Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Village of Grosse Pointe Shores, 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 7:20AMSunset 7:25PM Sunday September 24, 2017 7:05 PM EDT (23:05 UTC) Moonrise 10:39AMMoonset 9:09PM Illumination 19% 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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This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ422 508 Pm Edt Tue Sep 5 2017
.showers over the waters... The areas affected include... Inner and outer saginaw bay... NEarshore and open waters from port austin to port huron mi... St. Clair river... At 506 pm edt...doppler radar indicated showers...capable of producing waterspouts and small hail. These showers were located across saginaw bay and the waters of lake huron south and east of port austin. Locations impacted include... White rock...bay port...port sanilac...port austin...caseville... Harbor beach...port hope...richmondville...sebewaing...gravelly shoals...tawas point...white stone point...tawas bay...central lake huron buoy...east tawas...lexington...au sable point and quanicassee. Precautionary/preparedness actions... Mariners should be on the lookout for waterspouts this evening. If a waterspout is sighted...avoidance is the best thing to do. && lat...lon 4391 8395 4399 8384 4399 8368 4405 8366 4405 8358 4419 8356 4417 8225 4371 8215 4349 8217 4294 8245 4295 8249 4301 8247 4322 8256 4377 8265 4400 8281 4404 8292 4395 8324 4369 8346 4355 8367 4365 8394
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ422 Expires:201709052300;;940858 FZUS73 KDTX 052108 MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 508 PM EDT TUE SEP 5 2017 LCZ422-LHZ421-422-441>443-462>464-052300-

7 Day Forecast for Marine Location Near Village of Grosse Pointe Shores, MI
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location: 42.46, -82.67     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 241930
afddtx
area forecast discussion
national weather service detroit pontiac mi
330 pm edt Sun sep 24 2017

Discussion
Record highs continue to fall here in southeastern michigan with the
upper level omega block ridge in place over virtally all of eastern
north america. The centroid to the upper level ridge axis has now
drifted to the east, but wavelength is large enough that a main
chunk continues to grip the area. Local maximum in thermal ridge
supported temperatures running over 90 degrees in many locations.

Record highs have been broken outright today at both mbs and fnt,
with the most recent temperature back to within one degree at dtw.

The exception has been the immediate shoreline areas adjacent to the
local waterways where a southeasterly wind trajectory has resulted
in some relief.

The thermal ridge axis will drift away from the state Monday
allowing southwesterly return flow to finally set up over the area.

The arrival of return flow is usually a harbinger of warmer weather
with warm air advection, but for this particular scenario the area
will actually see some cooling. The cooling may potentially be as
much as 2 to 3 degrees c at 850mb. Will continue to favor a warmer
solution with some increase in mixing heights. The forecast will
continue to call for upper 80s to around 90 degrees for maximum
temperatures at all locations both Monday and Tuesday.

Cold frontal passage remains progged to occur through the first half
of Wednesday with highs ranging from the mid 70s across the tri
cities to the low 80s across metro detroit where the frontal passage
will occur later. With better forcing staying well to the north of
se michigan and limited moisture ahead of the front, only a slight
chance of showers and thunderstorms will accompany the frontal
passage. Surface high pressure then builds into the region on
Thursday yielding pleasant weather as cooler 850 mb temps near 5 c
will limit highs to the mid 60s. A shortwave dropping southeast
through the great lakes on Friday will bring increased clouds and a
chance for showers along with a reinforcing shot of cooler air
keeping highs in the low to mid 60s to end the week.

Marine
Strong upper ridging will continue to influence the weather pattern
across the great lakes through Tuesday with dry weather and light
south or southeast winds, generally around 10 knots or less. A cold
front crossing the central great lakes Tuesday night will bring a
low chance of shower and thunderstorm activity. Winds behind this
front become northwest on Wednesday and increase to around 10 knots
for lakes st. Clair and erie, but in the 15 to 20 knot range for
lake huron.

Prev discussion
Issued at 1251 pm edt Sun sep 24 2017
aviation...

high pressure ridging at all levels continues to exert strong
influence on southeast michigan weather. Dry conditions will
continue to bring clear skies through tonight. Will have enough
return of boundary layer moisture on Monday to bring scattered
cumulus. Otherwise, will continue the trend of just some MVFR fog
for a couple of hours near dtw and yip around daybreak.

Dtw threshold probabilities...

* none.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Discussion... CB jd
marine... ... .Rbp
aviation... ..Rbp
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
45147 - Lake St Clair 2 mi66 min E 3.9 G 3.9 82°F 73°F1018 hPa (-1.3)
CLSM4 - St. Clair Shores, MI 11 mi66 min ENE 4.1 G 5.1 80°F 1019 hPa (-1.0)
AGCM4 13 mi48 min 85°F 1018.7 hPa
MBRM4 - 9014090 - Mouth of the Black River, MI 38 mi48 min 85°F 1018.3 hPa
FTGM4 - 9014098 - Fort Gratiot, MI 40 mi48 min ENE 5.1 G 5.1 75°F 1018.4 hPa68°F

Wind History for Fort Gratiot, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Selfridge Air National Guard Base, MI14 mi68 minS 410.00 miA Few Clouds84°F68°F59%1018.8 hPa
Coleman A Young Municipal Airport, MI19 mi13 minESE 610.00 miFair83°F64°F55%1018.4 hPa

Wind History from MTC (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmN3CalmCalmN4CalmNW3CalmCalmCalmSE3S6S5E6E6E5E6S6S4Calm
1 day agoS5S4S6SE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm1E5E5E4SE5S6S5S5Calm
2 days agoSE10S5S4SE6SE6SE6CalmCalmCalmN3CalmCalmE3E3E3E4E4S6SE7SE5SE6SE4S5SE4

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 (19,4,5,8)
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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.