Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Farmington Hills, 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 7:31AMSunset 5:07PM Tuesday November 21, 2017 4:29 PM EST (21:29 UTC) Moonrise 10:05AMMoonset 7:47PM 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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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 Farmington Hills, MI
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location: 42.51, -83.35     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 211957
afddtx
area forecast discussion
national weather service detroit pontiac mi
257 pm est Tue nov 21 2017

Discussion
Cold front will surge through area late this afternoon early this
evening. Lift from upper trough forcing this front aided to some
degree by right entrance region of h25 jet streak lifting up east
side of the trough will maintain a band of rain showers along and
immediately behind this front. Cold air advection will be strong
enough to allow for some of this precipitation to chance to snow,
either mixed with the rain or becoming snow showers outright. With
generally light precipitation rates and boundary layer temperatures
in the mid to upper 30s, do not expect any accumulations before the
precipitation ends abruptly in the 22z-02z time frame from north to
south across the forecast area.

Colder air will settle into the area behind this front, with lows in
the low mid 20s tonight and highs no better than the middle 30s on
Wednesday as the core of this cold airmass settles over the central
great lakes. That said, winds will decrease notably as compared to
the past few days, so the "chill" factor will not be as persistent.

A moderation in temperatures will ensue from Wednesday night into
Thursday night as main upper troughing progresses off to the east.T
this process will initially be rather slow as another (weaker)
shortwave pivots into the area and maintains some degree of upper
troughing. This should lead to a progression of temperatures from
the middle 20s once again Wednesday night, rebounding to upper 30s
to around 40 Thursday afternoon, but falling back into the mid upper
20s Thursday night.

Precipitation, after early this evening, will be basically nil with
perhaps a small chance of snow showers again for at least portions
of the area late Thursday night as a stronger warm air advection
pattern begins to set up in advance of the next strong shortwave
that will be dropping out of the gulf alaska region mid late week.

Marine
A cold front sweeping across the region will bring gusty northwest
winds across the eastern lakes in it's wake this evening through
tonight. The switch from southwest flow to northwest flow has
already begun as the front currently resides over central lake huron
and saginaw bay. The front will pass south of lake erie later this
evening with a secondary trough and cold surge lagging a few hours
behind. Cold air funneling into the region with a tight pressure
gradient will lead to a period of northwest gales across northern
lake huron through most of the overnight period. Slightly weaker
winds across southern huron will not necessitate gales, but small
craft advisories are in effect for a portion of the nearshore waters
around the thumb mainly due to elevated wave heights. Lake-effect
snow showers will be common in the cold air behind the front. Winds
will relax early Wednesday morning as high pressure builds into the
region.

Prev discussion
Issued at 1229 pm est Tue nov 21 2017
aviation...

a cold front will sweep through SE mi this afternoon bringing with
it increasing cloud cover and a brief window of light precipitation.

The front is current dropping into mid mi with a surge of moisture
ahead of it now nosing into mbs. Better frontal forcing will be
further south likely keeping mbs dry, but the rest of the sites will
have about a 2 hour window where showers will be possible. Rain will
be the dominate precip type, but as colder air begins moving in,
some wet snowflakes may be possible as well. Front will exit the
area around 00z. Winds will veer from southwesterly to westerly for
a few hours before veering further to northwesterly. Gusts will
relax in the wake of the front with winds overall decreasing below
10 knots Wednesday. How fast clouds clear out in the wake of the
front will be one of the main forecast decisions.

For dtw... Gusts to 25 knots from the southwest will continue into
the evening until the cold front passes. The cold frontal wind shift
to westerly is expected around 21z and a full shift to northwesterly
around 00z - which may flirt with traffic flow considerations before
gusts relax. Window of rain showers still expected this afternoon for
a couple hours with some wet snowflakes mixing in toward the tail
end. Ground temperatures will remain above freezing.

Dtw threshold probabilities...

* high confidence in cigs AOB 5000 feet after 20z today... Low
after 03z.

* moderate confidence in precip type falling as a rain transitioning
to melting snow late this afternoon into this evening.

Dtx watches warnings advisories
Mi... None.

Lake huron... Gale warning until 10 pm est this evening for lhz361.

Gale warning until 4 am est Wednesday for lhz362.

Small craft advisory until 1 pm est Wednesday for lhz441.

Small craft advisory until 5 am est Wednesday for lhz421.

Lake st clair... None.

Michigan waters of lake erie... None.

Discussion... Dg
marine... ... .Drk
aviation... ..Drk
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 25 mi29 min SW 11 G 15 49°F 1009.5 hPa (+2.4)
AGCM4 44 mi41 min 47°F 1008 hPa
THLO1 - Toledo Light No. 2 OH 48 mi39 min WSW 17 G 19 46°F
THRO1 - 9063085 - Toledo, OH 57 mi41 min W 14 G 19

Wind History for Toledo, OH
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SW10
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G19
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G23
SW11
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W15
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G19
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G22
SW15
G28
2 days
ago
W15
G22

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Troy, Oakland/Troy Airport, MI9 mi34 minWNW 11 G 1610.00 miLight Rain48°F37°F65%1009.5 hPa
Pontiac, Oakland County International Airport, MI12 mi36 minW 17 G 2210.00 miLight Rain43°F37°F82%1009.5 hPa
Coleman A Young Municipal Airport, MI18 mi36 minWSW 1110.00 miOvercast49°F32°F52%1009.1 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI19 mi36 minWSW 1310.00 miOvercast49°F33°F55%1009.8 hPa
Detroit, Willow Run Airport, MI22 mi36 minWSW 1110.00 miLight Rain49°F35°F59%1009.7 hPa

Wind History from VLL (wind in knots)
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Last 24hrS14
G22
SW13
G22
S10
G18
S10
G15
S12
G18
SW17
G22
SW13
G20
SW13
G19
SW13
G20
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G19
S11
G21
SW13
G20
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G17
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G18
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G22
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G23
SW10
G21
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G17
SW11
G21
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SW6W8
G14
1 day agoW9
G15
W15
G24
W11
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W13
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G14
W7SW4SW4SW7SW6SW7SW7S9SW8SW8SW8
G14
SW9
G16
SW11SW11S14
G22
SW16
G21
SW12
G19
SW14
G23
S9
G19
2 days agoN9
G20
N12
G22
NW8NW13
G21
NW13
G22
NW14
G19
NW10
G19
NW19
G26
NW16
G23
NW13
G23
NW17
G21
NW12
G22
W11
G20
W17
G23
W12
G19
W13
G16
W10
G14
W8
G17
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G16
W14
G20
W11
G17
W12
G17
NW10
G16
W10

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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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.