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Marine Weather and Tides
Version 3.4 |
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 6:09AM | Sunset 9:15PM | Friday May 26, 2017 10:21 PM EDT (02:21 UTC) | Moonrise 6:18AM | Moonset 9:18PM | Illumination 2% |  |
Marine Forecasts
EDIT (on/off) Help| LMZ872 Lake Michigan From Sheboygan To Port Washington Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Port Washington To North Point Light Wi 5 Nm Offshore To Mid Lake- Lake Michigan From North Point Light To Wind Point Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Wind Point Wi To Winthrop Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Whitehall To Pentwater Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Grand Haven To Whitehall Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Holland To Grand Haven Mi 5 Nm Offshore To Mid Lake- Lake Michigan From South Haven To Holland Mi 5 Nm Offshore To Mid Lake- 852 Pm Cdt Fri May 26 2017 Sheboygan Wi To Pentwater Mi South To Winthrop Harbor Il To South Haven Mi... .dense fog advisory in effect until 1 pm cdt Saturday... Rest of tonight..Northeast winds 5 to 10 kt. Slight chance of showers this evening. Areas of dense fog. Waves 1 to 2 ft. Saturday..Northeast winds 5 to 10 kt veering to southeast 10 to 15 kt. Areas of dense fog in the morning. Waves 1 ft or less. Saturday night..Southeast winds 5 to 10 kt becoming east 10 to 20 kt. Chance of showers overnight. Waves 1 ft or less. Sunday..Southeast winds 10 to 20 kt veering to west 10 to 15 kt. Showers likely with a chance of Thunderstorms in the morning...then chance of showers in the afternoon. Waves 1 ft or less. Sunday night..West winds 10 to 20 kt. Waves 1 to 2 ft building to 1 to 3 ft. Monday..West winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of showers in the afternoon. Waves 1 to 3 ft. Monday night..West winds 10 to 20 kt. Waves 1 to 3 ft. Tuesday..Southwest winds 10 to 20 kt becoming west. Waves 1 to 2 ft. Wednesday..West winds 10 to 20 kt. Waves 1 to 3 ft. | LMZ872 Expires:201705270800;;261809 FZUS63 KLOT 270152 GLFLM OPEN LAKE FORECAST FOR LAKE MICHIGAN NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 852 PM CDT FRI MAY 26 2017 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN. WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED. .SYNOPSIS...WEAK LOW PRESSURE OF 29.8 INCHES OVER CENTRAL ILLINOIS THIS EVENING...WILL MOVE EAST TO THE MID ATLANTIC REGION SATURDAY. ANOTHER AREA OF LOW PRESSURE OF 29.7 INCHES WILL DEVELOP OVER OKLAHOMA SATURDAY AND MOVE TO NEAR LAKE HURON SUNDAY AFTERNOON... AS A SECOND LOW OF 29.4 INCHES OVER MANITOBA MOVES EAST INTO ONTARIO SATURDAY. THE LOW OVER LAKE HURON AND THE LOW OVER ONTARIO WILL MERGE SUNDAY NIGHT AND REMAIN NEARLY STATIONARY NEAR JAMES BAY THROUGH THE MIDDLE OF NEXT WEEK. LMZ669-671-673-675-870-872-874-876-270800- |
7 Day Forecast for Marine Location Near Montague, MI
Hourly EDIT Helplocation: 43.14, -87.03 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrr 262300 afdgrr area forecast discussion national weather service grand rapids mi 700 pm edt Fri may 26 2017 latest update... aviation Synopsis Issued at 330 pm edt Fri may 26 2017 showers and isolated thunder will move across areas mainly along and south of i-96 tonight. Some areas south of i-94 could pick up as much as a half inch of rain. Then as we open up the holiday weekend, Saturday will be dry and comfortable, with highs in the 70s. However a more widespread area of showers and storms will arrive late Saturday night, that will linger into Sunday evening. All areas should see a quarter to a half inch of rain in this period. More widely scattered showers and storms will be possible memorial day into Tuesday, before we dry for much of the rest of the week. We will stay at or slightly below normal next week, with most daytime highs in the upper 60s to mid 70s. Short term (this evening through Sunday night) issued at 330 pm edt Fri may 26 2017 an MCS will slide east across southern lower mi tonight. Then a break from the rain will occur Saturday, for the best day of the holiday weekend. Then another period of showers and storms moves in by late Saturday night and continues on and off Sunday and Sunday evening. Mcs was located over north central il as of 19z and is expected to track east, then east southeast tonight. The jet dynamics and best instability remains to our south. So only expect showers on the north end of the mcs, with embedded thunder. Much of the rain will stay along and south of i-96, with only hit and miss pcpn north. A period of moderate to heavy will be possible along the i-94 corridor where some areas may see up to a half inch of rain. However any severe risk will stay well to our south. I removed lowered pops toward daybreak as most of the pcpn should be east after 09z. Weak surface high