Tuesday, August22, 2017 L-36.com


Marine Weather and Tides
Manitowoc, 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 6:02AMSunset 7:44PM Tuesday August 22, 2017 7:48 PM CDT (00:48 UTC) Moonrise 6:55AMMoonset 8:26PM Illumination 1% Phase: New Moon; Moon at 1 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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LMZ543 Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 736 Pm Cdt Tue Aug 22 2017
Tonight..NW wind 10 to 20 kts. Waves 2 ft or less. Becoming mostly clear.
Wednesday..NW wind 10 to 20 kts. Waves 2 ft or less. Mostly Sunny in the morning then becoming partly cloudy.
Wednesday night..N wind 10 to 20 kts. Waves 1 to 3 ft. Partly cloudy.
Thursday..N wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy in the morning then clearing.
LMZ543 Expires:201708230415;;800172 FZUS53 KGRB 230036 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 736 PM CDT Tue Aug 22 2017 For waters within five nautical miles of shore on Lake Michigan LMZ542-543-230415-

7 Day Forecast for Marine Location Near Manitowoc city, WI
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location: 44.09, -87.65     debug


Area Discussion for - Green Bay, WI
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Fxus63 kgrb 222326
afdgrb
area forecast discussion
national weather service green bay wi
626 pm cdt Tue aug 22 2017
updated aviation portion for 00z TAF issuance

Synopsis
Issued at 220 pm cdt Tue aug 22 2017
generally quiet late-summer weather into early next week.

Seasonably cool the next couple days, then temperatures close to
normal.

The large scale pattern will complete an amplification cycle the
next couple days as a rather strong upper trough becomes
established from eastern canada into the lower great lakes region.

Jet energy working east across canada will cause the trough to
begin weakening by late in the week. By early next week, the main
westerlies will recede north into canada, leaving just a weak
remnant of the trough lingering across the forecast area.

Temperatures will begin the period below normal, then rebound to
near normal levels by the weekend. Rainfall will be limited with
precipitation events consisting of just scattered showers. As
such, amounts for the period are likely to end up below normal.

Short term Tonight and Wednesday
issued at 220 pm cdt Tue aug 22 2017
the latest rap analysis and satellite radar imagery show upper
troughing settling over the western great lakes early this
afternoon. A widespread CU field has developed across the region,
though CU has the most vertical extent over far northwest wi and
northeast mn where the highest capes reside. Some of this more
enhanced CU and even a few showers will move into north-central wi
later this afternoon. As cold air continues to funnel across the
region, forecast concerns revolve around light showers early this
evening, followed by lake effect showers drizzle late tonight.

Tonight... As a secondary surge of cold air arrives from the
northwest tonight, high res models continue to indicate that
scattered showers will persist over north-central wi through the mid
evening hours. Then attention turns to precip off western lake
superior overnight. 1000-850mb flow veers around to the nnw
direction after midnight, which is a good trajectory for showers or
drizzle to move into north-central wi. Increased cloud cover some
late as a result, but 10-15 kts of low level flow should not be
strong enough for these clouds to move into central or east-central
wi. With enough wind to prevent temps from tanking, should see lows
ranging from the mid 40s north to mid 50s south.

Wednesday... Broken cloud cover along with patchy drizzle showers
will likely linger into the mid-morning hours over northern wi. With
day time heating, however, think mixing will cause these clouds to
scatter by midday. Elsewhere, should see scattered fair weather cu
develop, which will lead to a partly cloudy day for most. Highs
ranging from the low 60s in the far north to mid 70s at wautoma.

Long term Wednesday night through Tuesday
issued at 220 pm cdt Tue aug 22 2017
at low-levels, a cool, dry canadian air mass will settle across
the area and linger through the weekend. Some pretty chilly
nights are likely unless clouds move through during the nighttime
hours. The typical cool spots across the north will probably fall
into the 30s Wednesday night and Thursday night, and would not be
surprised if there is some patchy frost. The anticyclone and its
associated air mass will linger across the area for much of the
forecast period, but moderation of the air mass should allow
temperatures to rebound to near seasonal levels by the weekend.

While the dry anticyclone dominates at low-levels, the forecast
area will be at least brushed by some middle and upper level
shortwave energy at times. That will lead to some clouds and
maybe some showers. But given the limited moisture, any rains are
likely to be scattered and light.

Tweaked mins down in the typical cool spots Wednesday night and
Thursday night, but tempered the adjustments some due to uncertainty
about passing clouds. Otherwise, the standard forecast
initialization grids based on a broad blend of model output seemed
reasonable, so no other significant changes were necessary.

Aviation For 00z TAF issuance
issued at 626 pm cdt Tue aug 22 2017
scattered showers continue to move through north-central and far
northeast wisconsin early this evening. This activity will mainly
affect the rhi TAF site before diminishing with the loss of
daytime heating in a few hours. Otherwise, cool north-northwest
flow off lake superior will bring some low clouds and patchy light
showers or drizzle to north central wi late tonight, but
conditions should remainVFR farther south and east. Gusty
northwest winds will diminish after sunset.VFR conditions and
winds below 10 kts will prevail during the day on Wednesday as
high pressure settles in across the region.

Grb watches warnings advisories
None.

Synopsis... ... .Skowronski
short term... ..Mpc
long term... ... Skowronski
aviation... ... .Kurimski


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 24 mi48 min WNW 9.9 G 13 72°F 1012.5 hPa (+0.7)49°F
KWNW3 - 9087069- Kewaunee, WI 27 mi48 min WNW 5.1 G 9.9 69°F 1011.5 hPa (+0.8)
45014 49 mi48 min WNW 16 G 19 70°F 71°F1012 hPa (+0.6)

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manitowoc, Manitowoc County Airport, WI4 mi52 minWNW 610.00 miOvercast71°F50°F47%1012.9 hPa
Sheboygan County Memorial Airport, WI24 mi55 minWNW 710.00 miA Few Clouds70°F52°F53%1012.8 hPa

Wind History from MTW (wind in knots)
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Last 24hr--------------------------W13NW19
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1 day agoS5SW3W3SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmW3W6------------------
2 days agoSW4SW5SW5SW6W3W3W4W4W3W4W4CalmCalmSW3SW10SW12S10S5S7S10S10S10S7S6

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 Green Bay, WI (20,4,5,8)
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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.