Wednesday, August5, 2020
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Marine Weather and Tides
Sturgeon Bay, 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 5:42AMSunset 8:13PM Wednesday August 5, 2020 9:19 AM CDT (14:19 UTC) Moonrise 9:40PMMoonset 7:29AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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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LMZ521 Green Bay South Of Line From Cedar River To Rock Island Passage And North Of A Line From Oconto Wi To Little Sturgeon Bay Wi- Green Bay South Of Line From Oconto Wi To Little Sturgeon Bay Wi- 341 Am Cdt Wed Aug 5 2020
Today..NW wind 5 to 10 kts backing sw 10 to 15 kts in the late morning and afternoon. Waves 2 ft or less. Mostly Sunny.
Tonight..SW wind 10 to 15 kts. Waves 2 ft or less. Mostly clear.
Thursday..S wind 5 to 10 kts. Waves 2 ft or less. Mostly Sunny.
Thursday night..SW wind 5 to 10 kts. Waves 2 ft or less. Mostly clear.
LMZ521 Expires:202008051630;;962265 FZUS53 KGRB 050841 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 341 AM CDT Wed Aug 5 2020 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-051630-


7 Day Forecast for Marine Location Near Sturgeon Bay, WI
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location: 44.87, -87.4     debug


Area Discussion for - Green Bay, WI
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FXUS63 KGRB 051140 AFDGRB

Area Forecast Discussion National Weather Service Green Bay WI 640 AM CDT Wed Aug 5 2020

Updated aviation portion for 12Z TAF issuance

SHORT TERM. Today . Tonight . and Thursday Issued at 408 AM CDT Wed Aug 5 2020

Fairly quiet conditions with a steady warming trend expected.

Today: Northeast Wisconsin will be on the southwest edge of upper- level troughing. This will allow for increased mixing during the afternoon hours along with some diurnal CU. A surface ridge centered over northern IL is expected to drift slowly eastward through this afternoon, resulting in steadily increasing southerly flow. The dry surface high is expected to keep all of northeast Wisconsin precipitation free. High temperatures will warm up as southerly flow kicks in on the back side of the ridge and as the upper-level trough axis shifts eastward. Highs are expected to be in the 70s for most locations.

Tonight into Thursday: The aforementioned surface ridge is expected to drift slowly eastward through the night, with the high center reaching southern lower MI by Thursday afternoon. This will allow southerly flow to become more established across the area. The combination of WAA and slightly increased wind flow into the area, will help to keep temperatures a bit warmer than the past couple nights and allow daytime temperatures to warm well into the 70s to around 80. Overnight lows are expected to be in the 50s to around 60. A slow increase in high to mid clouds will likely begin late tonight into the day Thursday. Soundings continue to be very dry with the continued influence of the surface ridge, so most locations are expected to remain dry. There is a small chance that some sprinkles or isolated rain showers could develop along a lake breeze boundary as it moves in from Lake Michigan during the afternoon, but confidence is low enough to keep out of the forecast at this point.

LONG TERM. Thursday Night Through Tuesday Issued at 408 AM CDT Wed Aug 5 2020

The main concern for this forecast period is the potential for showers and storms this weekend into early next week. Increased dew points and temperatures above normal are also expected.

Thursday night through Friday . With the center of a surface high pressure system lingering over Lower Michigan into Friday, conditions over the forecast area are likely to remain dry. However, with warm, moist air lifting into the forecast area on Friday, model guidance continues to hint at an isolated shower or two developing. Not sold on this outcome due to capping during the afternoon, therefore, kept a dry forecast through this time period.

Rest of the extended . An active pattern sets up for the weekend with model guidance showing the potential for multiple MCSs moving through or near the forecast area. This is due to the upper-level zonal flow overhead providing the perfect gateway for any shortwaves riding the flow. The first shortwave looks to move into the Upper Mississippi Valley Friday night, which will bring chances for showers and storms on Saturday. It is still too early to determine the storm mode and coverage with any storms that develop as the timing and exact placement of the MCS is still uncertain. Additional MCSs look to move into/near the region Sunday, Monday, and Tuesday. With so many uncertainties for the weekend/early next week systems, kept the blend of models chance PoPs. However, with the forecast area being in the warm sector for much of the weekend into next week, humid conditions are expected with above normal temperatures.

AVIATION. for 12Z TAF Issuance Issued at 639 AM CDT Wed Aug 5 2020

Good flying conditions can be expected through this TAF issuance. The main flight impacts will be some afternoon diurnal CU development this afternoon and again Thursday afternoon. Bases are expected to be around 5-6kft. Otherwise, some patchy ground fog may form overnight near RHI. Winds are expected to remain below 15 knots with afternoon lake breezes impacting the eastern TAF sites.

GRB WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . Cooley LONG TERM . Hykin AVIATION . Cooley


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 19 mi50 min W 2.9 G 5.1 59°F 73°F48°F
45014 20 mi50 min N 1.9 G 5.8 62°F 1018.4 hPa
KWNW3 - 9087069- Kewaunee, WI 28 mi50 min NE 1.9 G 4.1 66°F
GBWW3 39 mi80 min 59°F 1017.9 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Door County Cherryland Airport, WI3 mi24 minNNW 410.00 miFair63°F53°F70%1019.2 hPa
Menominee - Marinette Twin County Airport, MI21 mi24 minN 010.00 miFair61°F50°F67%1019.1 hPa

Link to 5 minute data for KSUE

Wind History from SUE (wind in knots)
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Last 24hrN13N13
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N13NE8N8N7N5N5N4E4CalmNE4NE4NE4----CalmCalmCalmCalmCalmCalmNW4
1 day agoN11N9N13
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NE6NE5NE9N6NE9N8N6N9N8N10N10N11N11N12
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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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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 Green Bay, WI (10,2,3,4)
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Ground Weather Radar Station Green Bay, 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.