Saturday, December16, 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 7:18AMSunset 4:15PM Saturday December 16, 2017 8:57 AM CST (14:57 UTC) Moonrise 6:33AMMoonset 4:33PM Illumination 3% Phase: Waning Crescent; Moon at 28 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 Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 243 Am Cst Sat Dec 16 2017
Today..E wind 10 to 15 kts. Waves 1 to 3 ft building to 2 to 4 ft in the afternoon. A chance of light snow.
Tonight..E wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. A slight chance of light freezing drizzle in the evening.
Sunday..SE wind 10 to 15 kts. Waves 2 to 4 ft. Cloudy.
Sunday night..W wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy.
LMZ543 Expires:201712161715;;967777 FZUS53 KGRB 160843 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 243 AM CST Sat Dec 16 2017 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-161715-

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 161141
afdgrb
area forecast discussion
national weather service green bay wi
541 am cst Sat dec 16 2017
updated aviation portion for 12z TAF issuance

Short term Today... Tonight... And Sunday
issued at 301 am cst Sat dec 16 2017
a weak clipper system will continue to produce light snow over
most of the area this morning. The snow should lift north and
diminish in the afternoon as the system departs. Additional snow
accumulation should be an inch or less. Highs will be close to
normal.

Surface high to our northeast will provide easterly flow across
lake michigan tonight. This will keep low level moist and could
produce some every light snow or freezing drizzle near the lake
and bay. Clouds and winds off the water will keep lows about 10
degrees above normal.

Some very light snow or freezing drizzle is possible near the lake
and bay early Sunday, but it should be generally dry, with
temperatures about 5 degrees above normal.

Long term Sunday night through Friday
issued at 301 am cst Sat dec 16 2017
upper air pattern will flatten for a time this weekend into the
middle of next week, before buckling occurs once again as western
ridge becomes re-established over about 130w. As the pattern re-
amplifies, models continue to suggest that a cyclone will impact
the state during the second half of the week. Until then, low
amplitude split flow will lead to small precip chances and temps a
bit above normal.

Forecast was a general blend of the 16 00z ECMWF and gfs. Both
models on the 00z run are reasonably close with storm system next
Thursday-Friday, given we're still 120+ hours out. Indications
are that several inches of snow could fall across much of the
forecast area. Colder air still looks likely for the holiday
weekend as arctic air begins to move into northern u.S.

Aviation For 12z TAF issuance
issued at 541 am cst Sat dec 16 2017
mostly MVFR ceilings today withVFR at times, especially
north of a rhinelander to marinette line. Scattered light snow or
flurries is possible through midday. Ceilings will lower into
MVFR range across the region tonight, with local ifr possible.

MVFR conditions expected Sunday with some very light snow or
freezing drizzle near the lake and bay.

Grb watches warnings advisories
None.

Short term... ..Rdm
long term... ... Jkl
aviation... ... .Rdm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 24 mi57 min ENE 13 G 14 29°F 1013.1 hPa (+2.1)26°F
KWNW3 - 9087069- Kewaunee, WI 27 mi45 min NNW 2.9 G 6 21°F 1012.7 hPa

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manitowoc, Manitowoc County Airport, WI4 mi62 minN 54.00 miUnknown Precip Fog/Mist19°F17°F92%1015.5 hPa
Sheboygan County Memorial Airport, WI24 mi65 minN 610.00 miOvercast23°F21°F92%1013.3 hPa

Wind History from MTW (wind in knots)
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Last 24hrNW12NW11W11W12NW13W14
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W14W7NW4CalmCalmCalmCalmCalmCalmCalmCalmN3N5N4N4N4N4N5
1 day agoNW5W5W4CalmW6W6W8W4--SW4SW7SW7SW7SW4SW5SW7SW6SW7W6W8W9W9W9W10
2 days agoSE13SE13
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N9NW6NW7NW6W8NW10NW7NW6CalmCalm

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 (9,2,3,4)
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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.