Thursday, July29, 2021
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Marine Weather and Tides
Williams Bay, WI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 5:42AMSunset 8:18PM Thursday July 29, 2021 10:46 AM CDT (15:46 UTC) Moonrise 11:31PMMoonset 11:38AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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- 906 Am Cdt Thu Jul 29 2021
.small craft advisory in effect from this evening through Friday morning...
Rest of today..North wind 10 to 15 knots. Gusts up to 20 knots. Partly Sunny. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon.
Tonight..North wind 15 to 20 knots. Mostly clear. Waves 3 to 4 feet building to 4 to 6 feet after midnight.
Friday..North wind 15 to 20 knots easing to 10 to 15 knots in the late morning and early afternoon, then veering northeast late in the afternoon. Sunny in the morning then becoming partly Sunny. Waves 4 to 6 feet subsiding to 3 to 4 feet in the late morning and afternoon.
Friday night..Northeast wind 5 to 10 knots veering east late in the evening, then veering southwest after midnight becoming southwest 5 to 10 knots early in the morning. Partly cloudy. Waves 1 to 2 feet.
LMZ646 Expires:202107292200;;644809 FZUS53 KMKX 291406 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 906 AM CDT Thu Jul 29 2021 For waters within five nautical miles of shore on Lake Michigan LMZ646-292200-


7 Day Forecast for Marine Location Near Williams Bay, WI
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location: 42.55, -88.5     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 291405 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 905 AM CDT Thu Jul 29 2021

UPDATE. (Issued 905 AM CDT Thu Jul 29 2021)

Made just some minor tweeks for cloud cover trends.

SHORT TERM. (Issued 454 AM CDT Thu Jul 29 2021)

Today through Friday:

The thunderstorms and heavy rainfall over Lafayette and Green Counties will shift swd into IL over the next hour or two. This coincides with the wly low level jet shifting south as the cold front approaches from the north. The high clouds and some stratus this morning will then transition to partly cloudy skies for the afternoon. Nly winds and gradual cold advection will continue through the day into tonight. Thus temps will be cooler on Friday versus today. High pressure will move across srn WI Friday afternoon.

Gehring

LONG TERM. (Issued 454 AM CDT Thu Jul 29 2021)

Friday night through Wednesday:

The high will shift south of the area for Fri nt and Sat while weak low pressure moves from the nrn Great Lakes to the Lower Great Lakes for the weekend. Thus swly winds and warmer temps will return for Sat, but also with chances for showers and storms with the cold frontal passage in the afternoon and early evening.

High pressure and pleasant temps will then prevail for early next week as nly flow aloft continues.

Gehring

AVIATION. (Issued 905 AM CDT Thu Jul 29 2021)

High pressure will gradually take over the region. Extensive cloud cover with some MVFR cigs continue to cover much of the area but these will gradually exit and mix out a bit as the remainder of the morning wears on. However with low level thermal troughing in place some additional CU redevelopment is plausible. Northwest winds will become more northerly and eventually northeast this afternoon into tonight.

MARINE. (Issued 454 AM CDT Thu Jul 29 2021)

A cold front will move south across Lake Michigan this morning. Breezy north winds are expected and will last through tonight. High pressure of 30.1 inches will then move across the lake Friday afternoon. The high will move south while weak low pressure tracks from the northern Great Lakes to the Lower Great Lakes for the weekend. Modest southwest winds will develop over Lake Michigan for Friday night into Saturday, followed by another cold front bringing breezy northerly winds for Saturday night and Sunday. A Small Craft Advisory is in effect from Sheboygan to Winthrop Harbor from 10 PM tonight until 10 AM Friday for persistent north to northeast winds and waves building to 3 to 5 feet.

Gehring

BEACHES. (Issued 454 AM CDT Thu Jul 29 2021)

There is a high swim risk tonight for the Lake Michigan beaches from Sheboygan County south to Kenosha County due to north to northeast winds and waves of 3 to 5 feet. A Beach Hazard Statement may be issued later today.

Gehring

MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . Small Craft Advisory . LMZ643-LMZ644-LMZ645-LMZ646 . 10 PM Thursday to 10 AM Friday.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KNSW3 - Kenosha, WI 37 mi47 min NW 13 G 23 80°F 1012.2 hPa (+1.7)
45187 38 mi27 min 78°F 69°F1 ft
45186 39 mi27 min 16 G 21 79°F 67°F1 ft
WHRI2 - Waukegan Harbor, IL 39 mi107 min WNW 13 G 18 80°F
MLWW3 - Milwaukee, WI 45 mi37 min NNW 11 G 18 79°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burlington Municipal Airport, WI14 mi72 minWNW 13 G 1710.00 mi80°F71°F74%1013.2 hPa

Link to 5 minute data for KBUU

Wind History from BUU (wind in knots)
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Last 24hrSW5SW5CalmSW4CalmCalmW5SW4W3CalmCalmSW4CalmCalmCalmSW6S4SW7W6W3NW8NW6W9NW15
G18
1 day agoSW7SW8
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SW11W6SW9SW6SW7CalmCalmCalmCalmCalmCalmCalmCalmSW3SW5SW5CalmCalmCalmCalmSW4
2 days agoCalmSW5SW6W6W5SW6SW6SW4SW3SW3SW3SW3SW3S4SW6CalmSW3CalmCalmCalmN7CalmNE4W3

Tide / Current Tables for
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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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