Saturday, June24, 2017 L-36.com


Marine Weather and Tides
Sturgeon Bay, WI

Version 3.4
What's New / NOTES
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 5:06AMSunset 8:42PM Saturday June 24, 2017 9:02 AM CDT (14:02 UTC) Moonrise 5:51AMMoonset 9:11PM 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- Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 413 Am Cdt Sat Jun 24 2017
Today..W wind 10 to 15 kts. Waves 2 ft or less. A chance of showers in the morning. Showers and scattered Thunderstorms likely in the afternoon.
Tonight..NW wind 10 to 15 kts. Waves 2 ft or less. A chance of Thunderstorms in the evening. Scattered showers overnight.
Sunday..W wind 5 to 10 kts. Waves 2 ft or less. A chance of showers in the morning. Showers and scattered Thunderstorms likely in the afternoon.
Sunday night..NW wind 10 to 15 kts. Waves 2 ft or less. A chance of showers.
LMZ521 Expires:201706241615;;738202 FZUS53 KGRB 240913 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 413 AM CDT Sat Jun 24 2017 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-541>543-241615-

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 241103
afdgrb
area forecast discussion
national weather service green bay wi
603 am cdt Sat jun 24 2017
updated aviation portion for 12z TAF issuance

Short term Today... Tonight... And Sunday
issued at 426 am cdt Sat jun 24 2017
a strong upper low will move across the region
during the afternoon and evening hours. While there is good upper
support, moisture is somewhat lacking, as is the forecasted
instability. There should be lots of showers in the afternoon and
evening. With wet bulb zero heights of 6000' to 7000' and dry air
near the surface, small hail and gusty winds are likely. High
temperatures today will be around 10 degrees below normal. Cold
air funnels are not out of the question.

Showers and scattered thunderstorms should diminish after sunset, except
over northeast wisconsin where showers could continue overnight. Lows
tonight should be 5 to 10 degrees below normal.

Sunday will have another upper trough move by during the afternoon
and evening with showers and some thunderstorms especially in the
afternoon and evening. Cold temperatures aloft and dry air near
the surface will allow for some gusty winds and small hail. High
temperatures will be 10 to 15 degrees cooler than normal.

Long term Sunday night through Friday
issued at 426 am cdt Sat jun 24 2017
the mean flow over the CONUS will undergo a transformation from a
western upper ridge eastern upper trough (early in the week), to
a western upper trough modest eastern upper ridge (late in the
week). While the models agree that temperatures will warm to or go
slightly above normal by next Thursday Friday, precipitation
timing remains the main forecast challenge as models struggle with
the mean flow transition. Latest thinking is for a brief period of
dry weather Monday night into Tuesday night, then unsettled
weather returns for mid to late week especially as gulf moisture
gets pulled northward.

A cool, cyclonic flow will persist into Sunday night, along with
the passage of another shortwave trough. Even with the loss of
daytime heating and less instability, still anticipate decent
mid-level forcing through the night, thus a chance of showers will
continue through the night. Despite plenty of clouds around, the
air mass aloft is quite cool, thus min temperatures will be able
to dip into the middle 40s north-central wi, upper 40s central far
northeast wi and lower 50s east-central wi. One more day of
cyclonic flow over the western great lakes region on Monday and
with daytime heating, expect another chance for showers afternoon
thunderstorms to pop-up. Activity will again be scattered, so
there should be some dry hours in between the showers (i.E., not
washout). MAX temperatures to be in the lower to middle 60s
north-central, mainly upper 60s elsewhere.

Any precipitation will end early Monday evening as the upper
trough shifts east, the upper ridge gets shoved toward the
northern central plains and upper heights build toward the great
lakes. Furthermore, an area of high pressure is forecast to build
into wi Monday night. Look for clearing skies, diminishing winds
and temperatures similar to Sunday night. Tuesday is still shaping
up to be a pleasant day across the forecast area as the high
pressure gradually shifts east-southeast into the eastern great
lakes ohio valley. A return to southerly winds and onset of waa
will bring a boost to temperatures. Under mostly sunny skies, look
for MAX temperatures to reach the lower 70s north-central near
lake mi, to the middle to upper 70s elsewhere.

