Thursday, July29, 2021
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Marine Weather and Tides
Manitowoc, 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 5:34AMSunset 8:19PM Thursday July 29, 2021 5:17 AM CDT (10:17 UTC) Moonrise 11:27PMMoonset 11:35AM Illumination 75% 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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LMZ543 Expires:202107291615;;632823 Fzus53 Kgrb 290839 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 339 Am Cdt Thu Jul 29 2021 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz522-542-543-291615- Green Bay South Of Line From Oconto Wi To Little Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 339 Am Cdt Thu Jul 29 2021
Today..N wind increasing to 10 to 15 kts with gusts to 20 kts. Waves 1 to 3 ft. Partly cloudy.
Tonight..N wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft overnight. Mostly clear.
Friday..NE wind 5 to 10 kts veering se early in the afternoon. Waves 1 to 3 ft. Mostly Sunny.
Friday night..SW wind 10 to 15 kts. Waves 2 ft or less. Mostly clear.
LMZ543


7 Day Forecast for Marine Location Near Manitowoc, WI
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location: 44.09, -87.65     debug


Area Discussion for - Green Bay, WI
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FXUS63 KGRB 290828 AFDGRB

Area Forecast Discussion National Weather Service Green Bay WI 328 AM CDT Thu Jul 29 2021

Forecast discussion for routine morning forecast issuance

SHORT TERM. Today . Tonight . and Friday Issued at 327 AM CDT Thu Jul 29 2021

Showers and thunderstorms have ended across the region, but areas of low stratus and fog were forming in northern WI, in the wake of a cold frontal passage. There should be enough wind to prevent widespread dense fog from occurring, and would expect a quick improvement in vsbys early in the morning. Stratus will likely linger until mid to late morning, followed by scattered diurnal cumulus for the rest of the day. RAP/HRRR smoke models depict a band of smoke drifting south through the forecast today into early tonight, but suggest that most of the near-surface impacts will occur well to our west in MN. North to northeast winds will gust to around 20 mph, and bring a less humid Canadian air mass to the region. High temperatures should range from the middle to upper 70s north to the lower to middle 80s south.

Canadian high pressure will bring partly cloudy skies and cooler weather tonight into Friday. Lows tonight should range from the middle to upper 40s north to the 50s south. Highs on Friday will be in the 70s, with very comfortable dew points in the upper 40s to middle 50s.

LONG TERM. Friday Night Through Wednesday Issued at 327 AM CDT Thu Jul 29 2021

The latest ensemble means point towards amplification of the upper air pattern this weekend, followed by deamplification next week. As the upper ridge builds over northwest North America in the Friday- Saturday time period, digging shortwave energy will pass across the region on Saturday and provide the next chance of thunderstorms. Potential for severe weather on Saturday is the main forecast concern in this part of the forecast.

Friday night through Saturday night . High pressure will be centered over the southern Great Lakes at the start of Friday night. It will shift south through the night as clouds increase ahead of a cold front, which is forecast to arrive into far northern WI by late Friday night or early Saturday morning. Minor elevated instability will accompany the front, so will keep a low chance of storms over the far north. While there is some differences of timing of the front on Saturday, indications are that the front will cross the forecast area during the afternoon. Mid-level height falls will provide large scale ascent in a region of 1000-1500 j/kg of instability and deep layer shear around 30 kts. These parameters will favor some strong storms if timing remains around the time of peak heating. Then clearing should occur on Saturday night.

Rest of the forecast . Another shortwave is forecast to move across the area on Monday. The atmosphere will be considerably less unstable than on Saturday, so perhaps only a spotty shower or storm will be possible (most guidance is dry for Monday). With high pressure at the surface, dry and seasonable weather looks to be in the cards through the middle of next week.

AVIATION. for 06Z TAF Issuance Issued at 1236 AM CDT Thu Jul 29 2021

Expect lingering non-severe thunderstorms to shift out of east central WI in the next couple hours. Will also see a brief period of gusty south to southwest winds at ATW/OSH/MTW during that same time period, due to a weak wake low. Anticipate some fog/low clouds will form overnight as winds temporarily diminish near the cool front dropping south through the region. Gusty north winds are expected Thursday, along with diurnal convective clouds.

GRB WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . Kieckbusch LONG TERM . MPC AVIATION . Kieckbusch


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 24 mi17 min WSW 16 G 18 71°F
KWNW3 - 9087069- Kewaunee, WI 27 mi47 min WNW 7 G 11 71°F 1007.6 hPa
GBWW3 36 mi47 min WSW 2.9 G 7 72°F 1009.1 hPa
45014 49 mi47 min W 16 G 18 78°F 74°F1 ft1008.4 hPa

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manitowoc, Manitowoc County Airport, WI4 mi21 minW 10 G 1910.00 miFair70°F69°F97%1009 hPa
Sheboygan County Memorial Airport, WI24 mi24 minWSW 11 G 1710.00 miFair71°F65°F81%1009 hPa

Link to 5 minute data for KMTW

Wind History from MTW (wind in knots)
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Last 24hrCalmCalmSE5E6SE5SE7--5SE9SE8SE7S4S11S11S5NE3E3S6S10NE4SW6W9W8W10
G19
1 day agoW8NW9W17
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NW8NW7W74SE10SE11E8SE10SE7SE6SE3SE3CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoW5W6W6W5NW6W10W10W12W10W5SW6SW7SW8W6E6NE3CalmCalmSW3W6N13
G28
W5CalmNW17
G23

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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