Thursday, December13, 2018 L-36.com


Marine Weather and Tides
Superior, 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 7:43AMSunset 4:22PM Thursday December 13, 2018 12:20 AM CST (06:20 UTC) Moonrise 12:01PMMoonset 10:27PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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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LSZ145 348 Pm Cdt Wed Oct 3 2018
.a Thunderstorm over western lake superior... The areas affected include... Duluth mn to port wing wi... Lake superior west of a line from saxon harbor wi to grand portage mn beyond 5nm... Port wing to sand island wi... Silver bay harbor to two harbors mn... Two harbors to duluth mn... At 348 pm cdt, doppler radar indicated a Thunderstorm, capable of producing winds to around 30 knots and frequent cloud to water lightning. This Thunderstorm was located near duluth lift bridge channel, moving east at 65 knots. Locations impacted include... French river, herbster, and barkers island. Precautionary/preparedness actions... Mariners can expect gusty winds to around 33 knots...locally higher waves...lightning strikes...and heavy downpours. Boaters should seek safe harbor immediately until this storm passes. && a tornado watch remains in effect until 1100 pm cdt for northwestern wisconsin...and the adjacent waters of lake superior. Lat...lon 4691 9192 4710 9132 4683 9115 4682 9119 4683 9121 4681 9127 4671 9205 4681 9210
LSZ145 Expires:201810032115;;190874 FZUS73 KDLH 032048 MWSDLH Marine Weather Statement National Weather Service Duluth MN 348 PM CDT WED OCT 3 2018 LSZ143>146-162-032115-


7 Day Forecast for Marine Location Near Superior, WI
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location: 46.71, -92.01     debug


Area Discussion for - Duluth, MN
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Fxus63 kdlh 130551
afddlh
area forecast discussion
national weather service duluth mn
1151 pm cst Wed dec 12 2018

Short term (this evening through Thursday)
issued at 332 pm cst Wed dec 12 2018
low pressure moving through eastern wisconsin led to some light
snow today, mainly across northwest wisconsin along an inverted
trough. Snowfall has mainly ended across the northland as the low
has moved further away, taking much of the moisture and forcing
with it. Still getting scattered reports of flurries across
northwest wisconsin into the twin ports, so have kept a mention of
this going through 00z. Another shortwave trough will move into
the region late tonight and bring a weak cold front with it. This
front won't have much to work with in terms of moisture and
forcing, but some light snow is expected across our minnesota
counties for tonight into Thursday morning. Snowfall amounts will
be around 1 2 inch or less, but far northwest areas, including
international falls, may see up to an inch. Some light freezing
drizzle will be possible as the snow ends, but little to no icing
is expected.

The low-level inversion is expected to stick around through the
period as well, leading to areas of low stratus and patchy fog for
tonight, with the low clouds persisting into much of Thursday.

Clearing will start to move in late Thursday afternoon in western
areas behind the front. This inversion will also keep moderate
air quality in the region as well into much of Thursday. However,
improvement is expected behind the front as the inversion mixes
out and cleaner air arrives from the west.

Lows tonight will generally be in the 20s with the warmest
readings near lake superior. Highs Thursday won't move too much
with readings int the upper 20s and lower 30s.

Long term (Thursday night through Wednesday)
issued at 332 pm cst Wed dec 12 2018
the forecast area will be under the influence of a quasi-zonal flow
aloft with high pressure nearby. Even though there will be short
waves moving past the region Thursday night through Friday night, a
very dry atmosphere is in place with no precipitation expected.

Upper level and surface ridging covers the area Saturday. Another
short wave trof passes Saturday night and Sunday with no
precipitation. The upper level and surface ridging returns Sunday
night and lingers through Tuesday. Temperatures will be above normal
through the long term.

Aviation (for the 06z tafs through 06z Thursday night)
issued at 1151 pm cst Wed dec 12 2018
widespread clouds with ifr MVFR ceilings and MVFRVFR visibilities
as of issuance time. A cold front advancing towards the area will
bring a band of light snow slowly across the area from west to
east generally between 12z and 00z. I have brought a 6-9 hour
period of snow and ifr lifr visibilities and ceilings across each
of the terminals. Light south winds will slowly switch to
southwest even westerly but still remain less than 10kts. A return
toVFR conditions is expected between 21z and 03z, but clouds to
remain in the area.

Marine
Issued at 1042 pm cst Wed dec 12 2018
a cold front moving across the area on Thursday will cause
southwest winds to increase over lake superior. Winds will
gradually shift to the west as the front moves through, then back
towards the southwest on Friday. These increased winds will cause
building waves through the period. For now, have put out a small
craft advisory for Thursday mid morning through Friday afternoon.

The advisory is more for wind on Thursday and Thursday night, but
continuing into Friday as the waves remain high through much of
Friday. In fact, the advisory may need to be extended into Friday
night.

Preliminary point temps pops
Dlh 24 30 21 35 0 20 0 0
inl 21 32 22 36 40 70 0 0
brd 20 33 20 37 10 40 0 0
hyr 26 33 20 36 0 10 0 0
asx 24 34 22 39 0 10 0 0

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... Small craft advisory from 10 am Thursday to 4 pm cst Friday for
lsz121-140-146>148.

Short term... Bjh
long term... Gsf
aviation... Le
marine... Le


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 6 mi33 min WSW 1.9 G 4.1 31°F 1011.8 hPa26°F
PKBW3 7 mi141 min Calm 29°F 1012 hPa (+1.0)26°F

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN2 mi25 minno data7.00 miOvercast30°F26°F86%1011.8 hPa
Richard I. Bong Airport, WI5 mi26 minN 07.00 miOvercast28°F25°F90%1011.8 hPa
Duluth International Airport, MN13 mi26 minS 46.00 miFog/Mist29°F25°F85%1012.5 hPa

Wind History from DYT (wind in knots)
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Last 24hr------------------------------------------------
1 day agoNW10W6NW4W5CalmNW4------------------------------------
2 days ago----------------------NW14W14
G18
NW17NW14NW12NW12
G18
NW9NW11NW8NW9NW9NW8NW10

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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wmap_A
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.
Link to Loop

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Wind Forecast for Duluth, MN (1,6,7,8)
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Ground Weather Radar Station Duluth, MN
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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.