Saturday, September23, 2017 L-36.com


Marine Weather and Tides
Superior, WI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:56AMSunset 7:04PM Saturday September 23, 2017 5:53 AM CDT (10:53 UTC) Moonrise 9:25AMMoonset 8:06PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ145 107 Pm Cdt Fri Sep 22 2017
.a strong Thunderstorm approaching 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... At 106 pm cdt...doppler radar indicated a strong Thunderstorm...capable of producing winds to around 30 knots...small hail...and frequent cloud to water lightning. This strong Thunderstorm was located near port wing safe harbor...moving northeast at 20 knots. Locations impacted include... Port wing safe harbor...brule point...herbster...and apostle islands sea caves. Precautionary/preparedness actions... Mariners can expect gusty winds to around 33 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4679 9163 4703 9100 4691 9097 4684 9109 4682 9118 4683 9121 4674 9150 4672 9158
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ145 Expires:201709221845;;772611 FZUS73 KDLH 221807 MWSDLH MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 107 PM CDT FRI SEP 22 2017 LSZ145-146-162-221845-

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 230832
afddlh
area forecast discussion
national weather service duluth mn
332 am cdt Sat sep 23 2017

Short term (today through Sunday)
issued at 331 am cdt Sat sep 23 2017
the area remains in a very summer like pattern, pinched between a
large trough out over the far western conus, and ridging just
east of the mississippi river valley, with then troughing within
which are embedded hurricane maria and the remnants of hurricane
jose. This pattern is expected to continue through the next 36
hours. This pattern will bring warm and relatively humid
conditions to the area with waves of showers and thunderstorms
moving across the forecast area. Some of these waves will be more
active than others. Our main show of the night with the best upper
level support and mid level is now up in canada, but we have a
somewhat secondary wave that developed over central minnesota.

This wave is in the plume of best moisture and is in the low level
jet, but there is less support at the mid and upper levels for
stronger convection. However, it has produced a decent area of
showers and thunderstorms and have kept fairly high pops for the
remaining early morning hours going. Today this wave will continue
off to the northeast, likely dissipating during the morning
hours. It should be followed by a lull in the convection before
another wave of storms move through mainly minnesota this evening.

Sunday morning there should be another lull, only to be followed
by another round of showers and storms in the afternoon and
evening for mainly northwest and north central minnesota. This
pattern is also going to keep temperatures on the warm and humid
side, with cloud cover keeping a lid on things, and have kept
mostly to the consensus through Sunday.

Long term (Sunday night through Friday)
issued at 331 am cdt Sat sep 23 2017
the persistent southwest flow pattern across the central united
states will finally break down next week leading to near to below
normal temperatures returning after a warm weekend. Precipitation
chances continue through Tuesday as the main longwave mid-level
trough exits across the region, then a break in the precip on
Wednesday. However, with northwest flow developing in the wake of
the mid-level trough a low chance for light rain showers returns
late-week.

On the synoptic scale a mid-level ridge parked over the lower great
lakes region and a slow-moving deep longwave trough over western
states has resulted in a persistent southwest flow pattern at
mid upper levels across the great plains through the weekend into
early next week. The upper midwest will remain within the warm
sector ahead of the quasi-stationary frontal boundary parked along
this southwest flow pattern through Monday before the front finally
pushes east Tuesday. Once the front moves through Wednesday cooler
air will move in from the northwest with at least partially clearing
skies expected. Late week a fast-moving clipper-like mid-level
shortwave trough will approach the region leading to a chance for
light rain showers. Highs in the 50s to around 60 wed-thurs-fri with
lows in the upper 30s to low 40s. Broad area of high pressure
building in late-week should result in clearing skies, which could
result in a widespread frost freeze.

Aviation (for the 06z tafs through 06z Saturday night)
issued at 1212 am cdt Sat sep 23 2017
in northeast minnesota...VFR conditions will persist through much
of today with ceilings lowering to MVFR ifr tonight. Isolated
showers thunderstorms possible within the next few hours early
this morning then again during the day. South-southwest winds
today, gusty this morning then not as strong during the day around
10 knots or less. Decreasing ceilings tonight will lead to ifr or
worse conditions in some locations across northern minnesota.

In northwest wisconsin...VFR conditions will prevail through the
taf period at hyr with occasional mid to high level clouds and
light south to southeast winds.

Preliminary point temps pops
Dlh 77 60 78 59 50 60 10 60
inl 63 53 69 50 30 90 60 70
brd 70 60 79 55 70 60 30 70
hyr 85 65 85 63 10 10 10 30
asx 86 61 85 62 20 30 10 30

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Short term... Le
long term... Jjm
aviation... Jjm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 6 mi54 min N 2.9 G 4.1 65°F 1011.5 hPa (+2.3)62°F
PKBW3 7 mi114 min Calm 62°F 1011 hPa (+1.0)62°F
45027 - North of Duluth, MN 11 mi44 min ESE 1.9 G 3.9 65°F 62°F64°F
45028 - Western Lake Superior 12 mi44 min ENE 3.9 G 7.8 63°F 63°F1 ft63°F
SLVM5 - Silver Bay, MN 55 mi74 min ENE 1.9 G 2.9 62°F 1010.8 hPa

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN2 mi60 minN 010.00 miFair64°F62°F94%1011.5 hPa
Richard I. Bong Airport, WI5 mi79 minN 010.00 miFair62°F62°F99%1011.2 hPa
Duluth International Airport, MN13 mi59 minWNW 710.00 miMostly Cloudy73°F70°F90%1011.9 hPa

Wind History from DYT (wind in knots)
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Last 24hrNE8NW9NE11S16
G31
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SW4CalmSW5NW3NE8E6E3NE3NE7NE8NE9NE6NE3NE6NE4NE3CalmCalmN9
1 day agoW3CalmCalmNE6NE8NE8NE12NE16NE18NE15NE17NE21NE20NE18NE16NE15NE16NE17NE13NE11NE10E9NE10E9
2 days agoSE5E6CalmCalmCalmW5W16W10W13W11W14W11SW8W5W3W6S3S3S4SW3CalmS6S3S4

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Duluth, MN (6,6,7,8)
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Ground Weather Radar Station Duluth, MN
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weather_mapweather_map weather_map

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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.