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Marine Weather and Tides
Version 3.4 |
10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 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 8:06AM | Sunset 5:12PM | Sunday December 15, 2019 9:13 AM EST (14:13 UTC) | Moonrise 8:55PM | Moonset 11:11AM | Illumination 85% |  |
LMZ845 South Haven To Holland Mi- 405 Am Est Sun Dec 15 2019
.small craft advisory in effect until 11 am est this morning...
Early this morning..Northwest winds 20 to 25 knots. Cloudy with scattered snow showers and areas of light freezing drizzle. Waves 5 to 7 feet.
Today..Northwest winds 15 to 25 knots becoming west 5 to 15 knots. Cloudy with isolated snow showers. Waves 5 to 7 feet.
Tonight..Southwest winds 5 to 10 knots. Mostly cloudy with a slight chance of snow. Waves 1 to 3 feet.
Monday..Northeast winds 5 to 10 knots backing north late in the day. Partly Sunny. Waves 1 foot or less.
Monday night..North winds 10 to 20 knots. Mostly cloudy with a slight chance of snow. Waves 1 to 2 feet building to 2 to 4 feet toward daybreak.
Tuesday..Northwest winds 15 to 25 knots. Mostly Sunny. Waves 4 to 6 feet.
Wednesday..Northwest winds to 30 knots decreasing to 10 to 20 knots late in the day. Partly Sunny with a chance of snow showers. Waves 6 to 8 feet.
Thursday..Southwest winds 10 to 20 knots. Partly Sunny. Waves 2 to 4 feet.
.small craft advisory in effect until 11 am est this morning...
Early this morning..Northwest winds 20 to 25 knots. Cloudy with scattered snow showers and areas of light freezing drizzle. Waves 5 to 7 feet.
Today..Northwest winds 15 to 25 knots becoming west 5 to 15 knots. Cloudy with isolated snow showers. Waves 5 to 7 feet.
Tonight..Southwest winds 5 to 10 knots. Mostly cloudy with a slight chance of snow. Waves 1 to 3 feet.
Monday..Northeast winds 5 to 10 knots backing north late in the day. Partly Sunny. Waves 1 foot or less.
Monday night..North winds 10 to 20 knots. Mostly cloudy with a slight chance of snow. Waves 1 to 2 feet building to 2 to 4 feet toward daybreak.
Tuesday..Northwest winds 15 to 25 knots. Mostly Sunny. Waves 4 to 6 feet.
Wednesday..Northwest winds to 30 knots decreasing to 10 to 20 knots late in the day. Partly Sunny with a chance of snow showers. Waves 6 to 8 feet.
Thursday..Southwest winds 10 to 20 knots. Partly Sunny. Waves 2 to 4 feet.
LMZ845 Expires:201912152100;;812561
FZUS53 KGRR 150906
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
405 AM EST Sun Dec 15 2019
For waters within five nautical miles of shore on Lake Michigan
LMZ845-152100-
7 Day Forecast for Marine Location Near Fennville, MI
Hourly EDIT Helplocation: 42.65, -86.09 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS63 KGRR 151118 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 618 AM EST Sun Dec 15 2019
LATEST UPDATE . Aviation
SYNOPSIS. Issued at 313 AM EST Sun Dec 15 2019
- Snow Showers Ending This Morning
- System Passes By to the South Monday into Monday Night
- Lake Effect Snow Showers and Colder Tuesday into Wednesday
- Dryer Through the Rest of the Week
DISCUSSION. (Today through next Saturday) Issued at 313 AM EST Sun Dec 15 2019
Precipitation has transitioned over to snow this morning with light accumulations already being seen on top of an icy glaze from last night's freezing drizzle. Only light snow accumulations of one inch or less are expected before snow ends by the late morning. Highest accumulations will be along and west of US-131 and north of I-96. Slick roads can be expected due light snow in addition to any residual glazing of ice from freezing drizzle last night.
For the system Monday into Monday night, model trends continue to suggest a more southerly track, yielding most of the higher snow totals well to our south and east. That being said, it is still within the realm of possibility that areas and south of I-94 may see light snow accumulation of less than an inch by Tuesday morning, particularly near the Jackson area.
