Saturday, April4, 2020
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Marine Weather and Tides
Brookfield, WI

Version 3.4
NOTICE
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 6:26AMSunset 7:24PM Saturday April 4, 2020 9:59 AM CDT (14:59 UTC) Moonrise 3:10PMMoonset 4:55AM Illumination 88% Phase: Waxing Gibbous; Moon at 11 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- 906 Am Cdt Sat Apr 4 2020
Rest of today..Northwest wind 10 to 15 knots with gusts to around 20 knots veering northeast late in the afternoon. Cloudy late in the morning then becoming mostly Sunny. Waves 1 to 2 feet.
Tonight..Northeast wind 5 to 10 knots easing to 5 knots late in the evening, then becoming north after midnight becoming north 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 2 feet.
Sunday..Northeast wind 5 to 10 knots veering southeast late in the afternoon. Sunny. Waves around 1 foot.
Sunday night..Southeast wind 5 to 10 knots veering south early in the morning. Partly cloudy through around midnight then becoming mostly cloudy. Waves around 1 foot.
LMZ644 Expires:202004042200;;559848 FZUS53 KMKX 041406 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 906 AM CDT Sat Apr 4 2020 For waters within five nautical miles of shore on Lake Michigan LMZ644-042200-


7 Day Forecast for Marine Location Near Brookfield, WI
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location: 43.06, -88.11     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 041445 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 945 AM CDT Sat Apr 4 2020

UPDATE. The cold advection will weaken through the day as high pressure approaches from the west. Clearing skies have quickly occurred over south central WI, but forecast soundings suggest clearing will be slower for ern WI. Sunshine is still expected to emerge during the early afternoon, although a lake breeze will develop. High temps will range from middle 40s near the lake to near 50F inland. The core of the high pressure area will move into nrn WI tnt, but still light winds and good radiational cooling conditions for tnt. There will be some high, thin clouds at times with low temps to drop just below freezing.

MARINE. Brisk nly winds will prevail over Lake MI until subsiding late in the afternoon and early evening. High pressure will then slowly move ewd across Lake MI for Sun-Mon with light and variable winds.

PREV DISCUSSION. (Issued 647 AM CDT Sat Apr 4 2020)

UPDATE .

Showers have exited the east as expected, so attention now turns to clearing skies this morning. Clouds have been a little slower to get out of here than anticipated, but the stratus deck is beginning to pop holes ahead of the clearing line, so still think most places should be sunny by afternoon.

AVIATION(12Z TAFS) .

IFR and MVFR ceilings will transition to mainly MVFR early this morning from west to east. Clearing skies are then likely from west to east during the morning and early afternoon hours as high pressure begins to build into the area. Mostly clear skies and VFR conditions are then expected to persist through the remainder of the weekend under the high.

PREV DISCUSSION . (Issued 331 AM CDT Sat Apr 4 2020)

SHORT TERM .

Today through Sunday . Forecast Confidence is high:

Showers will exit the east by around daybreak this morning, with skies then clearing west to east this morning into early afternoon as high pressure begins to build in from the west. Though it will be cooler behind the cold front, highs should still get up to around normal with plenty of sunshine expected by afternoon. Winds will become onshore in the east by afternoon, so expect it to be cooler near the lake.

Mostly clear skies will continue for tonight and Sunday under the high. Temps will likely be just a bit below normal tonight under a good radiational cooling setup. Highs Sunday will warm back above normal away from Lake Michigan, with onshore winds keeping it cooler near the lake once again.

LONG TERM .

Sunday night through Tuesday Night . Forecast Confidence Medium .

Sunday night should be dry across the region, before showers begin to increase across the area during the day Monday, especially Monday afternoon, as warm advection ramps up and moisture increases across the area. This chance will continue into Monday night, as a sharpening warm front lifts through the area. A few thunderstorms will be possible during this time.

Forecast soundings indicate a strong capping inversion behind the warm front, suggesting that a good portion of the day on Tuesday may end up being warm and dry. Highs Tuesday should reach 70 across the far south and southwest, with mid to upper 60s further north and east. A decent south to southwest wind will even limit the eastward extent of the lake breeze, keeping some of the areas closer to the lake warmer than they might otherwise be this time of year.

A cold front will then approach from the west Tuesday night. If enough instability is able to develop and the capping inversion isn't too strong, this should result in a good chance for thunderstorms across the area. Shear profiles are impressive, so a few strong/severe storms are possible. This will ultimately depend on instability profiles, however.

Wednesday into the Weekend . Forecast Confidence Medium .

Temperatures will remain mild into Wednesday, with highs in the upper 50s and low 60s. A much stronger front will sweep into the area later Wednesday, however, with temperatures becoming quite cool for the rest of the week, with highs in the 40s. Northwest winds will be quite breezy through this stretch as well, adding an extra chill to the air.

AVIATION(09Z TAFS) .

Showers are expected to exit the eastern forecast area by around daybreak this morning. IFR and MVFR ceilings will transition to mainly MVFR early this morning from west to east. Clearing skies are then likely from west to east during the morning and early afternoon hours as high pressure begins to build into the area. Mostly clear skies and VFR conditions are then expected to persist through the remainder of the weekend under the high.

MARINE .

Brisk northerly winds will gust up to 30 knots today behind a departing cold front, with the highest gusts over the open waters. High pressure will then gradually move through the Great Lakes region later today into early next week, bringing lighter winds and low waves to the area.

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

Update . Gehring Today/Tonight and Aviation/Marine . DDV Sunday THROUGH Friday . Boxell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MLWW3 - Milwaukee, WI 13 mi49 min NW 12 G 15 36°F
PWAW3 - Port Washington, WI 26 mi79 min NW 8.9 G 16 36°F 1021 hPa
KNSW3 - Kenosha, WI 36 mi59 min WNW 11 G 18 35°F 1020 hPa (+2.4)

Wind History for Calumet Harbor, IL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Milwaukee-Timmerman, WI5 mi74 minNW 1010.00 miOvercast34°F28°F81%1020.3 hPa
Waukesha County Airport, WI6 mi74 minNW 1310.00 miOvercast30°F28°F93%1020.7 hPa
Milwaukee, General Mitchell International Airport, WI13 mi67 minWNW 14 G 2010.00 miOvercast36°F30°F79%1020.3 hPa

Link to 5 minute data for KUES

Wind History from UES (wind in knots)
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Last 24hrSE9SE6E8SE6
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SE7E9SE7SE6CalmSE4CalmW11NW10W10NW13W12
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1 day agoS4SE4SE7E8SE9
G14
E8E9--SE7--E5E5E3E3S4S3E4E4E4E5CalmE5E8E8
2 days agoCalmE4NE4NE3N5NE10CalmNE8E7E5E5E4CalmCalm--CalmCalmCalmCalmCalmCalmCalmSE4S5

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 GreatLakes    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 Milwaukee/Sullivan, WI (10,2,3,4)
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Ground Weather Radar Station Milwaukee, WI
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weather_mapweather_map weather_map

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Disclaimer:
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.