Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Sparta, 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 6:11AMSunset 8:06PM Thursday August 17, 2017 2:17 PM CDT (19:17 UTC) Moonrise 12:40AMMoonset 3:50PM Illumination 21% Phase: Waning Crescent; Moon at 25 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 Sparta, WI
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location: 43.93, -90.81     debug


Area Discussion for - La Crosse, WI
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Fxus63 karx 171844
afdarx
area forecast discussion
national weather service la crosse wi
144 pm cdt Thu aug 17 2017

Short term (tonight through Friday night)
issued at 144 pm cdt Thu aug 17 2017
goes satellite surface analysis show deep 999mb low pinwheeling
northeast across northern wi. Still a few showers patches of drizzle
rotating across the area mainly east of the mississippi river under
the low. Otherwise, widespread cloud cover in place with breezy
westerly winds of 10-20 mph gusting around 35 mph across the more
wind prone areas of northeast ia and southeast mn. Temperatures were
in the middle 60s to the lower 70s.

For tonight, the low will continue to pull northeast into southern
ontario canada with showers exiting, winds decreasing, and clearing
expected after midnight. A mid-level trough on the heels of the
departing low is expected to produce an increase in altocumulus
toward morning mainly west of the mississippi river. Plan on lows
tonight in the middle 50s to lower 60s.

Altocumulus will continue to spread across the area Friday with a
few showers and a slight chance of thunderstorms as that mid-level
trough rotates through. Otherwise, it will be slightly cooler than
normal as highs top off in the 70s.

Mid-level trough and bulk of associated shower isolated thunderstorm
chances exit the area by midnight with high pressure building in
early Saturday morning. Light winds and clearing skies toward
morning will set up the scenario for some fog development. For now
went with patchy areas of fog but will have to be watched for
perhaps more widespread development if we can clear out earlier.

Otherwise, plan on overnight lows in the 50s.

Long term (Saturday through Thursday)
issued at 144 pm cdt Thu aug 17 2017
high pressure will provide a dry Saturday with highs in the middle
and upper 70s. A cold front moves from the northern plains into far
northwest wi by late Sunday afternoon but appears any shower thunder
chances remain north of the area. Otherwise, warm air advection
ahead of this boundary will push highs into the lower and middle 80s.

Shower and thunderstorm chances overspread the area Sunday night as
that cold front sinks southward into the area. Models show this
frontal boundary hanging up across the area Monday into Tuesday as a
weak wave of low pressure runs northeast along it. This will
continue shower thunderstorm chances. This is not good news for
solar eclipse fans given cloud cover and precipitation chances. Plan
on highs Monday and Tuesday in the upper 70s lower 80s.

High pressure builds in for Wednesday into Thursday for dry and
slightly cooler than normal conditions.

Aviation (for the 18z tafs through 18z Friday afternoon)
issued at 1236 pm cdt Thu aug 17 2017
sustained northwest winds in the 15-20 kt range, with higher gusts,
and MVFR ceilings associated with a low pressure system will
continue through the afternoon. A few showers will also be possible,
mainly at klse. Ceilings should then lift toVFR levels this evening
at both locations, with cloud coverage decreasing overnight. Some
guidance hinted at fog development overnight, but current thinking
is that relatively strong winds aloft will prevent this from
happening. More clouds will then move in Friday morning, but
ceilings will remain in theVFR category. A few showers could also
approach krst near the end of the TAF period, but confidence is not
there to include any mention at this time.

Arx watches warnings advisories
Wi... None.

Mn... None.

Ia... None.

Short term... Das
long term... Das
aviation... Rogers cja


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sparta, Sparta / Fort McCoy Airport, WI4 mi43 minW 11 G 1610.00 miOvercast72°F64°F78%1003 hPa
Black River Falls Area Airport, WI22 mi43 minSW 710.00 miOvercast72°F68°F91%1002 hPa
La Crosse - La Crosse Regional Airport, WI24 mi25 minW 1510.00 miMostly Cloudy76°F64°F69%1002.4 hPa

Wind History from CMY (wind in knots)
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Last 24hrE11SE9
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E8S4E7SE9SE9
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W3SW5S6S9
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1 day agoE6E5E5E7SE3E3CalmCalmCalmCalmE3E3E3SE4CalmE4E3E3SE6E6E8SE9E13SE10
G14
2 days agoE4S6S9
G16
S7CalmCalmCalmCalmCalmCalmCalmCalmN4N9N4E5NE7CalmN3CalmCalmE7NE7SE3

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 La Crosse, WI (15,3,4,5)
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Ground Weather Radar Station La Crosse, 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.