Saturday, September23, 2017 L-36.com


Marine Weather and Tides
Grosse Pointe Woods, 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 7:19AMSunset 7:27PM Saturday September 23, 2017 2:16 PM EDT (18:16 UTC) Moonrise 9:41AMMoonset 8:36PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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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LCZ460 Lake St Clair- 408 Am Edt Sat Sep 23 2017
Today..Light and variable winds. Sunny. Waves 2 feet or less.
Tonight..Light and variable winds. Clear. Waves nearly calm.
Sunday..Light and variable winds. Sunny. Waves nearly calm.
Sunday night..Light and variable winds. Clear. Waves nearly calm.
Monday..Light and variable winds. Mostly Sunny becoming Sunny late in the morning becoming mostly clear. Waves nearly calm.
Tuesday..Light and variable winds. Mostly clear. Waves 2 feet or less.
Wednesday..North winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less.
LCZ460 Expires:201709232015;;800475 FZUS63 KDTX 230808 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 408 AM EDT Sat Sep 23 2017 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 nearly stationary across the eastern Great Lakes through the weekend and into early next week. LCZ460-232015-

7 Day Forecast for Marine Location Near Grosse Pointe Woods, MI
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location: 42.43, -82.9     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 231728
afddtx
area forecast discussion
national weather service detroit pontiac mi
128 pm edt Sat sep 23 2017

Aviation
Strong upper ridging anchored over the region will maintain
favorable aviation conditions through the period. Enough mid level
stability despite the seasonably warm and humid conditions to really
limit the potential for late day thunderstorm development. This
environment may support patchy fog during the early morning period,
particularly at dtw yip.

Dtw threshold probabilities...

* none.

Prev discussion
Issued at 405 am edt Sat sep 23 2017
discussion...

high temperature records will be in jeopardy once again today,
especially in the flint to tri cities region as interior sections of
lower michigan remain capable of highs in the lower to mid 90s.

These readings, along with surface dewpoint in the mid to upper 60s
will produce another round of heat index in the mid to upper 90s for
a few hours during mid to late afternoon. These readings are again
short of the 100 degree threshold for heat advisory headlines but
remain notable for the time of year and for occurring during the
weekend with so much outdoor activity. The slightly cooler locations
near the shorelines will also make another run at 90, especially
metro detroit with a little less influence from lake erie. Surface
high pressure that has been oriented southwest to northeast and
centered over lake erie will shift a little more over lower michigan
during the day. This will provide more of a light and variable wind
or a later developing southeast component to allow a longer period
of surface heating before weak lake influence can occur.

Mesoscale cam solutions, mainly just the hrrr, have a few specks of
convective activity again this afternoon. The same was true in last
night's runs for yesterday but with considerable uncertainty on
location. Prefer to monitor satellite trends again through the day to
pinpoint favorable locations for a possible late day shower or
thunderstorm, assuming similarly capped low levels can be overcome by
daytime heating alone.

The mid summer heat wave will continue Sunday through early next
week with a degree or two of cooling expected to occur each day.

This will be due to the core of the upper level ridge sliding
eastward along the atlantic coast as the long wave pattern begins
some adjustment from strong amplification over the last few days.

Still, we are looking at record or near record highs again in the
lower to mid 90s Sunday, lower 90s Monday, and upper 80s Tuesday.

The Tuesday numbers could also be revised upward in later forecasts
depending on cloud cover prior to the arrival of the next cold front
due Tuesday night into Wednesday. This frontal passage will bring
the next organized chance of showers and thunderstorms along with
sharply cooler temperatures. Readings are projected to be limited to
highs in the lower half of the 60s by Friday into next weekend.

Marine...

extended stretch of very warm and humid conditions will exist
through 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... ..Mr
discussion... Bt
marine... ... .Sf
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
CLSM4 - St. Clair Shores, MI 3 mi76 min ESE 4.1 G 5.1 74°F 1021.3 hPa (+0.3)
45147 - Lake St Clair 12 mi76 min SE 3.9 G 3.9 74°F 73°F1020.6 hPa (+0.5)
AGCM4 24 mi46 min 83°F 1020.8 hPa
MBRM4 - 9014090 - Mouth of the Black River, MI 45 mi46 min 87°F 1020.3 hPa
THLO1 - Toledo Light No. 2 OH 45 mi36 min E 4.1 G 4.1 76°F
FTGM4 - 9014098 - Fort Gratiot, MI 47 mi46 min E 1.9 G 2.9 76°F 1020.3 hPa66°F

Wind History for Fort Gratiot, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI6 mi23 minESE 710.00 miFair87°F68°F53%1020.4 hPa
Selfridge Air National Guard Base, MI14 mi78 minE 510.00 miA Few Clouds81°F72°F74%1021.1 hPa
Troy, Oakland/Troy Airport, MI17 mi21 minENE 510.00 miFair90°F60°F37%1021.3 hPa

Wind History from DET (wind in knots)
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Last 24hrE5SE6E4SE7SE5SE4SE3SE4SE4CalmCalmCalmCalmS3N3CalmCalmN3CalmCalmCalmCalmCalmSE7
1 day agoS9S9S8SE7E6SE8SE4SE6S7S6CalmCalmCalmCalmCalmCalmCalmCalmSE4SE4E3CalmE3SE6
2 days agoSW5S7S5S5S4SE4SE5S3S4S3CalmCalmCalmE4CalmCalmSE3CalmCalmS3--SW56S8

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 (14,3,4,5)
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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.