Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
Duluth, MN

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 7:29AMSunset 6:17PM Tuesday October 17, 2017 3:13 PM CDT (20:13 UTC) Moonrise 3:56AMMoonset 4:45PM Illumination 7% Phase: Waning Crescent; Moon at 27 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 816 Pm Cdt Sun Sep 24 2017
.strong Thunderstorms over western lake superior... The areas affected include... Duluth mn to port wing wi... Grand marais to taconite harbor mn... Lake superior west of a line from saxon harbor wi to grand portage mn beyond 5nm... Port wing to sand island wi... Sand island to bayfield wi... Silver bay harbor to two harbors mn... Taconite harbor to silver bay harbor mn... Two harbors to duluth mn... At 816 pm cdt...doppler radar indicated strong Thunderstorms...capable of producing winds to around 30 knots...small hail...and frequent cloud to water lightning. These strong Thunderstorms were located along a line extending from 16 nm northwest of larsmont...to 8 nm southeast of superior harbor...moving northeast at 50 knots. Locations impacted include... Raspberry island...split rock bay...raspberry island lighthouse... Castle danger...sand island...sugar loaf cove...tofte safe harbor... Twin points safe harbor...tofte...mouth of the little marais river... Beaver bay...mouth of the cross river...port wing safe harbor...brule point...herbster...apostle islands sea caves...larsmont...split rock lighthouse...red cliff...and french river. 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 these storms pass. && lat...lon 4689 9196 4715 9149 4754 9094 4762 9080 4687 9066 4682 9086 4688 9080 4693 9086 4691 9096 4684 9110 4682 9118 4683 9121 4674 9150 4666 9192
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ144 Expires:201709250215;;885660 FZUS73 KDLH 250116 MWSDLH MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 816 PM CDT SUN SEP 24 2017 LSZ141>147-162-250215-

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 171708
afddlh
area forecast discussion
national weather service duluth mn
1208 pm cdt Tue oct 17 2017

Short term (today through Wednesday)
issued at 400 am cdt Tue oct 17 2017
at 330 am, skies were mostly clear across the northland, with only
some high and thin cirrus. Temperatures ranged from 32 at hibbing
to 54 at the grand marais harbor. Winds were generally light.

Quiet weather will continue today through Wednesday, as we
remain in the warm sector of systems moving across central and
southern canada. A frontal boundary will extend southeast into
the minnesota arrowhead for a time today, before pushing northeast
this afternoon. There should be some high cloud cover at times
today, but overall it should be sunny. Temperatures are expected
to be on the high side of objective guidance today and Wednesday,
and we have raised temps with this morning's forecast. We should
see widespread temperatures in the upper 60s to lower 70s today,
and mid to upper 60s on Wednesday. A passage of a cold front on
Wednesday should bring a bit higher cloud cover, but moisture is
so limited that it looks like it will be at least partly sunny.

Winds will become a bit gusty across the region by this afternoon,
with even stronger gusts expected behind the cold front on
Wednesday.

Long term (Wednesday night through Monday)
issued at 400 am cdt Tue oct 17 2017
the northland can expect the relatively warm and dry weather to
continue through the end of the week, but a passing cold front will
likely bring showers (any maybe some thunder) Saturday and Saturday
night.

A surface ridge will build into the northland from the west
Wednesday night in the wake of Wednesday's cold front, providing
a clear and cold night across the northland. Although, the cold
spell is short-lived. An amplifying mid-level ridge will build
into the north-central us Thursday, and breezy southerly flow will
bring in unseasonably warm air into the region. The southerly
flow will continue towards the end of the week. Friday will be the
warmest day with sunny skies and breezy southerly flow. High
temperatures could reach the low 70s Friday, about 20 degrees
above seasonal normal!
a strong low-level jet will develop Friday night, and there will be
increasing humidity. Precipitable water values will increase to
around 1 inch. Passing shortwaves in the southwest flow aloft could
provide the forcing for some showers. An area of low pressure will
lift from the northern plains into manitoba and ontario Friday night
into Saturday night. Its strong cold front will sweep through the
northland from west to east late Saturday morning through Sunday
evening. This front will likely bring light to moderate showers
through the northland. The canadian and GFS have up to several
hundred j kg of mucape, so it's worth having a slight chance of
thunder in the forecast.

Cooler and drier air will move into the northland Saturday night
and Sunday, along with a weak surface ridge. Expect partial
clearing and highs returning to the 50s. The gfs, european, and
canadian remain in good agreement into Sunday night and Monday. A
quasi-vertically- stacked area of low pressure, somewhat like an
alberta clipper, will track across southern canada to the northern
great lakes. This low could bring showers to the northland Sunday
night and Monday. Temperatures will cool down even more Monday,
with highs in the lower to middle 50s.

Aviation (for the 18z tafs through 18z Wednesday afternoon)
issued at 1208 pm cdt Tue oct 17 2017
vfr conditions will prevail through the TAF period at all sites. A
period of low level wind shear is expected tonight into early
Wednesday morning at most sites across northeast minnesota.

South-southwest winds today remaining light with a few sporadic
gusts to around 15-20 knots possible, then becoming windy by mid-
day Wednesday behind a cold front with southwest to west winds
increasing to around 15 knots with gusts over 25 knots by 18z.

Preliminary point temps pops
Dlh 68 47 66 37 0 0 0 0
inl 69 48 63 32 0 0 0 0
brd 69 47 65 36 0 0 0 0
hyr 71 47 69 37 0 0 0 0
asx 71 49 70 40 0 0 0 0

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... Small craft advisory from 4 am to 10 pm cdt Wednesday for lsz140-
141.

Update... Grochocinski
short term... Dap
long term... Grochocinski
aviation... Jjm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 1 mi43 min SW 5.1 G 8 70°F 1012.6 hPa40°F
PKBW3 7 mi133 min N 2.9 68°F 1015 hPa (-1.0)42°F
45027 - North of Duluth, MN 11 mi33 min SSW 3.9 G 3.9 62°F 59°F49°F
45028 - Western Lake Superior 14 mi33 min SE 3.9 G 3.9 58°F 57°F51°F
SLVM5 - Silver Bay, MN 56 mi33 min SW 8.9 G 11 55°F 1012.9 hPa

Wind History for Duluth, MN
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NE17
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NE6
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W3
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G11
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G13
W12
G16
W11
G14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN4 mi19 minSSW 710.00 miFair70°F39°F33%1012.5 hPa
Richard I. Bong Airport, WI5 mi18 minSSW 810.00 miFair71°F38°F31%1012.9 hPa
Duluth International Airport, MN7 mi18 minSSW 1110.00 miA Few Clouds67°F36°F32%1013.3 hPa
Cloquet Carlton County Airport, MN22 mi18 minSSW 810.00 miFair66°F32°F28%1012.9 hPa

Wind History from DYT (wind in knots)
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Last 24hrSW12
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SW12S11SW8SW7SW7W7SW9SW8SW8SW8SW9S7SW8S7S6SW6SW7W3S4S8S9
1 day agoW7W13W7SW8SW8W10SW6S6SW7SW8SW10SW9SW7SW9SW8SW8SW7SW5SW11SW8SW12SW15
G20
SW14SW15
G18
2 days agoNE20NE20
G29
NE25
G31
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G30
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G32
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G26
E21
G28
E21NE29
G36
N20N20
G27
N18
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N12N10NW5NW5W6W7W9NW10W10W9W9

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 (16,3,4,5)
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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.