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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 7:04AM | Sunset 6:07PM | Wednesday October 16, 2019 4:52 PM CDT (21:52 UTC) | Moonrise 7:53PM | Moonset 9:38AM | Illumination 89% |  |
LMZ669 Expires:201910170600;;809384 Fzus63 Kmkx 162007 Glflm Open Lake Forecast For Lake Michigan National Weather Service Milwaukee/sullivan Wi 307 Pm Cdt Wed Oct 16 2019 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.. A strong low pressure system of 29.5 inches will continue to shift into the eastern great lakes region this evening. Gusty west to northwest winds are expected during this period, with gale force gusts of 40 to 45 knots at times. Wind speeds will diminish by late tonight into Thursday, as weak high pressure of 30.0 inches moves from southern minnesota into wisconsin. The lighter winds should linger into Friday morning, before gusty south to southeast winds develop Friday afternoon and evening, becoming south to southwest on Saturday. Another system approaching the area early next week could bring gale force winds back to the lake michigan. && lmz080-669-671-673-675-777-779-870-872-874-876-878-170600- 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- 307 pm cdt Wed oct 16 2019 sheboygan wi to pentwater mi south...
.gale warning in effect until 7 pm cdt this evening...
Tonight..Northwest gales to 35 kt diminishing to 15 to 25 kt. Waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft occasionally to 13 ft.
Thursday..Northwest winds 15 to 25 kt becoming north. Waves 4 to 7 ft occasionally to 9 ft.
Thursday night..North winds 10 to 20 kt diminishing to 10 to 15 kt late in the evening, then diminishing to 5 to 10 kt after midnight veering to east late. Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft.
Friday..South winds 10 to 20 kt increasing to 15 to 25 kt. Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.
Friday night..South winds to 30 kt. Waves 5 to 8 ft occasionally to 10 ft.
Saturday..South winds 15 to 25 kt becoming southwest. Chance of showers. Waves 5 to 8 ft occasionally to 10 ft.
Saturday night..Southwest winds 10 to 15 kt becoming west. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
Sunday..West winds 5 to 10 kt backing to southeast. Waves 1 to 2 ft.
Monday..Southeast winds to 30 kt becoming south. Showers likely with a chance of Thunderstorms. Waves 6 to 9 ft occasionally to 12 ft.
Synopsis.. A strong low pressure system of 29.5 inches will continue to shift into the eastern great lakes region this evening. Gusty west to northwest winds are expected during this period, with gale force gusts of 40 to 45 knots at times. Wind speeds will diminish by late tonight into Thursday, as weak high pressure of 30.0 inches moves from southern minnesota into wisconsin. The lighter winds should linger into Friday morning, before gusty south to southeast winds develop Friday afternoon and evening, becoming south to southwest on Saturday. Another system approaching the area early next week could bring gale force winds back to the lake michigan. && lmz080-669-671-673-675-777-779-870-872-874-876-878-170600- 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- 307 pm cdt Wed oct 16 2019 sheboygan wi to pentwater mi south...
.gale warning in effect until 7 pm cdt this evening...
Tonight..Northwest gales to 35 kt diminishing to 15 to 25 kt. Waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft occasionally to 13 ft.
Thursday..Northwest winds 15 to 25 kt becoming north. Waves 4 to 7 ft occasionally to 9 ft.
Thursday night..North winds 10 to 20 kt diminishing to 10 to 15 kt late in the evening, then diminishing to 5 to 10 kt after midnight veering to east late. Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft.
Friday..South winds 10 to 20 kt increasing to 15 to 25 kt. Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.
Friday night..South winds to 30 kt. Waves 5 to 8 ft occasionally to 10 ft.
Saturday..South winds 15 to 25 kt becoming southwest. Chance of showers. Waves 5 to 8 ft occasionally to 10 ft.
Saturday night..Southwest winds 10 to 15 kt becoming west. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
Sunday..West winds 5 to 10 kt backing to southeast. Waves 1 to 2 ft.
Monday..Southeast winds to 30 kt becoming south. Showers likely with a chance of Thunderstorms. Waves 6 to 9 ft occasionally to 12 ft.
