Marine Weather and Tides
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 7:19AM||Sunset 4:21PM||Saturday December 7, 2019 3:13 PM CST (21:13 UTC)||Moonrise 2:15PM||Moonset 2:20AM||Illumination 83%|
7 Day Forecast for Marine Location Near Necedah, WIHourly EDIT Help
Area Discussion for - La Crosse, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
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 StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
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|Volk / Camp Douglas, WI||11 mi||77 min||S 11||10.00 mi||Mostly Cloudy||39°F||24°F||56%||1020.7 hPa|
Link to 5 minute data for KVOK
Wind History from VOK (wind in knots)
|1 day ago||S||Calm||Calm||Calm||Calm||W||W||NW||NW|
|2 days ago||W||W||W||W||W||W||W||Calm||Calm||Calm||Calm||Calm||W||Calm||Calm||SE||Calm||Calm||SE||S||S||S||S||S |
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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)(on/off)  Help
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