Wednesday, October18, 2017 L-36.com


Marine Weather and Tides
Madison, 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 7:14AMSunset 6:10PM Wednesday October 18, 2017 11:51 AM CDT (16:51 UTC) Moonrise 5:51AMMoonset 6:02PM 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- 1105 Am Cdt Wed Oct 18 2017
.small craft advisory in effect through late tonight...
Rest of today..South wind 15 to 20 knots. Gusts up to 25 knots. Sunny. Waves 3 to 4 feet.
Tonight..Southwest wind 15 to 20 knots veering west 10 to 20 knots after midnight, then becoming 10 to 15 knots early in the morning. Mostly clear. Waves 3 to 4 feet subsiding to 1 to 2 feet early in the morning.
Thursday..West wind 5 to 10 knots backing south late in the afternoon. Sunny. Waves around 1 foot.
Thursday night..South wind 5 to 10 knots veering southwest late in the evening, then becoming southwest 5 to 10 knots after midnight backing south early in the morning. Clear. Waves around 1 foot.
LMZ644 Expires:201710182200;;047349 FZUS53 KMKX 181605 NSHMKX Nearshore Marine Forecast National Weather Service MILWAUKEE/SULLIVAN WI 1105 AM CDT Wed Oct 18 2017 For waters within five nautical miles of shore on Lake Michigan LMZ644-182200-

7 Day Forecast for Marine Location Near Madison, WI
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location: 43.09, -89.43     debug


Area Discussion for - Milwaukee/Sullivan, WI
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Fxus63 kmkx 181434
afdmkx
area forecast discussion
national weather service milwaukee sullivan wi
934 am cdt Wed oct 18 2017

Update Ongoing forecast is on track. No need for changes at
this time.

Pc

Marine South to southwest winds picking up. Gusts in the 15 to
20 knot range. Expect winds to increase further with subsequent
buildup in wave action. Highest waves towards open waters and
towards sheboygan.

Pc

Prev discussion (issued 615 am cdt Wed oct 18 2017)
update... Forecast is on track for today and tonight. Breezy and
mild.

Aviation(12z tafs)... A swly 45-50 kt LLJ will develop early this
evening and exit SRN wi from 05z to 07z late tnt. Thus llws is
likely once again. Otherwise, winds will gust around 25 kts from
late this morning through the afternoon. Mostly clear to partly
cloudy skies will continue withVFR conditions, although fog may
form early Thu am in the wi river valley.

Prev discussion... (issued 330 am cdt Wed oct 18 2017)
short term...

today and tonight... Forecast confidence is high...

a shortwave trough will track across SRN wi and NRN il from late
this morning through the afternoon. Too dry for clouds or precip.

But it will contribute to the pressure falls and gusty winds
through the day. The breezy sswly winds will maintain a mild
airmass over the region with the low level thermal ridge settling
over the area this afternoon into the early evening. Went with
high temps similar or slightly warmer than yesterday. A dry and
weak cold front will then pass tonight with perhaps scattered
clouds with its passage. The winds will become light late tonight
as a ridge of high pressure approaches from the west. Areas of fog
are possible in the wi river valley.

Long term...

Thursday and Friday... Forecast confidence is high:
high pressure will bring continued pleasant weather to southern
wisconsin to end the work week, with mostly sunny skies and above
normal temperatures expected. Bumped temps up Friday a fair
amount above most models, as model surface temps aren't reflective
of the very mild airmass aloft.

Saturday and Sunday... Forecast confidence is medium to high:
low pressure and an associated cold front will approach the area
on Saturday, with models in fair agreement in the trough front
passage Saturday night. Pretty good surge of moisture ahead of
this system, with model precipitable water values rising to around
1.50 inches. Decent forcing with this system too, so feel good
with likely precip chances for now. Best chance for showers and a
few storms will be Sat evening into Sunday morning.

Saturday looks mainly dry during the day, so mild temperatures are
likely. May not have gone warm enough if the Sun is out for a
while given the 925 mb temps. Temps will be cooler on Sunday
behind the departing system.

Monday and Tuesday... Forecast confidence is medium:
models show a potent broad trough pushing through the area early
next week. Decent confidence that there will be showers at times
as impulses rotate through the trough, but not great agreement in
models with the timing and placement of these waves. Thus just
have some low end precip chances Mon and tue.

Temps will be near to a little above normal Monday ahead of the
main trough, with below normal temps likely Tue on the back side
of the system.

Aviation(09z tafs)... Areas of llws is possible through 12z this
morning via a swly 35 kt llj. A swly 45-50 kt LLJ will then
develop early this evening and exit SRN wi from 05z to 08z late
tnt. Thus llws is likely once again. Otherwise, winds will gust
around 25 kts from late this morning through the afternoon. Mostly
clear to partly cloudy skies will continue withVFR conditions,
although fog may form early Thu am in the wi river valley.

Marine... A small craft advisory is in effect today and tonight
for breezy sswly winds and increasing wave heights. Waves of 3-6
feet is forecast north of port washington with 2-4 feet from port
washington to winthrop harbor il.

Mkx watches warnings advisories
Wi... None.

Lm... Small craft advisory until 4 am cdt Thursday for lmz643>646.

Today tonight and aviation marine... Gehring
Thursday through Tuesday... Ddv


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MLWW3 - Milwaukee, WI 82 mi42 min SSW 16 G 19 63°F
PWAW3 - Port Washington, WI 85 mi72 min S 8 G 13 61°F 1017.9 hPa
KNSW3 - Kenosha, WI 93 mi52 min SSW 9.9 G 18 63°F 1019 hPa (-1.0)

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Middleton Muni - Morey Field, WI6 mi77 minSSW 910.00 miFair61°F45°F57%1016.9 hPa
Madison, Dane County Regional-Truax Field, WI6 mi59 minS 1210.00 miFair60°F45°F58%1016.5 hPa

Wind History from C29 (wind in knots)
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Last 24hrW9
G15
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SW9SW8
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S7SW8SW5SW7SW6SW4CalmSW8S8S8S8S8S9S7S8S13S11
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1 day agoW8SW5W10W10
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2 days agoNW16
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NW11NW12
G19
W6SW3CalmCalmCalmCalmW4W4CalmCalmCalmCalmCalmCalmCalmW5W3Calm

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 Midwest    EDIT
Geos

Wind Forecast for Milwaukee/Sullivan, WI (12,3,4,5)
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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.