Wednesday, January19, 2022
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Marine Weather and Tides
Herbster, WI

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 7:44AMSunset 4:54PM Wednesday January 19, 2022 1:43 AM CST (07:43 UTC) Moonrise 6:32PMMoonset 9:09AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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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LSZ146 Expires:202112160445;;696501 Fzus73 Kdlh 160409 Mwsdlh Marine Weather Statement National Weather Service Duluth Mn 1009 Pm Cst Wed Dec 15 2021 Lsz142>146-162-160445- 1009 Pm Cst Wed Dec 15 2021
.an area of Thunderstorms 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... Port wing to sand island wi... Silver bay harbor to two harbors mn... Taconite harbor to silver bay harbor mn... Two harbors to duluth mn... At 1008 pm cst, doppler radar indicated an area of Thunderstorms, capable of producing winds to around 30 knots and frequent cloud to water lightning. This area of Thunderstorms was located along a line extending from 10 nm southwest of superior harbor, to 14 nm west of ashland breakwater lighthouse, moving north at 55 knots. The area of Thunderstorms will be near... Duluth harbor, barkers island and superior harbor around 1020 pm cst. Duluth lift bridge channel, herbster and port wing harbor around 1025 pm cst. Siskwit bay harbor around 1030 pm cst. Bayfield peninsula sea caves around 1035 pm cst. Other locations impacted by the area of Thunderstorms include brule point. Precautionary/preparedness actions... Mariners can expect gusty winds up to 33 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4668 9224 4672 9224 4680 9212 4715 9149 4733 9125 4733 9092 4687 9103 4684 9109 4682 9118 4683 9121 4674 9150 4666 9193 4666 9203 4671 9210 4666 9211 4662 9221 4663 9229 4669 9230
LSZ146


7 Day Forecast for Marine Location Near Herbster, WI
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location: 46.83, -91.26     debug


Area Discussion for - Duluth, MN
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FXUS63 KDLH 190531 AFDDLH

Area Forecast Discussion National Weather Service Duluth MN 1131 PM CST Tue Jan 18 2022

DISCUSSION. (This evening through Monday) Issued at 437 PM CST Tue Jan 18 2022

Summary . Clipper moving through the area today has brought a fresh coating of snow to a large portion of the area. Strong winds in the wake of the clipper is expected to produce blowing snow in places tonight and into Wednesday morning. Colder air moves into the area for tonight through Thursday, with daytime highs around zero. Wednesday night should be our coldest night with the surface ridge just to our west. Moderation from the cold begins Friday, along with a chance of snow once again for Friday into Saturday.

Amazing clipper moving through the area today has brought a swathe of 1 to 4 inches of snow to areas generally north of highway 2, with some higher amounts along the North Shore where 5 to 8 inches have fallen. Now, in the wake of this clipper we have a nice combination of strong pressure rises, steep low level lapse rates tapping into strong northwest winds aloft, and a very tight pressure gradient that should produce strong northwest winds at the surface, with gusts over northern Minnesota of 30 to 40 knots, with the strongest winds along the North Shore where we will also have a katabatic component overnight. There may be higher gusts, but they should be short lived. These strong winds in combination with the fresh snowfall are going to cause blowing and drifting of snow tonight into early Wednesday morning. For this, I extended the Winter Storm Warning for southern Cook and Lake counties into Wednesday morning, which was done this morning. Have not made any other changes to the winter storm warning/advisory headlines at this time, though the Advisory for the Arrowhead may also need to be extended based on winds and visibilities observed there this evening. We are getting a big cold surge in here tonight, with near zero temperature values already into eastern North Dakota, and I expect sub zero minimum temperatures overnight tonight for nearly all of the forecast area. Again, a combination of winds and temperatures are going to cause dangerous wind chills overnight, and the wind chill advisories we already had in place are in good shape. Wednesday will be a cold one with highs around zero for most locations, which will be a shock compared to the near 40 we had in some places today. Our coldest night should be Wednesday night and Thursday morning with the surface ridge building in overhead, fresh snow cover and light winds. Have gone on the lower end of guidance and have some min temps in the -25 range. Wind Chill values are likely to become dangerous once again, so I anticipate needing yet another advisory or perhaps a warning for tomorrow night, but have held off for now due to all the other headlines we have out. Thursday to have similar temperatures to Wednesday, at least in part due to our very cold start.

