Wednesday, March3, 2021
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Marine Weather and Tides
Twin Lakes, WI

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:22AMSunset 5:46PM Wednesday March 3, 2021 6:01 AM CST (12:01 UTC) Moonrise 12:00AMMoonset 9:57AM 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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LMZ646 Wind Point Wi To Winthrop Harbor Il- 506 Am Cst Wed Mar 3 2021
Today..West wind 5 to 10 knots veering northwest late in the morning, then becoming northwest 5 to 10 knots early in the afternoon becoming north 10 to 15 knots late in the afternoon. Sunny. Waves around 1 foot.
Tonight..North wind 10 to 15 knots. Partly cloudy through around midnight then becoming mostly cloudy. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight.
Thursday..North wind 10 to 15 knots. Partly Sunny. Waves 2 to 4 feet.
Thursday night..Northeast wind 10 to 15 knots backing north early in the morning. Mostly clear. Waves 2 to 4 feet. Wave heights are for ice free areas.
LMZ646 Expires:202103031700;;404727 FZUS53 KMKX 031106 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 506 AM CST Wed Mar 3 2021 For waters within five nautical miles of shore on Lake Michigan LMZ646-031700-


7 Day Forecast for Marine Location Near Twin Lakes, WI
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location: 42.52, -88.26     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 030933 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 333 AM CST Wed Mar 3 2021

SHORT TERM. (Issued 333 AM CST Wed Mar 3 2021)

Today through Thursday Night:

A cold front is expected to pass southeast through the area this morning, along with a 500 mb shortwave trough. Dry conditions are expected, with mostly sunny skies this morning into the middle afternoon hours. Some clouds may begin to move southeast into the area toward sunset, though not confident in this. Highs should be in the lower to middle 40s, highest west of Madison.

Strong high pressure will remain north of the region tonight into Thursday night, with light winds expected across the area. Dry conditions are expected during this period.

The main issue will be the extent of low clouds and fog possibilities for tonight into Thursday across the area. Short term models and forecast soundings are trying to bring low clouds into the area tonight, lingering into Thursday morning and perhaps into the afternoon. They also try to develop some fog in southwest parts of the area as well later tonight into Thursday morning. The NAM is more aggressive with low level saturation and deeper moisture than the GFS, which these models tend to be in these situations.

Think that the short term models and NAM may be overdone with the low clouds and fog, though can see some of this occurring with light winds and dew point depressions trying to lower toward 12z Thursday. There should also be some lake effect clouds that move onshore during this time, despite delta T values being borderline.

There should be an area of middle clouds that moves southeast through the area later tonight into Thursday as well, so will continue to bring mostly cloudy skies during that period. Kept highs in the middle to upper 30s for Thursday with the clouds and light northeast winds. Clearing skies Thursday night should bring lows into the upper teens to around 20, as light winds linger.

Wood

LONG TERM. (Issued 333 AM CST Wed Mar 3 2021)

Friday through Tuesday:

The overall upper air pattern will become meridional, with high amplitude ridging over the Canadian prairies, and deep troughing over far ern Canada for late week. This will yield a n-s sfc ridge from Canada into the wrn Great Lakes through Sat. The meridional pattern will then break down, with the upper ridge to shift across WI on Sun, followed by a shortwave trough Sun nt into Mon AM.

The associated low pressure area will track ewd across Canada, with breezy ssely sfc flow and warm advection over srn WI for Sun, becoming swly on Mon. The low will then drag a decaying cold front into srn WI for late Mon, with weak high pressure to follow. Temps will remain near or slightly above normal, with a more noticeable boost in temps on Sun into Mon.

A fairly large upper trough will then move into the wrn USA from the Pacific for Mon-Tue. Believe the GEFS is a little too fast with this feature, so held back rain chances until Tue nt-Wed. As deepening low pressure forms over the nrn Great Plains, sly flow will maintain very mild temps on Tue into Wed.

Gehring

AVIATION. (Issued 333 AM CST Wed Mar 3 2021)

Low level wind shear conditions have ended, with the gusty 2000 foot AGL winds shifting southeast of the area.

A cold front is expected to pass southeast through the area this morning, with northwest winds shifting north and weakening this afternoon. Dry conditions are expected, with mostly sunny skies this morning into the middle afternoon hours. Some middle level clouds may begin to move southeast into the area toward sunset, though not confident in this.

Strong high pressure will remain north of the region tonight into Thursday night, with light winds expected across the area. Dry conditions are expected during this period.

The main uncertainty will be the extent of low clouds and fog possibilities for tonight into Thursday across the area. The low clouds with MVFR ceilings may occur later tonight into Thursday morning, with IFR ceilings possible southwest of Madison. Some light fog in this area may develop later tonight into Thursday morning as well. There should also be some lake effect clouds with MVFR ceilings that move onshore during this time.

There should be an area of middle clouds that moves southeast through the area later tonight into Thursday as well. Clearing skies are expected Thursday night.

Wood

MARINE. (Issued 333 AM CST Wed Mar 3 2021)

Low pressure over eastern Ontario will move east of the region today, with high pressure over Hudson Bay. A cold front will move southeast across Lake Michigan this morning, shifting west northwest winds to north this afternoon.

Strong high pressure will linger to the west of Hudson Bay tonight into Friday, before shifting southeast across Ontario this weekend. North winds are generally expected through the rest of this week, becoming northwest on Saturday. Winds should shift to the south later in the weekend.

Waves may increase somewhat over far southern portions of the lake later tonight into Thursday, with the north winds and long north to south fetch over the lake.

Wood

MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.

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Weather Reporting Stations
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Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burlington Municipal Airport, WI12 mi66 minN 010.00 mi34°F28°F78%1012.2 hPa
Kenosha, Kenosha Regional Airport, WI18 mi68 minW 710.00 miFair36°F28°F73%1012.5 hPa
Chicago/Waukegan Regional Airport, IL22 mi66 minWSW 610.00 miFair37°F28°F70%1012.5 hPa

Link to 5 minute data for KBUU

Wind History from BUU (wind in knots)
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1 day agoNW7NW12N14NW11
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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