Monday, September20, 2021
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Marine Weather and Tides
Kewaunee, 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 6:34AMSunset 6:53PM Monday September 20, 2021 12:02 AM CDT (05:02 UTC) Moonrise 7:11PMMoonset 5:55AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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LMZ542 Expires:202109201030;;882671 Fzus53 Kgrb 200209 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 909 Pm Cdt Sun Sep 19 2021 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz541>543-201030- Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 909 Pm Cdt Sun Sep 19 2021
.small craft advisory in effect through Tuesday afternoon...
Rest of tonight..S wind 10 to 20 kts. Waves 2 to 4 ft. Clear becoming partly cloudy early Monday morning.
Monday..S wind 10 to 20 kts increasing to 15 to 25 kts in the late morning and afternoon. Waves 3 to 5 ft building to 5 to 8 ft in the afternoon. A chance of showers.
Monday night..S wind 20 to 30 kts veering W 15 to 25 kts after midnight. A few gale force gusts to 35 kts before midnight. Waves 6 to 10 ft. Showers and a chance of Thunderstorms after midnight.
Tuesday..NW wind 10 to 20 kts. Waves 4 to 7 ft subsiding to 2 to 4 ft in the afternoon. Mostly cloudy.
LMZ542


7 Day Forecast for Marine Location Near Kewaunee, WI
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location: 44.45, -87.49     debug


Area Discussion for - Green Bay, WI
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FXUS63 KGRB 200453 AFDGRB

Area Forecast Discussion National Weather Service Green Bay WI 1153 PM CDT Sun Sep 19 2021

Updated aviation portion for 06Z TAF issuance

SHORT TERM. Tonight and Monday Issued at 236 PM CDT Sun Sep 19 2021

The main point of emphasis over the next 24 hours will be on precipitation chances mainly over eastern WI Monday morning and timing of main band of showers/storms headed toward central WI late Monday afternoon.

The 19Z MSAS surface analysis showed high pressure over the eastern Great Lakes, an area of low pressure just north of Lake Winnipeg and another low pressure over the northern Plains. A cold front connected the lows from southern Manitoba southwest through the northern Plains into the central High Plains. Visible satellite imagery indicated clear skies over northeast WI with cirrus clouds to the west and cumulus clouds to our south.

A mild night is in store across northeast WI as south-southeast winds at 5 to 10 mph at the surface and stronger southerly winds aloft pull warm/more moist air into the region. Look for min temperatures to be in the upper 50s to lower 60s north, lower to middle 60s south.

The quiet weather pattern comes to an end on Monday as a two- pronged precipitation event takes aim at northeast WI. First, a mid-level shortwave trough is forecast to lift northeast into the region by late Monday morning in sync with an influx of gulf moisture that will steadily increase through the day. This little system to bring a chance of showers/slight chance of thunderstorms mainly to eastern WI from late morning into mid-afternoon. The second precipitation event would approach central WI late in the afternoon as a cold front moves into western WI. Most of the models show showers/thunderstorms to be along the cold front, however cannot rule out some precipitation developing ahead of the boundary. Thus, will have increasing pops across central WI in the afternoon with the bulk of the locally heavy rain, marginal risk of severe storms holding off until Monday evening. Max temperatures for Monday to range from the middle 70s near Lake MI, middle 70s to around 80 degrees inland.

LONG TERM. Monday Night Through Sunday Issued at 236 PM CDT Sun Sep 19 2021

Models still not fully in agreement on precip chances leading into the cold front passage Monday night. NBM solution remained similar with timing of frontal precipitation and that solution is supported across the state starting at 00Z Tuesday. Thunderstorm activity looks to be mainly associated with the frontal band that moves through northeast WI between 00Z and 06Z. Some storms could be severe mainly based on wind threat.

Cooler and breezy conditions will surge into the area behind the front for Tuesday. A few spotty showers may linger over far north- central WI on Tuesday morning, but a gradual clearing is expected through the day. Temps on Tuesday will fall back into the 60s. Surface high pressure will build towards the region on Tuesday night, but the gradient may be just enough to prevent a frost threat. A few lows may fall into the upper 30s though.

Cooler weather is then forecast for the rest of the week. With the high directly over the region, Wednesday night still looks to have the highest potential for frost; after that, temperatures moderate. High temps Wednesday onward look to range mainly from the upper 50s to near 70 degrees.

AVIATION. for 06Z TAF Issuance Issued at 1150 PM CDT Sun Sep 19 2021

VFR conditions are expected overnight. Strong winds just above the surface warrants the mention of LLWS in the central and north- central WI TAF sites through mid-morning Monday. Southerly surface winds will increase Monday afternoon with gusts up to 25 kts.

Spotty showers are possible at time through Monday, as CIGs will likely fall to MVFR conditions during the daytime.

A line of moderate to, at times heavy, rain will move across Wisconsin from west to east after sunset. For now, mostly left thunder mention out of the forecast . but may need to adjust in future TAF updates.

GRB WATCHES/WARNINGS/ADVISORIES. Beach Hazards Statement from 10 AM CDT Monday through Tuesday afternoon for WIZ022-040-050.

SHORT TERM . Kallas LONG TERM . ML AVIATION . Kotenberg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWNW3 - 9087069- Kewaunee, WI 1 mi45 min Calm G 1 63°F 1014.2 hPa
GBWW3 28 mi51 min 73°F 1014.4 hPa
MN4 - 9087088 - Menominee, MI 45 mi45 min S 6 G 8.9 69°F 67°F1013.9 hPa65°F

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manitowoc, Manitowoc County Airport, WI23 mi67 minN 09.00 miFair66°F66°F100%1015.5 hPa

Link to 5 minute data for KMTW

Wind History from MTW (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmS10S11S14S14S11S13S10S13S10S10S6SE4S5S4Calm
1 day agoNW4NW3CalmNW3N4N5CalmCalmCalmE3SE8SE6S7SE8SE8SE8E6E3SE4CalmCalmCalmCalmCalm
2 days agoS10S8S7S9S7S6CalmS3S4S5SW7SW12
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W9W11NW6NW13N10NW7NW7N3CalmCalm

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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