Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
Freeland, 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 7:53AMSunset 6:50PM Tuesday October 17, 2017 4:25 PM EDT (20:25 UTC) Moonrise 4:24AMMoonset 5:11PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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LHZ422 Inner Saginaw Bay Sw Of Point Au Gres To Bay Port Mi- 342 Pm Edt Tue Oct 17 2017
.small craft advisory in effect until 6 pm edt this evening...
Tonight..Southwest winds 15 to 20 knots diminishing to 10 to 15 knots...then increasing to 15 to 20 knots after midnight. Clear. Waves 1 to 3 feet.
Wednesday..Southwest winds 15 to 20 knots. Sunny. Waves 2 to 4 feet.
Wednesday night..Southwest winds 15 to 20 knots increasing to 20 to 25 knots in the late evening and overnight. Clear. Waves 2 to 4 feet. A small craft advisory may be needed.
Thursday..Southwest winds 20 to 25 knots becoming west 10 to 15 knots. Mostly Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. SEe lake huron open lake forecast for days 3 through 5.
LHZ422 Expires:201710180315;;007628 FZUS53 KDTX 171942 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 342 PM EDT Tue Oct 17 2017 For waters within five nautical miles of shore 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. LHZ422-180315-

7 Day Forecast for Marine Location Near Freeland, MI
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location: 43.56, -84.1     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 171929
afddtx
area forecast discussion
national weather service detroit pontiac mi
329 pm edt Tue oct 17 2017

Discussion
Wind gusts of 20 to 30 mph and overachieving temperatures this
afternoon are a nod to uninhibited insolation and efficient boundary
layer growth. Gusts briefly exceeded 35 mph at kmbs courtesy of
modest downsloping within SW flow. Forecast highs for this aftn were
raised to the upper 60s away from the glacial ridge, but have
already reached 70 in many locations by 19z. Grids for the remainder
of the evening have been updated accordingly.

Vigorous wave is noted on IR coming onshore near seattle this
afternoon. In response, lee cyclogenesis is underway in the prairie
of ab sk. This cyclone will track across south-central canada
through Wednesday, lifting toward james bay by Wednesday night and
ensuring a stout southwest gradient through tomorrow. Mixed
conditions will contain lows to the 40s tonight while 850mb temps
rise from 8c readings early today to 11c on wed. Conditions
otherwise unchanged, so the forecast is modified persistence - went
warmer than all available guidance for highs - about 2 degrees
warmer than today, or low 70s.

Orphaned cold front attendant to the james bay low will ease through
the area Wed night into early thurs. Continued tranquil weather
through this time as paltry moisture along the front leads to
nothing more than a low coverage of aftn CU on thurs. Highs once
again mid to upper 60s.

Surface and upper level ridging will be in place over the great
lakes Friday and Saturday, thanks to pacific energy digging an
amplified trough over the western conus. This will lead to continued
mostly sunny skies Friday and temperatures warming well above
average into the lower 70s both days. Clouds will begin to move in
Saturday as a shortwave lifts through.

Long range model guidance diverges on the timing of the upper trough
impacting the great lakes: the GFS brings the next chance of rain on
Sunday afternoon, while the ECMWF brings this moisture to the region
early Monday. Will continue to monitor in the coming days as to
exact timing of this disturbance moving through, but regardless of
timing, a cool and showery start to next week is expected as this
trough is forecast to deepen and linger over the great lakes through
at least mid week.

Marine
A pressure gradient between surface high pressure slowly moving east
through the ohio valley and low pressure in central canada will
maintain gusty southwest winds through the midweek period. Small
craft advisories remain in effect through this evening for saginaw
bay and the nearshore waters of lake huron from port austin to
harbor beach. Southwest winds will then diminish slightly this
evening below 20 knots before increasing to 20-30 knots again on
Wednesday across much of lake huron.

Prev discussion
Issued at 1243 pm edt Tue oct 17 2017
aviation...

surface ridging will remain in control through the TAF period as high
pressure slowly moves east through the ohio valley. A pressure
gradient between high pressure to the south and low pressure well to
the north in central canada will continue southwest flow this
afternoon and again on Wednesday. Confidence is high for southwest
flow operations andVFR conditions through the TAF period.

Dtw threshold probabilities...

* none.

Dtx watches warnings advisories
Mi... None.

Lake huron... Small craft advisory until 6 pm edt this evening for lhz421-422-441.

Lake st clair... None.

Michigan waters of lake erie... None.

Discussion... Jvc tf
marine... ... .Jd
aviation... ..Jd
you can obtain your latest national weather service forecasts online
at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBLM4 - Saginaw Bay Light #1, MI 27 mi25 min WSW 20 G 21 65°F 1016.3 hPa (-1.0)
GSLM4 - Gravelly Shoals Light MI 43 mi45 min SSW 15 G 17 63°F 1017.3 hPa
TAWM4 - Tawas City, MI 59 mi45 min WSW 8 G 13 67°F 1015.9 hPa

Wind History for Harbor Beach, MI
(wind in knots)    EDIT      (on/off)   Help
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Last
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SE6
SE5
G9
SW6
SW4
SW5
S6
SW7
SW7
SW7
SW6
SW6
SW6
G9
SW9
SW9
G12
SW11
G15
SW12
G15
SW11
G17
SW14
G19
SW13
G18
SW13
G20
SW12
G24
W17
G28
W17
G21
W17
G26
1 day
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NW12
G19
NW16
G22
NW18
G30
NW15
G20
NW11
G18
NW10
G14
NW9
G13
NW10
G17
NW9
NW8
G11
NW8
NW9
G13
NW8
G11
NW9
G12
NW8
G11
NW8
G14
N15
G19
N12
G16
W2
G6
N7
G10
N6
G9
NE5
E3
E4
2 days
ago
SE5
G10
E11
G14
SE11
SE14
G17
S10
G14
S3
S4
S13
G17
S13
G17
S10
G14
S16
G22
S21
G27
S16
G20
S14
G19
SW15
G23
SW12
G17
SW12
G17
SW14
G18
SW13
G17
SW15
G23
SW16
G22
W17
G25
W16
G23
W17
G26

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
MBS International Airport, MI2 mi32 minWSW 18 G 2710.00 miFair and Breezy70°F46°F42%1018.3 hPa
Jack Barstow Airport, MI11 mi31 minW 15 G 2110.00 miFair70°F45°F40%1017.3 hPa
Saginaw County H W Browne Airport, MI15 mi31 minWSW 17 G 2310.00 miFair68°F42°F40%1017.6 hPa

Wind History from MBS (wind in knots)
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Last 24hrSW10SW8S5S5S4S5S5S6S7S6S8S7S9SW7SW8S9S11SW16SW18
G23
SW18
G23
SW18
G32
W17
G25
SW15
G27
SW18
G27
1 day agoNW22
G31
N19NW8NW10NW13NW6NW8NW7NW5N5NW3NW4W4N4NW3W6W3SW434S5SW9S6SW10
2 days agoNE7NE4SW6N5SE7E6S5S10S16
G27
S16S16
G23
S14
G21
S16
G22
SW19
G28
SW17
G23
SW14
G32
SW17
G25
SW17
G24
W24
G37
W15W21
G30
W20
G26
NW22
G31
W17
G27

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 Detroit/Pontiac, MI (16,3,4,5)
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Ground Weather Radar Station Detroit, 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.