Friday, January19, 2018 L-36.com


Marine Weather and Tides
Sheboygan, WI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:16AMSunset 4:46PM Friday January 19, 2018 5:34 AM CST (11:34 UTC) Moonrise 9:46AMMoonset 8:23PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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- 208 Am Cst Fri Jan 19 2018 Sheboygan Wi To Pentwater Mi South...
.gale warning in effect from this afternoon through late tonight...
Today..Southwest winds to 30 kt increasing to gales to 35 kt in mid-afternoon. Waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft occasionally to 13 ft.
Tonight..Southwest gales to 35 kt diminishing to 30 kt late. Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally to 12 ft.
Saturday..Southwest winds 15 to 25 kt diminishing to 10 to 20 kt by early afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.
Saturday night..Southwest winds 10 to 20 kt. Waves subsiding to 1 to 3 ft.
Sunday..Southeast winds 10 to 15 kt. Chance of rain. Waves 1 to 3 ft.
Sunday night..Southeast winds 10 to 20 kt increasing to 15 to 25 kt. Rain. Waves building to 3 to 5 ft.
Monday..Southeast winds to 30 kt becoming south. Rain. Waves 4 to 7 ft occasionally to 9 ft.
Tuesday..Northwest winds to 30 kt. Chance of snow showers. Waves 6 to 9 ft occasionally to 12 ft.
LMZ669 Expires:201801191630;;669321 FZUS63 KLOT 190808 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Chicago/Romeoville IL 208 AM CST Fri Jan 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...While high pressure of 30.3 inches remains steady over the Southeast, low pressure of 29.3 inches will cross eastward over Ontario today and this evening. An associated cold front will weaken as it moves over the northern part of the lake overnight. Weak high pressure of 29.9 inches will prevail over the lake Saturday into early Sunday. Low pressure of 29.5 inches will develop across the central Plains Sunday afternoon. As this moves northeast and deepens to 29.4 inches, a warm front will lift northward across the lake on Monday. The low will pass across the the lake on Monday night and onward to Quebec Tuesday, continuing to gradually deepen. LMZ080-669-671-673-675-777-779-870-872-874-876-878-191630-

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 190926
afdmkx
area forecast discussion
national weather service milwaukee sullivan wi
326 am cst Fri jan 19 2018

Short term
Today and tonight... Forecast confidence is medium.

Milder air will continue to spread into southern wi on steady
southwest winds. Some locations could hit 40. Mid and high clouds
are expected. We should see a burst of gustier southwest winds by
afternoon into the evening, with the passage of a surface trough
stemming from low pressure crossing southern ontario.

The upper level flow become more zonal, with a 150 knot 250 mb
jet MAX moving across the lake superior region. This results in
the mid level shortwave and weak 700 mb upward motion. As a
result, expect some high level clouds. Low levels are still dry.

850 mb warm air advection continues today, with weak cooling
tonight behind the upper great lakes shortwave.

Saturday through Sunday night... Forecast confidence is medium.

Weak warm air advection lingers into Saturday, as low clouds move
into the area under the strong inversion. Mild temperatures are
expected to linger, with upper 30s in most areas.

Models then show the warm front approaching the area from the
south Saturday night into Sunday. Subsequent low level
frontogenesis response pushes into the area mainly Sunday
afternoon. There is weak 850 mb convergence in the area Saturday
night into Sunday morning, before warm air advection develops
later in the day.

Thus, the upward vertical motion Saturday night into Sunday
morning is rather weak, before increasing later in the day.

Surface temperatures remain below freezing later Saturday night,
before increasing gradually Sunday morning. Given the relatively
shallow saturation up to around 800 mb, continued mention for
light freezing rain for this period.

Chances for light rain is then forecast for the rest of the day,
as temperatures warm above freezing. Given the weak upward
vertical motion, this may end up being freezing drizzle drizzle
Saturday night into Sunday.

Warm air advection then becomes more robust Sunday night, with the
closed 500 mb low approaching the region from the southwest. The
area gets into the warm sector airmass with this system, and this
will bring rain to the area. Some fog is expected as well.

Forecast soundings were showing very weak elevated cape, but will
not mention thunder at this time.

Long term
Monday through Thursday... Forecast confidence is medium.

Models have trended into somewhat better agreement with the
occluding low track across the area Monday into Monday night.

They are generally now taking the low northeastward through
southern and east central wisconsin. The ECMWF is a bit further to
the south and keeps it in far northern illinois, with the GFS and
canadian further north.

Still, the consensus is for the warm sector to remain in the area
into Monday, which will keep the rain going. The colder air then
pushes into the area Monday night and Tuesday. This will bring a
change to snow Monday night before tapering off Tuesday morning.

At this time, is does not appear to bring much in the way of
snowfall.

The deep 500 mb low should depart the region Tuesday, with
northwest flow lingering into the rest of the week. Quiet weather
and more seasonable temperatures are anticipated at this time.

Aviation(09z tafs)
Vfr is expected through the period. Llws tonight will give way to
a period of gusty winds during the day Friday, with llws
increasing again by evening. Surface winds will be from the
southwest, and increase to 15 to 25 knots this afternoon.

Marine
Small craft advisory is now in effect from 9 am until late Friday
night, with southwest winds expected to gust to near 30 kt during
the afternoon and evening.

Winds will increase again from the east and southeast, ahead of
an approaching storm system Saturday and Sunday. This will lead
to higher waves across the nearshore waters, and likely small
craft advisories.

Mkx watches warnings advisories
Wi... None.

Lm... Small craft advisory from 9 am this morning to 3 am cst Saturday
for lmz643>646.

Today tonight and aviation marine... Hentz
Saturday through Thursday... Wood


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 27 mi35 min S 12 G 13 28°F 1009.5 hPa (-1.1)20°F
PWAW3 - Port Washington, WI 42 mi55 min SSW 4.1 G 8.9 28°F 1010.8 hPa
LDTM4 - 9087023 - Ludington, MI 43 mi47 min WSW 5.1 G 9.9 32°F 25°F
BSBM4 - Big Sable Point, MI 43 mi35 min SSW 17 G 24 32°F 1009.8 hPa (-1.4)

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sheboygan County Memorial Airport, WI35 mi42 minS 710.00 miFair24°F18°F77%1009.6 hPa

Wind History from SBM (wind in knots)
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Last 24hrW12SW10SW13SW9W9SW13SW12SW11SW14SW11SW15SW14SW16SW16SW12W11SW12SW9SW9W9W10SW6SW7S7
1 day agoW9W9W10W15
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SW12SW12W12SW11
2 days agoN12N13N8N8N11N9N13N13N11N10NW6W4W5W5W5W4SW4W5W8W8W7W9W9W9

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Milwaukee/Sullivan, WI (6,6,7,8)
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Ground Weather Radar Station Green Bay, WI
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weather_mapweather_map weather_map

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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.