Radar Station Detroit, 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.