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Marine Weather and Tides
Version 3.4 |
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 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. |
| Sunrise 8:09AM | Sunset 5:42PM | Monday January 20, 2020 10:32 AM EST (15:32 UTC) | Moonrise 4:20AM | Moonset 2:07PM | Illumination 21% |  |
LMZ847 Grand Haven To Whitehall Mi- 406 Am Est Mon Jan 20 2020
Early this morning..Northeast winds 10 to 15 knots. Mostly cloudy with a slight chance of snow showers. Waves 1 to 2 feet.
Today..Northeast winds around 10 knots backing northwest late in the day. Mostly cloudy with a slight chance of snow showers. Waves 1 to 2 feet.
Tonight..Northwest winds 10 to 15 knots backing west toward daybreak. Partly cloudy. Waves 1 to 2 feet.
Tuesday..West winds 15 to 20 knots. Partly Sunny. Waves 2 to 4 feet.
Tuesday night..Southwest winds 20 to 25 knots. Partly cloudy. Waves 5 to 7 feet building to 6 to 8 feet toward daybreak.
Wednesday..Southwest winds to 30 knots. Mostly cloudy. Waves 6 to 9 feet.
Thursday..South winds 10 to 20 knots. Cloudy with a chance of rain and snow showers. Waves 3 to 5 feet.
Friday..East winds 10 to 15 knots. Rain showers likely and a chance of snow showers. Waves around 1 foot.
Early this morning..Northeast winds 10 to 15 knots. Mostly cloudy with a slight chance of snow showers. Waves 1 to 2 feet.
Today..Northeast winds around 10 knots backing northwest late in the day. Mostly cloudy with a slight chance of snow showers. Waves 1 to 2 feet.
Tonight..Northwest winds 10 to 15 knots backing west toward daybreak. Partly cloudy. Waves 1 to 2 feet.
Tuesday..West winds 15 to 20 knots. Partly Sunny. Waves 2 to 4 feet.
Tuesday night..Southwest winds 20 to 25 knots. Partly cloudy. Waves 5 to 7 feet building to 6 to 8 feet toward daybreak.
Wednesday..Southwest winds to 30 knots. Mostly cloudy. Waves 6 to 9 feet.
Thursday..South winds 10 to 20 knots. Cloudy with a chance of rain and snow showers. Waves 3 to 5 feet.
Friday..East winds 10 to 15 knots. Rain showers likely and a chance of snow showers. Waves around 1 foot.
LMZ847 Expires:202001202100;;231558
FZUS53 KGRR 200907
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
406 AM EST Mon Jan 20 2020
For waters within five nautical miles of shore on Lake Michigan
LMZ847-202100-
7 Day Forecast for Marine Location Near Muskegon, MI
Hourly EDIT Helplocation: 43.23, -86.26 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS63 KGRR 201138 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 638 AM EST Mon Jan 20 2020
LATEST UPDATE . Aviation
SYNOPSIS. Issued at 304 AM EST Mon Jan 20 2020
- Dry until Wednesday night
- Precipitation chances increasing Wednesday night and continuing
- Rain and snow this weekend with no impacts expected
DISCUSSION. (Today through next Sunday) Issued at 304 AM EST Mon Jan 20 2020
-- Dry until Wednesday night --
No changes to previous thinking. The pattern will strongly favor dry conditions. Specifically, we will see strong subsidence with a sharp upper ridge just upstream and concomitant broad, seasonably strong, surface high pressure over most of the Eastern U.S.
-- Precipitation chances increasing Wednesday night and continuing --
Only change of note from previous forecast is to introduce a chance for freezing rain/drizzle Thursday morning at the leading edge of the approaching precipitation moving into our dry airmass. This is hinted at by the deterministic GFS/ECMWF runs. This should be short- lived prior to our transition to rain, snow, or both. However, this freezing precipitation may coincide with the Thursday morning commute and has some potential to produce travel impacts.
Otherwise, as already noted, the precipitation in question is associated with a cold front that moves east into the area, drawing a narrow plume of moisture from the Gulf of Mexico ahead of it. Trajectories are less than favorable and the resident airmass over the Gulf will be quite dry (a lot more continental polar than marine) due to the previously mentioned surface high. Accordingly, precipitation amounts should be limited with no impacts expected.
-- Rain and snow this weekend with no impacts expected --
Looks like better than even chances for precipitation Saturday with most ECE ensemble members on board. However, the driver is a cutoff upper low and this can be subject to considerable positional forecast errors. Indeed, there are several members keeping things dry for us with the surface low positioned more over the Southeastern U.S. This is the minority report at this time, however, but would not be totally surprised to see increasing ensemble membership in this direction. Regardless, no impacts are expected because precipitation amounts will be on the light side and falling as rain and/or snow.
