Saturday, December7, 2019
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Marine Weather and Tides
Necedah, WI

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:19AMSunset 4:21PM Saturday December 7, 2019 3:13 PM CST (21:13 UTC) Moonrise 2:15PMMoonset 2:20AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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 Necedah, WI
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location: 43.93, -90.06     debug


Area Discussion for - La Crosse, WI
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FXUS63 KARX 072057 AFDARX

Area Forecast Discussion National Weather Service La Crosse WI 257 PM CST Sat Dec 7 2019

SHORT TERM. (This evening through Sunday) Issued at 257 PM CST Sat Dec 7 2019

Latest 20z surface analysis shows high pressure over the Ohio River Valley. With southerly winds on the backside of the high pressure over forecast area. Temperatures have warmed into the upper 20s to upper 30s.

Quiet weather tonight into Sunday. Southerly winds aloft on the backside of the surface/upper level ridge will advect warmer airmass into the forecast area. Temperatures tonight will fall into upper 20s to middle 30s. High temperatures are expected to climb into the middle 30s to middle 40s.

LONG TERM. (Sunday night through Saturday) Issued at 257 PM CST Sat Dec 7 2019

Focus turns to Sunday night into Monday. Biggest changes in the forecast is the latest ensembles/deterministic models trended the frontogenesis east to west band of snow slightly further north and delaying the change over to all snow Sunday night per previous runs. Have reduced the snow amounts slightly across north central Wisconsin with up to 4 inches across Taylor/northern Clark Counties. The latest 07.12z GFS/NAM bufkit soundings show atmosphere column over forecast area saturates after 09z Monday. This will delay the heavier precipitation (mainly snow) to fall over the forecast area and have introduced the increasing of precipitation chances 09-12z Monday. Before the atmosphere column saturates . bufkit soundings indicate low level saturation with weak vertical motion after 03z Monday. With no ice introduction . the possibility of freezing drizzle exist. If any freezing drizzle does fall . ice accumulation will be a few hundredths of an inch or less.

Main forecast concerns Tuesday into Saturday is cold temperatures Tuesday night through Thursday. The 07.12z GFS/ECMWF/GEM continue to be consistent in advecting cold arctic airmass into the Upper Midwest/Northern Plains Tuesday night into Thursday. The 07.12z deterministic models suggest 925mb temperatures between by 12z Wednesday and the 07.00z NAEFS standardized anomalies 850mb temperatures are between -2 to -3 across the forecast area Tuesday night into Thursday morning. Temperatures Tuesday night into Thursday morning are expected to fall into the teens below zero to single digits above and highs rising into the single digits below zero to around 10 above. Surface/weak upper level ridge builds east of forecast area and southerly winds on backside of ridge will filter in warmer air aloft. Temperatures will warm back into the 20s to 30s late in the week. Weak shortwave trough tracking along and north of surface warm front will provide periodic small chances of snow across much of the forecast area late Thursday into Saturday.

AVIATION. (For the 18Z TAFS through 18Z Sunday afternoon) Issued at 1147 AM CST Sat Dec 7 2019

Confidence is high that VFR conditions through the late night will occur during this TAF issuance at the airfields. A very strong low-level jet will develop overhead late this afternoon and continue overnight, causing a moderate-high low-level wind shear situation.

Sunday morning, a cold front will move through the airfields with an MVFR cloud deck moving in shortly behind. Confidence is lower on the timing of this cloud deck at KRST and there is a chance that it could be IFR. The timing could be as early as 12Z and as late as 18Z. The onset of the lower cloud will be later at KLSE and MVFR CIGS should occur after 18Z - slightly higher confidence that CIGS will remain in the MVFR range.

Planning: A period of snow is expected Monday and IFR VSBYS are possible with some light accumulation.

ARX WATCHES/WARNINGS/ADVISORIES. WI . None. MN . None. IA . None.

SHORT TERM . DTJ LONG TERM . DTJ AVIATION . Baumgardt


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Volk / Camp Douglas, WI11 mi77 minS 1110.00 miMostly Cloudy39°F24°F56%1020.7 hPa

Link to 5 minute data for KVOK

Wind History from VOK (wind in knots)
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Last 24hrW5W5W4CalmW3CalmCalmSE3S4CalmCalmSE3E3S5S4CalmSE3S5S6S9S8S9S11S7
1 day agoS4CalmCalmCalmCalmW4W7NW12NW15
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2 days agoW9W8W6W7W8W8W3CalmCalmCalmCalmCalmW4CalmCalmSE3CalmCalmSE5S6S6S7S9S3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS 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 La Crosse, WI (16,3,4,5)
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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.