Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Oshkosh, 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 6:53AMSunset 4:26PM Saturday November 18, 2017 7:21 PM CST (01:21 UTC) Moonrise 7:46AMMoonset 6:01PM Illumination 0% Phase: New Moon; Moon at 0 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- 335 Pm Cst Sat Nov 18 2017
.small craft advisory in effect through Sunday morning...
Tonight..NW wind to 30 kts. Waves 3 to 5 ft. Mostly cloudy.
Sunday..W wind 15 to 25 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Partly Sunny.
Sunday night..W wind 10 to 20 kts. Waves 1 to 3 ft. Mostly cloudy in the evening then clearing.
Monday..SW wind 10 to 15 kts backing S 15 to 25 kts early in the afternoon. Waves 2 ft or less building to 4 to 7 ft in the afternoon. Mostly Sunny. A small craft advisory may be needed.
LMZ543 Expires:201711190515;;613583 FZUS53 KGRB 182135 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 335 PM CST Sat Nov 18 2017 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-190515-

7 Day Forecast for Marine Location Near Oshkosh, WI
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location: 44.02, -88.56     debug


Area Discussion for - Green Bay, WI
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Fxus63 kgrb 182332
afdgrb
area forecast discussion
national weather service green bay wi
532 pm cst Sat nov 18 2017
updated aviation portion for 00z TAF issuance

Short term Tonight and Sunday
issued at 244 pm cst Sat nov 18 2017
relatively quiet 24 hour coming up as the one main system heads
toward the northeast CONUS and high pressure builds toward the
great lakes. The main forecast concerns to be on lingering lake
effect snow showers over vilas county tonight and how cool to take
temperatures both tonight and Sunday.

The 19z msas surface analysis showed an area of low pressure over
northwest oh, bringing thunderstorms to the ohio valley. An area
of high pressure was centered over the northern high plains. A
tight pressure gradient existed over the upper midwest western
great lakes, thus providing for some gusty north-northwest winds.

Light lake effect snow showers will be possible over vilas county
as delta-t values hover around 20. Negatives for much accumulation
include: low inversion heights, trajectories that are northwest
versus preferred north-northwest and a dry air mass in place (pw
values only 0.15-0.20"). This should keep accumulation numbers at
an inch or less across the favored snowbelt areas of vilas county.

Otherwise, dry and cold conditions are expected for the rest of
northeast wi under partly to mostly cloudy skies and a steady
west-northwest wind at 10 to 20 mph. Min temperatures to range
from 10 to 15 above north-central wisconsin, to the middle 20s
near lake mi.

Any lake effect snow showers or flurries should diminish Sunday
morning as the ridge of high pressure approaches and winds back
more to the west. This surface ridge is forecast to gradually
shift east across wi by Sunday afternoon, keeping dry conditions
in place for the rest of the day. A northwest flow aloft may send
a weak shortwave into the great lakes on Sunday, but with a dry
air mass overhead (plus the surface ridge), only some clouds are
expected as sky conditions could range from mostly sunny to mostly
cloudy at times. Even as WAA starts to overspread wi on Sunday,
temperatures will be below normal with readings only topping out
in the middle to upper 20s north, upper 20s to lower 30s south.

Long term Sunday night through Saturday
issued at 244 pm cst Sat nov 18 2017
northwest upper flow will produce mostly dry and seasonably cold
weather this week. Lake effect snow showers are possible Tuesday
and Tuesday night in vilas county as an upper system comes by and
a reinforcing push of cold air arrives. The wind direction does
not look favorable for much snow accumulation.

An alberta clipper could produce some precipitation Friday or Saturday,
but there are considerable differences in the model track and timing.

The best chance looks to be across northern wisconsin.

Aviation For 00z TAF issuance
issued at 524 pm cst Sat nov 18 2017
MVFR ceilings will continue at most locations through late tonight
or early Sunday morning, followed by widespread clearing as a
ridge of high pressure moves into the region. The arrival of drier
air and downsloping northwest winds may cause ceilings in
northeast wi to reachVFR before the clearing occurs. Scattered
lake-effect snow showers will affect vilas county tonight, and a
mix of rain snow showers is possible over northern door county,
otherwise dry weather is anticipated.

Marine
Issued at 244 pm cst Sat nov 18 2017
gusty northwest winds will continue tonight into early Sunday
morning. A few gale force gusts are possible through this evening
before winds slowly diminish later tonight. A small craft advisory
remains in effect for the nearshore waters.

Grb watches warnings advisories
None.

Short term... ..Kallas
long term... ... Rdm
aviation... ... .Kieckbusch
marine... ... ... Kallas


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 50 mi82 min NW 17 G 19 38°F 1004.8 hPa (+3.2)30°F
PWAW3 - Port Washington, WI 57 mi42 min N 11 G 21 38°F 1006.4 hPa

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wittman Regional Airport, WI1 mi29 minNW 13 G 2010.00 miOvercast36°F27°F70%1006.9 hPa
Appleton-Outagamie, WI17 mi37 minNNW 10 G 2010.00 miOvercast36°F24°F65%1005.8 hPa
Fond Du Lac County Airport, WI18 mi29 minNNW 14 G 2210.00 miOvercast37°F26°F65%1006.7 hPa

Wind History from OSH (wind in knots)
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Last 24hrCalmCalmCalmW5W6NW6NW6NW7N10N8N11N12N11NW12N8N12N12
G20
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1 day agoE11SE10SE11S5S3SE5SE5SE5SE6SE6S6S10S11S14
G24
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S13S12S9SW8Calm
2 days agoNW16
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NW11NW13NW10N14NW11
G19
NW11NW11N7NW9NW7NW3E5E6CalmCalmCalmE8

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.