Monday, March27, 2017 L-36.com


Marine Weather and Tides
Marinette, WI

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:38AMSunset 7:15PM Monday March 27, 2017 11:29 AM CDT (16:29 UTC) Moonrise 6:39AMMoonset 6:52PM 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- 1012 Am Cdt Mon Mar 27 2017
This afternoon..NE wind 5 to 10 kts. Waves 2 ft or less. A slight chance of showers.
Tonight..N wind increasing to 10 to 15 kts. Waves 1 to 3 ft. Mostly cloudy.
Tuesday..NE wind 10 to 20 kts. Waves 1 to 3 ft. Mostly Sunny.
Tuesday night..NE wind 10 to 15 kts. Waves 1 to 3 ft. Mostly clear. Wave forecast for ice free areas.
LMZ521 Expires:201703272215;;162618 FZUS53 KGRB 271512 NSHGRB NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE GREEN BAY WI 1012 AM CDT MON MAR 27 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ521-522-541>543-272215-

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 270900
afdgrb
area forecast discussion
national weather service green bay wi
400 am cdt Mon mar 27 2017
forecast discussion for routine morning forecast issuance

Synopsis
Issued at 357 am cdt Mon mar 27 2017
quiet weather for a few days, then the chance for mixed wintry
precipitation will return for the latter part of the work week.

Split flow is in place across north america, and will remain so
through the entire 7 day forecast period. The forecast area will
primarily be under the influence of the southern stream, at least
until late in the period. A series of upper-level cyclones
embedded within the southern stream will slowly cross the country,
with precipitation chances tied to those. Precipitation totals
for the period will probably range above normal across the
southern portion of the forecast area to below normal across the
north. Temperatures will probably not stray too far from seasonal
normals, though any days with widespread precipitation will be
on the chilly side for late march.

Short term Today... Tonight... And Tuesday
issued at 357 am cdt Mon mar 27 2017
the initial upper system in the newly evolved southern stream was
finally pulling away from the area. But plenty of moisture will
linger in its wake, and a weak mid-level shortwave will cross the
area today. A couple small clusters of showers had developed to
the west with that feature. Models generated scattered light
precipitation over the area today, with what focus there was
generally over north-central wisconsin this morning. Opted to keep
low chance pops across the area to account for this.

A few showers or sprinkles could linger into this evening, but
the risk of that seemed too low to add to the forecast so kept it dry
at this point. The main issue tonight is to what extent clouds
clear from the north. Given pretty extensive low cloud deck to the
n/ne this morning, opted for a little slower clearing trend,
especially across the southern part of the forecast area.

Sharpened the north/south gradient in overnight lows to account
for the cloud differential across the area. Will need to watch
areas that clear as fog/stratus could easily redevelop in the
light low-level flow regime.

Northeast flow will probably strengthen on Tuesday as a canadian
anticyclone builds toward ontario. That will help scour out the
clouds, which should allow temperatures to rebound to a little
above normal. The exception will be areas near the lake and bay,
where the flow off the cold water will hold readings back in the
40s.

Long term Tuesday night through Sunday
issued at 357 am cdt Mon mar 27 2017
expect dry weather at the start of this forecast period with
surface high pressure and an upper ridge across the region.

An upper trough that was over the eastern pacific is currently
moving onshore and a closed 500 mb low was forecast to develop by
the time the trough reaches the southwest CONUS during the early
part of the week. 00z models continued to show differences in
their handling of this feature and an associated surface low. The
gfs solution is closer to the ECMWF and canadian that it was 24
hours ago, but there were still noticeable differences.

Precipitation chances return as a surface low approaches the
region and passes southeast of wisconsin. The GFS only had qpf
reaching about the southern half of the forecast area while the
ecmwf and canadian had at least some measurable precipitation
across the entire area by the end of the day on Thursday. The
00z/26 GFS had wisconsin completely dry, so it has shifted north
quite a distance and this makes the ECMWF and canadian solutions
appear to be more likely.

There is a chance for light snow in central wisconsin after 06z
Thursday. Snow should mix with, and then change to, rain as
temperatures warm on Thursday. There could be a few tenths of an
inch of snow accumulation by the time it changes to rain, but that
should quickly melt. Rain chances then spread across the rest of
the forecast area by 00z Friday. A change back to snow is
expected again Thursday night. Precipitation chances start to
decrease after 06z Friday and slowly come to an end from west to
east. Dry conditions are expected across the entire area by 06z
Saturday as the surface low continues to move away from wisconsin.

Precipitation type should continue the pattern of rain during the
day, snow at night, and a transition during the evening and early
morning.

The forecast is dry from 06z Saturday through 18z Sunday with
surface high pressure somewhere in the vicinity of the forecast
area. Models differences were many by Sunday so the model blend
was left as it was, with only slight chances for rain Sunday
afternoon.

Highs start out near normal, then below normal daytime
temperatures return for Thursday and Friday with the clouds and
rain. Weekend highs should be warmer than normal.

Aviation For 12z TAF issuance
issued at 357 am cdt Mon mar 27 2017
after being mixed out by precipitation late yesterday, ceilings
were settling back into the ifr/lifr range. They should rise
during the day, but probably start back down tonight. Confidence
in the forecast for tonight is low, as there is uncertainty as to
how much clearing will work down from the north. Then if clearing
occurs, there is further uncertainty in whether or not fg/st will
redevelop. Plan to bring some ifr fog into the north with the 12z
tafs, though in reality it could end up being an all (vlifr
cigs/vsbys) or nothing (no clouds or fog) situation.

Grb watches/warnings/advisories
None.

Synopsis... ... .Skowronski
short term... ..Skowronski
long term... ... Mg
aviation... ... .Skowronski


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MN4 - 9087088 - Menominee, MI 1 mi41 min ENE 1 G 1.9 36°F 1013.7 hPa35°F
CBRW3 - Chambers Island, WI 14 mi49 min NNW 1.9 G 2.9 39°F 1013.9 hPa
NPDW3 - Northport Pier at Death's Door WI 35 mi49 min WNW 6 G 8 35°F 1014.2 hPa
KWNW3 - 9087069- Kewaunee, WI 43 mi41 min Calm G 1 37°F 1014.1 hPa

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sturgeon Bay, WI21 mi33 minN 510.00 miOvercast38°F35°F89%1016 hPa

Wind History from MNM (wind in knots)
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Last 24hr--------------------E14
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G18
E10E9--------------NE11
1 day ago------------------------------------------------
2 days ago------------------------------------------------

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 (12,3,4,5)
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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.