Monday, December16, 2019
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Marine Weather and Tides
Reedsville, WI

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:20AMSunset 4:16PM Monday December 16, 2019 7:27 AM CST (13:27 UTC) Moonrise 10:11PMMoonset 12:04PM Illumination 77% Phase: Waning Gibbous; Moon at 19 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 Expires:201912161715;;864833 Fzus53 Kgrb 160919 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 319 Am Cst Mon Dec 16 2019 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz521-522-541>543-161715- Green Bay South Of Line From Cedar River To Rock Island Passage And North Of A Line From Oconto Wi To Little Sturgeon Bay Wi- Green Bay South Of Line From Oconto Wi To Little Sturgeon Bay Wi- Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 319 Am Cst Mon Dec 16 2019
Today..W wind 10 to 15 kts. Waves 2 ft or less. Partly Sunny.
Tonight..W wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy.
Tuesday..W wind 10 to 15 kts increasing to 15 to 20 kts in the afternoon. Waves 1 to 3 ft. A chance of flurries in the afternoon.
Tuesday night..NW wind 15 to 20 kts with a few gusts near 25 kts. Waves 2 to 4 ft. A chance of flurries.
LMZ543


7 Day Forecast for Marine Location Near Reedsville, WI
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location: 44.18, -88     debug


Area Discussion for - Green Bay, WI
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FXUS63 KGRB 161146 AFDGRB

Area Forecast Discussion National Weather Service Green Bay WI 546 AM CST Mon Dec 16 2019

Updated aviation portion for 12Z TAF issuance

SHORT TERM. Today . Tonight . and Tuesday Issued at 320 AM CST Mon Dec 16 2019

Cloud trends and small precipitation chances will be the main forecasts concerns.

Widespread low clouds covered the western Great Lakes region early this morning, and most of the forecast models did not have a good handle on this. Have continued the trend of the previous shift to keep more clouds over the forecast area today. The best chance of breaks in the clouds will be over eastern WI, aided by downsloping west winds. A cold front will approach north central WI this afternoon, but is expected to weaken as it arrives. Highs will be in the mid to upper teens west to the lower to middle 20s east.

Clouds may tend to break up this evening as a surface ridge moves through the region. However, cloud cover should increase again northwest as a another cold front approaches north central WI overnight. This front may bring a chance of flurries to parts of north central WI late tonight. lows should be in the single digits, except lower teens southeast.

On Tuesday, the cold front will work its way across the forecast area, and bring a reinforcing shot of cold air. A short-wave trof and LFQ of an upper level jet will impact the northwest part of the forecast area during the afternoon, bringing a chance of snow showers or flurries. The best chance of snow showers will be over Vilas County, where developing cold northwest flow will result in lake enhancement. Highs will be in the teens and lower 20s.

LONG TERM. Tuesday Night Through Sunday Issued at 320 AM CST Mon Dec 16 2019

The main highlights from the extended forecast are the below normal temperatures on Wednesday and at/above normal temperatures for the rest of the forecast period. In addition to the temperatures, conditions will generally be dry through the beginning of next week, excluding some lake-effect snow over Vilas County through Wednesday and possible snow showers over far northeast Wisconsin on Saturday.

Tuesday night through Wednesday . A mean upper-level northwest jet will shift its left front quadrant region over Wisconsin Tuesday night. At the same time, a surface low pressure system will move east over eastern Ontario. These two components will be the driving factors to keep lake-effect snow showers over far north-central Wisconsin through Wednesday morning. Additional snow accumulations would only amount to about one half inch over Vilas County. As the northwest jet max shifts slightly further east, a surface high pressure system will bring some cold arctic air to the region. Wednesday morning low temperatures will be the coldest of the extended with readings in the single digits above and below zero. By Wednesday afternoon, WAA will increase across Wisconsin as the jet max moves over Lower Michigan. Some models indicate the possibility for some light snow showers over far northern Wisconsin for Wednesday afternoon and night. Confidence remains low with these snow showers.

Rest of the forecast . By Thursday, an upper-level ridge will bring dry conditions and slightly warmer temperatures to the region. This ridging won't last long as an upper-level shortwave trough pushes into the region for Friday. This shortwave continues to appear moisture deprived and not as strong as seen in previous forecasts. Model guidance indicates the surface low pressure system associated with this trough will move around northern Wisconsin. Conditions will likely remain dry for the forecast area until a quick moving clipper system moves over Lake Superior on Saturday. Locations across far northern Wisconsin could see some light snow showers from this system. Temperatures from Thursday through the rest of the extended are likely to remain at/above normal.

AVIATION. for 12Z TAF Issuance Issued at 532 AM CST Mon Dec 16 2019

MVFR/local IFR ceilings covered north central and parts of far northeast WI early this morning, with VFR stratocumulus over the rest of the forecast area. Do not think that the MVFR ceilings will make it into the eastern TAF sites. Models have been underplaying the extent of the cloud cover, and are likely too quick to erode the cloud cover during the day. Some breaks may open up in the east due to downsloping, but widespread clearing is expected to hold off until late afternoon and evening, when a ridge of high pressure strengthens over the region. More clouds will arrive at the western TAF sites overnight as a cold front approaches, and ceilings are expected to drop to MVFR late. A few flurries will also be possible.

Marginal LLWS is expected at the RHI TAF site early this morning, and again late tonight.

GRB WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . Kieckbusch LONG TERM . Hykin AVIATION . Kieckbusch


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWNW3 - 9087069- Kewaunee, WI 33 mi57 min W 7 G 12 18°F 1020.1 hPa
SGNW3 - Sheboygan, WI 34 mi87 min WNW 6 G 7 20°F 1022.7 hPa (+0.5)

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manitowoc, Manitowoc County Airport, WI18 mi31 minW 710.00 miOvercast18°F9°F68%1023.3 hPa
Green Bay, Austin Straubel International Airport, WI22 mi34 minSW 510.00 miOvercast17°F7°F64%1022.6 hPa

Link to 5 minute data for KMTW

Wind History from MTW (wind in knots)
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Last 24hrW8W8W9W8W10W8W8W5W3W3CalmCalmCalmW5W4NW6W5W5W4W6W7W5W5W7
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2 days agoNW5NW5CalmCalmNW3W6W6W6W3W3NW3W3CalmCalmCalmCalmCalmCalmCalmN3N3NW4NW5W4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
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
Wind Forecast for Green Bay, WI (8,2,3,4)
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Ground Weather Radar Station Green Bay, WI
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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.