Saturday, December16, 2017 L-36.com


Marine Weather and Tides
Brookfield, WI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 7:16AMSunset 4:20PM Saturday December 16, 2017 8:55 AM CST (14:55 UTC) Moonrise 6:32AMMoonset 4:38PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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LMZ644 Port Washington To North Point Light Wi- 705 Am Cst Sat Dec 16 2017
Today..Northeast wind 5 to 15 knots veering east 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Slight chance of snow in the morning. Waves around 1 foot building to 2 to 4 feet in the late morning and afternoon.
Tonight..East wind 10 to 15 knots becoming east 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Mostly cloudy. Waves 2 to 4 feet.
Sunday..East wind 10 to 15 knots with gusts to around 20 knots becoming east 10 to 15 knots late in the morning, then becoming southeast 5 to 10 knots in the afternoon. Cloudy. Waves 2 to 4 feet.
Sunday night..West wind 5 to 10 knots. Cloudy. Waves around 1 foot. Wave heights are for ice free areas.
LMZ644 Expires:201712161700;;977510 FZUS53 KMKX 161305 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 705 AM CST Sat Dec 16 2017 For waters within five nautical miles of shore on Lake Michigan LMZ644-161700-

7 Day Forecast for Marine Location Near Brookfield, WI
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location: 43.06, -88.11     debug


Area Discussion for - Milwaukee/Sullivan, WI
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Fxus63 kmkx 161126
afdmkx
area forecast discussion
national weather service milwaukee sullivan wi
526 am cst Sat dec 16 2017

Update
Light snow showers are beginning to taper off across the far
northeastern corner of the cwa. This trend will continue, with
precip ending by mid morning at the latest.

Aviation(12z tafs)
Light easterly winds are expected today and tonight across the
area. Ceilings will initially beVFR this morning, but will lower
as the day GOES on as moisture increases. MVFR is expected by
afternoon or evening, then ifr is expected overnight for most
locations.

Prev discussion (issued 205 am cst Sat dec 16 2017)
discussion...

early this morning through tonight... Forecast confidence is
medium to high...

a band of light snow continues across the northeastern corner of
the forecast area early this morning. This snow remains very
light, with just minor additional accumulations expected through
sunrise.

As the precipitation ends this morning, a very brief period of
freezing drizzle is possible, at least in pockets across the fond
du lac and sheboygan areas as cloud ice begins to dissipate.

Right now, it doesn't look like any freezing drizzle would be
widespread enough to cause significant impacts, but it'll be
something to keep an eye on this morning.

A few peeks of Sun will be possible in counties adjacent to the
illinois state line today, but everywhere to the north will remain
cloudy. Temperatures will reflect the range in sunshine, with
readings near 40 along the state line, to just the low to mid 30s
across the highway 23 corridor.

Skies will remain overcast tonight, with temperatures falling back
into the 20s area-wide.

Sunday and Sunday night - confidence... Medium
broad mid level wave passes to our south. Surface low proggd to
near or into SRN wi midday into the afternoon. Another mild day
though cloud cover expected to be stubborn. Models trending precip
to our south and blended guidance just clips our far southeast.

Surface trough passes with nearly neutral or even positive thermal
advection. Any clearing Sunday night could set up a fog scenario
though llvl moisture for now is keeping the stratus in check with
progd MOS surface vsbys not reflective of fog at this time.

Monday through Tuesday night - confidence... Medium
mild west southwest flow will maintain mild conditions into at
least early Tuesday. A cold front will pass Monday night though
and start to pull in some cooler air as Tuesday wears along. The
gfs collapses the 925 thermal pattern a bit more quickly during
the day than the ecmwf. It will be on the brisk side as well with
a tight gradient in the wake of the cold front. High pressure
along with a chillier airmass takes hold for Tuesday night with
high pressure nudging closer.

Wednesday - confidence... Medium
the high and cold airmass lingers into early before a developing
waa regime takes hold. The progs are showing the bulk of this lift
would be focused across northern central wi though our northern
cwa could end up being on the southern fringe. So may have to
consider some pops as we draw closer but for now blended guidance
is keeping this north of our area so will leave it dry for now.

Thursday and Friday - confidence... Medium
progs continue to show an unsettled period with surface 850 low
to our west on Thursday morning and then slowly shifting east
along a rather tight baroclinic zone. Influence of a milder
airmass out ahead of the low at least into the morning. Colder air
starts to arrive Thursday afternoon with cold advection
continuing into Friday in blustery fashion. The ECMWF and gem have
a more interesting surface low evolution and more favorable track
for decent snows than does the gfs. Pops are on the high side and
best consensus on the window for steadiest heaviest snowfall
being Thursday night. The northern and western CWA could end up
seeing a longer period of snow being in the colder airmass
longest. Potential there for several inches of accumulation cwa
wide from this system.

Marine... Easterly flow will continue across the nearshore waters
today and tonight. Waves will approach small craft advisory levels
(4 ft) at times, but right now are expected to remain just below
at 2-3 ft.

Winds will become easterly again Sunday night, with waves
decreasing in response.

Mkx watches warnings advisories
Wi... None.

Lm... None.

Update... Boxell
today tonight and aviation marine... Boxell
Sunday through Friday... Pc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MLWW3 - Milwaukee, WI 12 mi35 min NE 9.9 G 11 36°F
PWAW3 - Port Washington, WI 26 mi75 min ENE 11 G 13 35°F 1012.5 hPa
KNSW3 - Kenosha, WI 36 mi55 min W 4.1 G 7 36°F 1011.5 hPa (+1.7)

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Milwaukee-Timmerman, WI5 mi70 minN 05.00 miFog/Mist30°F26°F86%1011.2 hPa
Waukesha County Airport, WI6 mi70 minN 05.00 miFog/Mist28°F26°F93%1010.8 hPa
Milwaukee, General Mitchell International Airport, WI13 mi63 minN 010.00 miMostly Cloudy35°F28°F78%1011.8 hPa

Wind History from UES (wind in knots)
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W10W6W6SW6SW6SW6SW6S4CalmCalmCalmSE4CalmCalmCalmNE3CalmCalmNE5
1 day agoNW5W3W5W7W8W8NW8CalmSW3S3S3S3S4S4SW5SW6SW7SW8SW7W8W13W10W12W12
G20
2 days agoS8S9S6N5NW4NW8NW16
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NW9N7NW5NW7NW5NW5NW3NW5W6NW6

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 Milwaukee/Sullivan, WI (9,2,3,4)
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Ground Weather Radar Station Milwaukee, 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.