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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 6:41AM | Sunset 6:43PM | Monday September 25, 2017 5:29 PM CDT (22:29 UTC) | Moonrise 11:54AM | Moonset 10:03PM | Illumination 27% |  |
Marine Forecasts
EDIT (on/off) Help| LMZ878 Lake Michigan From Michigan City In To St. Joseph Mi 5 Nm Offshore To Mid Lake- 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 Winthrop Harbor To Wilmette Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Wilmette Harbor Il To Michigan City In 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- Lake Michigan From St. Joseph To South Haven Mi 5 Nm Offshore To Mid Lake- 249 Pm Cdt Mon Sep 25 2017 Sheboygan Wi To Pentwater Mi South... Tonight..Southeast winds 10 to 15 kt becoming south. Waves 1 to 2 ft. Tuesday..South winds 10 to 15 kt increasing to 10 to 20 kt becoming southwest late. Slight chance of showers and Thunderstorms in the afternoon. Waves 1 to 3 ft. Tuesday night..West winds 10 to 20 kt becoming northwest 15 to 25 kt. Waves 1 to 2 ft building to 4 to 6 ft occasionally to 8 ft. Wednesday..Northwest winds 15 to 25 kt becoming north. Waves 4 to 6 ft occasionally to 8 ft. Wednesday night..North winds 10 to 20 kt. Waves 3 to 5 ft. Thursday..Northwest winds 10 to 15 kt becoming west 10 to 20 kt. Waves 2 to 4 ft. Thursday night..West winds 15 to 25 kt becoming northwest to 30 kt. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. Friday..Northwest winds to 30 kt becoming north. Waves 7 to 10 ft occasionally to 13 ft. Saturday..Northeast winds 10 to 20 kt diminishing to 5 to 10 kt in the afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. | LMZ878 Expires:201709260330;;922688 FZUS63 KLOT 251949 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Chicago/Romeoville IL 249 PM CDT Mon Sep 25 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...Low pressure of 29.8 inches over eastern Iowa will move to Lake Superior on Tuesday...trailing a cold front across the lake late Tuesday afternoon and evening. The low will then deepen to 29.6 inches as it pulls away into western Quebec by early Wednesday. High pressure of 30.2 inches will spread slowly east from the Plains Wednesday...with weaker ridging of 30.1 inches extending across southern Lake Michigan by early Thursday. Low pressure of 29.9 inches will pass just northeast of the Lakes by early Friday...with another cold front pushing across the lake. High pressure of 30.4 inches will build across the western Lakes Saturday. LMZ080-669-671-673-675-777-779-870-872-874-876-878-260330- |
7 Day Forecast for Marine Location Near St. Joseph, MI
Hourly EDIT Helplocation: 42.45, -86.93 debug
Area Discussion for - Northern Indiana, IN
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kiwx 251756 afdiwx area forecast discussion national weather service northern indiana 155 pm edt Mon sep 25 2017 Synopsis Issued at 155 pm edt Mon sep 25 2017 unseasonably warm weather will continue through Tuesday with high temperatures from the upper 80s to around 90. A notably cooler air mass will then build into the region thereafter for the latter half of the week and next weekend with highs generally 65 to 70. Short term (tonight and Tuesday) issued at 155 pm edt Mon sep 25 2017 staunch ridging sfc and aloft to finally breakdown on Tue ahead of ejecting WRN trough up across the upper midwest. Low level thermal trough while somewhat subdued will provide for another unseasonably warm day with upper 80s to 90 expected. Long term (Wednesday through Sunday) issued at 155 pm edt Mon sep 25 2017 no change from prior thinking this period. Lead SW disturbance tracking into the james bay vicinity valry Wed as trailing cold |
frontal zone washes out across the oh valley. Secondary SW follows fri with more substantive low level cold advection burst which persists into Sat before moderating. Exchange in airmass will be most welcome through given recent heat wave with dys 5-6 temp anomalies dropping about a cat below normal. Aviation (for the 18z tafs through 18z Tuesday afternoon) issued at 112 pm edt Mon sep 25 2017 little more than some passing cirrus will be noted for both airports, resulting inVFR conditions through the period. Iwx watches warnings advisories In... None. Mi... None. Oh... None. Lm... None. Synopsis... T murphy short term... T long term... T aviation... Fisher visit us at |
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 | 16 mi | 40 min | SE 5.8 G 5.8 | 74°F | 71°F | 1 ft | 1013.8 hPa (-1.5) | |
| 45168 | 32 mi | 20 min | N 1.9 G 3.9 | 77°F | 75°F | 1014 hPa | 67°F | |
| SJOM4 - St. Joseph, MI | 34 mi | 30 min | N 1 G 1.9 | 83°F | 1014.6 hPa (-2.0) | |||
| SVNM4 - South Haven, MI | 34 mi | 30 min | NNE 2.9 G 2.9 | 81°F | ||||
| 45026 - St. Joseph, MI | 36 mi | 20 min | ENE 3.9 G 3.9 | 79°F | 74°F | 1013.8 hPa | 69°F | |
| HLNM4 - 9087031 - Holland, MI | 44 mi | 42 min | Calm G 1 | 77°F | 1013.9 hPa | |||
| 45174 | 44 mi | 20 min | ESE 9.7 G 9.7 | 76°F | 72°F | 1 ft | 70°F | |
| WHRI2 - Waukegan Harbor, IL | 47 mi | 50 min | SSW 5.1 G 6 | 78°F | ||||
| 45029 | 47 mi | 20 min | SE 1.9 G 3.9 | 75°F | 71°F | 1 ft | 1013.8 hPa | 65°F |
| 45170 | 48 mi | 20 min | ENE 5.8 G 5.8 | 78°F | 74°F | 69°F | ||
| KNSW3 - Kenosha, WI | 48 mi | 30 min | SSE 8.9 G 12 | 76°F | 1013.2 hPa (-1.0) | |||
| CHII2 - Chicago, IL | 50 mi | 40 min | ESE 16 G 16 | 81°F | 63°F |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | -12 PM | 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 | |
| Last 24hr | N | N | E | E | E G7 | SE G12 | E | E G17 | SE G18 | SE G15 | SE G14 | E | SE | SE | SE | S | S | S | S | S | S | S | S | |
| 1 day ago | N | NW | -- | E | E | E | E | E | E G11 | E | E G8 | SE G18 | E G7 | N | E G9 | E | S | SW | S | S | W | NW | NW | N |
| 2 days ago | SW | S | SE | E | E | E | E | E | E | E G14 | SE G9 | SE | SE | S | S | S | S | S | S | S | W | NW | -- | NW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Southwest Michigan Regional Airport, MI | 34 mi | 37 min | SE 3 | 10.00 mi | Fair | 87°F | 55°F | 34% | 1013.8 hPa |
Wind History from BEH (wind in knots)
| 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 | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | |
| Last 24hr | SE | Calm | E | E | E | Calm | Calm | E | SE | SE | SE | SE | SE | Calm | SE | S | S | S | SE | Calm | Calm | SE | S | SE |
| 1 day ago | Calm | Calm | Calm | E | SE | SE | E | Calm | E | E | E | E | SE | E | SE | SE | SE | SE | S | SE | SE | S G16 | SE | SE |
| 2 days ago | Calm | Calm | E | E | Calm | Calm | E | E | SE | SE | SE | SE | E | Calm | Calm | Calm | Calm | S | SE | E | NW | NW | N | NW |
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 Northern Indiana, IN (18,4,5,8)
(on/off) Help |  |  |
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. |