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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 7:57AM | Sunset 5:12PM | Thursday December 5, 2019 12:13 PM EST (17:13 UTC) | Moonrise 2:13PM | Moonset 1:05AM | Illumination 63% |  |
LMZ845 South Haven To Holland Mi- 1105 Am Est Thu Dec 5 2019
Rest of today..West winds 5 to 10 knots backing south 10 to 15 knots late in the day. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the day.
Tonight..Southwest winds 15 to 20 knots veering northwest to 30 knots toward daybreak. Mostly cloudy. Waves 2 to 3 feet building to 3 to 5 feet toward daybreak.
Friday..North winds to 30 knots decreasing to 15 to 20 knots late in the day. Partly Sunny. Waves 3 to 5 feet.
Friday night..North winds 10 to 20 knots veering east 5 to 10 knots late at night, then veering south toward daybreak. Partly cloudy. Waves 2 to 4 feet.
Saturday..Southwest winds 10 to 20 knots. Mostly Sunny. Waves 1 to 2 feet building to 2 to 4 feet.
Sunday..Southwest winds to 30 knots decreasing to 15 to 25 knots late in the day. Cloudy. Waves 5 to 7 feet.
Monday..West winds 5 to 10 knots veering northwest 10 to 15 knots late in the day. Cloudy with a chance of rain showers. Waves around 1 foot.
Rest of today..West winds 5 to 10 knots backing south 10 to 15 knots late in the day. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the day.
Tonight..Southwest winds 15 to 20 knots veering northwest to 30 knots toward daybreak. Mostly cloudy. Waves 2 to 3 feet building to 3 to 5 feet toward daybreak.
Friday..North winds to 30 knots decreasing to 15 to 20 knots late in the day. Partly Sunny. Waves 3 to 5 feet.
Friday night..North winds 10 to 20 knots veering east 5 to 10 knots late at night, then veering south toward daybreak. Partly cloudy. Waves 2 to 4 feet.
Saturday..Southwest winds 10 to 20 knots. Mostly Sunny. Waves 1 to 2 feet building to 2 to 4 feet.
Sunday..Southwest winds to 30 knots decreasing to 15 to 25 knots late in the day. Cloudy. Waves 5 to 7 feet.
Monday..West winds 5 to 10 knots veering northwest 10 to 15 knots late in the day. Cloudy with a chance of rain showers. Waves around 1 foot.
LMZ845 Expires:201912052200;;320556
FZUS53 KGRR 051605
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
1105 AM EST Thu Dec 5 2019
For waters within five nautical miles of shore on Lake Michigan
LMZ845-052200-
7 Day Forecast for Marine Location Near Breedsville, MI
Hourly EDIT Helplocation: 42.46, -86.13 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS63 KGRR 051111 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 611 AM EST Thu Dec 5 2019
LATEST UPDATE . Aviation
SYNOPSIS. Issued at 329 AM EST Thu Dec 5 2019
- Light snow is expected tonight along US-10; no impacts are anticipated.
- Friday and Saturday should be quiet with a good shot of sun during the latter.
- A period of cold temperatures and lake effect snow remains possible next week.
DISCUSSION. (Today through next Wednesday) Issued at 329 AM EST Thu Dec 5 2019
The large-scale pattern is largely unchanged from 24 hours ago with a trough across the east and ridge across the west enabling expansive northwest flow across the northern US. New features tonight are a wound up low pressure system in Nevada and a subtle shortwave along the central Canadian/US border embedded in the northwest flow. The latter feature is of most interest in the near- term.
As the ridge "portion" of the shortwave moves over the Great Lakes this afternoon, 850 mb temperatures will recover and the low-level stratus will scatter away. Mid-level moisture progs however look less promising with high clouds expected to develop by mid- afternoon. Highs today will be almost a spitting image of yesterday with mid 30s across central Lower Michigan and near 40 across the southwest. The trough "portion" of the shortwave will arrive after dark tonight anchored by a clipper system at the surface which is poised to track along the I-96 corridor from roughly midnight to daybreak. A dry air intrusion into the snow- growth layer will work against meaningful precipitation north of the low track, with progged low-level thermodynamic profiles suggesting low snow:water ratio snow grains are to be expected. As such, we're not expecting much more than a heavy dusting along US-10.
A punch of cold air in the wake of the trough will promote more low- level clouds during daylight hours Friday. However, as the upper- level pattern becomes more zonal Saturday, southwest low-level flow will kick our clouds away and give us the best chance to soak up the sun so far this month (and if we're being honest, in the coming week as well).
