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Marine Weather and Tides
Version 3.4 |
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 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 7:08AM | Sunset 4:48PM | Tuesday January 19, 2021 11:44 AM CST (17:44 UTC) | Moonrise 11:52AM | Moonset 12:00AM | Illumination 38% | ![]() |
LMZ080 Lake Michigan From Michigan City In To St. Joseph Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Sheboygan To Port Washington Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Port Washington To North Point Light Wi 5 Nm Offshore To Mid Lake- Lake Michigan From North Point Light To Wind Point Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Wind Point Wi To Winthrop Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Winthrop Harbor To Wilmette Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Wilmette Harbor Il To Michigan City In 5 Nm Offshore To Mid Lake- Lake Michigan From Whitehall To Pentwater Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Grand Haven To Whitehall Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Holland To Grand Haven Mi 5 Nm Offshore To Mid Lake- Lake Michigan From South Haven To Holland Mi 5 Nm Offshore To Mid Lake- Lake Michigan From St. Joseph To South Haven Mi 5 Nm Offshore To Mid Lake- 844 Am Cst Tue Jan 19 2021 Sheboygan Wi To Pentwater Mi South...
.gale watch in effect from Wednesday afternoon through Wednesday evening...
Rest of today..West winds 10 to 20 kt. Slight chance of snow through mid morning, then chance of snow this afternoon. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
Tonight..Northwest winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of snow in the evening, then slight chance of snow overnight. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
Wednesday..West winds 10 to 20 kt becoming southwest late in the morning, then increasing to 30 kt early in the afternoon increasing to gales to 40 kt late. Waves 4 to 6 ft occasionally to 8 ft building to 8 to 11 ft occasionally to 14 ft.
Wednesday night..Southwest gales to 40 kt becoming west gales to 35 kt. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 12 ft occasionally to 16 ft.
Thursday..West winds to 30 kt. Waves 5 to 8 ft occasionally to 10 ft.
Thursday night..West winds to 30 kt becoming northwest 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft.
Friday..Northwest winds 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
Saturday..Northwest winds 5 to 10 kt becoming west 10 to 15 kt. Waves 1 to 3 ft.
.gale watch in effect from Wednesday afternoon through Wednesday evening...
Rest of today..West winds 10 to 20 kt. Slight chance of snow through mid morning, then chance of snow this afternoon. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
Tonight..Northwest winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of snow in the evening, then slight chance of snow overnight. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
Wednesday..West winds 10 to 20 kt becoming southwest late in the morning, then increasing to 30 kt early in the afternoon increasing to gales to 40 kt late. Waves 4 to 6 ft occasionally to 8 ft building to 8 to 11 ft occasionally to 14 ft.
Wednesday night..Southwest gales to 40 kt becoming west gales to 35 kt. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 12 ft occasionally to 16 ft.
Thursday..West winds to 30 kt. Waves 5 to 8 ft occasionally to 10 ft.
Thursday night..West winds to 30 kt becoming northwest 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft.
Friday..Northwest winds 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
Saturday..Northwest winds 5 to 10 kt becoming west 10 to 15 kt. Waves 1 to 3 ft.
LMZ080 Expires:202101192215;;162743
FZUS63 KMKX 191444
GLFLM
OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
844 AM CST Tue Jan 19 2021
FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.
Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.
.SYNOPSIS...
Northwesterly winds persist today as low pressure around 29.9
inches continues to push east across the northern Great Lakes and
as high pressure builds to the south of Lake Michigan. There will
also be a weakening surface wave moving across the Upper
Mississippi River Valley today as well. Then another low around
29.1 inches is expected to cross Manitoba and Ontario Wednesday
and Thursday. Gusty southwest winds look to develop ahead of the
system, with gales looking increasingly likely for Wednesday
afternoon and night. Thus, a Gale Watch remains in effect for this
time. Then a cold front pushes across the Lake and gusty west to
northwest winds, generally remaining below gales, will develop
Wednesday night and continue through Friday.
&&
LMZ080-669-671-673-675-777-779-870-872-874-876-878-192215-
7 Day Forecast for Marine Location Near Bridgman, MI
Hourly EDIT Help
location: 42.05, -86.84 debug
Area Discussion for - Northern Indiana, IN
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS63 KIWX 191715 AFDIWX
Area Forecast Discussion National Weather Service Northern Indiana 1215 PM EST Tue Jan 19 2021
SYNOPSIS. Issued at 310 AM EST Tue Jan 19 2021
A quick round of snow will move through beginning this afternoon in northwest Indiana, spreading eastward through the evening. The greatest snow totals are expected in southwest Michigan as some lake enhanced snow develops. Snow will exit overnight.
SHORT TERM. (Today and Tonight) Issued at 310 AM EST Tue Jan 19 2021
Another quick round of snow will move through with the greatest totals expected in Berrien and Cass (MI) counties. Snow will begin near the afternoon drive time and taper off late Tuesday night (west to east). Totals of 2-4" are expected in the aformentioned counties, with, broadly speaking, 1-2" of snow along U.S. 20 but west of I-69. Elsewhere, 1 inch or less is expected. The nitty-gritty details follow:
There are two features to monitor over the next 24 hours. The first is a weak surface low and fading vort max aloft that has spawned an area of light snow near La Crosse, WI early this morning. This feature will weaken as it moves east. However, I cannot completely rule out some of these snow showers surviving into our northwest CWA late this afternoon. Any radar returns will likely work to saturate our currently-dry airmass.
