Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.
|Sunrise 5:49AM||Sunset 8:21PM||Tuesday August 4, 2020 8:32 AM CDT (13:32 UTC)||Moonrise 8:22PM||Moonset 5:36AM||Illumination 100%|
7 Day Forecast for Marine Location Near New Lisbon, WIHourly EDIT Help
Area Discussion for - La Crosse, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KARX 041134 AFDARX
Area Forecast Discussion National Weather Service La Crosse WI 634 AM CDT Tue Aug 4 2020
SHORT TERM. (Today and tonight) Issued at 251 AM CDT Tue Aug 4 2020
Early morning analysis showed a mostly quiet, cool night across the area, as surface high pressure/ridging remained in control. Temperatures at 2 a.m. ranged from the lower 40s in the favored cold spots of central Wisconsin to the mid 40s and 50s elsewhere. A few patches of clouds were seen across northwest Wisconsin (along with a few sprinkles/light showers) and also in parts of northeast Iowa into far southwest Wisconsin. Otherwise the rest of the area remained clear, which should favor at least patchy fog development in some of the river valleys. That said, latest VAD wind profile from KARX showed some pretty decent winds aloft which may provide just enough mixing to preclude fog development. Latest RAP guidance does suggest these winds taper off, however, so keeping patchy fog mention in the Mississippi River tributaries and cranberry bog areas early this morning.
Otherwise, expect a quiet day today with highs in the upper 60s to mid 70s and some diurnal cumulus development. Model soundings do suggest some instability in the cumulus layer and a few CAMs do show some returns in their composite reflectivity fields, though thinking surface ridging and dry air in the low levels should dominate and keep the area dry.
LONG TERM. (Wednesday through Monday) Issued at 251 AM CDT Tue Aug 4 2020
The models continue to indicate a decent short wave trough will top the upper level ridge over the Rockies and drop across the region Wednesday and Wednesday night. The models also continue to show this wave will be weakening as it moves across the area as it enters the confluent flow under the upper level low spinning across Quebec. As a result, the forcing will not be all that strong with only some weak pv advection expected in the 500-300 mb layer. Not a lot of other forcing will be in place to help generate some convection. The low level moisture transport ahead of the wave will be strongest across Minnesota Wednesday afternoon and the weaken quickly Wednesday night. The frontogenesis looks very similar with a weak band in the 1000-700 mb layer over Minnesota that fizzles out Wednesday night as it moves into the persistent and strong low level ridging in place over the eastern Great Lakes into the Ohio River Valley. As a result, the best coverage of showers and storms should be over Minnesota, west of the local area, Wednesday afternoon with the possibility of some of this activity surviving about as far east as the Mississippi River Wednesday night before weakening rapidly. Another weak short wave trough may zip across the area Thursday and Thursday night to maintain a small chance for some rain.
Over the weekend, the models are now trending toward flattening out the upper level ridge over the Rockies and allowing a quasi- zonal flow to develop over the Upper Midwest. This has the potential to allow some short wave troughs to move across the area along with some showers and storms. Right now, none of these waves look to be very strong and since this is a relatively new trend in the models, will keep the rain chances generally under 40 percent.
Temperatures will be slowly climbing for the rest of the week, but primarily staying the 70s for highs through Thursday. It still looks warmer and more humid for the weekend with highs 80s and dew points returning to around 70 by Sunday afternoon.
AVIATION. (For the 12Z TAFS through 12Z Wednesday morning) Issued at 634 AM CDT Tue Aug 4 2020
VFR conditions expected to prevail through the TAF period with some cumulus development by mid-day today and northwest winds generally under 10 kts. Could see a brief period of MVFR visibility at LSE for the beginning of the TAF period as fog is "trying" to develop in the main channel of the Mississippi River, but mainly expect it to remain as scattered low stratus. Expect a shift to more southerly to southwesterly winds tonight, but speeds will remain quite light. May see some fog development in tributary rivers early Wednesday morning. Lingering clouds and breezy winds aloft should preclude development in the main channel of the Mississippi River, but will need to keep an eye on trends.
ARX WATCHES/WARNINGS/ADVISORIES. WI . None. MN . None. IA . None.
SHORT TERM . CA LONG TERM . 04 AVIATION . CA
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|Volk / Camp Douglas, WI||11 mi||36 min||N 0||10.00 mi||Partly Cloudy||55°F||55°F||100%||1021.7 hPa|
Link to 5 minute data for KVOK
Wind History from VOK (wind in knots)
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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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Wind Forecast for La Crosse, WI (9,2,3,4)(on/off)  Help
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