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Marine Weather and Tides
Version 3.4 |
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported. 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 7:35AM | Sunset 7:37PM | Monday September 25, 2017 1:08 PM EDT (17:08 UTC) | Moonrise 11:56AM | Moonset 9:57PM | Illumination 25% |  |
Marine Forecasts
EDIT (on/off) Help| LMZ849 Pentwater To Manistee Mi- 1140 Am Edt Mon Sep 25 2017 Rest of today..Southwest winds around 10 knots. Sunny. Waves around 1 foot. Tonight..Southeast winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Tuesday..Southwest winds 10 to 15 knots. Mostly Sunny. A slight chance of showers and Thunderstorms in the afternoon. Waves around 1 foot. Tuesday night..Southwest winds 10 to 20 knots veering northwest after midnight. Mostly cloudy. A chance of showers and Thunderstorms in the evening, then a slight chance of showers overnight. Waves 1 to 3 feet building to 2 to 4 feet toward daybreak. | LMZ849 Expires:201709252115;;914514 FZUS53 KGRR 251540 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1140 AM EDT Mon Sep 25 2017 For waters within five nautical miles of shore on Lake Michigan LMZ849-252115- |
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 251107 afdgrr area forecast discussion national weather service grand rapids mi 707 am edt Mon sep 25 2017 latest update... aviation Synopsis Issued at 328 am edt Mon sep 25 2017 two more days of record high temperatures across most of southwest michigan then the first cold front comes through early Wednesday lowering high temperatures from near 90 to near 70 (which is close to normal now). A second cold front comes through on Friday bringing more fall like temperatures and some lake enhanced rain showers with it. Any showers with the cold front early Wednesday will be widely scattered and not produce much rainfall, even were it does rain. The rainfall on Friday will be more widespread but being lake enhanced will mostly be near the lake michigan shore. Short term (today through Wednesday) issued at 328 am edt Mon sep 25 2017 we get today and Tuesday in the current record warm weather pattern, then a significant change will occur and we will have a rather progressive upper air pattern into next week. This is one of those henry rule events. We have a closed upper low over the southwest CONUS and until we get a system strong enough and close enough in wavelength it will stay there. We in fact do have such a system currently near the dateline. By tomorrow the wave lenght gets short enough to push the low currently over the southwest CONUS northeast over the top of the longwave ridge, which is over the eastern conus. However this is why we have only a very low chance for showers with the front. The longwave ridge is still there as the front comes through so all the good deep forcing is over northern michigan and into ontario canada. It is over upper michigan and ontario, north of lake superior where the best 1000 850 moisture transport is Wednesday morning ahead of the front. In fact there is not even all that much instability, down here, the most unstable CAPE is mostly less than 500 j kg early Wednesday morning as the front comes through. So I am thinking only widely scattered shower with the outside chance of a thunderstorm. Meanwhile we are still in the warm stream of air so expect highs both today and Tuesday to be from around 90 to the lower 90s. There will be some cirrus clouds today which is partly from the upper level outflow from hurricane maria. This should not be enough to keep us from braking more record highs however for today and Tuesday. |
Long term (Wednesday night through Sunday) issued at 328 am edt Mon sep 25 2017 the transition to more fall-like weather will continue for the latter part of the week and into the weekend. There will be the chance for scattered showers Thursday night and Friday. The pattern should be fairly zonal on Thursday, bringing us seasonally cool temps. But then an upper trough deepens over the great lakes by Friday and this should actually bring temps to below normal values that should persist into the weekend. The models have trended deeper with this trough which also increases the chance for rain in the Thursday night and Friday time frame. This doesn't look like a drought-buster, but it would seem to be enough to settle the dust. There could be some lake effect showers into Friday afternoon and evening, but these look minimal as the air mass that follows the short wave appears quite dry. A large canadian high pressure pushes in for the weekend. Dry weather should return, but it does not look like we warm until next week. So expect a pleasantly cool and dry weekend. There could be some patchy frost Friday and Saturday nights toward u.S. 10. Aviation (for the 12z tafs through 12z Tuesday morning) issued at 707 am edt Mon sep 25 2017 there is some patchy light fog around early this morning but this fog should quickly mix out by 15z then just some cirrus clouds (for the most part) into this evening. More patchy fog to early Tuesday morning too but that this point I do not expect any persistent ifr fog. Marine Issued at 328 am edt Mon sep 25 2017 likely we will need a small craft advisory Wednesday once we get into the cold air. Hydrology Issued at 1245 pm edt Sun sep 24 2017 rivers are running around normal to below normal for the time of year. Meanwhile, the us drought monitor is indicating dry conditions across southern lower michigan. Near-record warmth is expected today and Monday. The next chance for rain is Wednesday, but it's not a good chance. No river issues are expected through the week. Grr watches warnings advisories Mi... None. Lm... None. Synopsis... Wdm short term... Wdm long term... Jk aviation... Wdm hydrology... 63 marine... Wdm |
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 | 50 min | SSW 6 G 8.9 | 79°F | 59°F | |||
| 45024 | 6 mi | 28 min | S 9.7 G 12 | 72°F | 70°F | 1 ft | 1017.3 hPa | 66°F |
| BSBM4 - Big Sable Point, MI | 8 mi | 88 min | S 11 G 15 | 79°F | 1017.6 hPa | |||
| MEEM4 - Manistee Harbor, MI | 21 mi | 88 min | SSW 7 G 8.9 | 79°F | 1017.3 hPa |
Wind History for Ludington, MI
(wind in knots) EDIT (on/off) Help| 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 | 10 AM | 11 AM | 12 PM | 1 PM | |
| Last 24hr | SW G11 | SW G7 | SW G12 | SW G8 | SW | SW | S | E | E | E | E | NE | E | E | E | NE | E | E | E | E | SE | S G9 | SW | SW G6 |
| 1 day ago | SW G10 | SW G7 | SW G8 | SW | SW G8 | SW | -- | E | E | E | E | E | E | E | E | E | E | E | E | E | E | S | SW | SW G8 |
| 2 days ago | SW G13 | SW G15 | SW G14 | SW G10 | SW | W | SE | SE | E G4 | E | E | S | SW G15 | S G14 | S G8 | S G16 | S G14 | S G13 | S G12 | S G12 | S G11 | SW G10 | SW | SW G8 |
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 | 13 min | SSW 3 | 10.00 mi | Fair | 84°F | 59°F | 43% | 1016.3 hPa |
| Manistee County - Blacker Airport, MI | 24 mi | 12 min | Var 6 | 10.00 mi | Fair | 88°F | 61°F | 40% | 1017 hPa |
Wind History from LDM (wind in knots)
| 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 | 10 AM | 11 AM | 12 PM | 1 PM | |
| Last 24hr | W | W | SW | SW | SW | SW | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | Calm | Calm | S | S | W |
| 1 day ago | SW | SW | SW | SW | SW | SW | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | S | S |
| 2 days ago | SW G15 | SW | SW | S | S | S | N | S | Calm | Calm | Calm | Calm | Calm | E | S | SE | SE | E | SE | S | S | S | SW | SW |
Tide / Current Tables for
EDIT RT Ports Option Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of GreatLakes EDIT  |
Wind Forecast for Grand Rapids, MI (13,3,4,5)
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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. |