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Marine Weather and Tides
Version 3.4 |
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues. |
| Sunrise 6:03AM | Sunset 9:30PM | Wednesday June 20, 2018 9:34 AM EDT (13:34 UTC) | Moonrise 12:59PM | Moonset 1:04AM | Illumination 46% |  |
Marine Forecasts
EDIT (on/off) Help| LMZ849 Pentwater To Manistee Mi- 452 Am Edt Wed Jun 20 2018 Today..Northeast winds around 5 knots backing north. Mostly Sunny. Waves 1 foot or less. Tonight..Northeast winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Thursday..Northeast winds 5 to 10 knots. Sunny. Waves 1 to 2 feet. Thursday night..East winds around 10 knots. Mostly clear. Waves 1 to 2 feet. | LMZ849 Expires:201806201515;;820791 FZUS53 KGRR 200852 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 452 AM EDT Wed Jun 20 2018 For waters within five nautical miles of shore on Lake Michigan LMZ849-201515- |
7 Day Forecast for Marine Location Near Ludington, MI
Hourly EDIT Helplocation: 43.96, -86.44 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrr 201226 afdgrr area forecast discussion national weather service grand rapids mi 826 am edt Wed jun 20 2018 latest update... aviation Synopsis Issued at 257 am edt Wed jun 20 2018 showers and a few thunderstorms can be expected today across the southern half of lower michigan. Some local flooding is possible as heavy rain combines with slow moving storms. The showers should diminish this afternoon with a spell of dry weather beginning tonight and lasting through Thursday. Short term (today through Friday) issued at 257 am edt Wed jun 20 2018 some potential for localized heavy rain this morning across the southern half of the forecast area. Precipitable water is close to 1.9 inches and storms are slow moving. Downpours across berrien county ATTM show mrms instantaneous precip rates spiking over 3 inches an hour with rain gage reports showing 1.5 inches in 45 minutes. This area of rain is progged to expand north and east this morning and we will have to watch for areas of training and backbuilding. The rain should begin to taper off this afternoon as weak sfc wave translates east and sfc front sinks south in its wake with drier air advecting in from the north. Fair weather with comfortable temperature and humidity follows for Thursday, then moisture spreads north again Thursday night and Friday as next sfc wave approaches. Long term (Friday night through Tuesday) issued at 257 am edt Wed jun 20 2018 rain will continue Saturday and into early Sunday as a cut-off low pressure system drifts through the great lakes. Model guidance continues to shift the heaviest rainfall ever so slightly southeast with each new run which isn't surprising given the lack of real synoptic "guidance" (e.G. Cut-off lows sometimes drift wherever they please). At this point I still feel confident in the chance for precipitation this weekend but the heaviest just may stay outside of our area depending on the final track of the system. A compact (and rather potent) shortwave trough will swing through the great lakes Sunday and provide the "guidance" to kick the low east into canada. Breaks in cloud cover with diurnal heating will promote pockets of modest instability ahead of the upper-level wave supporting the possibility of a few thunderstorms Sunday |
evening. However, coverage looks fairly limited at this point in time. The area will then become dominated by a large high pressure system early next week with dry and seasonable temperatures expected. Another low pressure system may impact the area toward the end of next week, but we won't worry about the details of such at this point in time. Aviation (for the 12z tafs through 12z Thursday morning) issued at 826 am edt Wed jun 20 2018 ifr ceilings may linger at azo btl and possibly jxn for an hour or two, but gradual improvement to MVFR is expected later this morning. Also currently pockets of ifr around rqb and mop which should lift soon too. Scattered shra will also linger through midday especially around azo btl jxn. Improvement toVFR from north to south expected this afternoon evening. Light winds generally from the northeast. Marine Issued at 257 am edt Wed jun 20 2018 winds and waves will be relatively light the next couple days. Winds will mostly be offshore, so waves will be highest away from shore. Hydrology Issued at 1234 pm edt Tue jun 19 2018 recent rainfall has resulted in a slight rise on a few area rivers. With river levels running near normal, no flooding is expected. More rain is possible today through Wednesday night and again Friday through Saturday night. Scattered to numerous showers and thunderstorms may develop. Generally expect less than an inch of rain, with locally heavy rainfall possible with the storms. This may result in localized flooding. Grr watches warnings advisories Mi... None. Lm... None. Synopsis... Ostuno short term... Ostuno long term... Borchardt aviation... Cas hydrology... 63 marine... Ostuno |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| LDTM4 - 9087023 - Ludington, MI | 1 mi | 47 min | E 5.1 G 7 | 62°F | 56°F | |||
| 45024 | 6 mi | 35 min | E 3.9 G 5.8 | 63°F | 63°F | 1 ft | 1014.4 hPa (-0.0) | 59°F |
| BSBM4 - Big Sable Point, MI | 8 mi | 55 min | E 1 G 8 | 63°F | 1014.2 hPa |
Wind History for Ludington, MI
(wind in knots) EDIT (on/off) Help| 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | E | E | NE G8 | E G8 | E G9 | E G9 | NE G7 | NE G10 | E G6 | E G6 | E G7 | E | NE | E | E | E | NE | NE | E | E | E G9 | E G8 | SE G9 | E |
| 1 day ago | -- | -- | W | W | W | W G6 | NW G5 | N | NW | NW | N | NE | N | NE G6 | NE G7 | NE | NE | NE | NE | E G6 | NE | E | NE | NE |
| 2 days ago | S G17 | S G20 | SW G20 | SW G20 | SW G17 | SW G17 | SW G15 | SW G17 | SW G17 | SW G17 | S G24 | S | S G23 | SW G21 | SW G23 | SW G23 | -- | SE | S | -- | SW | SW G5 | S | NW G11 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Ludington, Mason County Airport, MI | 2 mi | 40 min | N 0 | 10.00 mi | Overcast | 63°F | 57°F | 83% | 1013.2 hPa |
| Manistee County - Blacker Airport, MI | 24 mi | 39 min | N 0 | 10.00 mi | Overcast | 65°F | 59°F | 81% | 1014.9 hPa |
Wind History from LDM (wind in knots)
| 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | -12 PM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | NE | E | E | E | E | E | NE | E | E | E | E | SE | E | Calm | E | E | Calm | Calm | E | Calm | E | E | SE | E |
| 1 day ago | Calm | Calm | SW | SW | SW | W | N | N | N | N | N | N | Calm | N | NE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E |
| 2 days ago | SW G17 | SW G17 | SW G18 | SW G17 | S | SW G20 | SW G18 | SW G20 | S G17 | S G21 | S G21 | S G20 | SW | SW G21 | SW G21 | W G22 | Calm | Calm | Calm | Calm | SW | W | Calm | NW |
Tide / Current Tables for
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GOES Local Image of GreatLakes 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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Grand Rapids, MI (9,2,3,4)
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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. |