Tuesday, January16, 2018 L-36.com


Marine Weather and Tides
Sturgeon Bay, WI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:22AMSunset 4:42PM Tuesday January 16, 2018 7:25 PM CST (01:25 UTC) Moonrise 7:57AMMoonset 5:28PM Illumination 0% Phase: New Moon; Moon at 0 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- 244 Pm Cst Tue Jan 16 2018
Tonight..NW wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy in the evening then becoming mostly cloudy.
Wednesday..SW wind 15 to 25 kts with a few gale force gusts to around 35 kts. Waves 2 ft or less. Partly cloudy.
Wednesday night..SW wind 15 to 25 kts decreasing to 10 to 15 kts after midnight. Waves 2 ft or less. Mostly clear.
Thursday..SW wind 10 to 15 kts. Waves 2 ft or less. Partly Sunny.
LMZ521 Expires:201801170515;;549921 FZUS53 KGRB 162044 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 244 PM CST Tue Jan 16 2018 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-170515-

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 162322
afdgrb
area forecast discussion
national weather service green bay wi
522 pm cst Tue jan 16 2018
updated aviation portion for 00z TAF issuance

Short term Tonight and Wednesday
issued at 207 pm cst Tue jan 16 2018
weakening low level convergence and steep low level lapse rates
contributing to scattered light snow showers this afternoon over
eastern and northern cwa. Further weakening of the convergence and
increasing mid-level ridging should end bulk of the -shsn by
evening, however a few flurries may persist. Clearing skies and
fresh snow cover should allow temperatures to fall off rapidly this
evening before leveling off as low level winds increase. Lingering
winds of 5 to 10 knots and temperatures falling below zero will
result in wind chills falling to 10 to 15 below zero for a time
overnight.

Tightening pressure gradient between low pressure passing well north
of the u.S. Canada border and strong high pressure sinking into the
southern plains will result in the increasing low level winds late
tonight and on Wednesday. Forecast soundings show the likelihood of
15 to 20kt sustained winds on Wednesday, with gusts of 25 to 30
knots possible. These levels would result in widespread drifting of
the fresh, powdery snow. Some of the snow will become lofted,
resulting in patchy reduced visibilities, especially in door county.

Gusty west winds will pick up momentum over the ice cover on green
bay so wind gusts may exceed 35 knots, possibly requiring a winter
weather advisory or warning for door county.

Long term Wednesday night through Tuesday
issued at 207 pm cst Tue jan 16 2018
Wednesday night and Thursday:
quiet weather is expected Wed night under high pressure, except
for some blowing drifting snow possibly continuing in the east.

A passing wave may bring a little light snow to the northern
forecast area Thursday, with the best chance occurring in the
morning. Little to no accumulation is expected. West to southwest
winds will push high temps to a few degrees above normal for mid-
january.

Friday and Saturday:
dry weather is expected for late week, with a west to southwest
low level flow resulting in even milder temperatures. Highs could
crack 40 in the south by Saturday.

Sunday through Tuesday:
attention then turns to the next big low taking aim at the region
early next week. Models are in decent agreement in taking the low
across or just to the south of the forecast area Sunday night into
Monday, though there are some impactful differences. The
northernmost track among models would result in primarily rain for
the bulk of precip, with maybe an inch or two of snow on the back
side of the low Monday. The farthest south solution would be
mainly snow across roughly the northern half of the forecast, with
rain or a rain snow mix in the south. There is the potential for
significant snowfall accumulations for those in the favored areas
northwest of the low track. Where that area will be though is
definitely still up in the air. This storm continues to bear
watching, with plenty of time left for details to change.

Could see a little light snow Tuesday, as the GFS and canadian
solutions bring a quick wave through. The ECMWF is dry for this
day though.

Temperatures early next week will largely depend on the track of
low pressure, with a northern track resulting in milder temps and
and southern track resulting in colder temps. It should be colder
Tuesday either way as the low departs the area.

Aviation For 00z TAF issuance
issued at 517 pm cst Tue jan 16 2018
the main wx impact on aviation the next 24 hours will be
developing llws. The wind shear will expand southeast across the
area after midnight, continuing and strengthening during the day
tomorrow. Surface winds may increase enough to produce some
blowing snow tomorrow afternoon, especially in eastern wisconsin.

Marine
Issued at 207 pm cst Tue jan 16 2018
tightening pressure gradient will result in gusty west
winds developing late tonight and Wednesday. A few gusts could
reach gale levels, especially east of door county, but not enough
confidence to post gale warning at this time. However, a small
craft advisory GOES into affect Wednesday morning and continues into
Thursday afternoon.

Grb watches warnings advisories
None.

Short term... ..Mbk
long term... ... Ddv
aviation... ... .Skowronski
marine... ... ... mbk


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 19 mi37 min WSW 2.9 G 5.1 15°F 1031.3 hPa10°F
KWNW3 - 9087069- Kewaunee, WI 28 mi37 min NW 4.1 G 4.1 13°F 1031.3 hPa
NPDW3 - Northport Pier at Death's Door WI 37 mi45 min WSW 4.1 G 6 16°F 1031.2 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Door County Cherryland Airport, WI3 mi89 minSSW 37.00 miLight Snow12°F7°F80%1034.4 hPa
Menominee - Marinette Twin County Airport, MI21 mi29 minN 010.00 miFair11°F7°F84%1034.5 hPa

Wind History from SUE (wind in knots)
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Last 24hrN6N9N9N10N8N7--N10N13N18N13N10N8N9NW8NW8N8NW8NW7N6CalmCalmCalmSW3
1 day agoS8----SW11SW6SW8S6S5CalmE3E3--SE13SE13
G17
SE11SE12SE9E9E7E8E6NE6N5N6
2 days agoSW3W6SW5W5SW5W5W5W5SW4SW3SW3SW4SW7SW7SW8SW10SW7SW12S12S11S11S10S10S10

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Green Bay, WI (20,4,5,8)
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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 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.