Wednesday, June28, 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 5:15AMSunset 9:08PM Wednesday June 28, 2017 8:59 PM CDT (01:59 UTC) Moonrise 9:43AMMoonset 11:20PM Illumination 25% Phase: Waxing Crescent; Moon at 5 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 633 Pm Cdt Sat Jun 17 2017
.a strong 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... Silver bay harbor to two harbors mn... Two harbors to duluth mn... At 632 pm cdt...doppler radar indicated a strong Thunderstorm... Capable of producing winds to around 33 knots and small hail. This strong Thunderstorm was located near larsmont...or 14 nm southwest of split rock lighthouse...moving east at 20 knots. Locations impacted include... Larsmont... Two harbors... Castle danger... And twin points safe harbor. 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 4695 9185 4717 9145 4711 9118 4684 9152
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ145 Expires:201706180000;;398039 FZUS73 KDLH 172333 MWSDLH MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 633 PM CDT SAT JUN 17 2017 LSZ143>145-162-180000-

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 282354
afddlh
area forecast discussion
national weather service duluth mn
654 pm cdt Wed jun 28 2017

Update
Issued at 641 pm cdt Wed jun 28 2017
updated aviation section below for the 00z TAF issuance.

Short term (this evening through Thursday)
issued at 420 pm cdt Wed jun 28 2017
main concerns for the short term are the small risk of severe
thunderstorms this evening and heavy rainfall potential.

Surface low pressure was centered near park rapids this afternoon
with a warm front extending southeastward through the twin cities
and a cool front stretched south over western minnesota. Several
lobes of vorticity were evident in water vapor imagery and
regional radar. Thunderstorms have begun to redevelop along the
warm front near the twin cities within the last hour. Storms
should become more numerous and advance east-northeastward toward
our southernmost wisconsin zones. Strong to severe storms are
possible, especially south of a line from pine city to hayward to
park falls. The high-resolution hourly models suggest the 850 mb
theta-e ridge will pivot along our southern border with robust
moisture advection into that area. Heavy rainfall is still a
threat the storms tonight, along with a small risk of flash
flooding. Heavy rainfall is also expected in north-central and
northeast minnesota as the upper low over northwest minnesota
wobbles eastward during the next several hours. While rainfall
amounts of 1 to 2 inches are likely, the shallower terrain should
lead to a slower response and lower flash flood risk. Localized
minor flooding and ponding of water will be a concern tonight as
the upper low slides eastward tonight.

The low pressure will move out of the northland tonight with
showers lingering in northeast minnesota for much of the day
Thursday. Another area of low pressure aloft will begin to push
into our western zones during the afternoon hours with scattered
showers and isolated storms possible.

Long term (Thursday night through Wednesday)
issued at 420 pm cdt Wed jun 28 2017
with a semi-permanent upper trough over the western canadian
provinces, the northwest flow will continue, which will give the
northland cool temperatures and rounds of showers and
thundershowers.

In the shorter term, by Thursday evening the surface low that is
bringing all the rain today will be over southern ontario, but the
upper low will still be over lake superior, which will be keeping
the northland in cyclonic flow. The showers that pop up in the
afternoon will likely linger though the night. These will be
reinforced by another upper low that will give another round of
rain Friday and Saturday and into Sunday. It looks like we can say
confidently that our next dry day won't be until next Monday and
Tuesday when the northland will be between low pressure systems:
one pulling off to the east and another forming in the lee of the
rockies in response to yet another upper level low pressure
trough.

Aviation (for the 00z tafs through 00z Thursday evening)
issued at 641 pm cdt Wed jun 28 2017
strong surface low over the region producing widespread rain with
MVFR to ifr ceilings, and some convection in the vicinity of khyr
and kdlh. This surface low to slide slowly east over the next
12-18 hours, causing the low conditions to persist through much
of the TAF period. Winds to slowly turn to northwest by 09z
tonight. Thunderstorms expected to continue to affect khyr and
kdlh for the first hour or two of the TAF period, but then should
switch to mainly showers. A gradual rise in ceilings can be
expected to begin after 14z, withVFR conditions by the end of the
taf period.

Preliminary point temps pops
Dlh 54 71 54 66 60 30 30 50
inl 55 72 55 69 80 30 40 60
brd 58 77 58 71 20 20 50 60
hyr 58 72 54 70 70 20 30 50
asx 54 70 53 68 70 30 20 40

Dlh watches warnings advisories
Wi... Beach hazards statement until 8 pm cdt this evening for wiz001.

Mn... Beach hazards statement until 8 pm cdt this evening for mnz037.

Ls... Small craft advisory until 10 pm cdt this evening for lsz140>145.

Update... Le
short term... Huyck
long term... Clc
aviation... Le


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 6 mi42 min NE 6 G 9.9 53°F 52°F
PKBW3 7 mi120 min NNE 5.1 52°F 1001 hPa (-1.0)52°F
45027 - North of Duluth, MN 11 mi30 min ENE 16 G 18 51°F 47°F51°F
45028 - Western Lake Superior 12 mi30 min ENE 19 G 21 50°F 49°F6 ft50°F
SLVM5 - Silver Bay, MN 55 mi60 min ENE 11 G 22 54°F 1001 hPa (-1.4)

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN2 mi66 minENE 175.00 miRain52°F51°F100%999.3 hPa
Duluth International Airport, MN13 mi65 minE 81.50 miThunderstorm Heavy Rain Fog/Mist58°F57°F100%999.4 hPa

Wind History from DYT (wind in knots)
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Last 24hrS5S6CalmS5SW3CalmS4CalmN3NE8NE12NE13E9NE9NE13NE18
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1 day agoS3CalmSW6SW7SW6SW7SW8SW8S6SW8S5S5SW6W7SW12
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2 days agoNW8NW6NW8NW8NW4CalmSW5SW4W7W6S3W4CalmN4CalmN8N11
G16
NW19W11NW15
G25
NW8W9SE8SE3

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 (21,6,7,8)
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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.