Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Sturgeon Bay, WI

Version 3.4
NOTICE
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 5:59AMSunset 7:51PM Tuesday August 20, 2019 12:27 PM CDT (17:27 UTC) Moonrise 10:24PMMoonset 10:46AM Illumination 74% 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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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- 1010 Am Cdt Tue Aug 20 2019
Rest of today..S wind 5 to 10 kts. Waves 2 ft or less. Mostly Sunny becoming partly cloudy this afternoon.
Tonight..SW wind 10 to 15 kts veering N after midnight. Waves building to 1 to 3 ft. Isolated showers and Thunderstorms through midnight.
Wednesday..NW wind 10 to 15 kts. Waves 1 to 3 ft. Mostly Sunny.
Wednesday night..N wind 5 to 10 kts. Waves subsiding to 2 ft or less. Mostly clear.
LMZ521 Expires:201908202215;;520440 FZUS53 KGRB 201510 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1010 AM CDT Tue Aug 20 2019 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-202215-


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 201113
afdgrb
area forecast discussion
national weather service green bay wi
613 am cdt Tue aug 20 2019
updated aviation portion for 12z TAF issuance

Short term Today... Tonight... And Wednesday
issued at 303 am cdt Tue aug 20 2019
satellite imagery this morning, shows a couple of mcss, one across
north dakota into northern minnesota and another across southern
minnesota into iowa. Radar, of course, shows a similar trend with
the north dakota convection shifting to the east to east-southeast
this morning. Surface observations show that the storms over north
dakota are developing along and ahead of the surface low and
associated cold front.

Today and tonight: a dry surface ridge will remain in place this
morning, keeping mainly dry conditions in place. During the
afternoon hours, a cold front will approach from the west as a
shortwave also slides through the area. Actually, it looks like the
cold front will approach central north-central wi between 21z 20 and
00z 21. Mu CAPE values ahead of the approaching front are progged to
be in the 1000-2000 j kg range, while shear values along and ahead
of the front are expected to be in the 25 to 35 kt range. The
combination of the two could lead to a couple strong to isolated
severe thunderstorms. In fact, SPC has central into northwest wi
under a marginal risk for severe thunderstorms this afternoon, with
the main threats being hail and isolated strong wind gusts. This
area just brushes against the western portion of the cwa. The main
limiting factor in any severe potential will be the lack of overall
moisture and low-end conditionally stable low to mid-level lapse
rates. Additionally, convective cloud debris could lead to lower
instability values later this morning into the afternoon hours.

The combination of the aforementioned issues, will largely limit
overall coverage of any afternoon thunderstorms across the area.

Most of the hi- res models continue to show very anemic convection
late this afternoon along and ahead of the front. As the front
shifts farther east during the evening hours, instability is
expected to steadily diminish with loss of daytime heating. This
will further limit shower and thunderstorm coverage and intensity
as the system passes through eastern far northeastern wi.

Otherwise, daytime highs will be mainly in the 80s with overnight
lows in the 50s to low 60s.

Wednesday: a dry surface ridge and deep upper-level troughing will
slide across the area throughout the day. This will allow any
precipitation to end and temperatures to cool into the 70s across
much of the area. These temperatures will feel much more comfortable
as well, with afternoon dewpoints dropping into the 40s to low 50s
across the area.

Long term Wednesday night through Monday
issued at 303 am cdt Tue aug 20 2019
dry and cooler than normal conditions are in store for the rest
of the work week, followed by a warming trend and chances for
showers and thunderstorms late in the weekend into early next
week.

Expect northerly flow at the surface and aloft as a surface low
and closed 500 mb move away from the region. This will bring
cooler temperatures to the forecast area. Friday night looks to be
the coldest period during this part of the forecast as a mid
level ridge and surface high pressure pass across wisconsin. Lows
will be around 40 degrees at some locations near the upper
michigan border.

Return flow on the west side of the departing high, and a
transition to southwest flow aloft, will bring warmer temperatures
and increasing chances for rain to the area over the weekend.

There is a chance for thunderstorms across northern and parts of
central wisconsin Sunday afternoon. Chances for storms will spread
across the rest of the area Sunday night and continue on Monday as
a surface system and a mid level short wave trough approach.

Aviation For 12z TAF issuance
issued at 613 am cdt Tue aug 20 2019
some shallow ground fog will quickly dissipate at each of the taf
sites this morning. A cold front will approach and then slide
through the area from northwest to southeast this afternoon into
this evening. Along and ahead of the front, there could be some
scattered showers and thunderstorms. This may briefly reduce
visibility at times and lower ceiling close to MVFR. Rhi CWA auw
may see some showers work into the area by mid to late morning as
an area of thunderstorms slowly diminish as they shift eastward.

Grb watches warnings advisories
None.

Short term... ..Cooley
long term... ... Mg
aviation... ... .Cooley


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 19 mi58 min SSW 6 G 8 74°F 64°F1014.9 hPa
45014 20 mi58 min WSW 5.8 G 5.8 76°F 71°F1015.5 hPa
KWNW3 - 9087069- Kewaunee, WI 28 mi58 min S 5.1 G 7 69°F 1015.4 hPa
NPDW3 - Northport Pier at Death's Door WI 37 mi48 min ESE 5.1 G 6 71°F 1014.9 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Door County Cherryland Airport, WI3 mi92 minS 710.00 miFair74°F62°F67%1015.7 hPa
Menominee - Marinette Twin County Airport, MI21 mi92 minSW 8 G 1510.00 miFair75°F60°F60%1015.9 hPa

Link to 5 minute data for KSUE

Wind History from SUE (wind in knots)
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Last 24hr3NW5--SW5S7S6S6S5S5--------S4S3S3--CalmS3S3--S9S7SW6
1 day agoSW13
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W14SW8W6SW6----NW3--Calm----CalmCalmCalmW3NW4--CalmS6
2 days agoSW63NW4SW4S8SE8S11S8S6S4S5S5S5S6--S5SE5SE8S9--S14
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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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wmap_A
GOES 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 (13,3,4,5)
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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.