Friday, May26, 2017 L-36.com


Marine Weather and Tides
Marinette, 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 5:11AMSunset 8:26PM Friday May 26, 2017 12:32 AM CDT (05:32 UTC) Moonrise 6:15AMMoonset 9:26PM Illumination 0% Phase: New Moon; Moon at 1 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- 913 Pm Cdt Thu May 25 2017
Rest of tonight..N wind 5 to 10 kts. Waves 2 ft or less. Patchy dense fog after midnight.
Friday..SE wind 5 to 10 kts. Waves 2 ft or less. A slight chance of showers in the afternoon.
Friday night..SE wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy.
Saturday..S wind 5 to 10 kts. Waves 2 ft or less. Partly Sunny.
LMZ521 Expires:201705261015;;211052 FZUS53 KGRB 260213 NSHGRB NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE GREEN BAY WI 913 PM CDT THU MAY 25 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ521-522-261015-

7 Day Forecast for Marine Location Near Marinette, WI
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location: 45.09, -87.58     debug


Area Discussion for - Green Bay, WI
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Fxus63 kgrb 260241
afdgrb
area forecast discussion
national weather service green bay wi
941 pm cdt Thu may 25 2017
updated aviation portion for 06z TAF issuance

Synopsis
Issued at 244 pm cdt Thu may 25 2017
the holiday weekend will start out mild with just some scattered
light precipitation, but likely end on a little cooler and more
showery note.

The upper pattern over eastern north america will gradually
transition from a somewhat blocky regime to fairly consolidated
northwest flow during the period. The upper low currently over the
eastern great lakes region will shift east. That will allow the
upper flow to temporarily back to the southwest ahead of the next
approaching upper system dropping southeast from canada. That
system will slow and linger in the lake superior region next week
as ridging strengthens back upstream along the west coast.

Temperatures will be near seasonal normals early in the period,
then drop back to a little below normal in the developing
northwest upper flow next week. There will be several
opportunities for precipitation, but most precipitation events
look to be composed of scattered to numerous showers rather than
widespread soaking rains. As such, amounts are likely to end up
near normal for the 7 day period.

Short term Tonight and Friday
issued at 244 pm cdt Thu may 25 2017
satellite and a few developing radar returns suggest some
sprinkles or light showers could still develop over northeast
wisconsin during the late afternoon. The cellular clouds across
the area will dissipate with the loss of heating, and mid and high
clouds with the next system are still pretty far to the west. So
backed down on skycon for tonight. Light winds under the ridge
axis could allow some fog and stratus to form however, especially
in the east.

Precipitation chances for Friday look modest at best. The upper
ridge will be flattening across the area as upper speed MAX and
mid-level shortwave drive into the region from the west. But
moisture will be limited and mid-level lapse rates are modest. So
kept pops in the chance category, with the best chances across the
west and southwest.

Long term Friday night through Thursday
issued at 244 pm cdt Thu may 25 2017
500mb pattern across north america will be dominated by a western
ridge and eastern trough. Northwest flow pattern will continue
across the western great lakes through much of next week. Weak
disturbances and associated weak cold fronts will trigger
showers and some thunderstorm activity from time to time during
the period.

For Friday night, any instability showers should end during the
evening, except across the far north where a few showers may
linger overnight. Per latest numerical guidance, did add some
patchy fog into the forecast. On Saturday, a weak boundary will
move across central and northeast wisconsin. This feature may
trigger a few showers along it. Based on the latest model trends,
expand rain chances eastward as the lakebreeze boundary may also
trigger shower activity. Any shower activity should end Saturday
evening. Attention then turns to another shortwave and associated
cold front that moves into the region during the day Sunday. This
system still has some intrigue with respect to potential
thunderstorm activity. Models continued to show 300 to 500 j kg
of cape, lifted indices dropping to 0c to -5c depending on model
of choice, and steep mid level lapse rates around 6.5 c km. What
makes this event more intriguing is that the 0-6km wind shear
has substantially increased to 25 to 30 knots compared to
yesterday. Low wet bulb heights around 7000 feet also noted
along with some dry air in the mid levels. If this feature
should move into the area during the peak heating of the day,
some of the storms could produce some gusty winds, small hail
and brief heavy rain. Model timing is somewhat uncertain, but
will need to watch. Any thunderstorm activity should end Sunday
evening.

More instability showers are in the forecast for memorial day
along with a slight chance of thunderstorms. The northwest flow
pattern and disturbances moving through the mean pattern will
bring off and on chances for showers Tuesday and Wednesday. Could
not rule out a thunderstorm during this period, but too low to
put into the forecast at this time. Low confidence in the dry
forecast for Thursday based on the weather pattern. Mild
temperatures are expected this weekend, then trend below normal
for much of next week.

Aviation For 06z TAF issuance
issued at 940 pm cdt Thu may 25 2017
vfr conditions expected for the remainder of the
evening and most of the overnight hours. Patchy to areas of
MVFR ifr fog may develop late tonight near the surface ridge over
eastern wisconsin. Mid levelVFR clouds will spread over the
western half of the state overnight along with isolated light
showers. Clouds will continue to spread over the region late
tonight into Friday morning. Scattered showers will work over the
western half of the state later Friday morning into the afternoon
and then eastern areas late Friday afternoon.

Grb watches warnings advisories
None.

Synopsis... ... .Skowronski
short term... ..Skowronski
long term... ... Eckberg
aviation... ... .Tdh


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 1 mi44 min W 2.9 G 4.1 1007.8 hPa
CBRW3 - Chambers Island, WI 14 mi52 min NNW 1.9 G 6 51°F 1008.1 hPa
SYWW3 - Yacht Works Sister Bay WI 26 mi116 min NNW 8 G 8.9 50°F
NPDW3 - Northport Pier at Death's Door WI 35 mi52 min WNW 2.9 G 6 51°F 1008.5 hPa
KWNW3 - 9087069- Kewaunee, WI 43 mi44 min WNW 1.9 G 1.9 53°F 1008.1 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Menominee, Menominee-Marinette Twin County Airport, MI3 mi96 minNW 310.00 miFair52°F50°F93%1010.5 hPa
Sturgeon Bay, WI21 mi36 minNNW 410.00 miFair51°F50°F96%1010.9 hPa

Wind History from GRB (wind in knots)
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Last 24hrN7N5N6N6N5N6N7N10NE11NE13NE12NE13NE12NE14NE16
G23
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1 day agoNE13NE16
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NE12NE12NE13NE11NE10NE11N11N14
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2 days agoE5E4E4E7E8E6E8E6NE9NE13NE15NE13NE13NE15
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NE14NE9NE10NE9NE7NE6NE9NE10NE18
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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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Green Bay, WI (1,6,7,8)
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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.