Saturday, March23, 2019 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 7:05AMSunset 7:24PM Friday March 22, 2019 11:28 PM CDT (04:28 UTC) Moonrise 8:36PMMoonset 7:21AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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 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- 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


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 230316
afddlh
area forecast discussion
national weather service duluth mn
1016 pm cdt Fri mar 22 2019

Short term (this evening through Saturday)
issued at 258 pm cdt Fri mar 22 2019
very quiet conditions through the day Saturday as high pressure
dominates the region and upper-level ridging builds over the
northern great plains. A large area of high pressure, currently
centered over central ontario, will translate southward over the
northland this evening and overnight. Clear skies and light winds
with the high overhead will enhance radiational cooling. Low
temperatures tonight will fall into the lower teens over north-
central wisconsin to near 20 over far northern minnesota. There is
some uncertainty about the potential for fog development over
northwest wisconsin, where the high pressure center and weakest
winds will be most likely. The high-res models are leaning towards
higher dew point depressions, although the rap soundings suggest at
least some patchy fog. I went ahead and added some patchy fog to the
forecast, but kept the coverage very isolated.

The high pressure will continue to dive southward into the ohio
river valley late tonight and Saturday morning, allowing southerly
return flow and warm air advection to develop across the northland.

Temperatures are forecast to be quite a bit warmer Saturday compared
to today, with highs in the lower to mid 50s. We did increase the
wind speeds for Saturday as stronger 850 mb level winds builds into
the northeastern portions of the forecast area. With boundary layer
mixing progged to be around 900 mb, there should be enough momentum
transport to mix down these winds to the surface. Gusts between 10
to 20 mph will be possible, especially in the arrowhead where the
strongest flow aloft will be.

Long term (Saturday night through Friday)
issued at 258 pm cdt Fri mar 22 2019
a cold front will move through the area Saturday night, but a
storm track through the lower great lakes will tie up a majority
of the available moisture, making precipitation in the northland
light and variable. There could be some trace amounts of freezing
drizzle up near the international border and along the north shore
of lake superior, but most of the precipitation that falls on
Sunday will start as rain and transition to snow Sunday evening.

High pressure will settle in after the cold front, bringing a
cool start to next week, with high temperatures reaching the
upper 30's with overnight lows in the teens for a majority of the
forecast area.

The next significant system will take aim at the area Thursday and
into Friday. There is still some disagreement on the exact storm
track between the models, but most areas can expect to receive
some rain before it transitions to snow during the overnight
hours. Forecasted pw values are low with this system, but given
the gradual warming trend, and the significant snowpack in some
areas there will continue to be a risk of river flooding.

Aviation (for the 00z tafs through 00z Saturday evening)
issued at 645 pm cdt Fri mar 22 2019
quiet conditions expected through Saturday as high pressure sits
over the northland this evening. Calm winds and clear skies
overnight will bring a slight chance for patchy fog in the early
morning, but confidence is not high on it being significant or
widespread. Patchy MVFR conditions are possible at khib, kbrd, and
khyr. Otherwise,VFR conditions expected.

Marine
Issued at 1015 pm cdt Fri mar 22 2019
fairly quiet over the waters this evening. Winds pick up on
Saturday from the southwest and will build waves along the north
shore. A front drops down from the north on Sunday morning and
will pick up wind speeds and build waves along the north shore
again except this time winds will be from the northeast.

Hydrology
Issued at 258 pm cdt Fri mar 22 2019
regional snowmelt continues, with temperatures above freezing
through the forecast period. This will lead to area river levels
increasing. The latest river stage forecasts indicate generally
rising trends in the river levels, with the ft. Ripley forecast
point along the mississippi river rising to the bankfull stage
during the day Saturday. The forecast is to keep the river level
there in the bankfull stage at least through mid-week. There is a
chance for precipitation mid- to late-week as well, which could
contribute to additional water rise.

Preliminary point temps pops
Dlh 20 50 29 36 0 0 0 20
inl 18 53 24 34 0 0 10 10
brd 18 53 28 42 0 0 0 20
hyr 15 52 27 41 0 0 0 10
asx 18 52 30 36 0 0 10 20

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Short term... Jts
long term... Ty g2
aviation... Wolfe js
hydrology... Ty jts
marine... Wolfe


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 6 mi41 min NNE 1 G 1.9
PKBW3 7 mi149 min Calm 28°F 1025 hPa (+0.0)22°F

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN2 mi34 minno data10.00 miFair28°F26°F93%1024 hPa
Richard I. Bong Airport, WI5 mi34 minN 010.00 miFair25°F24°F99%1023.7 hPa
Duluth International Airport, MN13 mi34 minN 010.00 miFair30°F17°F58%1024.2 hPa

Wind History from DYT (wind in knots)
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Last 24hr------------------------------------------------
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2 days ago------------------------------------------------

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

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Duluth, MN (0,6,7,8)
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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.