The main show is a robust wave quickly dropping through the Dakotas. It has a fairly impressive representation on Infrared Satellite, with cloud tops of -40C. This afternoon and evening, the left exit region of an 80 knot jet at 500mb will move through our CWA. This jet will intensify this evening toward 90+ knots, indicating a dynamic clipper. Cross sections confirm this by showing frontogenesis at both 700mb and in a layer from 500-300mb. While much of these f-gen areas reside outside of the DGZ, a reduced gradient in theta-e is noted within the DGZ indicative of some instability there, and there is favorable omega within the DGZ. Lastly, saturation is noted in the lowest 700mb and steep lapse rates at times.
In coordination with Grand Rapids, we opted to hoist an advisory to highlight: 1) the impacts to the afternoon/evening commute, and 2) the snow's intensity. We are cognizant that recent short waves have not performed as well as we expected, but the upper-level support is improved in this scenario, among the other factors noted above.
LONG TERM. (Wednesday through Monday) Issued at 310 AM EST Tue Jan 19 2021
Any lingering lake effect snow toward southwest Michigan will ease Wednesday morning as ridging move in. Zonal flow follows by nightfall which keep conditions mostly quiet through the end of the week. I cannot rule out another round of lake effect snow Thursday night into Friday thanks to a reinforcing shot of cold air down the lake and surface high pressure moving in over the western Great Lakes.
The upper-air pattern amplifies by the weekend with a trough in the west and a ridge over the east. A cut off low near the Baja really throws a wrench into how this upper-air pattern will evolve. A second wrench is a wobbling upper-level low over the Canadian Prairies. These features will be critical in steering any potential storms tracking through the Central US.
AVIATION. (For the 18Z TAFS through 18Z Wednesday Afternoon) Issued at 1215 PM EST Tue Jan 19 2021
Clipper system dropping down into the mid-MS valley this afternoon will spread primarily light snow into the area that will impact both terminals this evening into tonight. Surface reflection will weaken as it moves into our area but still has decent mid-level support. Expecting mainly MVFR conditions with possible burst/banding of moderate snow dropping KSBN down to IFR vsbys briefly. Snow will quickly exit east of the area after midnight . west/northwest flow in the wake of this system will keep MVFR cigs through early Wednesday morning before finally clearing to VFR by the end of the period.
IWX WATCHES/WARNINGS/ADVISORIES. IN . NONE. MI . Winter Weather Advisory from 3 PM this afternoon to 4 AM EST Wednesday for MIZ077-078.
OH . NONE. LM . Small Craft Advisory until 11 AM EST Wednesday for LMZ043-046.
SYNOPSIS . Brown SHORT TERM . Brown LONG TERM . Brown AVIATION . JAL
Visit us at www.weather.gov/iwx
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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 |
SJOM4 - St. Joseph, MI | 19 mi | 45 min | WSW 14 G 20 | 31°F | 1021.3 hPa (+1.0) | |||
MCYI3 - Michigan City, IN | 23 mi | 45 min | SW 12 G 15 | 26°F | 17°F | |||
BHRI3 - Burns Harbor, IN | 32 mi | 65 min | SW 5.1 G 6 | 27°F | 1022.7 hPa | |||
SVNM4 - South Haven, MI | 38 mi | 45 min | 17 G 19 | 30°F | ||||
CHII2 - Chicago, IL | 40 mi | 45 min | W 14 G 16 | 26°F | 19°F | |||
CMTI2 - 9087044 - Calumet, IL | 43 mi | 57 min | SW 7 G 12 | 26°F | 1021.5 hPa | 18°F | ||
CNII2 | 43 mi | 30 min | SSW 7 G 12 | 26°F | 17°F | |||
FSTI2 | 43 mi | 105 min | 27°F | |||||
OKSI2 | 43 mi | 105 min | WNW 4.1 G 9.9 | 28°F |
Wind History for Calumet Harbor, IL
(wind in knots) EDIT (on/off)  Help11 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 | SW G10 | SW G12 | SW G13 | SW G12 | SW G14 | W G17 | SW G15 | W G13 | W G8 | W G16 | W G13 | W G9 | SW G9 | SW G8 | W G8 | SW G6 | SW G11 | SW | W G8 | SW G7 | SW G8 | SW G9 | SW G11 | SW G11 |
1 day ago | SW G10 | SW G11 | SW G9 | SW G10 | SW G11 | SW G6 | SW G7 | SW G7 | SW | SW | W G7 | W | SW | SW | W G9 | W G8 | W G9 | SW | SW G9 | SW G8 | SW | SW G8 | SW | SW G10 |
2 days ago | W G8 | W G9 | W G11 | W G10 | W G8 | W G16 | W G12 | W G7 | W G8 | W G6 | W G7 | W G10 | SW G9 | SW | SW G8 | SW | SW G8 | SW G8 | SW G8 | SW | SW | SW | SW G9 | SW G10 |
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 |
Southwest Michigan Regional Airport, MI | 22 mi | 52 min | W 13 G 21 | 10.00 mi | Overcast | 30°F | 22°F | 72% | 1021.8 hPa |
Michigan City Municipal Airport, IN | 24 mi | 50 min | SW 7 | 10.00 mi | Overcast | 27°F | 18°F | 69% | 1022 hPa |
Link to 5 minute data for KBEH
Wind History from BEH (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 | W | W | W | W | W | SW | W | W G23 | W | W | W | W G19 | W G21 | W G21 | W G20 | W | W | W G19 | W | W | W | W | W | W G21 |
1 day ago | SW | SW | W | SW | SW | SW | W | NW | N | Calm | Calm | S | NW | W | W | W | NW | W G17 | W | W | W | W | W | |
2 days ago | S | S | Calm | W | NW G19 | NW | NW G15 | NW G17 | NW | NW | NW | NW | W | W | W | W | NW | NW | NW | NW | SW | SW |
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
Ground Weather Radar Station
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