Monday, December11, 2017 L-36.com


Marine Weather and Tides
Munising, MI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 8:22AMSunset 5:04PM Monday December 11, 2017 5:46 PM EST (22:46 UTC) Moonrise 1:23AMMoonset 2:00PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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
LSZ249 957 Pm Edt Thu Sep 28 2017
.a strong Thunderstorm over the waters... The areas affected include... Huron islands to marquette mi... Lake superior east of a line from manitou island to marquette mi and west of a line from grand marais mi to the us/canadian border beyond 5nm from shore... Marquette to munising mi... At 956 pm edt...doppler radar indicated a strong Thunderstorm... Capable of producing winds to around 30 knots. This Thunderstorm was located near presque isle...moving southeast at 20 knots. Locations impacted include... Laughing whitefish point...shot point...shelter bay...au train island...presque isle and grand island. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4649 8703 4644 8725 4659 8749 4669 8738 4665 8731 4673 8732 4679 8725 4667 8666 4641 8669 4640 8672 4643 8677 4640 8690
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ249 Expires:201709290245;;082710 FZUS73 KMQT 290157 MWSMQT MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE MARQUETTE MI 957 PM EDT THU SEP 28 2017 LSZ248-249-266-290245-

7 Day Forecast for Marine Location Near Munising, MI
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location: 46.38, -86.71     debug


Area Discussion for - Marquette, MI
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Fxus63 kmqt 112128
afdmqt
area forecast discussion
national weather service marquette mi
428 pm est Mon dec 11 2017

Short term (this evening through Tuesday)
issued at 356 pm est Mon dec 11 2017
heavy lake effect snow and blowing snow are the primary hazards in
the short term, but lakeshore flooding beach erosion is expected e
of marquette as well.

Gusty NW winds and lake effect snow have already begun in the
keweenaw this afternoon behind a compact sfc low over NE lake
superior. The low will shift to the SE of the CWA tonight, leading
to strong nnw winds over and near mainly central and eastern lake
superior. Models trended stronger with winds, so now expecting gusts
to 50mph tonight near and E of marquette. That combined with
moderate to heavy les will lead to blowing snow, especially along
the shoreline tonight into Tue morning. Winds and blowing snow
will then diminish Tue afternoon and evening.

Outside of the n-central u.P. Les will be light to moderate, with
generally 2-5 inches expected through tue. Main show is over the n-
central, where a more dominant type les band originating from lake
nipigon is expected. Exactly where the band hangs out is more
uncertain, but the majority of high-res models keep it near and just
e of marquette. Depending on placement and residence time of the
stronger band, could see somewhere around 17 inches of snow through
Tuesday in far eastern marquette and far western alger counties.

Elsewhere across the n-central, expect 6-10 inches in the nnw wind
snowbelts.

Large waves up to 16 feet will result in beach erosion and lakeshore
flooding tonight into Tue morning in alger county.

No changes were made to hazards and forecast thinking has changed
little from the previous shift.

Long term (Tuesday night through Monday)
issued at 426 pm est Mon dec 11 2017
models and ensembles suggest that the pattern featuring a mid upper
level ridge over WRN north america and a trough from NRN canada into
the ern CONUS will persist through this week but gradually deamplify
into this weekend. Several clipper shortwave troughs will
continue to brush the NRN great lakes bringing periods of light
snow followed by additional les. Temperatures will remain below
seasonal averages until the weekend with temps climbing to around
average.

Tuesday night, the higher res models suggest that as the winds
diminish, the lake induced trough and land breeze will keep the
stronger low level conv and heavier snow bands just to the east of
marquette into WRN alger county where additional amounts in the 3 to 6
inch range are possible. However, there is still some uncertainty
with the location of this mesoscale feature. Otherwise, les amounts
in the 1 to 3 inch range are expected. Over the west, sfc ridging
building into the area with winds becoming offshore, and inversion
heights at or below 4k ft should limit accumulations to an inch or
less.

