Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Superior, WI

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:12AMSunset 8:10PM Wednesday August 21, 2019 11:28 AM CDT (16:28 UTC) Moonrise 10:04PMMoonset 11:10AM Illumination 65% Phase: Waning Gibbous; Moon at 21 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:201908201330;;930312 Fzus73 Kdlh 201308 Mwsdlh Marine Weather Statement National Weather Service Duluth Mn 808 Am Cdt Tue Aug 20 2019 Lsz144>146-162-201330- 808 Am Cdt Tue Aug 20 2019
.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... Port wing to sand island wi... Two harbors to duluth mn... At 807 am 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 french river, or 12 nm east of duluth lift bridge channel, moving east at 40 knots towards port wing. Locations impacted include... Brule point, herbster, and bayfield peninsula sea caves. Precautionary/preparedness actions... Mariners can expect wind gusts up to 33 knots...locally higher waves...cloud to water lightning strikes...small hail...and heavy downpours. Boaters should seek safe harbor until these storms pass. && lat...lon 4678 9191 4693 9187 4692 9095 4684 9110 4682 9118 4683 9121 4674 9150 4671 9163
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 211508
afddlh
area forecast discussion
national weather service duluth mn
1008 am cdt Wed aug 21 2019

Short term (today through Thursday)
issued at 430 am cdt Wed aug 21 2019
an upper low was centered just west of james bay this morning with
a shortwave diving southeast toward the northland. This shortwave
will move through the region later today into tonight and we
expect an increase in cloud cover over far northern minnesota this
afternoon and but we expect dry conditions. Cooler temperatures
have moved into the region and highs today will range from 65 to
70 over far northern minnesota, to 70 to 75 from the brainerd
lakes into northwest wisconsin.

The shortwave will continue through the northland tonight and
again we kept the forecast dry. We expect lows in the forties for
most areas and would have gone colder over far northern minnesota
including the arrowhead and iron range but there will be at least
some clouds around due to the shortwave.

Surface high pressure will move east on Thursday causing surface
winds to become east to northeast. Speeds will be less than 10 mph
for most areas but be locally higher in the twin PORTS area. We
expect more clouds due to an increasing cumulus field with surface
heating. It will be another cool day with highs in the mid
sixties to around seventy.

Long term (Thursday night through Tuesday)
issued at 257 am cdt Wed aug 21 2019
cool and dry start to the long term with high pressure over the
region. Low temperatures on Thursday night could lower into the
upper 30s to low 40s east of the iron range and gogebic range
due to clear skies and cool air advected in. As the high
moves eastward, temperatures begin to warm into this weekend as
developing southerly flow advects warm, moist air to the upper
midwest. Model guidance has been trending a slower progression of
the next chance for rain for this weekend keeping an upper ridge and
drier air over the northern plains stalling the longwave trough
attempting to build in and its associated shortwaves. Best chance
for precipitation now looks like it will occur from Saturday
night into Monday. On Monday, guidance is in agreement of
developing a surface low over manitoba but differ in location and
track. Due to the influx of warm, moist air, upper level pattern
and surface cold front, there could be a potential for strong to
severe storm development on Sunday Monday. With showers and
thunderstorms lingering over the area from Sunday to potentially
into Tuesday and pw values approaching 2 inches, may also have to
monitor heavy rain and flooding potential.

Aviation (for the 12z tafs through 12z Thursday morning)
issued at 637 am cdt Wed aug 21 2019
after the fog lifts in the next couple of hours,VFR conditions
prevail through the TAF period as high pressure builds into the
region. Breezy winds develop this afternoon with gusts of 15-20kts
possible. A few cumulus clouds may develop in the afternoon.

Clouds increase across northern minnesota ahead of an upper level
disturbance moving through southern ontario tonight.

Marine
Issued at 1008 am cdt Wed aug 21 2019
no hazardous marine conditions are expected through the next 48
hours. No chance for precipitation across western lake superior
through Friday as high pressure builds across the upper great
lakes late this week. West winds today around 10 to 12 knots will
weaken slightly and become more northerly tonight at 5 to 10
knots, then northeast to easterly on Thursday at 5 to 10 knots,
slightly stronger at the head of the lake where gusts up to 15
knots are possible Thursday afternoon. East winds around 5 knots
Thursday night into early Friday, increasing to 5 to 10 knots
Friday afternoon. Wave heights remaining less than two feet
through the rest of the work week.

Preliminary point temps pops
Dlh 72 47 68 47 0 0 0 0
inl 67 45 66 48 0 0 0 0
brd 72 47 70 49 0 0 0 0
hyr 73 48 69 47 0 0 0 0
asx 73 50 67 45 0 10 10 0

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Short term... Melde
long term... Kc
aviation... Kc
marine... Jjm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 6 mi59 min NW 8 G 11 68°F 65°F1016.9 hPa47°F
PKBW3 7 mi149 min NNW 2.9 61°F 1018 hPa (+2.0)53°F
45028 - Western Lake Superior 12 mi29 min WNW 5.8 G 5.8 60°F 59°F1 ft1017.7 hPa (+1.3)53°F

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN2 mi74 minWNW 910.00 miPartly Cloudy64°F39°F40%1017.6 hPa
Richard I. Bong Airport, WI5 mi54 minNW 710.00 miFair68°F49°F52%1017.6 hPa
Duluth International Airport, MN13 mi94 minWNW 1010.00 miA Few Clouds66°F48°F52%1017.8 hPa

Link to 5 minute data for KDYT

Wind History from DYT (wind in knots)
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SW15SW9SW8SW7SW7SW7SW7SW6SW6SW7CalmCalmSW5W20S21NW10W4
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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    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.
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Wind Forecast for Duluth, MN (12,3,4,5)
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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.