Friday, September21, 2018 L-36.com


Marine Weather and Tides
Duluth, MN

Version 3.4
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9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:53AMSunset 7:08PM Friday September 21, 2018 10:18 AM CDT (15:18 UTC) Moonrise 4:58PMMoonset 2:05AM Illumination 88% Phase: Waxing Gibbous; Moon at 12 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 106 Am Cdt Sat Sep 15 2018
.strong Thunderstorms approaching the twin ports... 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... Silver bay harbor to two harbors mn... Two harbors to duluth mn... At 105 am cdt, doppler radar indicated strong Thunderstorms, capable of producing winds to over 30 knots. These strong Thunderstorms were located along a line extending from 37 nm northwest of french river, to 29 nm northwest of duluth lift bridge channel, to 38 nm west of barkers island, moving east at 30 knots. Locations impacted include... Castle danger, barkers island, superior harbor, larsmont, duluth lift bridge channel, twin points safe harbor, and french river. Precautionary/preparedness actions... These strong Thunderstorms will likely produce winds in excess of 34 knots...and pose a serious hazard for boaters. A special marine warning will likely be required. Boaters should consider heading for shore before these storms arrive. && lat...lon 4669 9229 4668 9224 4672 9224 4679 9214 4719 9144 4717 9128 4686 9155 4669 9174 4666 9196 4666 9203 4671 9210 4666 9211 4665 9216 4662 9221 4663 9228
LSZ144 Expires:201809150645;;664283 FZUS73 KDLH 150606 MWSDLH Marine Weather Statement National Weather Service Duluth MN 106 AM CDT SAT SEP 15 2018 LSZ143>145-162-150645-


7 Day Forecast for Marine Location Near Duluth, MN
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location: 46.76, -92.09     debug


Area Discussion for - Duluth, MN
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Fxus63 kdlh 211143 cca
afddlh
area forecast discussion... Corrected
national weather service duluth mn
643 am cdt Fri sep 21 2018

Short term (today through Saturday)
issued at 424 am cdt Fri sep 21 2018
the area of low pressure that brought plenty of rainfall to the
northland Thursday has shifted to the northeast over central lake
superior. As of 08z this morning, the northland remains under
northwesterly cyclonic flow from the low, which is keeping some
drizzle light rain showers over much of the region, along with some
reduced visibilities due to patchy fog. Rap and NAM model soundings
both are progging a somewhat shallow moist layer near the surface
nearly everywhere through mid morning, so I kept at least some
chances of precipitation over the entire region. The highest chances
of precipitation will remain over far northern minnesota along the
iron range and points north due to an upper-level trough axis moving
through and some mid-level impulses embedded in the trough make
their way through the area. Eventually, this precipitation will come
to an end this afternoon as the upper-level trough shifts eastward,
moving the favorable forcing out of the region. Surface high
pressure will then build into the region, which should bring some
cool overnight temperatures.

Lows tonight should dip into the lower to middle 30s for much of the
northland, so frost will be possible for a large chunk of the
northland. However, much will depend on cloud cover as some mid- to
high-level clouds will be possible, mainly over north-central
minnesota. Also, the recent rainfall from yesterday could inhibit
frost development. After discussing potentially issuing a frost
advisory for northwest wisconsin and up the north shore with our
neighboring forecast offices, we decided to hold off on issuing one
due to the uncertainty and letting the day shift have another
assessment.

Saturday will be mostly dry for much of the region with the high
pressure just to the south of the region, except for areas along the
iron range and points north as a low-amplitude mid-level shortwave
and low-level baroclinic zone moves in. Probably the bigger
consequence of this shortwave is increasing clouds from north to
south, with sunnier skies holding on over northwest wisconsin
through mid- afternoon. High temperatures Saturday will be a bit
below seasonal average, into the lower to middle 50s north to the
lower 60s south.

Long term (Saturday night through Thursday)
issued at 432 am cdt Fri sep 21 2018
a baroclinic zone stalled front will sag into and wobble around the
forecast area Saturday night and Sunday, serving as a focus for
chances for showers and thunderstorms for mainly northern minnesota.

Temperatures to be warmer than Friday, with a fairly large range
from north to south across the area, with the far northern zones
dipping to around 40 once again.

