Thursday, December12, 2019
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Marine Weather and Tides
Suamico, WI

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:17AMSunset 4:13PM Thursday December 12, 2019 5:04 AM CST (11:04 UTC) Moonrise 5:49PMMoonset 8:38AM Illumination 100% Phase: Full Moon; Moon at 15 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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LMZ522 Expires:201912121730;;232242 Fzus53 Kgrb 121006 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 406 Am Cst Thu Dec 12 2019 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz521-522-121730- 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- 406 Am Cst Thu Dec 12 2019
Today..SE wind 10 to 20 kts veering sw 10 to 15 kts early in the afternoon. Waves 1 to 3 ft. Snow. A chance of light freezing rain late in the afternoon.
Tonight..W wind 5 to 10 kts veering N in the late evening and overnight. Waves 2 ft or less. A chance of light snow and freezing drizzle in the evening.
Friday..NE wind 5 to 10 kts veering E early in the afternoon. Waves 2 ft or less. Cloudy.
Friday night..W wind 5 to 10 kts veering nw after midnight. Waves 2 ft or less. A chance of light snow, drizzle and freezing drizzle.
LMZ522


7 Day Forecast for Marine Location Near Suamico village, WI
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location: 44.66, -87.95     debug


Area Discussion for - Green Bay, WI
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FXUS63 KGRB 120957 AFDGRB

Area Forecast Discussion National Weather Service Green Bay WI 357 AM CST Thu Dec 12 2019

Forecast discussion for routine morning forecast issuance

SHORT TERM. Today . Tonight . and Friday Issued at 356 AM CST Thu Dec 12 2019

Winter weather headlines will be the main concern today.

Only minor changes to headline timing, with a later start time for the southern tier of counties, including the northern Fox Valley.

Light snow continued to develop over northern WI, in association with the RRQ of an upper level jet and strong WAA. This initial band of snow was lifting northeast, leaving central WI and the Fox Valley dry at this early hour. Bands of snow are expected to continue to form over northern WI early this morning, though lingering dry air in the low-levels may limit the intensity and result in some breaks in the steady snow at times, especially over the far northeast. The snow is expected to become heavier and more widespread from west to east during the morning as low pressure approaches and the low-level jet cranks up to 40 to 45 knots. A potent short-wave over the Dakotas will provide additional forcing as it moves through the region during the afternoon. The heaviest snow is expected from mid-morning through mid-afternoon. Moisture will shallow out during the mid to late afternoon, leading to the potential for freezing drizzle. Do not think the freezing drizzle will be very impactful, as it will be falling on snow covered or treated roads. Snowfall totals will range from 1 to 3 inches south to 5 to 7 inches north. Highs will range from the upper teens northwest to the lower 30s southeast.

Lingering light snow or freezing drizzle will taper off in eastern WI this evening, with mostly cloudy skies persisting through the night. Lows will be in the teens northwest and lower to middle 20s southeast.

Weak low pressure/inverted trough will approach the region Friday afternoon, and bring a small chance of light snow or freezing drizzle, especially across our western counties. Highs will be in the 20s and lower 30s.

LONG TERM. Friday Night Through Wednesday Issued at 356 AM CST Thu Dec 12 2019

The main highlights for this forecast period are the chances for accumulating snow Friday night through Saturday and below normal temperatures for next week.

Friday Night through Saturday . An upper-level shortwave trough will move into the Upper Mississippi Valley Friday night. Questions then arise with the surface low pressure system/cold front. Model guidance is not in agreement with the track of this system or amount of moisture associated with it, and shows some phasing problems. However, there is some agreement with weak forcing during this time, making for light snow accumulations. Do to much uncertainty with this system, did not steer much from model blend.

Rest of the forecast . By Saturday night, the upper-level trough will shift east leaving behind chances for light lake effect snow showers over far north-central Wisconsin. A surface high pressure system will then push into the northern Plains funneling cold Canadian air into the forecast area. Therefore, temperatures beginning Sunday morning through the rest of the extended will remain below normal. A small break in the below normal temperatures may occur on Monday as model guidance shows a low pressure system moving into the Midwest from Oklahoma on Monday. This system could bring some snow to southeastern Wisconsin, however, models are not in agreement with the track of this system. Beyond this system, another area of high pressure will move into the northern Plains bringing more cold Canadian air to the region through midweek.

AVIATION. for 06Z TAF Issuance Issued at 1042 PM CST Wed Dec 11 2019

Good flying weather expected through much of the overnight hours. MVFR conditions and light snow will arrive late tonight across central and northcentral Wisconsin. IFR weather and snow is expected across the entire region Thursday. The heaviest snow and lowest flight conditions will be north of an AUW to SUE line. Snowfall totals will range from 5 to 7 inches across far northeast Wisconsin, to 3 to 6 inches across much of north- central Wisconsin, and 2 to 4 inches across portions of central and east- central Wisconsin. Conditions will improve Thursday afternoon and evening as the snow ends from west to east, with MVFR conditions developing as the snow winds down. Some freezing drizzle is also possible across central and east-central Wisconsin as the heaviest snow ends.

GRB WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory from 9 AM this morning to 6 PM CST this evening for WIZ037>040.

Winter Weather Advisory until 6 PM CST this evening for WIZ005- 010-018>022-030-031-074.

Winter Weather Advisory until 6 PM CST this evening for WIZ035- 036.

Winter Storm Warning until 6 PM CST this evening for WIZ011>013- 073.

SHORT TERM . Kieckbusch LONG TERM . Hykin AVIATION . Kurimski


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWNW3 - 9087069- Kewaunee, WI 28 mi47 min Calm G 4.1 13°F 1029.6 hPa
MN4 - 9087088 - Menominee, MI 36 mi47 min N 4.1 G 5.1 35°F1030.3 hPa
CBRW3 - Chambers Island, WI 49 mi35 min Calm G 1.9 11°F

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Green Bay, Austin Straubel International Airport, WI16 mi72 minNE 710.00 miOvercast11°F1°F67%1032 hPa

Link to 5 minute data for KGRB

Wind History from GRB (wind in knots)
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Last 24hrW9W9W11W11W13W13W9W10W9W9SW12SW73CalmCalmCalmCalmCalmS3CalmCalmE3NE7NE5
1 day agoW11NW12W10W12W12W13W13W13W11W12W14W10W9W9W8W9W6SW5SW6SW6SW7W12
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2 days agoNE12NE10N9NE8N8N10N10NE11N7NE4NW5NW7N10N17
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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 (6,6,7,8)
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Ground Weather Radar Station Green Bay, WI
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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 numerious 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.