Tuesday, June19, 2018 L-36.com


Marine Weather and Tides
Grand Marais, MN

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:53AMSunset 10:04PM Tuesday June 19, 2018 11:34 PM EDT (03:34 UTC) Moonrise 12:00PMMoonset 12:53AM Illumination 42% Phase: Waxing Crescent; Moon at 7 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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LSZ162 Lake Superior West Of A Line From Saxon Harbor Wi To Grand Portage Mn Beyond 5nm- 954 Am Edt Tue Jun 19 2018 /854 Am Cdt Tue Jun 19 2018/
Rest of today..East winds less than 10 knots backing northeast in the afternoon. Waves calm to 2 feet.
Tonight..Southwest winds less than 10 knots veering west after midnight, then becoming southwest 5 to 15 knots late. Waves calm to 2 feet.
Wednesday..Southwest winds less than 10 knots becoming east 5 to 15 knots in the afternoon, then backing northeast late. Waves calm to 2 feet.
Wednesday night..Northeast winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet.
Thursday..Northeast winds less than 10 knots veering east by mid afternoon. Waves calm to 2 feet.
Thursday night..Southwest winds less than 10 knots. Waves calm to 2 feet.
Friday..South winds less than 10 knots veering west. Waves calm to 2 feet.
Saturday..West winds less than 10 knots becoming northeast 5 to 15 knots. Waves calm to 2 feet.
LSZ162 Expires:201806192200;;779835 FZUS63 KMQT 191354 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 954 AM EDT Tue Jun 19 2018 For waters beyond 5 nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...A 30.1 inch ridge will remain across the upper Great Lakes today. A 29.9 inch trough will move across the upper Great Lakes tonight and Wednesday. A 30.0 inch ridge will move back into the upper Great Lakes Wednesday night and will remain stationary into Friday. A 29.8 inch trough will move into the upper Great Lakes Friday evening with a 29.6 inch low pressure system moving into Lower Michigan on Saturday. LSZ162-192200-

7 Day Forecast for Marine Location Near Grand Marais city, MN
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location: 47.86, -89.87     debug


Area Discussion for - Duluth, MN
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Fxus63 kdlh 192329
afddlh
area forecast discussion
national weather service duluth mn
629 pm cdt Tue jun 19 2018

Update
Issued at 626 pm cdt Tue jun 19 2018
updated aviation section below for 00z TAF taf issuance.

Short term (this evening through Wednesday)
issued at 316 pm cdt Tue jun 19 2018
a low chance for a stray sprinkle in east-central minnesota this
evening, but otherwise dry under partly cloudy skies tonight across
the northland. Lows in the 50s with winds becoming calm.

On Wednesday a weak cold front drifts into the international border
region across northern minnesota, which could provide enough layer
moisture combined with the diurnal heating to produce a few light
rain showers. Otherwise a warm day across the northland with highs
in the low to mid 80s - except cooler by the lakeshore with a light
east northeast wind.

Long term (Wednesday night through Tuesday)
issued at 316 pm cdt Tue jun 19 2018
Wednesday night through Thursday night finds upper level and surface
ridging over the area. On Friday, model differences begin with
respect to the upper flow. The ECMWF has a cut off low moving
through the upper midwest, the GFS has the closed low much farther
south near arkansas, while the gem leans toward the ecmwf. Used a
blend which features just enough forcing over the area to generate
some spotty showers and storms, which lasts through Friday night. A
positively tilted upper trof is forecast to swing through the
forecast area Saturday and Saturday night. An elongated area of
vorticity accompanies this trof and provides enough forcing for more
showers and storms through Saturday evening, diminishing late as the
trof and forcing depart. Additional spotty activity may occur on
Sunday as additional weak pieces of vorticity clip the area before
ridging returns. Upper level and surface ridging cover the region
Sunday night and Monday.

Aviation (for the 00z tafs through 00z Wednesday evening)
issued at 626 pm cdt Tue jun 19 2018
weak ridge of high pressure to be followed by a very weak cold
front that slides through the terminals after 15z Wednesday.

The generally dry airmass and the weak features will keep
conditionsVFR with winds less than 10 kts through the taf
period.

Preliminary point temps pops
Dlh 53 80 52 75 0 0 0 0
inl 54 83 54 84 0 0 0 0
brd 57 81 55 81 20 0 0 10
hyr 53 80 54 79 0 0 0 0
asx 50 77 48 72 0 0 0 0

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Update... Le
short term... Jjm
long term... Gsf
aviation... Le


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KGNA 26 mi39 min Calm 51°F 1015.5 hPa46°F
GD5 - 9099090 - Grand Marais, MN 26 mi53 min 51°F 1014.8 hPa50°F
ROAM4 - Rock of Ages, MI 30 mi35 min SSE 9.9 G 9.9 56°F 1016.8 hPa (-0.6)
45006 - W SUPERIOR 48NM North of Ironwood, MI 37 mi45 min N 5.8 G 5.8 45°F 38°F1015.6 hPa (-0.8)
DISW3 - Devils Island, WI 71 mi35 min E 2.9 G 4.1 53°F 1015.8 hPa (-0.7)53°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Grand Marais/Cook County Airport, MN27 mi60 minN 010.00 miFair55°F48°F77%1016.9 hPa

Wind History from CKC (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmN3CalmCalmE4SE3E3SE3SE4E6S7SE4S5S4SE3CalmCalmCalmCalm
1 day agoN6NW4NW3NW5NW5NW7NW4NW4NW6N7N7N8NE5CalmN6CalmNW3CalmCalmS3CalmCalmCalmCalm
2 days agoN3CalmSE3CalmS4S6
G16
S5CalmSE7CalmS3SW5S4SW6E4S3S4CalmCalmCalmCalmNW6N11
G18
N5

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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wmap_A
GOES Local Image of GreatLakes    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Duluth, MN (23,6,7,8)
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Ground Weather Radar Station Marquette, MI
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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.