Another low pressure system will move across the area on Monday,
bringing increased chances for showers and storms for Sunday night
through Monday night. There is some potential for stronger storms
Monday evening, though it is uncertain that we will build enough
instability for severe storms. Warmer temperatures will be found
across the area on Monday, with highs over much of the area in the
60s to low 70s.

Tuesday we will move into the northwest flow on the back side of
the strengthening low pressure system now to our east. This
pattern should bring cooler temperatures and afternoon showers.

Highs sag back into the 50s for most locations. A fairly potent
looking shortwave drops through this northwest flow to bring
another round of showers and storms to the area on Wednesday and
Thursday, which also brings cooler temperatures for the end of
the week. Frost will once again be a concern Thursday night and
Friday night.

Aviation (for the 12z tafs through 12z Saturday morning)
issued at 641 am cdt Fri sep 21 2018
after initial conditions of MVFR ifr in stratus and rain drizzle,
we should see gradually improving conditions toVFR by 20z today.

Breezy northwest winds will provide turbulence with sustained
speeds of 15 to 20 knots with gusts in the 25 to 30 knot range.

These winds should diminish between 22z and 01z this evening to
less than 10kts. Some showers to approach kinl after 10z, but
conditions to remainVFR and have left as vcsh for now.

Preliminary point temps pops
Dlh 55 38 60 45 50 0 10 30
inl 56 37 53 36 80 30 50 50
brd 56 38 62 47 30 0 10 10
hyr 54 36 61 44 40 0 0 10
asx 55 39 63 45 50 0 10 30

Dlh watches warnings advisories
Wi... None.

Mn... None.

Ls... Small craft advisory until 4 pm cdt this afternoon for lsz121-
143>148.

Gale warning until 4 pm cdt this afternoon for lsz140>142.

Short term... Jts
long term... Le
aviation... Le


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DULM5 - 9099064 - Duluth, MN 1 mi30 min 49°F 65°F1011.2 hPa42°F
PKBW3 7 mi138 min WNW 11 53°F
45027 - North of Duluth, MN 11 mi28 min NW 18 G 19 50°F 63°F1011.6 hPa44°F
45028 - Western Lake Superior 14 mi28 min NNW 23 G 25 63°F4 ft1013.2 hPa

Wind History for Duluth, MN
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NE10
G21
NE16
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NE17
G26
NE14
G23
NE18
G26
NE18
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G24
NE15
G21
NE11
G17
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G14
NE4
G12
NW2
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G17
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G16
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G20
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E8
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NE5
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NE5
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G12
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G17
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2 days
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NE4
G11
NE6
G16
NE9
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G15
NE7
G15
NE5
G10
NE5
G11
NE3
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G7
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G11
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G6
NE3
G6

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Duluth - Sky Harbor Airport, MN4 mi83 minNW 20 G 2710.00 miOvercast and Breezy54°F46°F77%1008.8 hPa
Richard I. Bong Airport, WI5 mi83 minNNW 16 G 2710.00 miOvercast51°F44°F77%1008.8 hPa
Duluth International Airport, MN7 mi83 minNW 18 G 3210.00 miLight Rain and Breezy49°F43°F80%1008.8 hPa
Cloquet Carlton County Airport, MN22 mi83 minNW 15 G 274.00 miDrizzle46°F42°F87%1009.8 hPa

Wind History from DYT (wind in knots)
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Last 24hrE24NE23E25
G29
E27NE24
G31
NE24
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E28
G33
E27E28
G35
E31
G35
E28
G32
E23
G26
NE19NE11CalmSW6W14W19
G25
W17
G23
W18
G25
W18W20
G24
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G28
NW28
G34
1 day agoE5E8E8E11E14NE15NE13
G18
NE10NE14NE13E13E14NE11NE15NE15
G18
NE11NE13NE18NE16
G21
NE16
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NE18E20E22E22
2 days agoNE22
G26
NE19
G24
NE12NE14NE13E13E12NE12NE9E10E6SE5E7SE6SE6SE4E4E7SE4SE6SE7SE5S3E10

Tide / Current Tables for
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Weather Map and Satellite Images
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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.
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Wind Forecast for Duluth, MN (11,2,3,4)
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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.