Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Grand Ledge, MI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:38AMSunset 7:52PM Thursday March 21, 2019 8:14 AM EDT (12:14 UTC) Moonrise 7:48PMMoonset 7:23AM Illumination 100% Phase: Full Moon; Moon at 15 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- 412 Pm Est Fri Jan 25 2019
.heavy freezing spray warning in effect through Saturday morning...
.small craft advisory in effect through Saturday afternoon...
Tonight..Northwest winds 10 to 20 knots. Snow showers likely in the evening, then a chance of snow showers overnight. Heavy freezing spray through the night. Waves 3 to 5 feet.
Saturday..Southwest winds 10 to 20 knots. Mostly cloudy. A slight chance of snow showers until midday. Freezing spray through the day. Waves 2 to 3 feet.
Saturday night..West winds 15 to 25 knots. Snow showers likely in the evening, then a chance of snow showers overnight. Heavy freezing spray through the night. Waves 3 to 5 feet.
Sunday..Northwest winds 10 to 20 knots. Mostly cloudy with a chance of snow showers. Heavy freezing spray. Waves 3 to 5 feet. This is the last nearshore marine forecast (nshgrr) issuance for the season. The nshgrr will again be issued around april 1st 2019, or as conditions warrant.
LMZ845 Expires:201901260415;;919603 FZUS53 KGRR 252113 CCA NSHGRR Nearshore Marine Forecast...corrected National Weather Service Grand Rapids MI 412 PM EST Fri Jan 25 2019 For waters within five nautical miles of shore on Lake Michigan LMZ845-260415-


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 211140
afdgrr
area forecast discussion
national weather service grand rapids mi
740 am edt Thu mar 21 2019
latest update...

aviation

Synopsis
Issued at 324 am edt Thu mar 21 2019
- areas of fog early to mid morning
- cold and breezy Friday
- fair weather Saturday into Sunday
- wintry mix of light precipitation possible Sunday night into
early Monday

Discussion (today through next Wednesday)
issued at 324 am edt Thu mar 21 2019
locally dense fog will linger through early to mid morning before
slowly dissipating late this morning as boundary layer mixing
increases and a slightly drier airmass begins to advect in as winds
back to the nw. The relatively densest fog through mid morning
will be found roughly near to west of us-131. A few pockets of
locally denser fog are also noted east to klan attm.

A fairly strong shortwave will swing in from the nnw tonight.

Moisture with this system is very limited but a few light snow
showers and flurries are likely with this feature tonight into
early Friday.

It will be partly sunny but rather cold Friday with high temps
only in the 30s. A brisk northwest wind of 15 to 25 mph will
result in wind chill readings in the 20s. Skies will become mostly
clear and it will be cold Friday night as winds become light and
variable. Min temps Friday night will be in the teens.

High pressure will bring fair wx Saturday into Sunday. A mid level
disturbance will combine with a low pressure system to our west to
potentially bring some light mixed pcpn to our area Sunday night
which may linger into early Monday. However confidence on this
remains low as medium range guidance discrepancies remain in the
evolution of the system.

High pressure will build in from the northwest and bring fair wx
with seasonably cool temps from midday Monday through at least
midweek.

Aviation (for the 12z tafs through 12z Friday morning)
issued at 740 am edt Thu mar 21 2019
areas if ifr and lifr early this morning will give way toVFR
conditions by later this morning. Winds will be from the west to
northwest at around 10 knots.

Hydrology
Issued at 321 pm edt Wed mar 20 2019
the grand and muskegon rivers remain high after the widespread
rainfall and snowmelt last week. Flood warnings remain in effect for
the grand river at comstock park and robinson township, although all
locations have crested and water levels are declining. Meanwhile, a
flood advisory remains in effect for newaygo county as frozen ground
continues to limit the ability of the standing water to drain away
from some roads and buildings.

A mix of rain and snow is falling today generally along and south of
i-96. Up to one-half inch of rain is expected in some areas. This
will cause the smallest streams in the area to rise a bit, but is
not expected to result in any hazardous conditions, and should not
reverse the downward trend on the medium and larger rivers. However,
it could aggravate the problem of ponding and stranded water that is
ongoing in newaygo county.

The next chance for widespread precipitation does not move into our
area until Sunday night Monday of next week, but at this point it
looks like the worst of this storm may stay to our south. Otherwise,
generally quiet weather is expected for the next week or so, with
continued gradual melting of any snow that remains on the ground.

Grr watches warnings advisories
None.

Synopsis... Laurens
discussion... Laurens
aviation... Ostuno
hydrology... Amd


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 78 mi45 min ENE 6 G 8 35°F 37°F1012.6 hPa35°F
MKGM4 - Muskegon, MI 90 mi35 min NNE 5.1 G 6 33°F 1015.5 hPa33°F
SBLM4 - Saginaw Bay Light #1, MI 91 mi75 min NNW 9.9 G 11 33°F 1012.2 hPa (-0.0)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Capital Region International Airport, MI8 mi22 minNNW 31.00 miFog/Mist34°F34°F100%1013.9 hPa
Charlotte, Fitch H Beach Airport, MI13 mi20 minN 51.00 miFog/Mist35°F34°F100%1012.2 hPa
Mason, Mason Jewett Field Airport, MI21 mi19 minNNW 31.25 miFog/Mist36°F35°F97%1012.9 hPa
Ionia County Airport, MI21 mi19 minNNE 50.25 miFog32°F31°F99%1013.2 hPa

Wind History from LAN (wind in knots)
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Last 24hrS11S9SW14SW11
G19
S11S8S7S10S9S6S6SE3E4SE3S3CalmCalmCalmCalmCalmN4N5CalmN3
1 day agoS3SW3S4SW5W8SW11
G16
SW8W10SW14SW10W11W8W3W3CalmS3S7S7S6S6S7S7S8S7
2 days agoW4Calm4W5W10NW7W10W5W12W7W7W9W6W4SW4W5CalmCalmCalmCalmCalmCalmCalmCalm

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 (8,2,3,4)
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Ground Weather Radar Station Detroit, 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.