Monday, May29, 2017 L-36.com


Marine Weather and Tides
Duluth, MN

Version 3.4
What's New / NOTES
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 5:17AMSunset 8:54PM Monday May 29, 2017 2:48 AM CDT (07:48 UTC) Moonrise 8:33AMMoonset 11:37PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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
LSZ144 1125 Am Cdt Sun May 28 2017
.a 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... Two harbors to duluth mn... At 1124 am cdt...doppler radar indicated a Thunderstorm...capable of producing winds to around 30 knots and pea size hail. This Thunderstorm was located near barkers island...moving east at 5 knots. Locations impacted include... Superior harbor...and barkers island. Precautionary/preparedness actions... Mariners can expect gusty winds to around 33 knots...locally higher waves...pea size hail...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4676 9217 4679 9214 4682 9208 4677 9180 4667 9186 4666 9193 4666 9203 4671 9210 4666 9211 4665 9216 4664 9218 4666 9224
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ144 Expires:201705281715;;350588 FZUS73 KDLH 281625 MWSDLH MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1125 AM CDT SUN MAY 28 2017 LSZ144-145-162-281715-

7 Day Forecast for Marine Location Near Duluth, MN
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location: 46.76, -92.09     debug


Area Discussion for - Duluth, MN
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Fxus63 kdlh 290539
afddlh
area forecast discussion
national weather service duluth mn
1239 am cdt Mon may 29 2017

Update
Issued at 645 pm cdt Sun may 28 2017
am in the process of doing some updates to the forecast for the
latest radar trends, that should be out shortly. Below is an
aviation update.

Short term (this evening through Monday)
issued at 256 pm cdt Sun may 28 2017
there were numerous showers and storms across the northland this
afternoon and these will continue for most of the night and
Monday. But, I think we should see some decrease in coverage as
solar support is lost. The culprit is a deep low pressure area
over southern manitoba and northwestern quebec. Vort maxima will
be rotating around the low and over the northland. One went
through this morning and early afternoon and another is coming
through mn and a few more are still upstream, taking aim on the
northland. With a low freezing level, these storms have been very
low-topped and especially productive small hail producers. Had a
pilot report of thunderstorm top over duluth of only 20,000k feet.

Expect about the same type of weather Monday, but maybe not quite
so rambunctious as the temperature lapse rate won't be quite as
strong with warmer 500 mb and little instability.

Long term (Monday night through Sunday)
issued at 256 pm cdt Sun may 28 2017
the closed upper low meanders around northwest ontario Monday night
through Tuesday night. Several pieces of energy, along with a pair
of tight short wave trofs, will rotate through the forecast area
during this time. Periods of showers are expected, but will be
difficult to time. This leads to the chance pops that will be
carried in the forecast through Tuesday night. Much cooler temps are
forecast as 850mb temps drop to near zero celsius through this
period. The rain will end from west to east Tuesday night as high
pressure builds into the region. After a dry Wednesday morning,
model differences begin in the afternoon. The NAM gem are dry, the
ecmwf GFS pop some showers over northern minnesota. This continues
Wednesday night. Used a blend which led to small pops over the
arrowhead early, then dry overnight into Thursday morning. Thursday
afternoon finds only the gem dry, the gfs ECMWF have some showers.

Have pops over the eastern third of the region to account for a
short wave trof dropping south from canada. The last piece of energy
moves over northwest wisconsin Thursday evening and have some small
pops in place. Dry elsewhere as high pressure arrives. Ridging
covers the area on Friday. Friday night through Saturday shows a
large model spread. The gem has ridging, the ECMWF develops a
surface low over southern minnesota and has a large swath of qpf,
the GFS is between. Used a blend which results in low pops Friday
night and Saturday.

Aviation (for the 06z tafs through 06z Monday night)
issued at 1239 am cdt Mon may 29 2017
cyclonic flow both at the surface and aloft in combination with
diurnal heating and some weak impulses aloft will keep showers in
the terminal forecasts through much of the TAF period. A surge of
colder air moving into the area from the northwest will sweep some
ifr ceilings into the terminals beginning shortly after issuance
time and continuing through at least 15z, slowly improving to MVFR
afterwards. Ceilings are likely to deteriorate again after 02z, but
this is most likely farther north and have limited this only to kinl
for now. Where clouds clear for a short while for the next several
hours fog may form, but have left out for now and will have to
monitor for later fog development.

Preliminary point temps pops
Dlh 46 56 43 54 40 70 20 30
inl 47 54 43 54 70 70 30 40
brd 49 57 45 57 30 40 20 20
hyr 47 57 44 56 30 70 30 40
asx 48 59 45 56 50 70 40 30

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Update... Le
short term... Clc
long term... Gsf
aviation... Melde le


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 1 mi49 min WNW 12 G 14 56°F 49°F
PKBW3 7 mi109 min S 1.9 54°F 1004 hPa (-1.0)50°F
45027 - North of Duluth, MN 11 mi29 min WNW 12 G 16 54°F 39°F48°F
45028 - Western Lake Superior 14 mi29 min W 9.7 G 9.7 50°F 46°F1 ft47°F
PNGW3 - Port Wing, WI 37 mi69 min SW 4.1 G 9.9 55°F 1003 hPa
SLVM5 - Silver Bay, MN 56 mi69 min SW 4.1 G 7 45°F 1001.7 hPa

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN4 mi55 minW 1110.00 miOvercast55°F51°F88%1003.4 hPa
Duluth International Airport, MN7 mi54 minWNW 910.00 miPartly Cloudy52°F48°F89%1003.4 hPa
Cloquet Carlton County Airport, MN22 mi54 minW 710.00 miOvercast52°F46°F82%1003.7 hPa

Wind History from DYT (wind in knots)
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Last 24hrSW5S3CalmSW9CalmCalmSW7SW3CalmS4W11SW12W14W19W13
G19
W14W14SW10W9SW8SW7W10SW5W11
G15
1 day agoS5SW8SW8SW8S7SW6SW5CalmNW6W9W5
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W9SW8SW6SW5S4S6SW4W4
2 days agoN3N6NE5NE8NE8NE6NE5E6E6NE3NE7NE8E5NE6N7NE9N4N6N6N5N4SW4SW5S6

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 (3,6,7,8)
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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.