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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 8:08AM | Sunset 5:11PM | Sunday December 15, 2019 7:29 PM EST (00:29 UTC) | Moonrise 8:52PM | Moonset 11:17AM | Illumination 82% | ![]() |
LMZ849 Pentwater To Manistee Mi- 405 Pm Est Sun Dec 15 2019
Through early evening..West winds 10 to 15 knots. Mostly Sunny. Waves 2 to 4 feet.
Tonight..West winds 5 to 10 knots. Partly cloudy. Waves 1 to 3 feet.
Monday..West winds 5 to 15 knots. Partly Sunny. Waves 1 to 3 feet.
Monday night..Northwest winds 10 to 15 knots. Mostly cloudy. Waves 1 to 3 feet.
Tuesday..West winds 15 to 25 knots. Partly Sunny. Waves 1 to 3 feet building to 3 to 5 feet.
Tuesday night..Northwest winds 20 to 25 knots. Mostly cloudy with a chance of snow showers. Waves 4 to 6 feet.
Wednesday..Northwest winds 15 to 25 knots decreasing to 10 to 15 knots late in the day. Mostly cloudy. Waves 4 to 6 feet.
Thursday..South winds 10 to 15 knots. Partly Sunny. Waves 2 to 3 feet.
Friday..South winds 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.
Through early evening..West winds 10 to 15 knots. Mostly Sunny. Waves 2 to 4 feet.
Tonight..West winds 5 to 10 knots. Partly cloudy. Waves 1 to 3 feet.
Monday..West winds 5 to 15 knots. Partly Sunny. Waves 1 to 3 feet.
Monday night..Northwest winds 10 to 15 knots. Mostly cloudy. Waves 1 to 3 feet.
Tuesday..West winds 15 to 25 knots. Partly Sunny. Waves 1 to 3 feet building to 3 to 5 feet.
Tuesday night..Northwest winds 20 to 25 knots. Mostly cloudy with a chance of snow showers. Waves 4 to 6 feet.
Wednesday..Northwest winds 15 to 25 knots decreasing to 10 to 15 knots late in the day. Mostly cloudy. Waves 4 to 6 feet.
Thursday..South winds 10 to 15 knots. Partly Sunny. Waves 2 to 3 feet.
Friday..South winds 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.
LMZ849 Expires:201912160900;;839187
FZUS53 KGRR 152106
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
405 PM EST Sun Dec 15 2019
For waters within five nautical miles of shore on Lake Michigan
LMZ849-160900-
7 Day Forecast for Marine Location Near Ludington, MI
Hourly EDIT Helplocation: 43.96, -86.44 debug
Area Discussion for - Grand Rapids, MI
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS63 KGRR 152320 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 620 PM EST Sun Dec 15 2019
LATEST UPDATE . Aviation
SYNOPSIS. Issued at 235 PM EST Sun Dec 15 2019
- Storm system passes by to the south on Monday
- Lake effect snow showers late Tuesday into early Wednesday
- Cold for mid week
- Not as cold next weekend
DISCUSSION. (This evening through next Sunday) Issued at 235 PM EST Sun Dec 15 2019
The main challenges in the period deal with timing and amount of any impacts. To start there is an area of light snow in eastern Nebraska and western Iowa. This area of snow was tracking east . in our direction. Models show the lift weakening with this feature as it moves into Southern Lower Michigan late tonight into Monday morning. This will support a diminishing trend the light snow through the night into Monday morning. Still a small risk for a period of flurries or perhaps light snow exists for Southern Lower Michigan. Bufkit overviews do show a dry layer from 2000 to roughly 5000 ft. This likely is not enough to prevent some of the snow from reaching the ground. We will feature low POPs for measurable precipitation after midnight tonight for the Interstate 94 corridor.
Next up will be the lake effect snow later Tuesday into Wednesday. Deeper cyclonic flow and the arrival of an arctic airmass will support some impacts for parts of the region. Right now the models are showing the best lift arriving Tuesday evening after 00z as a 700 mb wave drops in from the northwest. This is when we will feature the highest POPs With a Lake Superior connection. the bands in northwest parts of our CWA will likely produce the most impacts . which could linger into Wednesday morning. Guidance shows a low level ridge building in for Wednesday afternoon and evening which should support decreasing and less organized snow shower activity. It is worth noting that the DGZ lowers close to the ground . under the cloud bases late Tuesday night into Wednesday which would likely alter the accumulation rate.