As the weakening upper ridge reaches the western great lakes
Tuesday night, the mean flow will begin to shift to the west-
southwest and the models do bring a shortwave trough into the
upper ms valley by 12z Wednesday. The GFS is still a little faster
with this approaching system than the ecmwf, however the timing is
better than what was advertised 24 hours ago. Expect clouds to
increase Tuesday night with a chance of showers thunderstorms
mainly after midnight. This shortwave trough would then move into
wi on Wednesday with a trailing cold front to push across the
upper ms valley. Look for an increasing threat for showers, with
enough instability to support a chance of thunderstorms across
northeast wi on Wednesday. MAX temperatures for Wednesday will
continue to run a couple of degrees below normal with lower 70s
north-central lakeshore, middle to upper 70s elsewhere.

Showers thunderstorms are progged to continue into Wednesday night
as the cold front drives through wi and interacts with an unstable
atmosphere. Much too early to determine if any of these storms may
become strong to severe, just something to watch in the coming
days. The precipitation is expected to diminish later Wednesday
night into Thursday morning as the cold front settles to our
south. It is looking like most of Thursday will be dry over
northeast wi as the thunderstorm activity fires up to our south
where the cold front is likely to stall as it becomes parallel to
the mean flow aloft. If we can get enough mixed sunshine, max
temperatures on Thursday could get to near normal levels which is
middle 70s north-central lakeshore, upper 70s to lower 70s
elsewhere.

The chance of showers thunderstorms return to at least the
southern half of wi Thursday night as a 30 knot southwest low-
level jet pulls gulf moisture northward over the stalled frontal
boundary still situated to our south. The GFS hints at a surface
wave to move along this boundary which adds more lift to generate
precipitation. The forecast for Friday would depend on what
happens to this frontal boundary, whether it remains stationary or
sinks south from the convection. Since this is practically
impossible to determine this far out, prefer to keep a chance of
showers storms in the forecast Friday with temperatures a little
cooler due to clouds precipitation chances.

Aviation For 12z TAF issuance
issued at 603 am cdt Sat jun 24 2017
upper level disturbances will move across the area today and
Sunday and produce showers and a few thunderstorms, especially in
the afternoon and evening hours. Much of the time it will beVFR,
but MVFR or ifr conditions will accompany the showers and
thunderstorms.

Grb watches warnings advisories
None.

Short term... ..Rdm
long term... ... Kallas
aviation... ... .Rdm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 19 mi50 min W 5.1 G 9.9 1009.6 hPa
45014 20 mi32 min W 12 G 14 60°F 1010.5 hPa
CBRW3 - Chambers Island, WI 23 mi82 min WNW 4.1 G 11 60°F 1009.8 hPa
KWNW3 - 9087069- Kewaunee, WI 28 mi50 min NW 6 G 12 61°F 1010.2 hPa
NPDW3 - Northport Pier at Death's Door WI 37 mi82 min NW 12 G 14 60°F 1009.5 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Door County Cherryland Airport, WI3 mi66 minW 910.00 mi60°F55°F84%0 hPa
Menominee - Marinette Twin County Airport, MI21 mi66 minVar 310.00 miA Few Clouds59°F54°F83%1011.9 hPa

Wind History from SUE (wind in knots)
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Last 24hrNW8W8W8W7W13
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NW13W12W10W8W9W7NW6W5W4W5W5NW6W7--NW9W9
1 day agoW13SW11SW9W10W4SW9NW8SW4SW6S7SW5S5NW3CalmSW4S4SW4W5W4NW5W5SW3W7NW6
2 days agoNW4N3NW5W8SE5SE5SE11SE11S13S11
G17
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S10S8S8S9S9S6S11S14S9SW7S9SW7SW8

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
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

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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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.