Monday, June25, 2018 L-36.com


Marine Weather and Tides
Boscobel, WI

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:25AMSunset 8:45PM Monday June 25, 2018 2:39 AM CDT (07:39 UTC) Moonrise 5:32PMMoonset 2:50AM Illumination 90% Phase: Waxing Gibbous; Moon at 12 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 Boscobel, WI
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location: 43.14, -90.7     debug


Area Discussion for - La Crosse, WI
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Fxus63 karx 250438
afdarx
area forecast discussion
national weather service la crosse wi
1138 pm cdt Sun jun 24 2018

Short term (this evening through Monday)
issued at 248 pm cdt Sun jun 24 2018
an upper level disturbance moving across the region this
afternoon into this evening will bring a continued chance
of thunderstorms. 700mb winds were only around 10 knots,
thus any storms will be slow moving. The stronger storms
will be capable of producing wind gust up to around 40 mph
and brief heavy rain. The showers and storms will linger into
evening, especially north of interstate 90. Overnight,
patchy valley fog is expected again, especially in the
wisconsin river valley.

On Monday, the latest model trends are indicating a slower arrival
of the rain. Will delay the onset of the chances of rain by at least
a few, if not several hours. The latest GFS wrf models would suggest
the rain would not arrive until after 00z Tuesday. The canadian model
was quicker, thus want to see the 12z ECMWF before making final
adjustment to the pops grids. Due to the slower arrival of the rain,
will raise MAX temperatures a few degrees.

Long term (Monday night through Sunday)
issued at 248 pm cdt Sun jun 24 2018
upper level closed low trough slowly moves into the great lakes
region Monday night into Tuesday night. The 24.12z GFS nam ecmwf
show increasing low level jet moisture transport convergence into the
forecast area Monday evening night. With decent vertical
motion forcing increasing over forecast area... Showers and
thunderstorms will overspread much of the forecast area. The
deterministic models show 1.5 to 1.7 inches of precipitable water
values over forecast area. Slower movement of thunderstorms will
have the potential for heavy rainfall. Severe threat looks to be
across the far southern forecast area... Where 0-3km shear is 20-25
knots and elevated instability in the 0-6km layer of around 1200
j kg.

Next concern is the severe thunderstorm potential for Tuesday... The
24.12z GFS nam suggest increasing instability along and ahead of
surface front Tuesday afternoon evening across the southern
forecast area(northeast ia southwest wi). However... With
convective cloud debris potentially over forecast area from Monday
night and ongoing storms... This may reduce the instability over
the area. The 24.12z GFS nam indicate 0-3km shear of 20 to 30
knots over southern parts of the forecast area Tuesday
afternoon evening. With moisture convergence and vertical motion
along surface cold front... Expect showers thunderstorms to
redevelop along front and potentially become severe across parts
of northeast iowa and southwest wisconsin Tuesday
afternoon evening.

Surface ridge builds into southern minnesota central iowa Wednesday
and provide dry weather across the forecast area.

Main forecast concerns Wednesday night through Sunday are
precipitation chances Thursday night into the weekend and potential
for hot conditions Thursday into the weekend. The 24.12z
gfs ECMWF gem are in decent agreement in digging upper level
trough over the pacific northwest and amplifying upper level ridge
over the central eastern united states Thursday into next
weekend. Main difference between the deterministic models is the
strength of the upper level trough ridge... As GFS is stronger than
the ECMWF gem with the trough ridge. This will have impacts on
timing and chances of showers thunderstorms... And the potential
for hot conditions... Thursday night into the weekend. Confidence
in forecast precipitation chances Thursday night into next weekend
is low... Based on the differences of strength of upper level
trough ridge. The gfs ECMWF are showing 925mb temperatures
climbing to around plus 25 degrees celsius Thursday into the
weekend. High temperatures will climb into the upper 80s to lower
90s across the forecast area during this period. Depending on
strength of upper level ridge there is potential temperatures
could climb into the lower to middle 90s.

Aviation (for the 06z tafs through 06z Monday night)
issued at 1138 pm cdt Sun jun 24 2018
expectingVFR conditions to continue through the period with the
rain threat staying just to the west of the area. The low level
moisture transport ahead of the upper level low over the nebraska
panhandle has caused showers and storms to remain just to the west
of the area this evening. These should slowly dissipate through
the night as the moisture transport starts to weaken. As the low
moves into eastern nebraska Monday, a short wave trough will
rotate around it and move north across western iowa into southern
minnesota. This could possibly push a few showers and storms into
the western sections of the area as the moisture transport starts
to increase during the evening. However, the 25.00z NAM and the
latest hi-res meso models keep the area dry through the evening.

This has been a consistent trend in these models through the
evening and have trended the forecasts that way as well.

Hydrology
Issued at 248 pm cdt Sun jun 24 2018
minor flooding continues along the mississippi river through this
week. See the latest flood statements for current river forecasts.

The potential for flooding continues into early this week... As
another slow moving storm system spread showers and storms into
the forecast area Monday night into Tuesday night. Precipitable
water values of 1.5-2 inches will allow for the potential of heavy
rainfall from the thunderstorms. With the moist soils from recent
rains... River rises are expected and the possibility of flooding.

Arx watches warnings advisories
Wi... None.

Mn... None.

Ia... None.

Short term... Dtj
long term... Dtj
aviation... 04
hydrology... Dtj


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boscobel, Boscobel Airport, WI2 mi47 minENE 410.00 miA Few Clouds69°F59°F70%1018.6 hPa
Prairie Du Chien Municipal Airport, WI24 mi65 minESE 710.00 miFair70°F58°F67%1017.9 hPa

Wind History from OVS (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalm--CalmN3NW33Calm--CalmSE63SE3SE3CalmCalm4SE5NE3NE4
1 day agoSW3CalmCalmCalmCalmN5CalmCalmW46NW6N4W4W4SW4SW4SE3CalmCalmSW3CalmCalmS3S3
2 days agoNE4CalmNE3CalmCalmCalmNE44NE8645NE7NE5N55NE3CalmCalmCalmCalmCalmCalmSW4

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 Midwest    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for La Crosse, WI (3,6,7,8)
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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.