Tuesday, July23, 2019 L-36.com


Marine Weather and Tides
Sheboygan, WI

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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 5:28AMSunset 8:25PM Tuesday July 23, 2019 9:06 AM CDT (14:06 UTC) Moonrise 11:57PMMoonset 11:53AM Illumination 60% Phase: Waning Gibbous; Moon at 21 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 Expires:201907232115;;509899 Fzus63 Kmkx 231355 Glflm Open Lake Forecast For Lake Michigan National Weather Service Milwaukee/sullivan Wi 855 Am Cdt Tue Jul 23 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.. High pressure of 30.3 inches will slowly move from the northern great plains into illinois by late Wednesday. Light north to northwest winds will prevail during this time. The high pressure area will then move across the ohio river valley into the mid atlantic states for Wednesday night through Friday. Meanwhile, low pressure of 29.5 inches will move east across southern canada. Light to modest southwesterly winds will develop for Wednesday afternoon and Thursday and become breezy for Friday and Saturday. Lmz080-669-671-673-675-777-779-870-872-874-876-878-232115- 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- 855 am cdt Tue jul 23 2019 sheboygan wi to pentwater mi south...
Rest of today..Northwest winds 10 to 15 kt becoming north 10 to 20 kt. Waves 2 to 4 ft.
Tonight..North winds 10 to 20 kt becoming northwest 5 to 10 kt. Waves 2 to 4 ft.
Wednesday..North winds 5 to 10 kt backing to southwest. Waves 1 to 2 ft.
Wednesday night..Southwest winds 5 to 10 kt. Waves 1 to 2 ft.
Thursday..Southwest winds 5 to 10 kt becoming south 10 to 20 kt in the afternoon. Waves 1 to 3 ft.
Thursday night..South winds 10 to 15 kt becoming southwest 10 to 20 kt. Waves 1 to 3 ft.
Friday..Southwest winds 10 to 20 kt becoming south to 30 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.
Saturday..Southwest winds 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft.
LMZ669


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 231008
afdmkx
area forecast discussion
national weather service milwaukee sullivan wi
508 am cdt Tue jul 23 2019

Update No change to forecast at this time.

Pc

Aviation(12z tafs) Mid level wave shifts southeast of the area
this morning. Surface high pressure remains to our west keeping a
northerly flow in place. Winds will turn onshore this afternoon.

Lingering mid level cyclonic flow and lake breeze convergence may
be enough to set off some isolated shra tsra this afternoon early
evening. Afternoon CU and any CB bases will be atVFR levels with
a diminishing trend in the evening.

Pc

Prev discussion (issued 214 am cdt Tue jul 23 2019)
short term...

today and tonight - confidence... Medium
mid level wave shifts to our southeast this morning. However the
500 millibar flow does remain northerly and slightly cyclonic
throughout the day. A weak ripple is possible. Colder 500 millibar
temperatures will linger in this regime with values in the negative
teens celsius. Model soundings show skinny CAPE with values around
500-800 j kg likely. Lots of dry air noted in the soundings as
well. There will be some surface convergence evolving as lake
breeze circulation evolves this afternoon. Will stick with the
small pops to account for some isolated development. Any activity
that pops up will diminish in the evening with skies becoming
mainly clear.

Wednesday into Thursday - confidence... Medium
main question for Wednesday afternoon is with whether there will
be a few showers storms that pop up. The 23.00z GFS is a high end
outlier for how widespread it creates precipitation in the
afternoon due to it having a much more moist profile, particularly
in the 700-400mb level. The 23.00z NAM is on the other end of the
spectrum and has much drier mid level air in place. Still,
profiles show a skinny uncapped CAPE profile with a weak surface
trough moving through which could pop off a few showers storms.

Added a slight chance of precipitation in the afternoon for
Wednesday.

Ridge moves east going into Thursday and shifts the low-level flow
around from being north-northwesterly to south-southerly which
will start to advect some warmer air into the region.

Long term...

Friday into Monday - confidence... Medium
southerly southwesterly low level flow will remain in place
through the weekend and help to push temperatures back up into the
mid upper 80s over this period. The better low level moisture
transport focus is toward the u.P of michigan going through
sat sun, so think that the focus for convection will be up in that
area. Better chance for some rain showers storms appears to be on
Sunday night into Monday as the cold front drags through the
region.

Aviation(09z tafs)... Mid level wave shifts southeast of the area
this evening. Surface high pressure remains to our west keeping a
northerly flow in place. Winds will turn onshore this afternoon.

Lingering mid level cyclonic flow and lake breeze convergence may
be enough to set off some isolated shra tsra this afternoon early
evening. Afternoon CU and any CB bases will be atVFR levels with
a diminishing trend in the evening.

Marine... High pressure will slowly move from the northern great
plains into illinois by late Wednesday. Light north to northwest
winds will prevail during this time. The high pressure area will
then move across the ohio river valley into the mid atlantic states
for Wednesday night through Friday. Meanwhile, low pressure will
move east across southern canada. Light to modest southwest winds
will develop for Wednesday afternoon and Thursday and become
breezy for Friday and Saturday.

Mkx watches warnings advisories
Wi... None.

Lm... None.

Today tonight and aviation marine... Collar
Wednesday through Monday... Halbach


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 27 mi66 min NW 11 G 13 65°F 1019.1 hPa (+1.1)57°F
45024 38 mi26 min WNW 12 G 14 66°F 64°F1 ft1019 hPa61°F
BSBM4 - Big Sable Point, MI 43 mi26 min N 9.9 G 13 68°F 1019.6 hPa
LDTM4 - 9087023 - Ludington, MI 43 mi54 min W 2.9 G 5.1 67°F 60°F

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sheboygan County Memorial Airport, WI35 mi73 minNNW 810.00 miMostly Cloudy65°F57°F78%1019.3 hPa

Wind History from SBM (wind in knots)
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Last 24hrN9N8
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N11NE943NW5W3SW4W4NW4N6N5NW3CalmW6W4W5NW7NW8N8
1 day agoNE6NE5N5N4N6N8
G16
E7NE11E9NE4N4NE7NE8NE9NE11NE9N7N6N6N5N5N8N10N7
2 days agoSW13SW14
G21
SW13N12
G27
E3NE10E6E4W4NW5NW4N4N5N5CalmN6N5CalmNW3CalmCalmCalmNE3N6

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 (10,2,3,4)
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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.