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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 6:58AM | Sunset 8:36PM | Friday August 23, 2019 5:50 PM EDT (21:50 UTC) | Moonrise 11:51PM | Moonset 1:46PM | Illumination 42% |  |
LMZ846 Holland To Grand Haven Mi- 405 Pm Edt Fri Aug 23 2019
Through early evening..Northwest winds 15 to 20 knots. Sunny. Waves 1 to 3 feet.
Tonight..North winds 10 to 20 knots veering east after midnight. Clear. Waves 1 to 3 feet.
Saturday..East winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Saturday night..East winds 10 to 15 knots. Mostly clear. Waves 1 foot or less.
Sunday..Southeast winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Sunday night..Southeast winds 10 to 20 knots. Partly cloudy. Waves 1 to 2 feet.
Monday..South winds 15 to 20 knots. Mostly cloudy with a chance of showers and Thunderstorms. Waves 1 to 3 feet.
Tuesday..West winds 15 to 20 knots. Mostly Sunny with a chance of showers and Thunderstorms. Waves 3 to 5 feet.
Wednesday..West winds 10 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
Through early evening..Northwest winds 15 to 20 knots. Sunny. Waves 1 to 3 feet.
Tonight..North winds 10 to 20 knots veering east after midnight. Clear. Waves 1 to 3 feet.
Saturday..East winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Saturday night..East winds 10 to 15 knots. Mostly clear. Waves 1 foot or less.
Sunday..Southeast winds 10 to 15 knots. Sunny. Waves 1 foot or less.
Sunday night..Southeast winds 10 to 20 knots. Partly cloudy. Waves 1 to 2 feet.
Monday..South winds 15 to 20 knots. Mostly cloudy with a chance of showers and Thunderstorms. Waves 1 to 3 feet.
Tuesday..West winds 15 to 20 knots. Mostly Sunny with a chance of showers and Thunderstorms. Waves 3 to 5 feet.
Wednesday..West winds 10 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
LMZ846 Expires:201908240800;;098370
FZUS53 KGRR 232006
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
405 PM EDT Fri Aug 23 2019
For waters within five nautical miles of shore on Lake Michigan
LMZ846-240800-
7 Day Forecast for Marine Location Near Holland, MI
Hourly EDIT Helplocation: 42.77, -86.1 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrr 231926 afdgrr area forecast discussion national weather service grand rapids mi 325 pm edt Fri aug 23 2019 latest update... synopsis discussion marine Synopsis Issued at 325 pm edt Fri aug 23 2019 - dry and mild through Sunday - rain chances Monday through Tuesday - comfortable weather holds for next week Discussion (this evening through next Friday) issued at 325 pm edt Fri aug 23 2019 we have at least one period of weather from Monday into Tuesday that will have some impacts. There will potentially be another period of some weather late in the period, but that is a bit uncertain for now. Through early Monday, the weather is looking quite comfortable and quiet. The upper trough that has lingered over the area the last couple of days will exit to the east. This will allow the upper ridge axis to slowly build over the region. Cumulus cloud development will diminish a bit with the subsidence building in. We will also slowly warm a couple of degrees each day. The chance of rain will increase on Monday, and likely peak Monday night. A short wave to our SW will be pushed to the NE as a larger amplitude short wave arrives from the west. This initial short wave will help bring decent moisture up and over the area. Then, the stronger short wave with the better dynamics will interact with the moisture to bring good chances of rain. The timing as of now does not look conducive for a lot of severe weather. The front should clear out then on Tuesday after some residual early showers and storms with the frontal passage. It looks like we should end up with some cooler and drier weather. The heart of the cold pool aloft stays north, keeping instability clouds and showers north. |
We will be likely seeing another short wave arriving into the region in the Thu or Fri time frame. The timing is uncertain, so we have small chances for that whole period. The rain chances can be fine tuned with plenty of time before then. Aviation (for the 18z tafs through 18z Saturday afternoon) issued at 126 pm edt Fri aug 23 2019 impacts look like they will be little to non for aviation interests for the next 24 hours. Cumulus development will be sct- bkn this afternoon, but will be allVFR with bases above 4k ft. These clouds should be quick to dissipate this evening with the loss of diurnal heating, leaving clearing skies and light E ne winds. Can not rule out some shallow ground fog near warmer bodies of water. The dry air in place should keep fog away from the terminals. We expect another round of cumulus development for Saturday afternoon also. This will again beVFR, and will have little to no impacts. E NE winds are once again expected. Marine Issued at 325 pm edt Fri aug 23 2019 no marine headlines expected to be needed through much of this weekend. Winds maybe up around 15 knots during the daylight hours with land lake interactions, but not high enough through early Sunday for headlines. Winds will start to increase late Sunday with the approach of the next system. Once the winds increase late Sunday, winds may remain up for the most part through mid week, with headlines likely then. Grr watches warnings advisories Mi... None. Lm... None. Synopsis... Njj discussion... Njj aviation... Njj marine... Njj |
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 | 6 mi | 56 min | NW 13 G 14 | 68°F | 1021.7 hPa | 56°F | ||
| 45029 | 13 mi | 20 min | NNW 12 G 16 | 69°F | 71°F | 2 ft | 1022.1 hPa | 55°F |
| SVNM4 - South Haven, MI | 27 mi | 40 min | NNW 12 G 14 | 68°F | ||||
| 45168 | 29 mi | 20 min | WNW 12 G 14 | 68°F | 72°F | 2 ft | 1022.6 hPa | 53°F |
| 45161 | 32 mi | 50 min | NNE 5.8 G 7.8 | 71°F | 70°F | 1 ft | 1022.5 hPa (-0.7) | |
| MKGM4 - Muskegon, MI | 34 mi | 30 min | ENE 8 G 11 | 75°F | 1021.9 hPa | 47°F | ||
| SJOM4 - St. Joseph, MI | 51 mi | 50 min | N 8.9 G 12 | 68°F | 1023.4 hPa (-1.0) |
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 | 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 | |
| Last 24hr | NW G15 | N G13 | N G9 | N G12 | NE | N | N | NE G10 | NE | NE G11 | NE | NE G10 | NE | NE G13 | NE G12 | NE | NE G11 | NE G11 | NE G9 | NW | NW | NW | NW | NW |
| 1 day ago | NW | NW | N | N | NE | NE | E | -- | N | N | NE G14 | NE | NE | NE | NE G13 | NE G12 | NE G11 | NE G12 | N G10 | N G11 | NW | NW | NW | NW |
| 2 days ago | SW | N G13 | NE G7 | -- | NW | SW | SW | SW | SW | SW | S | SW | SW | SW | S | SW | W | W | W | SW | SW | W | W | W |
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 |
| Holland - West Michigan Regional Airport, MI | 1 mi | 57 min | NNW 8 | 10.00 mi | Mostly Cloudy | 73°F | 55°F | 55% | 1022.3 hPa |
Link to 5 minute data for KBIV
Wind History from BIV (wind in knots)
| 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 | 2 PM | 3 PM | 4 PM | 5 PM | |
| Last 24hr | NE | G15 | NE | Calm | Calm | E | NE | NE | E | NE | NW | NW | NW | |||||||||||
| 1 day ago | W | N | N | Calm | N | Calm | Calm | Calm | NE | NE | E | E G15 | E | N | Calm | N G17 | ||||||||
| 2 days ago | NE | Calm | SW | SW | Calm | Calm | Calm | W | W | NW | W | W | W |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
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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 (17,4,5,8)
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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. |