Monday, June21, 2021
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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 5:12AMSunset 9:08PM Monday June 21, 2021 2:01 AM CDT (07:01 UTC) Moonrise 4:34PMMoonset 1:50AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 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:202106170500;;388475 Fzus73 Kdlh 170431 Mwsdlh Marine Weather Statement National Weather Service Duluth Mn 1131 Pm Cdt Wed Jun 16 2021 Lsz143>146-162-170500- 1131 Pm Cdt Wed Jun 16 2021
.an area of Thunderstorms over the nearshore waters of 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... Two harbors to duluth mn... At 1131 pm cdt, 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 larsmont, to near french river, to superior harbor, moving east at 50 knots. Locations impacted include... Larsmont, superior harbor, bayfield peninsula sea caves, brule point, herbster, and barkers island. 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 4672 9212 4685 9191 4696 9183 4703 9169 4699 9096 4690 9098 4684 9109 4682 9118 4683 9122 4673 9151 4666 9190
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 210533 AFDDLH

Area Forecast Discussion National Weather Service Duluth MN 1233 AM CDT Mon Jun 21 2021

DISCUSSION. (This evening through Saturday) Issued at 236 PM CDT Sun Jun 20 2021

Summary: Rain ending, windy overnight, drying out before thunderstorm activity returns Thursday. Localized frost possible Tuesday morning.

After about 0.5 to 1" of much needed rain fell over a swath extending from Grand Forks to Duluth, with amounts tapering on either side of that line, rain will taper off tonight and won't return until later in the week. Wind is the main concern overnight and a Wind Advisory is in effect for Southern Cook County. Model guidance has been consistently showing strong wind gusts across these areas overnight tonight into Monday. Campers, in particular, may want to take extra precautions in order to secure campsites for high winds. Winds will slowly ebb through the day Monday and will try to go calm Monday into Tuesday. At that time, the cold air mass that will be crossing the region will be on its way east, but there may be a short window where winds calm and temperatures fall to levels where frost may be an issue in outlying areas. Presently, it looks more likely that temperatures will be just a touch too warm for it to occur, but it bears watching.

Warm air advection makes its way into the region Wednesday and will eventually bring chances for thunderstorms Thursday as a cold front crosses from Canada supplying a forcing mechanism. This will occur overnight, so limited instability will be present, but shear will be strong enough to support some tstorm activity. PWATs in the 1.7" vcty will also be supportive of higher rainfall rates.

High pressure builds for the weekend.

AVIATION. (For the 06Z TAFS through 06Z Monday night) Issued at 1233 AM CDT Mon Jun 21 2021

MVFR cigs in DLH and HYR will improve to VFR early this morning. VFR conditions are expected throughout the period for all terminals. Lingering showers over northwest WI will come to an end over the next few hours. A VFR stratocumulus deck is likely to develop today and remain in place until this evening. Scattered light showers will be possible in the late morning and afternoon hours for all terminals. Confidence in the exact coverage of these showers remains low, so we will use VCSH for now.

MARINE. Issued at 236 PM CDT Sun Jun 20 2021

Quiet at the moment, but wind speeds will increase on the backside of a low pressure system and be strong along the North Shore tonight where a Gale Warning is in effect. Small craft advisories are draped across the remainder of the nearshore waters. Winds will decrease slowly Monday as the pressure gradient relaxes as high pressure builds over the waters. Most of the higher wave heights will be outside of the nearshore waters (except the outer Apostle Islands zone may experience 4 ft waves) due to the NW nature of the wind direction.

PRELIMINARY POINT TEMPS/POPS. DLH 44 62 43 70 / 90 10 0 20 INL 40 61 39 70 / 20 10 10 20 BRD 44 64 42 76 / 80 10 0 10 HYR 43 63 40 72 / 90 10 0 10 ASX 44 63 43 70 / 90 10 0 20

DLH WATCHES/WARNINGS/ADVISORIES. WI . None. MN . Wind Advisory until 6 AM CDT early this morning for MNZ021.

LS . Small Craft Advisory until 10 AM CDT this morning for LSZ121- 145>148-150.

Small Craft Advisory until 10 AM CDT this morning for LSZ143-144.

Gale Warning until 10 AM CDT this morning for LSZ140>142.



DISCUSSION . Wolfe AVIATION . Unruh MARINE . Wolfe


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PNGW3 - Port Wing, WI 7 mi22 min NW 8.9 G 12 57°F 1004.4 hPa
SLVM5 - Silver Bay, MN 31 mi22 min NNE 6 G 16 54°F 1003.4 hPa
DISW3 - Devils Island, WI 33 mi62 min N 22 G 25 56°F 1002.8 hPa (+0.0)51°F
45027 - North of Duluth, MN 36 mi22 min NW 21 55°F 58°F1 ft1003.2 hPa47°F
DULM5 - 9099064 - Duluth, MN 44 mi44 min NW 18 G 27 56°F 61°F1004.1 hPa45°F
SXHW3 - Saxon Harbor, WI 47 mi22 min NNW 23 G 29 57°F 1002 hPa
PKBW3 48 mi62 min N 4.1 58°F 1006 hPa (+1.0)52°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 mi69 minNW 108.00 miLight Rain56°F54°F93%1003 hPa

Link to 5 minute data for KASX

Wind History from ASX (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmS6W5SW5CalmE3E7NE5NE4N3E6NE7NE9NE11N9N5NW4W5NW10
1 day agoNW5CalmNW4NW4W4NW3NW3NE6N9N9NE9N8N8N8N5CalmCalmN4N5CalmCalmCalmSW3SW3
2 days agoW7SW8SW7SW8SW7W8W7W8W8
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W6CalmN18
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N8W5SW5

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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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