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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:55AM | Sunset 8:25PM | Monday August 26, 2019 2:49 AM EDT (06:49 UTC) | Moonrise 1:17AM | Moonset 4:51PM | Illumination 19% |  |
LMZ845 South Haven To Holland Mi- 1005 Pm Edt Sun Aug 25 2019
Rest of tonight..Southeast winds 15 to 20 knots. Mostly cloudy. Waves 1 foot or less.
Monday..Southeast winds 15 to 20 knots. Rain showers likely and a slight chance of Thunderstorms. Waves 1 to 2 feet.
Monday night..South winds 20 to 25 knots. Rain showers and a slight chance of Thunderstorms. Waves 1 to 3 feet building to 3 to 5 feet after midnight.
Tuesday..West winds to 30 knots decreasing to 10 to 20 knots. Mostly Sunny with a chance of rain showers and a slight chance of Thunderstorms. Waves 3 to 5 feet.
Tuesday night..West winds 10 to 20 knots. Mostly clear. Waves 2 to 4 feet.
Wednesday..West winds 15 to 25 knots. Sunny. Waves 5 to 7 feet.
Thursday..Southwest winds 15 to 20 knots. Sunny. Waves 2 to 4 feet.
Friday..West winds 10 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
Rest of tonight..Southeast winds 15 to 20 knots. Mostly cloudy. Waves 1 foot or less.
Monday..Southeast winds 15 to 20 knots. Rain showers likely and a slight chance of Thunderstorms. Waves 1 to 2 feet.
Monday night..South winds 20 to 25 knots. Rain showers and a slight chance of Thunderstorms. Waves 1 to 3 feet building to 3 to 5 feet after midnight.
Tuesday..West winds to 30 knots decreasing to 10 to 20 knots. Mostly Sunny with a chance of rain showers and a slight chance of Thunderstorms. Waves 3 to 5 feet.
Tuesday night..West winds 10 to 20 knots. Mostly clear. Waves 2 to 4 feet.
Wednesday..West winds 15 to 25 knots. Sunny. Waves 5 to 7 feet.
Thursday..Southwest winds 15 to 20 knots. Sunny. Waves 2 to 4 feet.
Friday..West winds 10 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
LMZ845 Expires:201908260900;;212831
FZUS53 KGRR 260205
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
1005 PM EDT Sun Aug 25 2019
For waters within five nautical miles of shore on Lake Michigan
LMZ845-260900-
7 Day Forecast for Marine Location Near Grand Ledge, MI
Hourly EDIT Helplocation: 42.75, -84.75 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrr 260638 afdgrr area forecast discussion national weather service grand rapids mi 238 am edt Mon aug 26 2019 latest update... synopsis discussion marine Synopsis Issued at 238 am edt Mon aug 26 2019 - showers and a few thunderstorms today - areas of heavier rain tonight Discussion (today through next Sunday) issued at 238 am edt Mon aug 26 2019 moisture returns today with showers moving in late this morning and becoming more numerous this afternoon. Thunderstorm coverage and intensity will be limited by marginal instability but heavy rain potential exists overnight with p-wats around 2 inches as the cold frontal rain bands move through, mbe vectors look less conducive for flooding than 24 hours ago as storm motions should remain greater than 10 knots during this event but some minor flooding will be possible if any training develops. The rain moves off to the east Tuesday afternoon but isolated showers may return Wednesday as upper trough axis moves through and lapse rates are steep enough for diurnal enhancement of CU development. Lack of deep moisture should limit coverage across all but the northern zones where soundings show better potential. |
Then mostly fair and cool for Thursday but scattered showers return Friday as sfc cold front pushes through. Aviation (for the 06z tafs through 06z Monday night) issued at 1246 am edt Mon aug 26 2019 a strong surge of moisture will move over the TAF sites later today ahead of a sfc low. Showers are expected to develop during the day and CIGS vsbys will take a turn toward ifr MVFR. Limited instability will likely keep the threat of thunderstorms on the low side. However, high precipitable water values will result in potentially heavy downpours that could negatively impact braking action. Marine Issued at 238 am edt Mon aug 26 2019 winds and waves will result in hazardous conditions for small craft and for swimmers today through Tuesday afternoon. There will also be some hazardous conditions on Wednesday along with coastal beach erosion in strong onshore winds. Grr watches warnings advisories Mi... Beach hazards statement from 10 am edt this morning through Tuesday afternoon for miz037-043-050-056-064-071. Lm... Small craft advisory from 10 am this morning to 5 pm edt Tuesday for lmz844>849. Synopsis... Ostuno discussion... Ostuno aviation... 04 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 |
| HLNM4 - 9087031 - Holland, MI | 78 mi | 50 min | E 13 G 16 | 65°F | 1015.6 hPa | 57°F | ||
| MKGM4 - Muskegon, MI | 90 mi | 30 min | ESE 9.9 G 14 | 65°F | 1016.2 hPa | 54°F | ||
| SBLM4 - Saginaw Bay Light #1, MI | 91 mi | 50 min | ESE 19 G 21 | 67°F | 1018.6 hPa (-1.4) |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 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 | 11 PM | 12 AM | 1 AM | |
| Last 24hr | E | E | E | E | E | E G11 | E G13 | E G15 | E G16 | E | E G14 | E G18 | E G12 | E G15 | E G23 | E G17 | E G17 | E G17 | E G8 | E G10 | E G9 | E G9 | E G13 | E G14 |
| 1 day ago | E | E | E | E G10 | E | E G9 | E G8 | E | NE G13 | E G15 | NE G13 | E G15 | E G15 | NE G12 | E G12 | E G10 | E G11 | E | E | E G7 | NE G9 | E G12 | E G9 | |
| 2 days ago | NE G10 | NE | NE G13 | NE G12 | NE | NE G11 | NE G11 | NE G9 | NW | NW | NW | NW | NW | NW G17 | NW | NW | N | NE | N | NE | E |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Capital Region International Airport, MI | 8 mi | 1.9 hrs | E 6 | 10.00 mi | Fair | 62°F | 53°F | 73% | 1018.6 hPa |
| Charlotte, Fitch H Beach Airport, MI | 13 mi | 3.9 hrs | E 4 | 10.00 mi | Fair | 63°F | 52°F | 68% | 1019 hPa |
| Mason, Mason Jewett Field Airport, MI | 21 mi | 3.8 hrs | ESE 5 | 10.00 mi | Fair | 62°F | 52°F | 73% | 1020 hPa |
| Ionia County Airport, MI | 21 mi | 3.8 hrs | E 5 | 10.00 mi | Fair | 62°F | 52°F | 71% | 1019 hPa |
Link to 5 minute data for KLAN
Wind History from LAN (wind in knots)
| 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 | 11 PM | 12 AM | 1 AM | |
| Last 24hr | Calm | Calm | E | E | E | E | E G16 | E | SE | E | E G19 | E G19 | E G17 | E | SE G19 | SE | E | E | E | |||||
| 1 day ago | Calm | Calm | Calm | Calm | Calm | Calm | NE | NE | E | NE | E G16 | NE | NE | E G15 | NE | E G16 | NE | E | NE | NE | E | |||
| 2 days ago | Calm | Calm | Calm | Calm | N | NE | NE | N | E | N | N | NE | NE | NE | NE | NE |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Grand Rapids, MI (2,6,7,8)
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Ground Weather Radar Station Detroit, 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. |