Friday, April26, 2019 L-36.com


Marine Weather and Tides
Marinette, WI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:48AMSunset 7:51PM Friday April 26, 2019 3:14 AM CDT (08:14 UTC) Moonrise 2:11AMMoonset 11:28AM Illumination 57% Phase: Waning Gibbous; Moon at 22 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- Rock Island Passage To Sturgeon Bay Wi- 928 Pm Cdt Thu Apr 25 2019
.small craft advisory in effect from Friday afternoon through late Friday night...
Rest of tonight..NW wind 5 to 10 kts. Waves 2 ft or less. Light rain exiting early.
Friday..NW wind 15 to 25 kts with a few higher gusts. Waves 2 to 4 ft. Mostly Sunny.
Friday night..NW wind 10 to 20 kts. Waves 2 to 4 ft. Clear.
Saturday..N wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy in the morning then becoming mostly cloudy.
LMZ521 Expires:201904261015;;493158 FZUS53 KGRB 260228 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 928 PM CDT Thu Apr 25 2019 For waters within five nautical miles of shore on Lake Michigan LMZ521-541-261015-


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 260335
afdgrb
area forecast discussion
national weather service green bay wi
1035 pm cdt Thu apr 25 2019
updated aviation portion for 06z TAF issuance

Short term Tonight and Friday
issued at 333 pm cdt Thu apr 25 2019
a cold front was located over southeast wisconsin this afternoon,
bringing a narrow band of rain showers across the forecast area.

The cold front will continue to track southeast this evening,
allowing the rain showers to exit the region by 06z Friday. Some
model guidance indicated more convective-like precipitation to
develop across the forecast area before ending late this evening.

Confidence was not high enough to put thunder in the forecast due
to the uncertainty of weaker instability over the forecast area.

As the front exits the great lakes region overnight, skies will
clear due to the approaching surface high pressure system over the
northern central plains. Temperatures will be cooler tonight in
the middle 30s to lower 40s.

The surface high pressure system will slowly move over the south
dakota, nebraska, and iowa border by Friday morning. However, a
stronger 850mb jet (30 to 40 kts) will settle over wisconsin by
Friday morning due to a deep surface low positioned over ontario.

As enough mixing will occur during the day, surface winds will
increase. In addition to the gusty winds, dry conditions and
cooler temperatures, mainly in the 50s, are expected. The high
pressure system will track southeast over iowa missouri by Friday
evening allowing winds to slowly decrease over the forecast area.

Long term Friday night through Thursday
issued at 333 pm cdt Thu apr 25 2019
the main forecast concern in the long term is how a low pressure
system, that will pass across northern illinois over the weekend,
will impact the area. A mid level trough is also forecast to pass
through wisconsin this weekend. 12z model runs were consistent in
keeping northern wisconsin dry with the axis of highest QPF near
the illinois border. Precipitation totals with the system were
pretty similar for the forecast area on both the GFS and ecmwf,
while the NAM was much wetter. The snow forecast in the southwest
part of the forecast area was about 1 to 2 inches from the GFS and
ecmwf, while the NAM had more than 6 inches. Have opted to go
closer to the NAM solution to keep more consistent with totals
from adjacent offices. In any case, the axis of highest snowfall
is expected to be south of the forecast area. Dry conditions
should prevail by late Saturday night as the surface system and
upper trough pass east of wisconsin.

Details for later in the long term remain uncertain, so kept the
model blend for late in the weekend through much of next week.

Expect colder than normal high temperatures throughout this part
of the forecast.

Aviation For 06z TAF issuance
issued at 1034 pm cdt Thu apr 25 2019
some MVFR to possibly ifr visibilities are possible where rain has
fallen this evening; however, dry air will filter in from the west
overnight, which will help to improve visibilities. This will be
behind a secondary cold front that will slide through the area
overnight into Friday morning, leading to gusty northwest winds
throughout the day, especially during greater afternoon mixing.

Gusts will likely be in the 20 to 30 knot range Friday. The next
feature of concern will be a low pressure system sliding just to
the south of the area Saturday afternoon into Saturday evening.

This may bring a rain snow mixture to the CWA auw mtw grb atw taf
sites, with the greatest chance being across the farther south taf
sites. This may bring lower ceilings and visibilities; however,
this will depend on how far south the low treks. Dry high pressure
to the north will likely lead to a sharp cutoff in the
precipitation and cloud cover to the north.

Hydrology
Issued at 333 pm cdt Thu apr 25 2019
rivers and streams across northeast wi remain at high levels.

This includes high flows in and around area dams as excess water
is being released from earlier rainfall and snowmelt. While light
rain continues through late this evening, amounts should not
impact current river levels. Please monitor the latest river
forecasts for further information on flooding in your local area.

Grb watches warnings advisories
None.

Short term... ..Hykin
long term... ... Mg
aviation... ... .Cooley
hydrology... ... Hykin


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 1 mi57 min SSW 4.1 G 4.1 46°F 42°F1005.6 hPa28°F
NPDW3 - Northport Pier at Death's Door WI 35 mi35 min Calm G 1.9 41°F 1005.1 hPa
KWNW3 - 9087069- Kewaunee, WI 43 mi57 min NW 2.9 G 5.1 49°F 1004.9 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Menominee - Marinette Twin County Airport, MI3 mi19 minN 00.25 miFog45°F45°F100%1007.7 hPa
Door County Cherryland Airport, WI21 mi19 minWNW 41.25 miFog/Mist48°F46°F96%1008.1 hPa

Wind History from GRB (wind in knots)
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Last 24hrS5SW3S3S4SW9SW6SW4W6SW5W7NW7NW8NW6N9NW9NW5NW4NW3W3W3CalmW3W8W8
1 day agoCalmCalmCalmCalmS6S8S8S11S12S10SW11
G21
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S9S10S11S9S7S7S7S7S7
2 days agoN11
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N10NE8NE9SE8SE6SE7SE4S4SE5CalmCalm

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 (4,6,7,8)
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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.