Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Two Harbors, 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 5:21AMSunset 8:49PM Thursday May 24, 2018 8:32 PM CDT (01:32 UTC) Moonrise 2:28PMMoonset 2:22AM Illumination 77% Phase: Waxing Gibbous; Moon at 10 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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LSZ144 343 Am Cdt Thu May 24 2018
.a strong Thunderstorm 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... Two harbors to duluth mn... At 342 am cdt, doppler radar indicated a strong Thunderstorm, capable of producing winds to around 35 knots, small hail, and frequent cloud to water lightning. This strong Thunderstorm was located over superior harbor, or over barkers island, moving east at 20 knots. The strong Thunderstorm will be near... Brule point around 430 am cdt. Other locations impacted by the strong Thunderstorm include brule point. Precautionary/preparedness actions... Mariners can expect gusty winds to around 33 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. Intense lightning is occurring with this storm. If caught on the open water...stay below deck if possible and keep away from ungrounded metal objects. && lat...lon 4666 9203 4671 9210 4676 9214 4679 9213 4686 9157 4672 9156 4669 9176 4666 9193
LSZ144 Expires:201805240930;;445834 FZUS73 KDLH 240843 MWSDLH Marine Weather Statement National Weather Service Duluth MN 343 AM CDT THU MAY 24 2018 LSZ144-145-162-240930-

7 Day Forecast for Marine Location Near Two Harbors, MN
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location: 47.03, -91.67     debug


Area Discussion for - Duluth, MN
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Fxus63 kdlh 242340
afddlh
area forecast discussion
national weather service duluth mn
640 pm cdt Thu may 24 2018

Short term (this evening through Friday)
issued at 248 pm cdt Thu may 24 2018
many things to talk about today, the first is a short wave
ejecting out of a trough coming across the dakotas. This will tap
into a pool of instability in a weakly sheared environment. Some
storms have already kicked off from this feature, but will mainly
pose a lightning, heavy rain, and small hail threat. There is some
potential for short-lived severe storms, but so far they are
having trouble getting tall enough to get into the hail growth
regime, and are mainly collapsing upon themselves. As the cells
approach lake superior they should become more elevated in nature
as there is a strong capped layer around the lake and surrounding
area exacerbated by this mornings' convection.

The rich moisture stream has been causing a thick layer of fog in
and around lake superior that is causing a drastic weather effect
to occur. Temperature gradients are approaching a 40 degree
threshold between buoy 45028 and cloquet. So a generally cold,
cloudy foggy miserable day in downtown duluth while over the hill
folks are probably wishing they had air conditioning.

The upper trough approaches overnight and passes overhead on
Friday. Left best chances for pops up north closer to the
strongest forcing in the euro, but models differ a bit on the
location of the vort max, so that lowers confidence a bit there.

Friday should be warmer than today. Enough instability lingers
for another round of storms to develop in the afternoon some of
which could be severe.

Long term (Friday night through Thursday)
issued at 248 pm cdt Thu may 24 2018
the long term period stays quite active under zonal flow well
embedded in a warm air mass. Afternoon instability should be
enough to kick off convection most days, but the overall
atmosphere is weakly forced being primarily driven by short waves
and an inconsistent meandering sub-tropical jet. Have kept a
variety of low pops in the forecast with the main uncertainty in
the timing of features. Sunday is the one day that looks fairly
dry. Temperatures will remain well above normal through next week.

Aviation (for the 00z tafs through 00z Friday evening)
issued at 638 pm cdt Thu may 24 2018
a fairly unstable airmass will persist across the northland
throughout the period. Weak upper level and surface features will
set off a few rounds of precipitation tonight and Friday, with
showers and thunderstorms possible. One batch is expected to move
across northwest wisconsin overnight. On Friday, timing becomes
more difficult, but we should see an increase in precipitation
development in the afternoon.

Preliminary point temps pops
Dlh 60 85 59 84 50 30 10 20
inl 61 84 57 80 40 30 30 20
brd 63 87 59 89 40 10 10 0
hyr 65 85 58 88 60 50 20 20
asx 62 85 57 79 60 50 20 20

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... None.

Short term... Wolfe
long term... Wolfe
aviation... Dap


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45028 - Western Lake Superior 17 mi33 min Calm G 1.9 44°F 39°F1 ft1011.9 hPa (-1.7)44°F
45027 - North of Duluth, MN 18 mi33 min WSW 1.9 G 3.9 49°F 37°F1011.8 hPa (-1.6)49°F
DULM5 - 9099064 - Duluth, MN 28 mi51 min S 1 G 1.9 55°F 1011.1 hPa52°F

Wind History for Duluth, MN
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Two Harbors, MN4 mi38 minN 010.00 miFair68°F60°F78%1010.5 hPa
Silver Bay, MN19 mi38 minN 010.00 miFair73°F66°F78%1010.5 hPa

Wind History from TWM (wind in knots)
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Last 24hrCalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS7CalmSE5E3S3E6E4E3NE4E4
1 day agoW3W4W5W4W4NW3CalmCalmCalmCalmCalmW6W3S3S5S8SE8S9
G16
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2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3CalmCalmS10
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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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wmap_A
GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Duluth, MN (21,6,7,8)
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Ground Weather Radar Station Duluth, MN
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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.