Sunday, December15, 2019
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Marine Weather and Tides
New Odanah, WI

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:44AMSunset 4:22PM Sunday December 15, 2019 3:50 AM CST (09:50 UTC) Moonrise 8:01PMMoonset 10:43AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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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LSZ148 Expires:201909220130;;565630 Fzus73 Kdlh 220054 Mwsdlh Marine Weather Statement National Weather Service Duluth Mn 754 Pm Cdt Sat Sep 21 2019 Lsz121-147-148-162-220130- 754 Pm Cdt Sat Sep 21 2019
.an area of Thunderstorms over western lake superior... The areas affected include... Chequamegon bay-bayfield to oak point wi... Lake superior west of a line from saxon harbor wi to grand portage mn beyond 5nm... Oak point to saxon harbor wi... Sand island to bayfield wi... At 753 pm cdt, doppler radar indicated an area of Thunderstorms, capable of producing winds to around 40 knots. This area of Thunderstorms was located over oak point, moving northeast at 35 knots. Locations impacted include... Oak point and madeline island. Precautionary/preparedness actions... Mariners can expect gusty winds to around 40 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4661 9096 4667 9094 4670 9089 4674 9091 4701 9057 4684 9032 4674 9038 4662 9067 4664 9071 4657 9090
LSZ148


7 Day Forecast for Marine Location Near New Odanah, WI
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location: 46.6, -90.65     debug


Area Discussion for - Duluth, MN
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FXUS63 KDLH 150546 AFDDLH

Area Forecast Discussion National Weather Service Duluth MN 1146 PM CST Sat Dec 14 2019

SHORT TERM. (This evening through Sunday night) Issued at 342 PM CST Sat Dec 14 2019

An upper level trof was swinging through the forecast area this afternoon, and generating some clouds over the Arrowhead and much of northwest Wisconsin. Scattered snow showers were found over the tip of the Arrowhead, and east of Wisconsin Highway 27. High pressure was located over the Dakotas. The lake effect snow is having difficulty organizing along the south shore as the surface wind has been variable in direction through the day. Latest model guidance points toward the lake effect ending by 10Z/4am as the surface wind turns to the west. Drier air also is a factor by this time. Will end the Winter Weather Advisory at 10Z/4am. Elsewhere, a mainly clear sky is expected with the surface ridge nearby. Neutral temperature advection for most of the night, with warm air advection beginning late. Reasonably light wind will keep wind chill values in check. Minimum temps will be below zero, except in north central Wisconsin where cloud clover will be greater due to lake influences, and temps will be just above zero.

The surface ridge will be in the vicinity of the area Sunday. An upper level short wave trof will approach in the afternoon with an increase in mid level moisture. Minor model differences in the amount of moisture and the warm air advection occurring through the day, and whether there will be any precipitation. Followed a blended approach to model solutions and results in no precipitation. Max temps will be in the single digits, warmer near Lake Superior.

LONG TERM. (Monday through Saturday) Issued at 342 PM CST Sat Dec 14 2019

Quiet and continued cold for the first half of the week. Then trending warmer with temperatures near to above normal Thursday and beyond. Aside from lake effect snow chances along the South Shore, the long term is shaping up pretty dry with only a few slight chances of snow.

Westerly winds aloft Sunday night will usher in warmer air and should buoy temperatures overnight, which will keep most locations above zero until after 12Z. Skies will likely be cloudy overnight. A cold front will arrive early Monday morning and will usher in another surge of modified Arctic air. Temperatures will gradually rise a few degrees during the day. The fast northwest flow aloft will bring another weak wave through the Northland Monday night and Tuesday. Warm air advection is expected overnight into Tuesday morning with an Arctic front expected to arrive on Tuesday. The strong cold air advection may support a few scattered snow showers or flurries over northern Minnesota during the day. Measurable snowfall chances are slim. The Arctic air will keep temperatures nearly steady or falling Tuesday with and yield overnight lows in the -5 to -20 degree range for Wednesday morning.

