Monday, September24, 2018 L-36.com


Marine Weather and Tides
Sheboygan, WI

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:40AMSunset 6:45PM Monday September 24, 2018 1:08 PM CDT (18:08 UTC) Moonrise 6:57PMMoonset 5:55AM Illumination 100% Phase: Full Moon; Moon at 15 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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LMZ669 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- 856 Am Cdt Wed Sep 19 2018 Sheboygan Wi To Pentwater Mi South...
Rest of today..Northeast winds 10 to 20 kt. Slight chance of showers and Thunderstorms this afternoon. Waves 2 to 4 ft.
Tonight..East winds 10 to 20 kt becoming southeast. Chance of showers and Thunderstorms in the evening, then showers and Thunderstorms likely overnight. Waves 2 to 4 ft.
Thursday..Southeast winds 10 to 20 kt becoming south. Chance of showers and Thunderstorms in the morning. Waves 2 to 4 ft building to 3 to 5 ft.
Thursday night..South winds to 30 kt becoming southwest. A few gale force gusts to 35kt possible. Waves 5 to 8 ft occasionally to 10 ft building to 7 to 10 ft occasionally to 13 ft.
Friday..West winds to 30 kt becoming northwest. Gales to 35 kt possible. Waves 6 to 9 ft occasionally to 12 ft.
Friday night..North winds to 30 kt becoming northeast 10 to 20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
Saturday..East winds 10 to 20 kt becoming southeast 5 to 10 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
Sunday..East winds 10 to 15 kt. Waves 1 ft or less.
LMZ669 Expires:201809192030;;883158 FZUS63 KLOT 191356 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Chicago/Romeoville IL 856 AM CDT Wed Sep 19 2018 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...High pressure of 30.1 inches over Ontario and the northern Great Lakes will gradually shift northeast tonight. Low pressure of 29.5 inches will develop over the Central Plains tonight and then lift northeast to the Upper Mississippi Valley Thursday evening. The low will track across the Upper Great Lakes Thursday night while dragging a strong cold front across the lake. High pressure of 30.4 inches will spread across the Upper Mississippi Valley and Great Lakes Region Saturday. LMZ080-669-671-673-675-777-779-870-872-874-876-878-192030-


7 Day Forecast for Marine Location Near Sheboygan, WI
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location: 43.71, -87.19     debug


Area Discussion for - Milwaukee/Sullivan, WI
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Fxus63 kmkx 241438 aaa
afdmkx
area forecast discussion... Updated
national weather service milwaukee sullivan wi
938 am cdt Mon sep 24 2018

Update
Low clouds developed near the lake this morning. Expect these to
mix out by early afternoon.

Marine
Waves around 4 feet were still being reported at the atwater buoy
in milwaukee and the south mid-lake buoy. As southeast winds
continue to diminish through late morning, expect waves to subside
below small craft advisory levels by around noon. No change to the
expiration timing of the headline.

Prev discussion (issued 639 am cdt Mon sep 24 2018)
update...

an area of clouds has developed in the northeast this morning from
west bend to sheboygan. Otherwise, the morning will start out
sunny across southern wisconsin as expected. Patchy fog in a few
locations will dissipate within the next hour or two.

Aviation(12z tafs)...

vfr conditions will prevail through the morning hours today.

Increasing cloud cover from the south will likely result in some
MVFR conditions this afternoon into tonight. May even see ceilings
drop to ifr for a time tonight.

The increased moisture from the south will also bring a chance
for showers later today into tonight, with the best chance in
areas east of madison.

Prev discussion... (issued 331 am cdt Mon sep 24 2018)
short term...

today and tonight... Forecast confidence is high:
southerly winds will result in increasing low level moisture
today. The deeper moisture and better warm advection will push
into michigan, but looks like southern wisconsin will still get
clipped by enough for clouds and a few showers. The best chance
for showers will be in the eastern forecast area toward the deeper
moisture and better lift.

Skies should start of mostly sunny this morning, with the clouds
moving in for the afternoon hours. The morning and possibly early
afternoon sunshine should be enough to warm temps up into the low
70s most places. It may struggle to hit 70 near lake michigan
under onshore winds, and may hit the mid 70s in the western
forecast area with more sunshine and warmer temps aloft likely.