AVIATION. (For the 12Z TAFS through 12Z Tuesday morning) Issued at 638 AM EST Mon Jan 20 2020
No IFR conditions are expected at any terminal through the period.
A solid layer of MVFR ceilings (above fuel alternate threshold of 2000 ft AGL) presently covers Western Lower Michigan. This will be slow to erode and will likely persist all day by Lake Michigan, including the KMKG and KAZO terminals. KGRR and KBTL will be in the transition zone but should break out later today. Farther east, confidence is relatively high for continued VFR at KJXN and KLAN.
MARINE. Issued at 304 AM EST Mon Jan 20 2020
For the first time in a while, we are bereft of marine headlines. As noted previously, this will likely change by Tuesday afternoon in response to strong southwesterly flow developing. Waves near 8 feet are still expected near the points Wednesday. Waves should gradually drop below Small Craft Advisory (SCA) thresholds during the day Thursday. Will be discussing this further with adjacent offices to coordinate specifics prior to issuing the SCA headline, which will probably ship later today.
HYDROLOGY. Issued at 330 PM EST Sun Jan 19 2020
No new news on the ice jam at Rogers Heights just upstream of the Rogers Dam on the Muskegon River Per Emergency Management. we believe the ice jam is still in place, things are stable and no flooding is occurring at this point. We have kept the Flood Advisory out for that stretch of river into Tuesday as flooding may develop. Ice formation is ongoing in rivers across the area per webcams and photos from staff. Would not be surprised to see a few more ice jams crop up in the next 24 to 48 hours. We will dip into the single digits and teens which will make ice formation efficient tonight.
Otherwise, rivers remain high but continue to fall in most areas. The exception continues to be the lower end of the Grand River near Robinson TWP where backwater from Lake Michigan and the crest working down the grand from last week are producing high flows.
GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . None.
SYNOPSIS . TJT DISCUSSION . TJT AVIATION . TJT HYDROLOGY . Duke MARINE . TJT
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 |
| MKGM4 - Muskegon, MI | 4 mi | 22 min | S 2.9 G 4.1 | 23°F | 1037.3 hPa | 17°F | ||
| HLNM4 - 9087031 - Holland, MI | 32 mi | 50 min | 22°F | 32°F | 1034.3 hPa | 18°F | ||
| LDTM4 - 9087023 - Ludington, MI | 50 mi | 56 min | 25°F | 16°F |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 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 | 10 AM | |
| Last 24hr | W | NW | N | N G24 | N G22 | N | N G19 | N | N | N | N G11 | NE G8 | NE | NE G11 | NE | NE G15 | NE G12 | NE G13 | NE G10 | NE G11 | NE | NE | E | E |
| 1 day ago | S | SW G29 | W G28 | W G31 | W G31 | W | W G30 | W | W G40 | W | W | W G38 | W G35 | W | W | W | W | W G27 | W | W G25 | W | W G23 | W | W G24 |
| 2 days ago | E G19 | E G17 | E G16 | E G17 | E G15 | E G13 | E G14 | SE G12 | SE G15 | E G19 | E G19 | E G19 | E G18 | E | E | E G24 | E G25 | E G20 | E | E G16 | E G22 | E G19 | SE G17 | SE G17 |
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 |
| Muskegon, Muskegon County Airport, MI | 3 mi | 37 min | N 0 | 9.00 mi | Light Snow | 23°F | 16°F | 74% | 1036.4 hPa |
| Fremont Municipal Airport, MI | 20 mi | 37 min | N 0 | 10.00 mi | Overcast | 20°F | 20°F | 100% | 1034.5 hPa |
Link to 5 minute data for KMKG
Wind History from MKG (wind in knots)
| 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 | 10 AM | |
| Last 24hr | NW | N G26 | N | N G23 | N G20 | N G20 | N | N | N | N | N | Calm | Calm | N | NE | E | NE | NE | NE | Calm | Calm | Calm | Calm | Calm |
| 1 day ago | SE | SW G24 | W G25 | W G24 | W G29 | W G30 | W G30 | W G28 | W G28 | W G33 | W G34 | W G29 | W G32 | W G26 | W G31 | W G25 | W G21 | W G20 | W G21 | W G20 | W | NW G20 | NW G20 | |
| 2 days ago | SE | SE | SE | SE | E | E | E | E | SE | E | E G20 | E | E | E G26 | E G25 | E G23 | E G24 | SE | E G21 | SE | SE | E | SE | SE |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map
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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 (10,2,3,4)
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Ground Weather Radar Station Grand Rapids/Muskegon, MI
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