Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Grosse Pointe Park, MI

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:53AMSunset 9:13PM Wednesday June 20, 2018 9:33 AM EDT (13:33 UTC) Moonrise 12:44PMMoonset 12:49AM Illumination 46% Phase: First Quarter Moon; Moon at 7 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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LCZ422 409 pm edt Mon jun 18 2018 a marine weather statement has been issued for the following areas... NEarshore and open waters from port sanilac to port huron mi... St. Clair river... At 408 pm edt, doppler radar indicated strong Thunderstorms, capable of producing winds to up 30 knots. These Thunderstorms were located along a line extending from 6 nm east of port huron to 12 nm northwest of st. Clair, moving east at 30 knots. Locations impacted include... Algonac and st. Clair. Precautionary/preparedness actions... Mariners can expect gusty winds up to 30 knots, locally higher waves, lightning strikes, and heavy downpours. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4296 8242 4299 8242 4262 8252 4261 8253 4260 8256 4255 8259 4256 8259 4261 8256 4257 8259 4258 8259 4261 8258 4261 8259 4256 8262 4256 8260 4255 8264 4300 8242 4297 8241 LCZ422 Expires:201806182115;;741688 FZUS73 KDTX 182009 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 409 PM EDT MON JUN 18 2018 LCZ422-LHZ443-464-182115-

7 Day Forecast for Marine Location Near Grosse Pointe Park city, MI
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location: 42.34, -82.94     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 201051
afddtx
area forecast discussion
national weather service detroit pontiac mi
651 am edt Wed jun 20 2018

Aviation
Lower tropospheric cyclonic circulation will pass from far sw
michigan this morning to portions of lake erie by this afternoon.

Vfr to occasionally MVFR rain is occuring in the warm advection
ahead of this disturbance. Rain will persist this morning before
moving out of the area around after the noon hour. Boundary layer
cloud will persist this afternoon before substantial dry air moves
in for tonight.

For dtw... Moderate rain to move out quickly this morning, with
persistent low level moisture holding through the noon hour.

Clearing to occur late afternoon and early evening.

Dtw threshold probabilities
* high for ceiling 5000 ft or less through the morning and
afternoon.

Prev discussion
Issued at 334 am edt Wed jun 20 2018
discussion...

forecast focus is first on the developing area of showers through
the early morning as a shortwave tracks across the northern ohio
valley and then on the upper low for the weekend.

Currently there is a stationary front laid out across the northern
ohio valley with a shortwave rippling along it extending north into
southern mi. A few features of note include an elevated layer of the
stationary front laid out just north of i69. Some radar returns have
been seen along this 850mb theta E gradient through the overnight
though obs indicate nothing is has been hitting the ground. This
elevated front will sink southward through morning as high pressure
builds into northern mi. The shortwave looks to strengthen slightly
this morning while eventually phasing with the 850mb front. It will
first release a filament of vorticity up along the front which is
touching off showers over SW lower mi as of 06z. Between 09-15z the
elevated front, vorticity, and isentropic ascent will expand
coverage over SE mi mainly south of i69. Coverage upstream and
expected convergence of features will warrant likely pops. Showers
will continue through about 15-18z as the deformation region slides
through. Could see an isolated thunderstorm but instability is very
weak as is lapse rates so looking more for heavy rainfall as pwats
still hovering around 1.75 inches are still present. Northeast flow
as the surface and excessive cloud cover through most of the day
will keep temps down in the mid 70s.

Backdoor cold front will slide through Wednesday night ushering in
area of high pressure and forcing the main baroclinic zone farther
south into ohio. Temps will rebound slightly Thursday with clear
skies and strong insolation, with temps nearing 80 for many
locations. Thursday will be a dry day but could see the northeast
winds gusting to around 20 mph as gradient tightens.

Attention then turns to a cutoff low over the central plains that
will lift through the southern great lakes over the weekend. A jet
streak in the southern stream of the jet will pick up the low and
advect it eastward starting Thursday. The mid level closed low will
open as lifts through southern mi Friday night and Saturday as it
phases with the northern stream of the jet over NE ontario. Extended
period of showers and thunderstorms will be possible Friday through
Saturday. Models have been fairly consistent with this scenario
outside of being a bit more progressive with the wave in the latest
run. As precip starts to wane with the low exiting east, a northern
stream mid level trough will then bring a cold front down through
lower mi on Sunday. This will keep some chance pops around as it
runs up against the trailing moisture axis. High pressure will build
in behind the front for the start of the new week. Persistent
northeasterly flow will keep temperatures in the mid to upper 70s
through the bulk of the extended forecast.

Marine...

prevailing onshore easterly flow will remain in place through the
end of the week. Modest wave height increases will occur at times in
the nearshore zones tonight through Friday. Weak thunderstorm
chances will exist on Saturday and wind directions turn southerly
ahead of an approaching low pressure system.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Aviation... ..Cb
discussion... Drk
marine... ... .Cb
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 10 mi33 min NE 11 G 12 61°F 1013.5 hPa (+0.0)
45147 - Lake St Clair 15 mi93 min NNE 12 G 16 60°F 69°F1013 hPa (+0.8)
AGCM4 29 mi45 min 58°F 1013 hPa
THLO1 - Toledo Light No. 2 OH 38 mi43 min ENE 21 G 22 64°F
45165 47 mi33 min NNE 16 G 23 66°F 74°F3 ft59°F
SBIO1 - South Bass Island, OH 49 mi33 min NE 9.9 G 15 63°F 1011.7 hPa (+0.3)

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI8 mi40 minENE 69.00 miLight Rain60°F57°F90%1012.6 hPa
Troy, Oakland/Troy Airport, MI19 mi38 minENE 510.00 miLight Rain61°F57°F89%1013.9 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi38 minNE 710.00 miOvercast61°F59°F94%1012.5 hPa
Selfridge Air National Guard Base, MI20 mi97 minENE 710.00 miShowers in Vicinity62°F58°F88%1013 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI22 mi40 minENE 68.00 miOvercast61°F55°F84%1012.7 hPa

Wind History from DET (wind in knots)
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Last 24hrE10E10E10E6E5CalmNE4SE5SE5SE4E3E4E9NE6E7NE8NE8NE5N4NE5N4NE4NE6NE6
1 day agoW13
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N11N7N9N12SE8NE7N5N7N8N7N6N7NE9NE11
2 days ago5W5----W10
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SW10S10SW9SW5SW5SW7SW7W8W9W6SW7SW9SW10SW9W8W10
G19

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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GOES Local Image of GreatLakes    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Detroit/Pontiac, MI (9,2,3,4)
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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.