By Tuesday, the flow turns northwesterly as an upper level trough digs into the Great Lakes. Favorable conditions will support lake effect snow showers Tuesday into Wednesday as 850mb temperatures drop into the negative teens and low level moisture increases. Light snowfall accumulations will be possible, leading to some travel impacts for lakeshore counties Tuesday into Wednesday morning.
Lake effect snow diminishes Wednesday afternoon, then conditions turn quiet to end the week. We will see a break in precipitation into next weekend, with more mild temperatures in the mid 30s.
AVIATION. (For the 12Z TAFS through 12Z Monday morning) Issued at 618 AM EST Sun Dec 15 2019
Snow continues this morning with only minor restrictions to visibilities at times. Otherwise MVFR ceilings continue this morning. Snow will gradually taper off by mid-day at which point ceilings will begin to open up towards VFR. Early Monday morning a system will pass by to the south bringing a slight chance for snow mainly for the southern TAF sites (AZO, BTL, JXN), but confidence in impactful weather remains low so we chose to keep it out of the TAF for now.
MARINE. Issued at 313 AM EST Sun Dec 15 2019
Hazardous small craft conditions continue this morning. High pressure will move in later today leading to improved conditions with weaker winds and lower waves. Quiet conditions will continue until Tuesday as winds turn northwesterly and build waves towards 5 to 8 feet through Wednesday.
GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . Small Craft Advisory until 11 AM EST this morning for LMZ844>849.
SYNOPSIS . Honor DISCUSSION . Honor AVIATION . Honor MARINE . Honor
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 | 11 mi | 61 min | W 15 G 18 | 28°F | 35°F | 1015.7 hPa | 22°F | |
| SVNM4 - South Haven, MI | 20 mi | 43 min | W 14 G 19 | 28°F | ||||
| MKGM4 - Muskegon, MI | 42 mi | 33 min | N 12 G 15 | 27°F | 1018.1 hPa | 19°F | ||
| SJOM4 - St. Joseph, MI | 44 mi | 73 min | WNW 12 G 15 | 28°F | 1017.9 hPa (+3.3) |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 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 | 6 AM | 7 AM | 8 AM | |
| Last 24hr | NE G9 | NE | N | NW | NW | NW | NW G17 | NW | W G21 | W | W | W | NW G23 | W | W G24 | W G23 | W | W | W | W | NW | NW | W | W G20 |
| 1 day ago | S | S | S | S | S | S | SE | S | SE | S | -- | E | E | E | E | E | E | E | E | E | NE | N | NE | NE |
| 2 days ago | E G18 | SE G17 | SE G15 | SE G23 | SE | S G22 | SE G21 | SE G24 | SE G21 | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
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 | 7 mi | 20 min | WNW 8 | 6.00 mi | Light Snow | 28°F | 21°F | 75% | 1017.8 hPa |
| South Haven, South Haven Area Regional Airport, MI | 22 mi | 18 min | NW 7 | 10.00 mi | Overcast | 28°F | 19°F | 72% | 1017.3 hPa |
Link to 5 minute data for KBIV
Wind History from BIV (wind in knots)
| 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 | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | NE | Calm | Calm | NW | NW | NW | NW G17 | NW G18 | NW G22 | NW G24 | NW G20 | NW G21 | NW G19 | NW G20 | NW G20 | W G18 | W G24 | W G19 | W | W G19 | NW G16 | NW G18 | W | NW |
| 1 day ago | S | S | S | S | W | SW | S | Calm | NW | Calm | E | Calm | Calm | Calm | Calm | Calm | E | Calm | Calm | Calm | N | Calm | Calm | N |
| 2 days ago | SE | SE | S | S | S G23 | S G26 | S G24 | S | S G21 | S | S | S | S | S | S | S | SW | S | S | S | S | S | S | S |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map
(on/off) Help Weather Map
GEOS 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 (9,2,3,4)
(on/off) Help
Ground Weather Radar Station Grand Rapids/Muskegon, MI
(on/off) Help
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