The flow aloft will become more zonal on Wednesday ushering in much warmer air. Look for temperatures to trend a few degrees warmer on Wednesday and then much warmer for Thursday and Friday. Highs on Thursday will be in the low to upper 20s and a few spots in northwest Wisconsin may reach the low 30s on Friday.

AVIATION. (For the 06Z TAFS through 06Z Sunday night) Issued at 1146 PM CST Sat Dec 14 2019

An area of high pressure was centered along the Dakotas and Minnesota border late this evening and it will move southeast overnight into Sunday. As it does, winds will back to south to southwest. Much of the Northland was under VFR conditions late this evening, with a couple of exceptions. One was over northern Wisconsin where lake processes were producing MVFR ceilings and light snow or flurries. The light snow was mainly over northern Iron County. As low level winds back late tonight into Sunday morning, the lake clouds and snow showers will diminish. Another area of MVFR ceilings were over parts of the Iron Range and Arrowhead, but satellite indicates these were decreasing and that trend will continue tonight.

A shortwave and warm air advection will cause ceilings to move back into the area during the day Sunday into Sunday night from west to east. They will start out VFR and lower to low VFR or MVFR. There may be a period of light snow as well, but coverage is expected to be limited and we just have a VCSH mentioned at KBRD for now.

MARINE. Issued at 930 PM CST Sat Dec 14 2019

Western Lake Superior was between high pressure centered in the eastern Dakotas and low pressure well off to the east. Northwest winds were occurring between these features and were from 10 to 20 knots with higher gusts. Gusts of 20 to 25 knots will be common into early morning with higher values around 30 knots along a portion of the North Shore. The stronger North Shore winds were partially due to cold air drainage in addition to the stronger pressure gradient. The wind will diminish for most areas overnight but the stronger gusts along a portion of the North Shore are expected to continue into Sunday morning. The Small Craft Advisory for a portion of the South Shore will continue to midnight and will likely be dropped after this time. The Small Craft Advisory from Silver Bay to Grand Portage will remain in effect into Sunday morning . then winds will decrease as they begin to back. Winds will back for all areas through the day Sunday to west to southwest for most areas. Winds will increase to 10 to 20 knots again Sunday and be closer to 15 to 20 knots with higher gusts Sunday night. Conditions may become hazardous for small craft again Sunday night.

PRELIMINARY POINT TEMPS/POPS. DLH -9 7 3 10 / 10 0 10 0 INL -16 8 0 7 / 0 10 10 0 BRD -17 8 3 10 / 0 0 0 0 HYR -7 9 3 13 / 10 0 10 0 ASX 2 12 6 14 / 50 10 0 0

DLH WATCHES/WARNINGS/ADVISORIES. WI . Winter Weather Advisory until 4 AM CST Sunday for WIZ004.

MN . None. LS . Small Craft Advisory until midnight CST tonight for LSZ146>148.

Small Craft Advisory until 10 AM CST Sunday for LSZ140>142.



SHORT TERM . GSF LONG TERM . Huyck AVIATION . Melde MARINE . Melde


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SXHW3 - Saxon Harbor, WI 12 mi71 min SSW 7 G 9.9 8°F 1014.9 hPa
DISW3 - Devils Island, WI 33 mi51 min W 6 G 8 11°F 1016.5 hPa (+1.4)7°F

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John F Kennedy Memorial Airport, WI15 mi58 minWSW 710.00 miOvercast-1°F-4°F87%1017.7 hPa

Link to 5 minute data for KASX

Wind History from ASX (wind in knots)
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1 day agoCalmCalmSW3SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3SW4W4SW3W5SW4W6W9W7W7
2 days agoCalmE3CalmNE3NE5NE5NE7NE6NE6NE5NE6E3E5E3CalmE3E3CalmCalmSW3W5SW3S3SW3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Duluth, MN (4,6,7,8)
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Ground Weather Radar Station Duluth, MN
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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.