Marine Weather and Tides
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 7:08AM||Sunset 4:24PM||Friday December 4, 2020 4:54 PM CST (22:54 UTC)||Moonrise 9:12PM||Moonset 11:54AM||Illumination 77%|
7 Day Forecast for Marine Location Near Lake Koshkonong, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 042016 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 216 PM CST Fri Dec 4 2020
SHORT TERM. (Issued 215 PM CST Fri Dec 4 2020)
Tonight through Sunday:
A pair of shortwaves will drop through Saturday night and again Sunday night, possibly bringing a few flurries to southern Wisconsin. Expect increase clouds as these waves move through as well. Otherwise, quiet weather will continue through the weekend with temperatures near normal for early December.
LONG TERM. (Issued 215 PM CST Fri Dec 4 2020)
Monday through Friday:
High pressure overhead Monday into Tuesday will gradually shift southeast into mid-week as a trough of low pressure approaches. A switch to southerly low level flow will allow temperatures to warm up a bit through Wednesday, with high temps at least 10 degrees above normal by mid-week.
Quiet weather is likely to continue through Friday, though a weak wave may bring a little light precip late in the work week. Temperatures will probably be a bit cooler for the second half of the week behind the mid-week trough, but still look at least a few degrees above normal.
AVIATION. (Issued 215 PM CST Fri Dec 4 2020)
A few clouds may continue to fill in across the eastern forecast area later this afternoon into the evening behind a departing cold front. May see brief MVFR conditions into the evening, but most places should remain VFR. Clouds should largely clear out for tonight and Saturday as high pressure builds into the area.
MARINE. (Issued 215 PM CST Fri Dec 4 2020)
High pressure will continue to build into the northwest Great Lakes into Saturday. Northerly winds will persist into the weekend while gradually becoming lighter. Winds will stay on the lighter side for at least the first half of next week.
MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.
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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|
|MLWW3 - Milwaukee, WI||56 mi||44 min||NNE 12 G 14||39°F|
|KNSW3 - Kenosha, WI||63 mi||114 min||NNE 15 G 18||39°F||1013.2 hPa (+1.3)|
|PWAW3 - Port Washington, WI||66 mi||74 min||NE 8.9 G 13||39°F||1015.2 hPa|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Janesville-Rock County, WI||19 mi||69 min||NNE 10||10.00 mi||Fair||45°F||26°F||49%||1013.9 hPa|
|Watertown, WI||22 mi||59 min||N 8||10.00 mi||Fair||38°F||25°F||62%||1013.9 hPa|
Link to 5 minute data for KJVL
Wind History from JVL (wind in knots)
|1 day ago||SW||W||W||W||Calm||W||W||SW||W||SW||W||SW||W||W||W||SW||W|
|2 days ago||Calm||N||NW||NW||NW||Calm||Calm||Calm||Calm||W||Calm||Calm||Calm||Calm||Calm||W||NW||W||W||W||W||SW |
EDIT Weekend mode (on/off) (on/off)  Help
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Weather Map(on/off)  Help Weather Map
GEOS Local Image of 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
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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 numerous 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.