Thursday, June22, 2017 L-36.com


Marine Weather and Tides
Bayfield, WI

Version 3.4
What's New / NOTES
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 5:12AMSunset 9:08PM Thursday June 22, 2017 1:34 PM CDT (18:34 UTC) Moonrise 3:10AMMoonset 6:20PM Illumination 2% Phase: Waning Crescent; Moon at 28 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
LSZ147 700 Pm Cdt Sat Jun 17 2017
.an area of Thunderstorms over western lake superior... The areas affected include... 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... At 659 pm cdt...radar showed an area of Thunderstorms...capable of producing winds to around 33 knots...half inch hail...and frequent cloud to water lightning. This area of Thunderstorms was located along a line extending from near twin points safe harbor...to 9 nm northwest of port wing safe harbor...moving east at 25 knots. Locations impacted include... Herbster...sand island...and apostle islands sea caves. 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 4691 9156 4714 9137 4715 9073 4691 9094 4682 9132
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ147 Expires:201706180045;;398690 FZUS73 KDLH 180000 MWSDLH MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 700 PM CDT SAT JUN 17 2017 LSZ143-146-147-162-180045-

7 Day Forecast for Marine Location Near Bayfield city, WI
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location: 46.86, -90.85     debug


Area Discussion for - Duluth, MN
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Fxus63 kdlh 221736
afddlh
area forecast discussion
national weather service duluth mn
issued by national weather service grand forks nd
1236 pm cdt Thu jun 22 2017

Short term (this afternoon through Friday)
issued at 1005 am cdt Thu jun 22 2017
tweaked sky, weather and wind for today. Thunderstorms are
expected over central and southern mn and central and southern
wi. Storms may brush the far southern zones for today. No other
changes at this update.

Long term (Friday night through Wednesday)
issued at 316 am cdt Thu jun 22 2017
the northland will be in a cool weather pattern over the weekend
into Monday. High temperatures will only be in the low to middle
60s, about 10 to 15 degrees cooler than seasonal normal. A few days
of northwest flow and passing shortwaves and upper troughs will mean
periods of showers and weak storms, especially during peak heating.

The strength of the solar heating is quite strong for this time of
the year. Combine that heating of the surface with the cool air, and
it will not be difficult to develop instability for scattered to
broken afternoon and early evening cumulus and light showers. The
gfs and NAM most unstable CAPE also suggest there may be enough
instability for rumbles of thunder in the afternoon. While large-
scale forcing does not look particularly good for generating much
thunder, those shortwaves would help generate thunder, and there are
model differences in the track and timing of the waves at this
point. Think it best to just maintain a low chance of thunder for
the afternoon and early evening hours of both Saturday and Sunday.

Drier air will likely move into the northland Monday as high
pressure approaches from the west, but there could be enough
moisture to get light showers and storms over the eastern arrowhead
and the far southeast forecast area in northwest wisconsin. The
drier air will mean more sunshine for Monday, so temperatures will
at least rebound to highs closer to 70 degrees.

High pressure will likely move through the northland Monday night
and or Tuesday, providing a period of clear skies. Temperatures
should warm back up to near seasonal temperatures in the middle 70s.

Southerly return flow will then set up late Tuesday into Wednesday
when an upper-level ridge moves into the region and low pressure
continues to approach from the west. Both the GFS and european
indicate a potential wet and stormy period around this time, or
shortly after. However, the GFS is significantly faster than the
european, with showers and storms moving into the northland
Tuesday night. The european holds it off until Wednesday night.

Aviation (for the 18z tafs through 18z Friday afternoon)
issued at 1236 pm cdt Thu jun 22 2017
essentiallyVFR conditions were across the area. However showers
and thunder were over the far southern area or the counties of
washburn, sawyer, and price where MVFR conditions are due to
lower visibilities in rain. ExpectVFR conditions today and this
evening across the area except in the far southern zones. MVFR
conditions in the south will shift south and east this afternoon
and evening. Then MVFR CIGS will move out of canada and into the
area late tonight and cover about the northwest half of the area
by 18z fri.

Preliminary point temps pops
Dlh 73 52 66 48 10 20 20 10
inl 73 50 62 47 20 30 40 40
brd 75 53 65 47 10 10 10 10
hyr 73 53 69 48 50 20 20 10
asx 74 54 69 50 20 20 20 10

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Short term... WFO dlh
long term... Grochocinski
aviation... WFO dlh


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DISW3 - Devils Island, WI 16 mi34 min SSW 8 G 12 58°F 1005.2 hPa (+0.5)54°F
SXHW3 - Saxon Harbor, WI 30 mi54 min SW 1.9 G 4.1 71°F 1006.1 hPa
SLVM5 - Silver Bay, MN 36 mi32 min WSW 16 G 18 53°F 1004.4 hPa

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John F Kennedy Memorial Airport, WI22 mi41 minSW 510.00 miFair70°F54°F57%1006.3 hPa

Wind History from ASX (wind in knots)
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Last 24hrSW6SE5S6N9NE11NE8E7N5N4CalmS4N6N5CalmCalmW3S4SW5W7SW5CalmNW6NW4SW5
1 day agoW6NW9N9NW11NW7NW7NW8NW4CalmW4SW3SW3S3SW3SW5SW4SW3CalmS3SW6Calm33SW6
2 days agoW8W11NW10W12
G18
W6W7W5W4W5W5SW6W3SW4SW6SW6W4W5SW4W5SW5CalmNW6N7
G15
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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 (14,3,4,5)
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Ground Weather Radar Station Duluth, MN
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weather_mapweather_map weather_map

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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.