Wednesday, winds becoming light and then southeast as a weak shrtwv
moves toward the area and a stronger shrtwv moves through ern
nebraska to missouri will end the lingering les over most of the
cwa. However, there may still be some very light amounts into the
north central and the keweenaw.

Wed night-fri, frequent clipper shrtwvs about 12 hours apart will
bring periods of light snow to the area with the potential for
additional moderate to heavy les as winds shift to the W and nw-n
in the wake of the weak associated sfc troughs lows. Confidence in
the timing of these features and potential les accumulations is
low.

Sat-mon, models ensembles still show a large spread with the
track of the Sat shrtwv and sfc low that could bring a more
significant area of snow, as the ECMWF remains farther south
compared to the GFS gefs.

Aviation (for the 18z tafs through 18z Tuesday afternoon)
issued at 109 pm est Mon dec 11 2017
light synoptic snow will give way to nnw lake effect snow and
blowing snow over the next few hours (earliest at kcmx and kiwd). As
is typical with lake effect, conditions will likely vary more than
shown in the forecast. A large, dominant lake effect snow band
should stay mostly E of ksaw, but may occasionally move into the taf
area with visibilities below 1 4sm. Lake effect will continue
through Tuesday night.

Marine (for the 4 pm lake superior forecast issuance)
issued at 356 pm est Mon dec 11 2017
northwesterly gales of 35 to 45 knots will develop this evening with
the highest gusts expected across the central and eastern zones.

Combined with increasing waves and low temperatures in the lower
teens, heavy freezing spray is likely tonight through early Tuesday.

Winds will decrease to 20 to 30 knots late Tuesday morning and then
below 20 knots by Wednesday morning. Winds will then increase to 15
to 25 knots late Thursday and into Friday as the next system
approaches from the west.

Mqt watches warnings advisories
Upper michigan...

winter weather advisory until 7 pm est Tuesday for miz007-013-
085.

Winter weather advisory until 10 am est 9 am cst Tuesday for
miz001>004-009.

Winter storm warning until 7 pm est Tuesday for miz005-006.

Lakeshore flood advisory from 10 pm this evening to 10 am est
Tuesday for miz006.

Lake superior...

heavy freezing spray warning until 1 pm est Tuesday for lsz264-
266-267.

Gale warning until 11 am est Tuesday for lsz249>251-266-267.

Gale warning until 10 am est Tuesday for lsz248-265.

Gale warning until 5 am est Tuesday for lsz243>245-264.

Gale warning until 1 am est midnight cst Tuesday for
lsz240>242-263.

Gale warning until 11 pm est 10 pm cst this evening for lsz162.

Lake michigan...

gale warning until 7 am est Tuesday for lmz221-248-250.

Short term... Titus
long term... Jlb
aviation... Titus
marine... Bb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KP53 4 mi50 min Calm 25°F 1006.6 hPa23°F
MCGM4 - 9099018 - Marquette C.G., MI 37 mi46 min WNW 4.1 G 8.9 25°F 1005.3 hPa (-0.4)18°F
GR4 - Grand Marais, MI 44 mi66 min SSW 5.1 G 7 22°F 1006.4 hPa
GRIM4 44 mi56 min W 26 G 35 28°F 1004.9 hPa24°F
FPTM4 - Fairport, MI 53 mi66 min WNW 16 G 20 27°F 1006.1 hPa

Wind History for Marquette C.G., MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Munising - Munising Lakeshore Observation, MI4 mi50 minN 0 mi25°F23°F92%1006.6 hPa

Wind History from P53 (wind in knots)
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Last 24hrN14N14N13NW14
G20
N12NW6W5W6W9
G17
SW6SW7SW3S3S4SW5S5S7S6--4S3S3S3Calm
1 day agoW6W8W10
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W6SW6SW6SW7SW7SW8SW11
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SW8CalmS4SW9SW8W4N12N16
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G25
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N14
2 days agoS4S4S6S6S5S3S3S4CalmCalm--S6S7S8S9N16N18N18N18N15N14
G21
N17
G22
N14NW11

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 Marquette, MI (17,4,5,8)
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Ground Weather Radar Station Marquette, MI
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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.