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 7:30AM||Sunset 4:30PM||Monday December 16, 2019 7:19 AM CST (13:19 UTC)||Moonrise 9:23PM||Moonset 11:13AM||Illumination 77%|
7 Day Forecast for Marine Location Near Yuba, WIHourly EDIT Help
Area Discussion for - La Crosse, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KARX 161104 AFDARX
Area Forecast Discussion National Weather Service La Crosse WI 500 AM CST Mon Dec 16 2019
SHORT TERM. (Today and tonight) Issued at 219 AM CST Mon Dec 16 2019
Early morning analysis showed some light snow and flurries associated with some mid-level frontogenesis continuing to push off to the east. Behind that, an expansive stratus deck was working into the area and will remain over the area through much of the day, as a pretty good inversion remains in place above it. Clouds will begin to push off to the southeast this afternoon and evening as a brief period of surface ridging builds in. However, more clouds will build in from the northwest overnight ahead of a shortwave trough approaching the area. For that reason, low temperatures tonight will be a little tricky. Exact timing of the return of cloud cover will have a large impact. For now, thinking most areas will stay above 0, with clouds arriving into the northwest half of the forecast area in the 6Z to 9Z time frame. However, any delay in clouds moving in would lead to temperatures quite a bit cooler than forecast, including -5 to -10 or so in the favored cold spots of central Wisconsin.
LONG TERM. (Tuesday through Sunday) Issued at 219 AM CST Mon Dec 16 2019
Another shot of cold air will begin to move in on Tuesday as the upper level shortwave trough and a surface cold front slide through the region. Looking like some pretty good PV advection along with a decent mid-level frontogenesis signal north of Interstate 94, so could see some light snow Tuesday afternoon. Model soundings do show that there will some issues with deep, consistent saturation, but plenty of GEFS members show at least some light QPF, so introduced some low-end precip chances.
Following the potential precip, northwest flow will bring in the aforementioned cold air, with lows generally bottoming out in the -10 to 5 degree range, though the favored cold spots could be even colder. Highs on Wednesday will range from the single digits above 0 north of Interstate 94, to the teens and lower 20s to the south.
Beyond that, the remainder of the long term period looks quiet with a warming trend as upper level ridging builds in. There are some hints at another shortwave trough along with an associated surface low bringing some light precip to the area sometime Friday, but with the amount of model spread at this point, confidence is pretty low on how that will pan out. Otherwise, look for widespread highs in the 30s by the weekend, with perhaps some 40s getting into northeast Iowa and southwest Wisconsin.
AVIATION. (For the 12Z TAFS through 12Z Tuesday morning) Issued at 500 AM CST Mon Dec 16 2019
Cigs: mvfr cigs moving in early this morning, associated with an approaching upper level trough. Some hints that sub 1kft could be realized at KRST, but mostly expect 1-2kft for the better part of the day. Trends favor slipping this south this evening, with SCT/SKC conditions for much of the night. Mid/low deck then returns toward 12z, with MVFR looking likely by Tue afternoon.
WX/vsby: no impacts expected at this time. That said, RAP soundings point to deepening saturation already Tue morning, with low level thermodynamics providing some weak lift. Freezing drizzle/flurries could result. Something to monitor.
Winds: shifting to the west this morning and mostly holding there through tonight . light to less than 10 kts.
ARX WATCHES/WARNINGS/ADVISORIES. WI . None. MN . None. IA . None.
SHORT TERM . CA LONG TERM . CA AVIATION . Lawrence
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|Viroqua Municipal Airport, WI||25 mi||25 min||SSW 7||10.00 mi||Overcast||17°F||16°F||97%||1021.7 hPa|
Link to 5 minute data for KY51
Wind History from Y51 (wind in knots)
|1 day ago||NW||NW|
|2 days ago||Calm||E||Calm||Calm||S||S||SE||SE||SE||SE||S||S||Calm||W||W||NW||W||NW||W||NW||NW||NW||NW||NW |
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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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for La Crosse, WI (8,2,3,4)(on/off)  Help
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