A chance for showers will continue tonight, mainly in the eastern
forecast area. The lingering clouds and mild airmass aloft should
result in above normal low temps around 60.

Long term...

Tuesday... Forecast confidence moderate...

by Tuesday morning, an expansive trough will be in place across
the northern plains, with a cold front approaching the region from
the west. Lift will increase across the frontal zone through the
day, and we should see an uptick in showers and thunderstorms by
afternoon. Depending on the amount of Sun that is able to break
through, sufficient instability may develop for a few strong to
severe thunderstorms, especially across the eastern 1 2 to 1 3 of
the forecast area Tuesday afternoon and evening. A few damaging
wind gusts would be the primary hazard should severe storms
develop. It should be noted that while there's high confidence
that we will see precipitation on Tuesday, confidence is quite low
as to whether we will see sufficient destabilization for severe
weather.

Tuesday night through Friday... .Forecast confidence high...

precipitation is expected to clear the area late Tuesday night,
with high pressure building south across the plains on Wednesday.

This will lead to a rather cool and breezy day across the area,
with brisk west winds and temperatures in the low 60s.

The active upper level flow continues into Thursday, with another
wave sweeping across the area. The associated surface front won't
have a lot of moisture to work with, so it's unclear just how
widespread any rainfall would be. At any rate, anything that does
fall looks to be quite light. Highs Thursday are expected to be in
the mid 60s, with cooler and (briefly) dry weather arriving for
Friday, with highs in the upper 50s to around 60.

Saturday through Monday... Forecast confidence low to moderate...

the weekend continues to look quite unsettled, with multiple
chances for rain from Saturday through Monday. Temperatures
currently look to be around or just below average, though a lot
will depend on the eventual progression of rainfall and associated
cloud cover.

Aviation(09z tafs)...

vfr conditions will prevail through the morning hours today.

Increasing cloud cover from the south will likely result in some
MVFR conditions this afternoon into tonight. May even see ceilings
drop to ifr for a time tonight.

The increased moisture from the south will also bring a chance
for showers later today into tonight, with the best chance in
areas east of madison.

Marine...

extended the small craft advisory a zone farther south to north
point light based on observed and forecast waves. Conditions
should begin to improve by early afternoon.

Gusty wind and high waves are likely to return Tuesday night into
Wednesday and again Wednesday night into Thursday. May even see a
few gale force gusts in the northern portions of lake michigan on
Thursday.

Beaches...

extended the beach hazard statement down to the illinois border
due to higher observed and forecast waves through the upcoming
morning hours. Conditions should begin to improve by early
afternoon.

Mkx watches warnings advisories
Wi... Beach hazards statement until noon cdt today for wiz052-060-066-
071-072.

Lm... Small craft advisory until noon cdt today for lmz643-644.

Update... Cronce
today tonight and aviation marine... Ddv
Tuesday through Sunday... Boxell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 27 mi68 min SE 13 G 14 62°F 1018.6 hPa (-1.4)58°F
45024 38 mi28 min SSE 1.9 G 3.9 64°F 63°F2 ft1019.3 hPa59°F
PWAW3 - Port Washington, WI 42 mi28 min SE 8.9 G 11 66°F 1019 hPa
LDTM4 - 9087023 - Ludington, MI 43 mi38 min ESE 7 G 9.9 69°F 55°F
BSBM4 - Big Sable Point, MI 43 mi28 min SE 7 G 14 71°F 1019.6 hPa

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sheboygan County Memorial Airport, WI35 mi75 minSE 1010.00 miMostly Cloudy66°F57°F75%1018.9 hPa

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Last 24hrSE9SE8SE8SE9SE6SE3E3E3CalmNE3NE3E4SE3SE5SE5SE6SE4SE5SE4SE7SE7SE9
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1 day agoE4S8S9S9S6S5S5S4SW3CalmSW3CalmSW4SW3CalmCalmCalmCalmCalmW4W3S34SE7
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NW8NW6NW6N5NW4NW4CalmCalmCalmCalmNW7N7N6CalmS6S8

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Milwaukee/Sullivan, WI (14,3,4,5)
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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.