Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Port Sanilac, 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 7:18AMSunset 7:23PM Sunday September 24, 2017 2:47 AM EDT (06:47 UTC) Moonrise 10:39AMMoonset 9:05PM Illumination 13% Phase: Waxing Crescent; Moon at 4 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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LHZ463 Lake Huron From Port Austin To Harbor Beach Beyond 5nm Off Shore- Lake Huron From Harbor Beach To Port Sanilac Beyond 5nm Off Shore- Lake Huron From Port Sanilac To Port Huron Beyond 5nm Off Shore- 948 Pm Edt Sat Sep 23 2017
Rest of tonight..South winds 5 to 10 knots. Waves 2 feet or less.
Sunday..Light and variable winds becoming southeast 5 to 10 knots in the afternoon. Waves 2 feet or less.
Sunday night..Light and variable winds becoming southeast 5 to 10 knots in the late evening and overnight. Waves 2 feet or less.
Monday..Light and variable winds. Waves 2 feet or less.
Monday night..Light and variable winds becoming south 5 to 10 knots in the late evening and overnight. Waves 2 feet or less.
Tuesday..South winds 5 to 10 knots in the morning becoming light and variable...then becoming south 5 to 10 knots late in the evening. A chance of. Waves 2 feet or less.
Wednesday..Southwest winds 5 to 10 knots veering to the northwest early in the evening...then becoming north 10 to 15 knots in the late evening and early morning. Waves 1 to 3 feet building to 4 to 6 feet in the late evening and early morning. Waves occasionally around 8 feet.
Thursday..Northwest winds 10 to 15 knots becoming north 5 to 10 knots in the late evening and early morning. A chance of. Waves 3 to 5 feet.
LHZ463 Expires:201709240800;;837867 FZUS63 KDTX 240148 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 948 PM EDT Sat Sep 23 2017 For waters beyond five nautical miles off shore on Lake Huron 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...High pressure, 30.10 inches, will continue to hold over the eastern Great Lakes region through the remainder of the weekend and into early next week. LHZ462>464-240800-

7 Day Forecast for Marine Location Near Port Sanilac, MI
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location: 43.54, -82.16     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 240402
afddtx
area forecast discussion
national weather service detroit pontiac mi
1202 am edt Sun sep 24 2017

Aviation
Strong upper ridging anchored over the region will maintain
favorable aviation conditions through the period. This environment
may support patchy fog during the early morning period, particularly
at dtw yip. Otherwise, very dry column with stability will produce
clear skies through Sunday evening.

Dtw threshold probabilities...

* none.

Prev discussion
Issued at 349 pm edt Sat sep 23 2017
discussion...

another day within the impressive +590 dam ridge and yet another day
of approaching and exceeding record highs. Flint has already broken
the record high of 89 degrees that was set in 1936, and dtw still
has another hour or two to reach the record of 90 degrees set in
1936. From a top down perspective, there are a number of indicators
that suggests the heart of the upper level ridge axis will now drift
through the CWA during the next 6 hours. These signs include
geopotential heights at 500mb closing off overhead this afternoon,
and the center of the 850mb anticyclonic circulation drifting across
the detroit metro. Main development today has been surface dewpoints
that are now somewhat deflated in the upper 50s to lower 60s, which
has kept heat indices in the 89 to 93 range. Another sign of less
boundary layer moisture has been a very muted and flat cumulus
response. Not expecting any spurious shower or thunderstorm
development today based on observational trends and forecast
soundings that show relatively deep capping in the 4-7 kft agl
layer. For minimum values tonight, started with a straight
persistence forecast but did massage some sources in that were
keeping lows in the lower to mid 60s based on cooler dewpoints.

The closed off center of the upper level ridge will roll eastward
into portions of pa and upstate ny on Sunday. Local extension of
both the 500mb and 300mb ridge axes will extend back into
southeastern michigan both on Sunday and again Monday, so little
change in weather is expected. Main forecast narrative will continue
to be hot, with afternoon readings climbing toward and exceeding the
90 degree mark. Weather story out references record highs for the
next couple days. As for a heat headline, will refrain with heat
indices remaining in the upper 80s to low 90s and with nighttime
minimums that have fallen back into the mid 60s.

Tuesday will mark the last day of the prolonged stretch of above
normal temperatures as the upper level ridge slides east. Highs will
again reach near record high values in the upper 80s over much of se
michigan under mainly sunny skies. A major pattern shift will then
begin midweek as a wave lifting through the western great lakes
pulls a cold front through the region early Wednesday. The better
forcing for precipitation looks to remain north of SE michigan
leaving only a slight chance for showers and thunderstorms
accompanying the frontal passage. Temperatures will then struggle to
climb through the 70s on Wednesday as cold advection commences.

Temperatures will fall to near normal values on Thursday with highs
in the upper 60s before a northern stream wave drops southeast
through the region on Friday. This wave will bring increased cloud
cover and showers along with a reinforcing shot of cooler air as
highs fall into the lower 60s.

Marine...

extended stretch of very warm and humid conditions continues through
the latter half of the weekend as the region remains under the
influence of strong upper ridging. This pattern will support light
winds - under 15 knots - and low waves during this time. These
conditions will persist into early next week. A cold front crossing
the central great lakes Tuesday night will bring a low chance of
shower and thunderstorm activity, along with winds shifting to the
west and increasing to around 15 knots.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Aviation... ..Sf
discussion... CB jd
marine... ... .Mr
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
45149 - Southern Lake Huron 5 mi47 min SSW 5.8 G 5.8 72°F 70°F1019.6 hPa (+0.2)
PSCM4 22 mi47 min WSW 7 G 8.9 74°F 1020.3 hPa (+0.3)
HRBM4 - 9075014 - Harbor Beach, MI 33 mi47 min WSW 6 G 8 76°F 1019.2 hPa (+0.3)65°F
FTGM4 - 9014098 - Fort Gratiot, MI 39 mi47 min SW 4.1 G 5.1 71°F 1019.8 hPa (+0.0)62°F
MBRM4 - 9014090 - Mouth of the Black River, MI 41 mi47 min 71°F 1019.8 hPa (+0.3)
KP58 47 mi56 min SW 5.1 72°F 1018.7 hPa64°F

Wind History for Harbor Beach, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Huron County Memorial Airport, MI47 mi52 minN 010.00 miFair66°F62°F88%1020.7 hPa

Wind History from BAX (wind in knots)
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Last 24hrS3CalmS4SW4CalmS3CalmSW3W4W4W3NW4NW5CalmCalmCalmSE4CalmS4SE4CalmCalmCalmCalm
1 day agoS5S4S4S3SE4CalmS4S6S3S5S3S3SW5CalmS4SE3SE3SE3SE3NE9
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2 days agoSE4S4S4S8S5S5S9S9S10S8SW8S10S9S4SE4SE6S5S5SE4S5S5S5S5S4

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 (2,6,7,8)
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Ground Weather Radar Station Detroit, 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.