Monday, May27, 2019

Marine Weather and Tides
Yuba, WI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:27AMSunset 8:37PM Monday May 27, 2019 6:54 AM CDT (11:54 UTC) Moonrise 1:28AMMoonset 12:29PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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 Yuba, WI
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location: 43.58, -90.42     debug

Area Discussion for - La Crosse, WI
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Fxus63 karx 271040
area forecast discussion
national weather service la crosse wi
540 am cdt Mon may 27 2019

Short term (today and tonight)
issued at 248 am cdt Mon may 27 2019
impactful weather concerns for today are on periods of rain,
possibly heavy with a potential flooding threat, and a small window
for a possible damaging wind and an isolated tornado, but highly

Heavy rain concerns today:
waves of showers and embedded thunderstorms are expected across the
area today as a shortwave moves through and moderate 850 mb
moisture transport focuses into the area. Precipitable water
values climb into the 1.3 to 1.5 inch range with warm cloud depth
increasing to 3.5 km by this afternoon. This environment will
favor efficient rain producing showers and thunderstorms and if
storms repeat over areas, there could be a flooding threat. At
this time models suggest that 1 to 3 inches of rain could fall
across the area by this evening. Latest indications are that the
heaviest rain will fall across southeast minnesota and portions of
northeast iowa into southwest wisconsin. Be ALERT if you live
near or have interests along area rivers and be ready for rising
water levels. The highest confidence for heavy rain is across
southern minnesota where several forecast models suggest a swath
of 1 to 3 inches of rainfall by late this evening.

Small window for other severe weather threats today:
surface low pressure lifts into the area today and forecast models
suggest MUCAPE values could climb to 1500 to 2500 j kg in the warm
sector of the low. The problem negative for surface based
thunderstorms this afternoon, is widespread cloud cover and
ongoing showers storms, limiting how much CAPE can build. There
appears to be a 2-3 hour window across northeast iowa and
southwest wisconsin where surface based storms could form along
the cold front. A few mesoscale models are generating convection
after 2 pm along the front over northeast iowa and southwest
wisconsin. If these storms were to be surface based there would be
25 to 30 kts of 0-1 km bulk shear, with nearly 55 kts of 0-3 km
shear, available. This would favor an environment favorable for an
isolated tornado or two and maybe damaging winds if the storms go
into a linear mode. Can't rule out a supercell or two either
earlier in the afternoon when there is deeper shear in place. The
small warm sector then quickly pushes east and out of the area by
03z ending the severe weather threat. So the overall severe
weather threat today is highly conditional on storms developing
this afternoon in the warm sector and this will depending on if
any clearing occurs to warm surface temperatures into the lower
70s, which looks to be unlikely.

Long term (Tuesday through Sunday)
issued at 248 am cdt Mon may 27 2019
big changes to the forecast for Tuesday, which now looks to be a
quiet day over the area, but there could be a heavy rain threat
in far southern portions of the forecast area Tuesday night.

The frontal boundary sags south on Tuesday pushing the moist and
unstable air way to the south. The warm front now looks to reside
over southern iowa into central illinois when it looked like it
could be over the forecast area yesterday, so this is a major
change. A shortwave moving through, north of the front, could
bring some showers and embedded storms to the area with the
potential for heavy rain over portions of northeast iowa and far
southwest wisconsin. An upper level trough edges into the region
on Wednesday and the warm front may edge northward into northeast
iowa and far southwest wisconsin. Showers and storms are possible
over the area but with the bulk of the CAPE looking to stay south
of the area, not anticipating severe storms at this time. Shower
and thunderstorm chances linger over the area into Thursday as the
upper trough meanders south. Northwest flow aloft then sets up
across the region for the end of the week with a few shortwaves
moving through producing periodic chances for showers and possibly

Aviation (for the 12z tafs through 12z Tuesday morning)
issued at 540 am cdt Mon may 27 2019
vfr conditions early this morning will deteriorate to MVFR by mid to
late morning. This as moisture and lift increase across the area and
-shra with sct tsra spread across the area. Perhaps a break from
the tsra during the early afternoon hours, but another round of
stronger convection with more tsra looks to spread across the taf
sites during the late afternoon into early evening hours. Some -shra
to continue into mid evening. This evening trends dry after 03z, but
abundant lower level moisture and mainly ifr CIGS to remain
across the area thru the overnight hours into Tue morning. E-se
winds around 10kts early this morning to increase to 12-17kts for
the late morning afternoon hours and g22-26kts at sites like krst.

Winds to swing north at 6-13kts for tonight into Tue morning.

Hydrology Today into tonight
issued at 248 am cdt Mon may 27 2019
periods of showers and thunderstorms today will lead to 1 to 2
inches of rainfall across the area with localized 3 inch amounts
possible. At this time the heaviest rain looks to fall over
portions of southeast minnesota where 2 to locally 3 inches of
rain is possible. The rain looks to be progressive over this area
so haven't issued a flood watch yet and will continue esf. If
confidence increases a flood watch may be needed later this

Arx watches warnings advisories
Wi... None.

Mn... None.

Ia... None.

Short term... Wetenkamp
long term... .Wetenkamp
aviation... ..Rrs
hydrology... .Wetenkamp

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Viroqua Municipal Airport, WI25 mi60 minESE 910.00 miPartly Cloudy57°F52°F83%1015.6 hPa

Wind History from Y51 (wind in knots)
Last 24hrCalmN4CalmN4E3N3NE3N4N5W3CalmCalmSE3CalmCalmCalmCalmE4SE7SE8SE9SE7E9E13
1 day agoW11SW7W10
2 days agoE10SE11SE10

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for La Crosse, WI (7,2,3,4)
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Ground Weather Radar Station La Crosse, WI
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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 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 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.