Marine Weather and Tides
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 6:53AM||Sunset 4:21PM||Sunday November 19, 2017 8:04 AM CST (14:04 UTC)||Moonrise 8:41AM||Moonset 6:28PM||Illumination 1%|
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|LMZ541 Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 321 Am Cst Sun Nov 19 2017 |
.small craft advisory in effect until noon cst today...
Early this morning..NW wind to 30 kts. Waves 2 to 4 ft. Scattered flurries.
Today..W wind 15 to 25 kts diminishing to 10 to 20 knots. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Partly Sunny.
Tonight..W wind 10 to 20 kts. Waves 1 to 3 ft. Mostly cloudy in the evening then becoming mostly clear.
Monday..SW wind 10 to 15 kts backing S 15 to 25 kts with gale force gusts to around 35 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.
Monday night..SW wind to 30 kts with gale force gusts to around 40 kts. Waves 5 to 8 ft. Partly cloudy in the evening then becoming mostly cloudy.
|LMZ541 Expires:201711191715;;637927 FZUS53 KGRB 190921 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 321 AM CST Sun Nov 19 2017 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-191715-|
7 Day Forecast for Marine Location Near Ephraim, WIHourly EDIT Help
Area Discussion for - Green Bay, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 kgrb 191104|
area forecast discussion
national weather service green bay wi
504 am cst Sun nov 19 2017
updated aviation portion for 12z TAF issuance
Short term Today... Tonight... And Monday
issued at 254 am cst Sun nov 19 2017
light lake effect snow showers will continue to diminish across
far north-central wisconsin this morning as high pressure builds
in across the western great lakes region. This high will bring dry
and quiet weather for the second half of the weekend and into next
week. The main weather concern will be clouds today and tonight.
Although skies are expected to clear from west to east this
morning, another batch of clouds across the dakotas is slated to
arrive later this afternoon and this evening. This batch of clouds
will then move out later tonight, bringing mostly clear skies to
the region after midnight. Temperatures today are expected to
range from the middle 20s across the north, with highs around 30
across central and east- central wisconsin. Lows tonight will
range from around 20 across the north, with lower to middle 20s
Southerly winds and mostly sunny skies will cause fairly warm
temperatures to start the work week as highs climb into the 40s
across the region as the aforementioned high pressure system
tracks to the east. These highs will be a good 5 degrees above
normal for this time of year.
Long term Monday night through Saturday
issued at 254 am cst Sun nov 19 2017
tranquil pattern expected into thanksgiving day with respect to
precipitation chances. There is a chance of lake effect snow
showers across far northern wisconsin, mainly vilas county
Tuesday into Tuesday night as low level winds turn to the
northwest behind a cold front. A light accumulation of snow
is possible, especially across the snowbelt region of vilas
county. High temperatures on Tuesday should be some 5 to 10
degrees colder than Monday. Also, increasing southerly winds
may bring breezy windy conditions to the area Monday night
For the upcoming holiday travel period, clouds will be on the
increase during the day Wednesday with highs in the upper 20s
to middle 30s at most places. The latest model runs tonight now
suggest that there may be a little light snow across northern
wisconsin Wednesday night. This is a new development from the
previous model runs, thus will wait at least one more model run|
before adding it to the forecast. For thanksgiving day, it will
be a fairly nice day temperature wise with highs in the upper 20s
to middle 30s.
Warmer conditions are expected on Friday with highs in the 30s
to middle 40s. The next cold front swings across the region on
Friday into Friday night. The GFS canadian models keep most of the
precipitation across the north. However, the 00z ECMWF model run
tonight was more aggressive with precipitation across the entire
area. Will wait and see if the models converge on a certain
solution before increasing changing chances of precipitation. If
precipitation does occur, probably would be in the form of rain
and snow since boundary layer temperatures will be well above
freezing on Friday into Friday evening. Low confidence in the
Saturday forecast, thus no changes at this time.
Aviation For 12z TAF issuance
issued at 504 am cst Sun nov 19 2017
ceilings were generally MVFR orVFR this morning, ranging from
2-4k ft. Skies will clear through the morning as drier air advects
into the region, causing conditions to improve toVFR. Scattered
lake-effect snow showers or flurries will end this morning as this
drier air advects in. Another batch of clouds will arrive later
this afternoon, with skies becoming mostly clear late tonight.
Gusty northwest to west winds will continue until later this
Issued at 254 am cst Sun nov 19 2017
gusty northwest winds will continue early this morning. A few
gale force gusts are possible before winds slowly diminish later
this morning. A small craft advisory remains in effect for the
nearshore waters through early this afternoon when winds and waves
fall below small craft criteria.
Winds and waves will pick up once again early in the work week as
a low pressure system tracks to the north. Gale force gusts are
possible Monday night and Tuesday as a cold front tracks through
the western great lakes region.
Grb watches warnings advisories
Short term... ..Kurimski
long term... ... Eckberg
aviation... ... .Kurimski
marine... ... ... Kurimski
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|NPDW3 - Northport Pier at Death's Door WI||14 mi||55 min||WNW 18 G 24||28°F||1011.5 hPa|
|FPTM4 - Fairport, MI||42 mi||85 min||NNW 9.9 G 15||27°F||1010.8 hPa|
|45002 - N MICHIGAN- Halfway between North Manitou and Washington Islands.||43 mi||75 min||WNW 21 G 27||31°F||48°F||5 ft||1011.2 hPa (+2.1)|
Wind History for Menominee, MI(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Door County Cherryland Airport, WI||24 mi||69 min||NW 16 G 21||10.00 mi||Overcast||26°F||14°F||60%||1014.6 hPa|
|Menominee - Marinette Twin County Airport, MI||24 mi||69 min||NW 7 G 18||10.00 mi||Overcast||24°F||12°F||62%||1015.3 hPa|
Wind History from MNM (wind in knots)
|1 day ago||S||S|
|2 days ago||N|
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Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of GreatLakes EDIT
Wind Forecast for Green Bay, WI (9,2,3,4)(on/off)  Help
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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.