Friday, February26, 2021
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Marine Weather and Tides
Cedarburg, 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 6:30AMSunset 5:38PM Friday February 26, 2021 1:25 PM CST (19:25 UTC) Moonrise 5:56PMMoonset 7:36AM Illumination 100% Phase: Full Moon; Moon at 15 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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LMZ644 Port Washington To North Point Light Wi- 106 Pm Cst Fri Feb 26 2021
Rest of today..South wind 15 to 20 knots. Mostly Sunny. Waves 3 to 4 feet.
Tonight..South wind 10 to 15 knots becoming southwest 5 to 10 knots after midnight. Chance of rain and snow. Waves 3 to 4 feet.
Saturday..Southwest wind 5 to 10 knots backing south late in the afternoon. Partly Sunny. Waves 1 to 2 feet.
Saturday night..South wind 5 to 10 knots becoming southeast 10 to 15 knots early in the morning. Chance of rain after midnight. Waves 1 to 2 feet. Wave heights are for ice free areas.
LMZ644 Expires:202102262300;;157632 FZUS53 KMKX 261906 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 106 PM CST Fri Feb 26 2021 For waters within five nautical miles of shore on Lake Michigan LMZ644-262300-


7 Day Forecast for Marine Location Near Cedarburg, WI
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location: 43.31, -88     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 261440 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 840 AM CST Fri Feb 26 2021

UPDATE. (Issued 840 AM CST Fri Feb 26 2021)

Cancelled dense fog advisory a smidge early. Otherwise going forecast in good shape.

Collar

SHORT TERM. (Issued 413 AM CST Fri Feb 26 2021)

Today through Saturday:

With clear skies and warmer southerly winds over the colder snow pack, some patchy fog/freezing fog has developed across the area and will continue early this morning. Seeing lower visibilities for areas generally along and west of I-90 with a dense fog occuring in Iowa and Lafayette counties. Fog potential for areas further east will be less likely as dewpoint depressions are a bit higher. However, expect the fog to dissipate an hour or two after sunrise as temps and dewpoint depressions increase.

Today will be warmer and breezy as the pressure gradient increases with the departing high to the east and ahead of a surface low working its way across south central Canada. This warm air advection regime will help temps climb into the 40s this afternoon. Given how models have underperformed with temps due to them not handling the snowpack well, went ahead and increased highs a few degrees above most of the guidance today.

Otherwise, the main focus will be on a mid-level shortwave trough expected to dig across the Northern Plains during the day and push into the Western Great Lake Region tonight. This wave is progged to bring a band of low-level frontogenesis across the the area overnight and combine additional lift from WAA/dCVA with PWATs around 0.25"-0.5", it will be enough for a quick round of precip across southern WI tonight. Thinking with the warmer temps at the onset, will likely see a wintry rain-snow mix, but eventually transition over to snow overnight as temps drop, especially for areas near and north of I-94. Still not expecting too much in the way of snow accumulations with no more than an inch, but it may just be enough to cause some slicks spots. Additionally, with the surface temps trending colder than the air temps overnight could see a light glaze on surfaces along the WI/IL border with the wintry mix and rain.

Any precip is expected to end Saturday morning as the mid-level shortwave trough pushes east. Otherwise, Saturday during the day will be quiet and warm as mid-level ridging briefly sets up in between shortwave troughs. Again looking at temps to climb into the 40s, but model guidance is likely under doing high temps in another WAA pattern. Therefore, bumped temps up again above guidance and I wouldn't be surprised to see temps end up a few degrees warmer. Maybe can see a location or two even crack 50 degrees on Saturday? Then another shortwave trough is expected to works it way through the region overnight Saturday and bring a surface low right across WI resulting in another chance of a wintry mix. However, precip chances remain low for southern WI with better chances further north, but there is still uncertainty with coverage, precip type, and timing. Will keep an eye on this quick moving system and how it trends over the next few days.

Wagner

LONG TERM. (Issue 445 AM CST Fri Feb 26 2021)

Sunday through Thursday:

Cyclogenesis is expected from central WI into Ontario on Sunday. A dry slot will likely end most pcpn by 12Z Sun but cannot rule out slight chances for drizzle or freezing drizzle mainly north of Madison and Milwaukee. A strong cold front will pass during the morning with brisk wly winds the remainder of the day.

A digging upper trough and associated sfc trough from Canada will then quickly move from the nrn Great Lakes to the Lower Great Lakes late Sun nt-Mon with another dry cold frontal passage for Monday morning. Below normal temps expected for Monday.

Polar high pressure to then shift east across the state for Mon nt, sswly winds and warm advection will then begin on Tue as the high moves away and low pressure moves across srn Canada. A shortwave trough will likely pass to the south over the Ohio River Valley for Tue nt-Wed. The ECMWF and GEFS then differ on the degree of cooling with nwly flow becoming established for the ECMWF but quasi-zonal for GEFS.

Gehring

AVIATION. (Issued 840 AM CST Fri Feb 26 2021)

Still some patchy MVFR vsbys here and there but this will be improving quickly here. Otherwise VFR conditions today. Some MVFR cigs possible for a time tonight as system moves through. A light mix is possible between around 02-08z. Scattered QPF amounts very light with any snow accums a few tenths at best.

Collar

MARINE. (Issued 413 AM CST Fri Feb 26 2021)

With high pressure well to the east and low pressure moving across south central Canada today, expect breezy to gusty south to southwesterly winds. This will result in small craft conditions with gusts up to 25 knots and waves building to around 3-5 ft for our northern nearshore marine zones until tonight. Gusty conditions are expected over the open waters as well with a few gusts possibly approaching gale force for far northern portions of the lake, but widespread gales are not expected. Lighter south to southwesterly winds are expected for Saturday before another area of low pressure tracks over Wisconsin on Sunday. This will bring gusty winds on Sunday and will continue into the first half of next week.

Wagner

MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . Small Craft Advisory . LMZ643 until 3 AM Saturday.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PWAW3 - Port Washington, WI 9 mi46 min S 12 G 17 37°F 1020.7 hPa
MLWW3 - Milwaukee, WI 22 mi36 min SE 17 G 19 35°F
SGNW3 - Sheboygan, WI 34 mi26 min S 20 G 23 35°F

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
West Bend Municipal Airport, WI11 mi31 minSSE 11 G 1610.00 miFair41°F21°F45%1017.9 hPa
Milwaukee-Timmerman, WI13 mi41 minSSE 10 G 1810.00 miFair41°F16°F36%1019 hPa
Waukesha County Airport, WI23 mi41 minSSE 1210.00 miFair39°F19°F45%1019 hPa

Link to 5 minute data for KETB

Wind History from ETB (wind in knots)
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W8W6SW6SW6SW6SW4SW5SW4SW3SW5SW4SW5SW4SW3CalmCalmCalmSW6S8S7S13
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1 day agoN11
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NW7NW4CalmNW5W3W5W3W4W3CalmSW3SW3CalmW4W9W8W11
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2 days agoW9SW7SW8SW7SW8CalmCalmSE3SW4CalmSE4S4CalmSW6W8W9W10
G14
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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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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.