Conditions begin to moderate going into Friday as we get some warm air advection ahead of our next chance of snow, due in for Friday and Saturday. Another surge of cold air moves in behind that system so we remain on the colder than normal side through the weekend, with highs still in the single digits. We have some more small chances for snow going into early next week, but there is poor agreement between the models, with sharp northwest flow aloft and some fast moving clipper like systems moving through for a few days, and have low confidence in these pops at this time. However, in this pattern, the confidence in the colder than normal temperatures is much higher.

AVIATION. (For the 06Z TAFS through 06Z Wednesday night) Issued at 1131 PM CST Tue Jan 18 2022

MVFR ceiling conditions will continue for most terminals over the next few hours, with the exception of INL that will be VFR through the period. Winds will be out of the northwest 15 to 20 knots with gusts to 25 to 35 knots. This may cause blowing snow at some locations which could temporarily decrease visibilities. By Wednesday afternoon, most terminals will scatter out with VFR conditions.

MARINE. Issued at 957 PM CST Tue Jan 18 2022

A strong low pressure center and cold front has moved across western Lake Superior this evening. Winds will strengthen this evening through Wednesday morning, with widespread gale-force winds likely. Gusts between 35 to 45 knots are likely, strongest along the North Shore and around the Apostle Islands due to downslope flow and a favorable fetch, respectively. Additionally, building waves along the South Shore in ice free areas will lead to increased risk of heavy freezing spray, which could even expand into the North Shore areas tonight as colder air pours into the region. Gale Warnings, Heavy Freezing Spray Warnings, and Small Craft Advisories remain in effect, though some of these have been combined for easier handling. The northwest winds will persist through Wednesday night, though they will diminish during the overnight hours and Thursday.

PRELIMINARY POINT TEMPS/POPS. DLH -4 2 -19 1 / 20 10 0 0 INL -9 -3 -26 -2 / 30 10 0 0 BRD -8 2 -22 0 / 0 0 0 0 HYR -2 5 -19 2 / 10 10 0 0 ASX 2 7 -12 4 / 40 50 20 20

DLH WATCHES/WARNINGS/ADVISORIES. WI . None. MN . Wind Chill Advisory until noon CST Wednesday for MNZ010>012- 018>021-025-026-033>038.

Winter Storm Warning until 8 AM CST Wednesday for MNZ020-021.

LS . Heavy Freezing Spray Warning until 4 AM CST Thursday for LSZ145>147-150.

Gale Warning until 4 AM CST Wednesday for LSZ143>147-150.

Heavy Freezing Spray Warning until 4 AM CST Wednesday for LSZ140>142.

Gale Warning until 10 AM CST Wednesday for LSZ140>142.

Small Craft Advisory until noon CST Wednesday for LSZ148.



DISCUSSION . LE AVIATION . KSE MARINE . PA


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PNGW3 - Port Wing, WI 7 mi64 min W 22G30 17°F 1008.1 hPa
SLVM5 - Silver Bay, MN 31 mi64 min WNW 9.9G23 13°F 1006.4 hPa
DISW3 - Devils Island, WI 33 mi44 min WNW 30G36 16°F 1006.2 hPa (+5.5)8°F
DULM5 - 9099064 - Duluth, MN 44 mi56 min W 14G20 10°F 1010.1 hPa1°F
SXHW3 - Saxon Harbor, WI 47 mi124 min W 14G27 19°F 1004.1 hPa
PKBW3 48 mi104 min NW 12 12°F 1010 hPa (+6.0)3°F

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John F Kennedy Memorial Airport, WI26 mi51 minW 14 G 278.00 miOvercast13°F5°F70%1008.7 hPa

Link to 5 minute data for KASX

Wind History from ASX (wind in knots)
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