pressure and upper ridging builds back into the region for Saturday. Will keep the forecast dry, however their appears to be a fair amount of lingering low level moisture, especially south. For that reason I have gone with more clouds on Saturday, but still most areas should see partly sunny conditions into the afternoon. Trimmed MAX temps to hold in the 70s, and staying in the lower 70s for the cloudier SE cwa. More showers and storms arrive late Saturday night as the upper ridge moves east and a short wave moves into the upper midwest. This wave eventually becomes an upper low into Sunday night. A surface front and low pressure arrives around mid day, so this should spread a fairly widespread area of pcpn across the area. Maintaining the |
likely pops. Long term (Monday through Friday) issued at 330 pm edt Fri may 26 2017 a cooler and unsettled wx pattern will develop early next week as the upper level trough digs and amplifies over the great lakes region. High temperatures Monday and Tuesday will reach the 60's with fairly extensive diurnal cloud cover and scattered instability rain showers. Showers will be enhanced from time to time by several shortwaves that will rotate around the base of the upper trough. Temperatures should moderate a bit toward late next week as the upper trough axis moves east of our region and h8 temps moderate. High temperatures should reach the lower to perhaps middle 70's by Thursday. A high pressure ridge will build in and bring fair wx late in the week. Aviation (for the 00z tafs through 00z Saturday evening) issued at 658 pm edt Fri may 26 2017 regional radar shows an area of showers with embedded storms moving across northern il and lake michigan and will soon cross over southwest michigan. This pcpn will affect the TAF sites through midnight or so and then dry wx should prevail for the rest of the period.VFR CIGS vsybys expected through the period. Marine Issued at 330 pm edt Fri may 26 2017 waves will be held to two feet or less through Sunday night. This leave the threat of thunder as the main concern for boaters this holiday weekend. Highest thunder chance will come late Saturday night through Sunday afternoon. Hydrology Issued at 217 pm edt Fri may 26 2017 river levels in the upper grand and the kalamazoo basins are running above normal for late may while elsewhere the levels are closer to normal. Rain totals generally under a half inch in southern michigan Friday night, then across much of the area on Sunday, will likely not be enough to produce flooding. Grr watches warnings advisories Mi... None. Lm... None. Synopsis... Jk short term... Jk long term... Ostuno aviation... 04 hydrology... Cas marine... Jk |
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 |
| 45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI | 32 mi | 91 min | N 1.9 G 3.9 | 49°F | 47°F | 1011.5 hPa (+0.3) | 49°F | |
| 45161 | 36 mi | 41 min | Calm G 0 | 53°F | 52°F | 1011 hPa | ||
| MKGM4 - Muskegon, MI | 37 mi | 31 min | E 2.9 G 2.9 | 56°F | 1011.1 hPa | 54°F | ||
| 45029 | 43 mi | 31 min | ENE 1.9 G 3.9 | 53°F | 53°F | 1 ft | 1011.3 hPa | 50°F |
| 45013 | 44 mi | 42 min | N 3.9 G 3.9 | 47°F | 1011.7 hPa | |||
| MLWW3 - Milwaukee, WI | 46 mi | 31 min | NNE 1.9 G 1.9 | 50°F | ||||
| PWAW3 - Port Washington, WI | 48 mi | 41 min | W 1 G 2.9 | 54°F | 1012.2 hPa |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 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 | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | NW | N | NW | NW | NW | NW | NW | NW | E G5 | SW | S | SW | SW | S | S | SW | W | SW | W | NW | NW | N | NE G6 | NE |
| 1 day ago | NE G10 | NE G13 | NE G14 | NE G16 | NE G13 | NE G12 | NE G12 | NE G15 | N G10 | N | NW | NE G11 | NW | N | NW | NW | N | NW | NW | NW | NW | NW | NW | NW |
| 2 days ago | NE | NE G8 | NE | NE | NE | NE | NE G9 | NE | NE G14 | NE G10 | NE | NE G12 | NE G14 | E G12 | NE G11 | E G11 | NE G13 | NE G15 | E G14 | E G13 | E G22 | NE G7 | NE G7 | N |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Muskegon, Muskegon County Airport, MI | 40 mi | 26 min | N 0 | 10.00 mi | Light Rain | 57°F | 55°F | 93% | 1011 hPa |
Wind History from MKG (wind in knots)
| 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 | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | NW | N | W | NW | W | NW | NW | Calm | N | N | NE | Calm | SW | S | SW | SW | SW | SW | N | SW G18 | NW | NW | Calm | Calm |
| 1 day ago | NE | NE | NE | NE | NE | NE | NE | N | N | N | N | NE | N | N | N | N | NE | NW | W | W | NW | NW | NW | |
| 2 days ago | NE | E | NE | NE | NE | N | NE | NE | N | NE | NE | NE | NE | NE | NE | E | NE G19 | NE | NE | E | E | NE | NE | NE |
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 (22,6,7,8)
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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. |