Sunday, November19, 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 7:04AMSunset 4:36PM Sunday November 19, 2017 3:44 PM CST (21:44 UTC) Moonrise 7:53AMMoonset 5:47PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near Sparta, WI
   Hourly   EDIT   Help
location: 43.93, -90.81     debug


Area Discussion for - La Crosse, WI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 karx 192004
afdarx
area forecast discussion
national weather service la crosse wi
200 pm cst Sun nov 19 2017

Short term (tonight through )
issued at 200 pm cst Sun nov 19 2017
mild Monday, then a colder raw windy day Tuesday.

Low level warming, an increasing southerly fetch and ample sunshine
will result in a mild start to the new work week. Highs in the upper
40s to around 50 are expected for most - 5 to 10 degrees above
normal.

Models all in good agreement with driving an upper level shortwave
trough southeast across the region Monday night Tuesday, with an
associated cold front slipping across the local area Monday night.

Some QG convergence with the shortwave, mostly upper mid level and
across northern parts of mn wi. Models all favoring keeping any pcpn
threat (at least in terms of measurable qpf) well north, where the
deeper saturation is expected along with the stronger forcing. That
said, low level lapse rates are quiet high thanks to a strong slug
of cold 850 mb air (temps fall from +6 c 18z Mon to -12 c 18z tue).

Bufkit soundings even suggest a little weak instability. Increasing
rh in the 900-800 mb layer on tue, post the front, might be enough
for some instability CU - potential showers flurries? Not sold on the
threat enough to add to forecast, but its something to watch.

While the good lapse rates won't necessarily result in snow showers,
they will help with mixing down stronger low level winds. This is in
addition to a tightening sfc pressure gradient late Mon night
through Tue as the sfc low passes to the north. Its going to be a
windy, raw day. Gusts in the low mid 30s seem likely at this time,
especially in the open unsheltered areas.

Long term (Wednesday through Sunday)
issued at 200 pm cst Sun nov 19 2017
fairly progressive upper level flow with shortwave ridge troughs
transitioning quickly west to east across the conus. Question
locally isn't so much about pcpn chances but the impact on
temperatures. After the cool down of tue, upper level sfc ridging
already working back in for thanksgiving and black Friday - warming
back to around +12 c by 18z fri. There has been a little back and
forth in the models with how warm it could would get - but trends
siding for mild conditions for the start of the holiday weekend.

Highs in the 50s for Friday look likely at this time. Colder air
returns for Sat Sun as an upper level trough drops across the great
lakes.

The Friday night trough is set to spin across northern parts of the
region, dragging a cold front along with it. 150 kt 300 mb jet will
push it along, aiding in lift as it does. The ec is a little farther
south and faster with this system in the 12z run, favoring a shot
for pcpn from around i-90 northward. While previous GFS runs have
trended a bit drier, its 12z run is more inline with the ec - at
least in terms of bringing pcpn chances southward. The bulk of the
qpf in both models is north. Going to let consensus detail chances
for now.

Aviation (for the 18z tafs through 18z Monday afternoon)
issued at 1135 am cst Sun nov 19 2017
vfr conditions are likely through the TAF period. There may be a few
patches of high cirrus streaming across the area at times, but
otherwise expect westerly winds around 10 kts to gradually shift
southwest to south this evening through Monday.

Arx watches warnings advisories
Wi... None.

Mn... None.

Ia... None.

Short term... Rieck
long term... .Rieck
aviation... Jm


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sparta, Sparta / Fort McCoy Airport, WI4 mi50 minWSW 510.00 miMostly Cloudy32°F15°F51%1015.9 hPa
Black River Falls Area Airport, WI22 mi50 minWSW 810.00 miOvercast33°F12°F43%1015.2 hPa
La Crosse - La Crosse Regional Airport, WI24 mi52 minSSW 610.00 miFair38°F16°F41%1016.8 hPa

Wind History from CMY (wind in knots)
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
Last 24hrNW11
G17
NW11
G17
NW14
G20
NW6
G17
NW14
G19
NW10
G15
NW11
G17
NW12
G16
NW8NW13
G18
W9
G14
NW9
G16
NW14
G21
NW8W5W3W7W11
G15
W6W9SW6W7W4Calm
1 day agoCalmCalmCalmCalmCalmCalmCalmNE4CalmN5W3N6N7N12
G17
N8N8N6NW10
G16
N8NW11
G16
NW7NW9NW11
G18
NW12
G18
2 days agoS4SE4CalmE6S7SE6SE8SE6SE9S8S8SE5SE7SE6SE7SE10
G19
S11SE9S7S8S13
G20
S10SE7S5

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for La Crosse, WI (16,3,4,5)
      (on/off)   Help

Ground Weather Radar Station La Crosse, WI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.