LMZ669
7 Day Forecast for Marine Location Near Sheboygan, WI
Hourly EDIT Helplocation: 43.71, -87.19 debug
Area Discussion for - Milwaukee/Sullivan, WI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kmkx 162035 afdmkx area forecast discussion national weather service milwaukee sullivan wi 335 pm cdt Wed oct 16 2019 Short term Tonight through Thursday... Forecast confidence is medium to high... as the upper level system across michigan continues to push east, winds across southern wisconsin will begin to subside this evening into the overnight hours. Some light breezes remain possible and this coupled with lingering cloud cover will slow the temperature trend this evening. The main question is just how much cloud cover will hang around tonight. Models are showing slightly drier air filtering in aloft and this should lead to a thinning of the clouds tonight. However, think that enough moisture will exist to keep some clouds in place. This will limit the amount of frost possible tonight, which is why we've held off on issuing any frost products for tonight. We stay in the northerly flow for Thursday but expecting there to be more sun, which will bring temps into the lower 50s for highs. All in all it should be a nice Thursday across the area with slight breezes and warmer temps. Long term Thursday night through Friday... Forecast confidence is high. Light winds and early clear skies will allow temperatures to fall into the upper 30s Thursday night. Depending on how quickly the next round of clouds spread in, temperatures may drop into the mid 30s. Therefore, mentioned patchy frost in the forecast, mainly for the east where they will be clear longer. Look for increasing southerly winds and mild temperatures on Friday as the next low pressure system approaches. Highs will be in the mid to upper 60s with mid and high clouds streaming overhead. Friday night through Saturday night... Forecast confidence is medium. The low pressure trough will slide across southern wisconsin during this period. Showers and a few thunderstorms should be present along the leading edge as it moves across the area Saturday morning. There is some uncertainty for timing at this time, but no large differences. Models are coming into better agreement each run. There should be a fairly steady progression of |
the line of showers and storms from west to east, so not expecting an all-day wash out. Nevertheless, a 2 to 3 hour period of rain is likely. Sunday through Tuesday... Forecast confidence is medium. Expect increasing southeast winds ahead of our next system on Sunday. Clouds will be increasing, but overall it will be a nice fall day with highs in the lower 60s. The next system will feature strong southerly winds out ahead of it, along with scattered showers and isolated thunderstorms. The low will be occluding over northern mn western wi Monday. Expect gusty southwest winds in the wake of the front over southern wi develop Monday night and then persist out of the west through Tuesday night as the system sits near james bay. The ECMWF is showing a slightly weaker pressure pattern than the GFS at this time. The remains uncertainty about timing and wind speed with this one. Aviation(21z tafs) Cigs continued to improve toVFR this afternoon but some brief MVFR CIGS remain possible through the evening hours. There is some uncertainty in whether or not CIGS off to the west of 2,600ft are going to shift east tonight. Think drier air will work in helping to keep skiesVFR overnight. Gusty N NW winds are expected to continue this evening before starting to diminish tonight. Marine The near gale force winds in the near shore and gale force winds in the open waters will gradually taper off late this afternoon into the evening hours. The high waves across the central and eastern portion of lake michigan will fall below 6 feet late tonight into Thursday. Winds switch to the south by Friday and an approaching system will cause winds to increase back towards small craft conditions Friday and Saturday. Winds could approach gale force early next week as a strong system moves through the area. Mkx watches warnings advisories Wi... None. Lm... Gale warning until 7 pm cdt this evening for lmz080-261-362-364- 366-563-565-567-669-671-673-675-777-779-868-870-872-874-876- 878. Small craft advisory until 7 pm cdt this evening for lmz643>646. Tonight Thursday and aviation marine... Stumpf Thursday night through Wednesday... Cronce |
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 |
| SGNW3 - Sheboygan, WI | 27 mi | 52 min | NW 12 G 21 | 51°F | 1013.2 hPa (+1.0) | |||
| PWAW3 - Port Washington, WI | 42 mi | 52 min | NW 9.9 G 25 | 53°F | 1014.6 hPa (+1.4) | |||
| BSBM4 - Big Sable Point, MI | 43 mi | 71 min | NNW 23 G 38 | 50°F | 1011.2 hPa | |||
| LDTM4 - 9087023 - Ludington, MI | 43 mi | 58 min | NNW 12 G 21 | 49°F | 38°F |
Wind History for Ludington, MI
(wind in knots) EDIT (on/off) Help| 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 | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | |
| Last 24hr | S G10 | S G12 | W G12 | W G14 | W G17 | W G19 | W G18 | W G21 | W G24 | W G23 | SW G10 | NW G18 | NW G17 | NW G22 | NW G27 | NW G21 | N G20 | NW G26 | N G24 | N G27 | N G17 | NW G19 | NW G22 | N G26 |
| 1 day ago | SW G7 | W G10 | SW G6 | SW G8 | NE G6 | E | E | E | E | E | E | E | E | E G8 | E | SE G11 | E G9 | SE G9 | E G10 | E G11 | E G9 | SE G13 | SE G10 | SE G9 |
| 2 days ago | W G21 | W G25 | W G22 | W G24 | W G24 | W G23 | W G18 | W G19 | W G18 | W G18 | W G18 | W G12 | W G12 | W G13 | W G13 | W G13 | W G13 | W G13 | W G12 | W G16 | W G15 | SW G10 | W G15 | SW G11 |
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 |
| Sheboygan County Memorial Airport, WI | 35 mi | 59 min | NW 14 G 23 | 10.00 mi | Partly Cloudy | 51°F | 36°F | 56% | 1013.2 hPa |
Link to 5 minute data for KSBM
Wind History from SBM (wind in knots)
| 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 | 1 PM | 2 PM | 3 PM | 4 PM | |
| Last 24hr | W | SW | W G21 | W G24 | W G25 | W G25 | W G19 | W G21 | W G23 | NW G22 | NW G22 | NW G19 | NW G25 | NW G25 | NW G31 | NW G28 | NW G32 | NW G28 | NW G27 | NW G23 | N G26 | NW G25 | NW G22 | NW G23 |
| 1 day ago | W | W | Calm | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | S | E | SE | S | SE G17 | S | S G27 | S G19 | S | S | S | |
| 2 days ago | W G18 | W G16 | SW | SW | W | W | W | W | W | W G16 | W | W | W | W | W | W | W G15 | W | W | W | NW G16 | W | W | W |
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 GreatLakes 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 Milwaukee/Sullivan, WI (17,4,5,8)
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Ground Weather Radar Station Green Bay, WI
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Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program. |