Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
La Valle, 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 6:46AMSunset 5:36PM Wednesday February 20, 2019 10:00 AM CST (16:00 UTC) Moonrise 7:07PMMoonset 7:45AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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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7 Day Forecast for Marine Location Near La Valle, WI
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location: 43.58, -90.06     debug


Area Discussion for - Milwaukee/Sullivan, WI
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Fxus63 kmkx 201129 aaa
afdmkx
area forecast discussion... Updated
national weather service milwaukee sullivan wi
529 am cst Wed feb 20 2019

Update
Snow has spread into the entire forecast area early this morning
and will persist through the early morning hours. This will result
in snow covered roads most places for the morning commute. A
transition to wintry mix is still expected mid morning into the
afternoon.

Aviation(12z tafs)
Ceilings and visibilites will continue to go down this morning as
snow moves in from the southwest. A quick 1 to 3 inches is
expected across much of the area by mid-morning. A wintry mix is
then expected mid-morning into the afternoon. Places northwest of
madison may remain snow for a large part of the time. Sleet and
freezing rain will be possible most places, with ice accumulations
up to 0.15 inches, especially from madison southeastward. Precip
will come to and end southwest to northeast late afternoon to
early evening. Snow totals will range from 1 to 2 inches east... To
3 to 5 inches west.

Lower ceilings will hang on into tonight... With decreasing clouds
on Thursday.

Prev discussion (issued 513 am cst Wed feb 20 2019)
short term...

today and tonight... Forecast confidence is medium to high:
snow continues to move in from the southwest this morning. This
snow will impact the morning commute across southern wisconsin,
with 1 to 3 inches on the ground by the time of the commute. The
highest amounts will be southwest of madison.

Precip will then transition to a wintry mix mid-morning into the
afternoon as ice crystal development will likely be lost for a
time. Some question as to sleet vs freezing rain, especially this
afternoon when it looks more showery. The temp profile will be
completely below freezing, so just a matter of how deep saturation
will be and how much overall cold air through the lower levels for
sleet development. Forecast ice totals of up to 0.15 inches are
based on expecting mainly freezing rain, so these totals would be
less if there ends up being more sleet. Locations west northwest
of madison may remain snow for much of the time, so highest snow
totals remain in these locations.

Could see some blowing snow this morning before mixed precip sets
in.

May see precip turn to just rain for a time in the southeast this
afternoon if surface temps get above freezing as expected.

Precip will wind down quickly from SW to NE later this afternoon
to early evening. Kept the winter weather advisory times as is for
now.

Thursday through Friday... Forecast confidence high.

Brisk wly winds will gradually lessen on Thu as high pressure
approaches. The high will settle over SRN wi for Thu nt with single
digit temps inland. The high will then move to the mid atlantic
states on Fri with an esely flow developing over SRN wi. High temps
will be near seasonal normals for thu-fri.

Long term... Friday night through Tuesday... Forecast confidence
medium.

An inverted sfc trough will approach from the great plains Fri nt
with fairly strong 850 mb warm advection ahead of it. 850 mb temps
will warm to 2-6c across the area. Snow and freezing rain is likely
with initially snow over the NRN half of the area while the pcpn
will start as freezing rain from msn to mke and south. A winter wx
advisory will likely be needed for expected ice accums.

On sat, a strong shortwave trough will induce rapid deepening of a
sfc low from ok to SE ia. The occluded low, approximately 985 mb,
will then track across SE wi late Sat nt. Temps will warm above
freezing quickly Sat am with mostly rain expected through Sat eve.

The rain will then change to light snow as cold advection cools the
column below freezing. 1-3 inches forecast toward central wi if this
track holds. Windy and cooler conditions will prevail on Sun with
most of the snow ending by afternoon.

Polar high pressure will then return for Monday with below normal
temps forecast. The high will shift east for Tue as a weak low
pressure area affects the region. Light snow will become likely late
mon nt-tue.

Aviation(06z tafs)...

ceilings and visibilites will continue to go down this morning as
snow moves in from the southwest. A quick 1 to 3 inches is
expected across much of the area by mid-morning. A wintry mix is
then expected mid-morning into the afternoon. Places northwest of
madison may remain snow for a large part of the time. Sleet and
freezing rain will be possible most places, with ice accumulations
up to 0.15 inches, especially from madison southeastward. Precip
will come to and end southwest to northeast late afternoon to
early evening. Snow totals will range from 1 to 2 inches east... To
3 to 5 inches west.

Lower ceiling will hang on into tonight... With decreasing clouds
on Thursday.

Marine...

low pressure will lift northeast into wisconsin today and then
across northern lake michigan and into canada tonight. Gusty east
to southeast winds are expected today ahead of the low, with
gusty southwest to west winds tonight into Thursday. Gusts will
likely reach gale force in the south half of the lake today, with
a few gale gusts possible across the lake later this evening into
tonight.

Issued a gale warning for the south half for this morning into
the afternoon. Kept the small craft advisory going for the
nearshore waters into Thursday morning.

Lighter winds are expected later Thursday into Friday, with
strong winds likely to return by late in the weekend.

Mkx watches warnings advisories
Wi... Winter weather advisory until 6 pm cst this evening for wiz056-
062>065-067>070.

Winter weather advisory until 3 pm cst this afternoon for wiz066-
071-072.

Winter weather advisory until 6 pm cst this evening for wiz046-
047-051-052-057>060.

Lm... Gale warning until 3 pm cst this afternoon for lmz080-669-671-
673-675-777-779-870-872-874-876-878.

Small craft advisory until 9 am cst Thursday for lmz643>646.

Update... Ddv
today tonight and aviation marine... Ddv
Thursday through Tuesday... Gehring


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baraboo Wisconsin Dells Airport, WI16 mi66 minE 14 G 184.00 miLight Snow27°F24°F92%1010.8 hPa

Wind History from DLL (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmS4S8SE4SE4CalmCalmE4E8E7E5E7NE6E6E6E11E13
G18
E15
G20
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G19
1 day agoCalmCalmCalmCalmSW5W3W7CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoNE10NE11
G15
NE13
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NE12
G19
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G20
NE11
G18
NE8NE7NE7NE6
G16
N4N5N5N5N4N5N5N3N4N5NW3CalmN3N3

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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GOES Local Image of    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 Milwaukee/Sullivan, WI (11,2,3,4)
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Ground Weather Radar Station La Crosse, 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.