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Marine Weather and Tides
Version 3.4 |
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. 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. |
| Sunrise 5:54AM | Sunset 7:44PM | Monday April 23, 2018 4:39 AM CDT (09:39 UTC) | Moonrise 12:45PM | Moonset 2:33AM | Illumination 56% |  |
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- 246 Am Cdt Mon Apr 23 2018 Sheboygan Wi To Pentwater Mi South... Today..Northeast winds 10 to 15 kt increasing to 10 to 20 kt. Waves 2 to 4 ft. Tonight..Northeast winds 10 to 20 kt becoming east 10 to 15 kt. Slight chance of rain showers overnight. Waves 1 to 3 ft. Tuesday..Northeast winds 5 to 10 kt becoming north 10 to 15 kt. Chance of rain showers in the morning. Waves 1 to 2 ft. Tuesday night..North winds 10 to 20 kt increasing to 30 kt. Waves 4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft. Wednesday..North winds to 30 kt diminishing to 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft. Wednesday night..North winds 10 to 20 kt becoming northwest 5 to 10 kt overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. Thursday..Southwest winds 10 to 20 kt becoming south. Waves 1 to 3 ft. Friday..North winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of rain showers. Waves 4 to 7 ft occasionally to 9 ft. | LMZ878 Expires:201804231530;;366775 FZUS63 KLOT 230746 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Chicago/Romeoville IL 246 AM CDT Mon Apr 23 2018 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...High pressure of 30.4 inches is centered over New England with ridging extending west across the Great Lakes. Low pressure of 29.7 inches is over western Tennessee and will meander over the area through Tuesday then shift to the mid Atlantic Coast by early Wednesday. A cold front will move across Lake Michigan Tuesday night. Another 30.4 inch high will build across the Central Plains Tuesday night with a ridge extending into the western Great Lakes, which will shift to the Ohio Valley Thursday. Low pressure of 29.5 inches will move from Hudson Bay Wednesday night to northern Quebec Thursday night as a trailing cold front pushes across Lake Michigan. LMZ080-669-671-673-675-777-779-870-872-874-876-878-231530- |
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 230813 afdiwx area forecast discussion national weather service northern indiana 413 am edt Mon apr 23 2018 Synopsis Issued at 341 am edt Mon apr 23 2018 a weak and slow moving low pressure area will move north of the ohio river and bring a chance for light rain and sprinkles to the forecast area from this afternoon through Tuesday night. Mainly dry weather is forecast for Wednesday and Thursday. Highs today will be in the 60s to around 70. Lows tonight should be in the upper 40s. Highs Tuesday through Thursday will be in the mid 50s to lower 60s all 3 days. Short term (today and tonight) issued at 325 am edt Mon apr 23 2018 an upper low was near memphis early this morning. This system was drifting east, but should curve north as an interaction with an upstream system takes place. Some bands of light rain or light showers are likely to spread north of the ohio river with a chance for some rain reaching areas east and south of warsaw by this evening. More of a widespread light rain is likely tonight over much of the area into early Tuesday. Precipitation amounts will be light as the bulk of the system passes to the southeast. Highs today will approach 70 near the michigan border; however, cooler highs should prevail farther south where clouds and possible rain hold temps down. Long term (Tuesday through Sunday) issued at 325 am edt Mon apr 23 2018 |
lingering areas of light rain or showers should end Wednesday morning as the upper low moves east. Temperatures should be a little below normal from Tuesday thru Thursday with highs in the middle 50s to lower 60 each day. One last system may bring some light rain Friday. Limited cold air behind this system may allow lows to drop to 34-37 Friday night. Otherwise, much warmer weather is ahead just past next weekend as an upper level ridge builds east. Aviation (for the 06z tafs through 06z Monday night) issued at 147 am edt Mon apr 23 2018 vfr flight conditions through the forecast period. Upper level vortex translating from ak into western tn through the period with increasing amount of mid level moisture advancing northward. Slight chance of sprinkles light rain into kfwa late in the period, though confidence sufficiently low enough for only vcsh mention at this time. Iwx watches warnings advisories In... None. Mi... None. Oh... None. Lm... None. Synopsis... Skipper short term... Skipper long term... Skipper aviation... Murphy 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 |
| 45168 | 32 mi | 40 min | NE 7.8 G 9.7 | 44°F | 40°F | 1 ft | 1024.4 hPa (-1.0) | 27°F |
| SVNM4 - South Haven, MI | 34 mi | 40 min | ENE 8 G 11 | 45°F | ||||
| SJOM4 - St. Joseph, MI | 34 mi | 40 min | NNE 1.9 G 2.9 | 44°F | 1023.4 hPa (-0.6) | |||
| HLNM4 - 9087031 - Holland, MI | 44 mi | 52 min | ENE 6 G 8 | 44°F | 1023.5 hPa | 29°F | ||
| WHRI2 - Waukegan Harbor, IL | 47 mi | 60 min | NNE 8.9 G 11 | 44°F | ||||
| 45029 | 47 mi | 40 min | ENE 5.8 G 7.8 | 42°F | 38°F | 1025.4 hPa (-0.5) | 31°F | |
| KNSW3 - Kenosha, WI | 48 mi | 40 min | 41°F | 1024 hPa (-0.4) | ||||
| CHII2 - Chicago, IL | 50 mi | 50 min | NE 8.9 G 9.9 | 44°F | 32°F |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 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 | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | E | E | E | E | SE G10 | E G10 | E G13 | E G18 | NE G14 | E G13 | NW G14 | N G19 | N G17 | N G16 | N | N | E | E | E | E | E | NE | NE | NE |
| 1 day ago | E | E | E | NW | W | N | NW | W | SW | SW | W | NW | W | NW | NW | NW | N | N | NE | E | E | E | E | E |
| 2 days ago | E | S | SE | SW | SW | W | W | NW | NW | W | W | NW | NW | N | N | N | N | NE | E | E | E | N | E | E |
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 | 47 min | ENE 5 | 10.00 mi | Fair | 44°F | 23°F | 43% | 1023.2 hPa |
Wind History from BEH (wind in knots)
| 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 | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | Calm | Calm | E | E | E | E G17 | E | E G18 | NE G20 | E | E G19 | E G18 | NE | E | Calm | Calm | E | E | E | E | E | E | E | |
| 1 day ago | Calm | Calm | Calm | Calm | Calm | Calm | W | SW | W | W | NW | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | |||
| 2 days ago | E | Calm | Calm | W | Calm | E | NW | W | W | NW | NW | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm |
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 Northern Indiana, IN (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. |