Wednesday, December1, 2021
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Marine Weather and Tides
Duluth, MN

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:31AMSunset 4:23PM Wednesday December 1, 2021 1:05 AM CST (07:05 UTC) Moonrise 3:54AMMoonset 2:51PM Illumination 10% Phase: Waning Crescent; Moon at 26 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:202110102145;;969669 Fzus73 Kdlh 102116 Mwsdlh Marine Weather Statement National Weather Service Duluth Mn 416 Pm Cdt Sun Oct 10 2021 Lsz140>147-150-162-102145- /o.con.kdlh.ma.w.0027.000000t0000z-211010t2145z/ 416 Pm Cdt Sun Oct 10 2021
.a special marine warning remains in effect until 445 pm cdt... For the following areas... Duluth mn to port wing wi... Grand marais to taconite harbor mn... Grand portage to grand marais mn... Lake superior west of a line from saxon harbor wi to grand portage mn beyond 5nm... Outer apostle islands beyond 5 nm from mainland... 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 416 pm cdt, severe Thunderstorms were located along a line extending from 14 nm northwest of castle danger, to near sugar loaf cove, to 14 nm southeast of tofte safe harbor, moving north at 30 knots. Hazard...wind gusts to 40 knots and large hail. Source...radar indicated. Impact...small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. Locations impacted include... Raspberry island lighthouse, split rock bay, castle danger, sand island, sugar loaf cove, horseshoe bay and safe harbor, tofte safe harbor, madeline island, twin points safe harbor, tofte, beaver bay, mouth of the cross river, bayfield peninsula sea caves, herbster, larsmont, and red cliff. Precautionary/preparedness actions... && lat...lon 4788 8988 4678 9064 4686 9081 4690 9080 4693 9086 4684 9110 4675 9152 4692 9189 4715 9149 4758 9088 4773 9055 time...mot...loc 2116z 195deg 32kt 4727 9179 4753 9111 4745 9054 hail...>.75in wind...40kts
LSZ145


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 010519 AFDDLH

Area Forecast Discussion National Weather Service Duluth MN 1119 PM CST Tue Nov 30 2021

DISCUSSION. (This evening through Monday) Issued at 446 PM CST Tue Nov 30 2021

Summary: A shortwave system will bring snow showers across the area tonight. A Winter Weather Advisory is in effect for portions of the North Shore. Periodic chances of precipitation will continue for the next week, with a cold snap over the weekend.

A shortwave will bring another round of frozen precipitation to the region tonight into Wednesday. Due to advection of dry air aloft into the back end system, some slight chances for freezing rain among the snow showers is possible, but the main form of precipitation should be snow. No accumulations of ice are expected, but roads could still be slick for the morning commute from frozen precipitation, especially for our southern zones. Currently, areas further south should see a trace of snow, while areas in northern Minnesota and far northern Wisconsin could see up to two inches of snow from this system. Along the North Shore, southerly flow in the lower atmosphere could enhance snowfall both from local terrain and lake effects. These areas could see snow up to 4 inches, and a Winter Weather Advisory has been issued for overnight into Wednesday morning.

Wednesday night into Thursday, an upper level trough with a strong surface low will move east through Ontario. Small shortwaves in the westerly flow south of the system could bring scattered light snow showers across the area. It seems that most of the snowfall should be north of the Canadian border, but certainty is still high on where these showers could fall.

The largest system of the week is expected to come this weekend. A deep upper level trough will move east through the upper Midwest and pass to the south of our area. The highest amounts of QPF are expected to fall over the CWA, which could lead to widespread snowfall. Models are surprisingly in good agreement for being so far out, but are subject to change. This system will be watched closely. Behind the low, cold air aloft will move south over the area, and we could see much lower temperatures by this time next week.

AVIATION. (For the 06Z TAFS through 06Z Wednesday night) Issued at 1119 PM CST Tue Nov 30 2021

A warm front will pass through the region tonight, bringing a period of snow and possibly some freezing drizzle overnight and early Wednesday morning from west to east. A bit of LLWS will be possible at BRD/INL as this system passes through tonight. Ceilings will lower to MVFR and IFR, lingering into Wednesday morning, with some fog also possible at times. As a cold front passes through Wednesday afternoon into Wednesday evening, winds will become southwesterly and then northwesterly with LLWS likely at all terminals.

MARINE. Issued at 1003 PM CST Tue Nov 30 2021

A clipper system will pass through tonight, bringing some mixed precipitation and a lull in gusty winds. However, southerly winds will increase in strength later tonight especially for parts of the South Shore and Apostle Islands. A cold front will then pass through Wednesday afternoon and evening, causing winds to strengthen further for all nearshore zones from the southwest, then becoming northwest Wednesday evening. Wave heights will build for parts of the north and south shores as well, with wave heights up to around 3 to 6 feet and occasionally higher waves possible. A new suite of Small Craft Advisories have been issued through Wednesday, and a Gale Watch is in effect for the Apostle Islands and the North Shore from Silver Bay to Grand Portage Wednesday night through Thursday morning where wind gusts to around 35 knots will be possible. Winds and waves will gradually ease Thursday afternoon and evening with high pressure moving into the area.

PRELIMINARY POINT TEMPS/POPS. DLH 24 42 31 37 / 70 10 0 0 INL 20 40 26 32 / 70 20 10 0 BRD 29 45 31 40 / 60 0 0 0 HYR 24 43 31 41 / 60 10 0 0 ASX 22 43 31 40 / 60 10 10 0

DLH WATCHES/WARNINGS/ADVISORIES. WI . None. MN . Winter Weather Advisory from 3 AM to 9 AM CST Wednesday for MNZ021.

LS . Small Craft Advisory from 4 PM Wednesday to 4 PM CST Thursday for LSZ121-143>147.

Gale Watch from Wednesday evening through Thursday morning for LSZ140>142-150.

Small Craft Advisory from 4 PM to 8 PM CST Wednesday for LSZ140>142.

Small Craft Advisory from 4 AM Wednesday to 4 PM CST Thursday for LSZ148.

Small Craft Advisory from 4 AM to 8 PM CST Wednesday for LSZ150.



DISCUSSION . Kossen AVIATION . Melde/JDS MARINE . JDS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 1 mi48 min W 2.9G4.1 32°F 1012 hPa13°F
PKBW3 7 mi66 min 0 27°F 1014 hPa (-3.0)21°F
PNGW3 - Port Wing, WI 37 mi86 min SE 1.9G2.9 29°F 1013.5 hPa
SLVM5 - Silver Bay, MN 56 mi86 min N 1.9G2.9 31°F 1013.5 hPa

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN4 mi-42259 minWNW 10 G 1810.00 miMostly Cloudy34°F27°F75%1017.3 hPa
Richard I. Bong Airport, WI5 mi71 minN 010.00 miOvercast27°F16°F63%1013.2 hPa
Duluth International Airport, MN7 mi71 minSSE 810.00 miOvercast30°F12°F47%1013.2 hPa
Cloquet Carlton County Airport, MN22 mi71 minN 010.00 miOvercast28°F12°F51%1010.8 hPa

Link to 5 minute data for KDYT

Wind History from DYT (wind in knots)
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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