Wednesday, October18, 2017 L-36.com


Marine Weather and Tides
Grosse Pointe Farms, 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 7:47AMSunset 6:45PM Wednesday October 18, 2017 4:35 PM EDT (20:35 UTC) Moonrise 5:24AMMoonset 5:36PM Illumination 2% Phase: Waning Crescent; Moon at 28 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 /o.can.kdtx.ma.w.0056.000000t0000z-171015t1730z/ 111 Pm Edt Sun Oct 15 2017
.the special marine warning is cancelled... The affected areas were... Lake st. Clair open lake (u.s. Portion)... St. Clair river... The Thunderstorms have moved out of the area and no longer pose a significant threat to boaters. Lat...lon 4260 8254 4255 8259 4256 8264 4238 8282 4235 8293 4237 8300 4239 8295 4244 8291 4254 8291 4259 8285 4266 8285 4272 8269 4270 8261 4265 8259 4264 8256 4276 8251 4283 8251 4283 8247 4276 8247 time...mot...loc 1709z 271deg 36kt 4276 8242 4240 8263
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ422 Expires:201710151721;;908498 FZUS73 KDTX 151711 MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 111 PM EDT SUN OCT 15 2017 LCZ422-460-151721-

7 Day Forecast for Marine Location Near Grosse Pointe Farms city, MI
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location: 42.4, -82.89     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 181908
afddtx
area forecast discussion
national weather service detroit pontiac mi
308 pm edt Wed oct 18 2017

Discussion
Southwest gradient and full insolation once again supporting warm
temperatures this afternoon. Boundary layer will remain mixed
through tonight as the approaching front attendant to the cyclone
over central canada approaches from the west and ensures overnight
lows are contained to values no lower than this morning's obs. Cold
fropa early Thursday morning will occur uneventfully given se
michigan's removal from dynamic forcing and dry antecedent
conditions. Minor suppression of the thermal field will primarily
influence the northern half of the cwa, where highs will be a few
degrees cooler than today in the mid 60s. Near 70 again across the
south. Return flow will quickly get underway Thursday night into
Friday as high pressure becomes reestablished over the appalachians
in response to pattern amplification driven by an surging npac
energy out west. Highs Friday once again near 70 under cloudless
skies.

The pattern for Saturday and most of Sunday will remain largely
unchanged from that of the late half of the week, with surface and
upper ridging leading to dry conditions with above normal
temperatures in the low 70s.

The energy that lead to the digging trough in the western CONUS and
amplified ridge for SE michigan most of this week will begin to
impact us late Sunday into Monday. Ample moisture ahead of the
surface front will lead to a decent chance for showers overnight
Sunday. Cooler air will begin to filter in behind the front; highs
Monday into the mid 60s and a lingering chance of showers.

Following this front on Tuesday into Wednesday, an upper trough will
dig through the great lakes and much of the eastern conus. This will
lead to the coolest temperatures of the season so far, highs falling
to the upper 40s and lower 50s by Wednesday, with generally
unsettled conditions and a chance for showers through midweek.

Marine
Small craft advisories across the saginaw bay will persist this
afternoon and likely overnight as southwest winds continue to gust
between 20 - 25 kts, isolated 30 kt, across the bay. Winds and wind
gusts will start to relax throughout Thursday morning as the
pressure gradient weakens, which will hold wind gusts to sub-20
knots through the remainder of the week. Additionally, high pressure
will hold steady through Saturday, bringing relaxed waves over the
bay and shorelines, along with copious amounts of sunshine.

Prev discussion
Issued at 1250 pm edt Wed oct 18 2017
aviation...

a broad surface high pressure system in association with very dry
low to mid-levels will continue to promote skc conditions through
the afternoon and evening. Additionally, a strong low pressure
systems situated and moving east across manitoba into ontario will
continue to promote southwesterly winds, with diurnal mixing
producing gusts between 20 - 25 kts during daylight hours.

During the mid to late morning hours, a weak cold front will then
push through michigan, veering winds from SW to wsw. Conditions will
remain too dry for any precipitation to form, however, there may be
enough low-level forcing to produce a bkn cloud deck at 2.5 - 3 kft
over mbs as the front quickly pushes through. Weaker forcing across
the metro airports will bring the possibility to see high cirrus
during the morning hours.

Dtw threshold probabilities...

* none.

Dtx watches warnings advisories
Mi... None.

Lake huron... Small craft advisory until 10 am edt Thursday for lhz421-422-441.

Lake st clair... None.

Michigan waters of lake erie... None.

Discussion... Jvc tf
marine... ... .Am
aviation... ..Am
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 5 mi36 min S 12 G 18 67°F 1021 hPa (-2.7)
45147 - Lake St Clair 11 mi96 min SW 14 G 18 62°F 59°F1021.2 hPa (-3.0)
AGCM4 25 mi48 min 64°F 1020.8 hPa
THLO1 - Toledo Light No. 2 OH 43 mi46 min S 13 G 13 67°F
MBRM4 - 9014090 - Mouth of the Black River, MI 47 mi48 min 66°F 1019.7 hPa
FTGM4 - 9014098 - Fort Gratiot, MI 49 mi48 min SSW 8.9 G 12 66°F 1019.7 hPa42°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, MI7 mi43 minSSW 1310.00 miFair67°F43°F42%1020.8 hPa
Selfridge Air National Guard Base, MI15 mi98 minSSW 1210.00 miFair68°F43°F42%1021.2 hPa
Troy, Oakland/Troy Airport, MI18 mi41 minSSW 10 G 1910.00 miFair69°F37°F32%1021 hPa

Wind History from DET (wind in knots)
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Last 24hrSW12
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SW12SW9SW7SW10SW7SW6SW9SW9SW7SW7SW5SW5SW6SW6SW6SW8SW10S9S11
G18
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G18
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1 day agoCalmE4CalmS3S4S3S4S3SW3SW7SW5SW9SW7SW8SW6SW8SW9SW11SW12SW13
G19
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2 days agoW17
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G24
N7
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NW7NW9
G16
NW7NW4NW3CalmCalmNW4NW4W3NW5N7N7N73CalmCalm3

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.