Sunday onward continues to look active as a cut-off low off the California coast is scooped up by a deepening trough diving out of western Canada. Whatever comes of those two features (combined or not) will swing through the Great Lakes around the Sunday night/Monday timeframe with blast of cold air and lake effect snow to follow Wednesday into Thursday. It's worth noting the 12Z mean 850 mb temperature at 12Z Wednesday came in around -20 C with an IQR of around 5 degrees signaling relatively high confidence in both the occurrence and anomalous magnitude of the cold air. With that said, there are still finer details to sort out for which we have plenty of time in the coming days.
AVIATION. (For the 12Z TAFS through 12Z Friday morning) Issued at 611 AM EST Thu Dec 5 2019
A few bands of borderline MVFR stratus will poke around through the morning hours with mid-level clouds becoming predominant by afternoon. Winds will be light and variable through most of the TAF period. A band of MVFR clouds will sweep from north to south after midnight tonight, potentially dipping down toward IFR toward the end of the TAF period. Winds will also become northerly toward the end of the TAF period. All precipitation is expected to remain north of the TAF sites.
MARINE. Issued at 329 AM EST Thu Dec 5 2019
Winds and waves will continue weakening today leading to relatively calm conditions on the waters of Lake Michigan. Another round of hazardous conditions to small crafts is possible Friday and again Saturday into Sunday. Conditions on Sunday may support minor lakeshore flooding and beach erosion from Grand Haven northward.
GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . Small Craft Advisory until 11 AM EST this morning for LMZ844>849.
SYNOPSIS . Borchardt DISCUSSION . Borchardt AVIATION . Borchardt MARINE . Borchardt
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 |
| SVNM4 - South Haven, MI | 9 mi | 44 min | WSW 8 G 8.9 | 38°F | ||||
| HLNM4 - 9087031 - Holland, MI | 22 mi | 62 min | W 8.9 G 11 | 38°F | 38°F | 1016.8 hPa | 29°F | |
| SJOM4 - St. Joseph, MI | 32 mi | 74 min | W 6 G 7 | 40°F | 1018.3 hPa (+1.0) | |||
| MKGM4 - Muskegon, MI | 54 mi | 34 min | WNW 7 G 7 | 37°F | 1018.2 hPa | 29°F |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 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 | 11 AM | |
| Last 24hr | W G27 | NW | NW | W | NW | NW | NW | W G32 | NW G30 | NW | NW | NW G31 | W | W G27 | NW | W | NW | NW G19 | NW | W G15 | NW | NW | W | W |
| 1 day ago | S | S G28 | SW | SW | SW G26 | SW | SW | SW G24 | SW G21 | SW | W G21 | W G20 | W | W | W | W | W | W | W | W G21 | W G23 | W | W G28 | W G28 |
| 2 days ago | NE G11 | N G11 | NE | E | NW | NW G7 | N G8 | E | E | E | E | E | E | S | W G14 | SW G16 | SW G17 | SW G20 | SW | SW | 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 |
| South Haven, South Haven Area Regional Airport, MI | 10 mi | 19 min | SW 5 | 10.00 mi | Overcast | 40°F | 29°F | 65% | 1017.6 hPa |
| Holland - West Michigan Regional Airport, MI | 20 mi | 21 min | W 8 | 10.00 mi | Overcast | 39°F | 28°F | 67% | 1018 hPa |
Link to 5 minute data for KLWA
Wind History from LWA (wind in knots)
| 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 | 11 AM | 12 PM | |
| Last 24hr | NW G22 | NW G20 | NW G21 | NW G20 | NW G22 | NW G20 | NW G22 | NW G25 | NW G21 | NW G23 | NW G24 | NW G22 | NW | NW G18 | NW G16 | NW | NW G14 | NW | W | W | W | NW | W | NW |
| 1 day ago | S G16 | SW G19 | SW G24 | SW G21 | SW G18 | SW G22 | W G17 | W G20 | W G18 | W G18 | W | W | W | W | W | W | W G14 | W G14 | W G15 | NW G15 | W | W G18 | W G17 | W G17 |
| 2 days ago | N G14 | N | NE | Calm | N | N | Calm | N | N | E | Calm | Calm | Calm | Calm | Calm | W | SW G15 | W G16 | SW G19 | SW | S | S | S G14 | S G14 |
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 (12,3,4,5)
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Ground Weather Radar Station Grand Rapids/Muskegon, MI
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