Deeper southwest flow develops for late in the week and through the weekend which will support a moderating trend to the temperatures.
AVIATION. (For the 00Z TAFS through 00Z Monday evening) Issued at 620 PM EST Sun Dec 15 2019
Broken MVFR clouds continue at many TAF sites as of this writing partly due to a lack of any real advection in the lowest few thousand feet. As such, opted to maintain MVFR clouds at many of the TAF sites through much of the TAF period with occasional breaks to VFR (OVC100 or above). Virga is expected at all TAF sites from midnight through about 18Z today though a few flurries can't be ruled out at AZO/BTL/JXN. Winds will remain light and variable through the entire TAF period.
MARINE. Issued at 235 PM EST Sun Dec 15 2019
With surface high pressure forecasted to ridge into the region tonight into Monday . the winds and waves are forecasted to remain relatively low. That will change for Tuesday. The wind is forecasted to strengthen out of the northwest as an arctic airmass spreads in through Wednesday Thus. hazardous small craft conditions are likely to redevelop. Freezing spray may be possible as well. High pressure ridges in for later Wednesday into Thursday. At this time it looks like conditions will improve somewhat then.
GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . None.
SYNOPSIS . MJS DISCUSSION . MJS AVIATION . Borchardt MARINE . MJS
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapStations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
LDTM4 - 9087023 - Ludington, MI | 1 mi | 65 min | WSW 4.1 G 8.9 | 26°F | 16°F | |||
BSBM4 - Big Sable Point, MI | 8 mi | 109 min | SW 8.9 G 13 | 25°F | 1019.6 hPa | |||
MEEM4 - Manistee Harbor, MI | 21 mi | 49 min | S 1.9 G 7 | 26°F | 1020.3 hPa |
Wind History for Ludington, MI
(wind in knots) EDIT (on/off)  Help8 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 | 6 PM | 7 PM | |
Last 24hr | W G15 | NW G15 | W G15 | NW G17 | NW G14 | NW G14 | NW G15 | NW G12 | NW G16 | NW G16 | N G11 | NW G12 | NW G10 | NW G15 | NW G9 | NW | NW G9 | W G8 | W G10 | W G9 | SW G8 | W | SW G11 | SW |
1 day ago | -- | NE | E | -- | -- | NE | E | E | -- | E | N | N | N | N G4 | N | NW G6 | NW G8 | W G11 | W G10 | W | W G11 | W G13 | W G14 | W G16 |
2 days ago | SW G28 | SW G15 | SW G14 | S | SW G20 | SW | SW G20 | SW G15 | SW G15 | SW G14 | SW G11 | SW G7 | N | N | N | W | W | NW | -- | W | W G10 | NW G5 | NW | NW G7 |
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 |
Ludington, Mason County Airport, MI | 2 mi | 33 min | SW 3 | 10.00 mi | Mostly Cloudy | 24°F | 15°F | 68% | 1019.3 hPa |
Manistee County - Blacker Airport, MI | 24 mi | 33 min | S 3 | 10.00 mi | Overcast | 24°F | 16°F | 71% | 1020.2 hPa |
Link to 5 minute data for KLDM
Wind History from LDM (wind in knots)
8 PM | 9 PM | 10 PM | 11 PM | -12 PM | 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 | 6 PM | 7 PM | |
Last 24hr | NW | NW G16 | NW G14 | NW G15 | N | NW G15 | NW G16 | N G17 | NW | NW G17 | NW | NW | NW | NW | NW | NW | NW | W | W | W | SW | W | SW | Calm |
1 day ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | N | Calm | NW | NW | NW | NW | NW | NW | W | NW | NW | NW | NW |
2 days ago | SW G26 | SW G23 | SW | SW | SW G19 | SW G20 | SW G17 | SW G14 | SW | SW | SW | SW | Calm | N | N | Calm | Calm | Calm | Calm | Calm | NW | NW | Calm | N |
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 (19,4,5,8)
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Ground Weather Radar Station Grand Rapids/Muskegon, MI
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