Monday, March25, 2019 L-36.com


Marine Weather and Tides
Ludington, 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 7:37AMSunset 8:04PM Monday March 25, 2019 5:59 AM EDT (09:59 UTC) Moonrise 12:00AMMoonset 9:38AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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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LMZ849 Pentwater To Manistee 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. Mostly cloudy with a chance of snow showers. Heavy freezing spray. Waves 2 to 5 feet.
Saturday..Southwest winds 10 to 20 knots. Mostly cloudy. Heavy freezing spray. Waves 2 to 4 feet.
Saturday night..Northwest winds 15 to 25 knots. Mostly cloudy with a chance of snow showers. Heavy freezing spray. Waves 3 to 5 feet.
Sunday..Northwest winds 15 to 25 knots. Partly Sunny 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.
LMZ849 Expires:201901260415;;919599 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 LMZ849-260415-


7 Day Forecast for Marine Location Near Ludington, MI
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location: 43.96, -86.44     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 250715
afdgrr
area forecast discussion
national weather service grand rapids mi
315 am edt Mon mar 25 2019
latest update...

synopsis discussion

Synopsis
Issued at 154 am edt Mon mar 25 2019
- cooler than normal today and Tuesday
- moderating temperatures Wednesday and Thursday
- bigger storm possible Friday night to Saturday

Discussion (today through next Sunday)
issued at 154 am edt Mon mar 25 2019
cold air advection... Especially in the lower layers of the
atmosphere was underway early this morning. The thermal trough at
925 mb passes slowly through this evening. As a result colder
than normal temperatures are expected today and into Tuesday. The
atmosphere will be dry so a decent amount of sunshine is
forecasted both days. Despite this the temperature will struggle
to diurnally climb much because of the thermal trough around.

High pressure will track southeastward from the upper plains
today to the central appalachians on Wednesday... Strengthening as
it does. Strong warm advection develops here in michigan on
Wednesday as a result. Thus moderating temperatures are
forecasted. It looks like many areas will top out in the 50s. The
gulf is largely cut off during this time so the moisture will be
lagging. Low humidity levels will occur for Wednesday afternoon
supporting good drying conditions.

There are some bigger differences amongst the models for the
Friday night to Saturday storm system. In addition this will
initially be fragmented with multiple pieces that will try to
come together over the region which may or may not happen. Because
of this the overall confidence is low at this time. Generally
though... Winter and QPF impacts could occur. Most models show
northerly winds strengthening across the canadian prairies
Thursday drawing down a cold arctic airmass into ontario for
Thursday into Friday. This is important because as the next storm
system comes ashore on the california coast Wednesday a mid to
upper level piece of it breaks free and crosses the
rockies... Entering the western plains on Friday. This system then
taps gulf moisture as the southerly low level winds strengthen.

The gulf moisture then is shown to meet up with the colder air
heading south from ontario for Friday night into Saturday in
michigan. Thus with a strengthening thermal moisture boundary
across the area and synoptic lift riding up this
zone... Precipitation should blossom throughout the cwa. Right now
it appears the the main storm track will be just south of the cwa
putting the forecast area on the colder side of the storm. As a
result it looks like Friday night to Saturday will be a rain to
wet snow scenario for parts of the CWA with the precipitation
potentially heavy at times. At this time the greatest snow risk is
over the northern half of the cwa... Closer to the colder airmass.

For now we will maintain a rain snow mix given the uncertainty.

Aviation (for the 06z tafs through 06z Monday night)
issued at 1146 pm edt Sun mar 24 2019
latest IR imagery shows clearing from north to south. However,
neph analysis also shows a narrow wedge of MVFR CIGS over mid
michigan extending west as far as ionia. It's possible that could
still clip grr, but the chance is small. Otherwise, skies will
become mostly clear by mid morning.

Hydrology
Issued at 330 pm edt Sun mar 24 2019
rivers across most of southwest lower michigan are back within their
banks, except for a few sites on the grand and muskegon rivers.

Standing water has also receded across the area with only a few
roads remaining closed in newaygo and kent counties. No flood
warnings or advisories remain in effect.

River levels will continue to gradually fall into mid week as mainly
dry weather is forecast into Wednesday. The snow that remains over
the muskegon basin should undergo a slow and steady melt as
temperatures warm back up.

Grr watches warnings advisories
None.

Synopsis... Mjs
discussion... Mjs
aviation... 04
hydrology... 63


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDTM4 - 9087023 - Ludington, MI 1 mi47 min 26°F 10°F

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ludington, Mason County Airport, MI2 mi64 minNE 410.00 miFair26°F12°F56%1025.4 hPa
Manistee County - Blacker Airport, MI24 mi63 minNE 710.00 miFair24°F14°F65%1028.3 hPa

Wind History from LDM (wind in knots)
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Last 24hrSW8W6W5W4W4W6W6N8N9N8N11
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N8N7NE6NE4N5N5NE5NE3NE3NE5
1 day agoCalmCalmCalmS3SW4W6SW8W8SW10
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SW10SW9SW8SW8SW7S5S5S5S4SW13
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2 days agoN13
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N3CalmCalmCalmCalmCalmCalmCalmCalm

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 (5,6,7,8)
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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.