Friday, July28, 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 6:19AMSunset 8:56PM Friday July 28, 2017 9:06 AM EDT (13:06 UTC) Moonrise 11:06AMMoonset 11:07PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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
    EDIT      (on/off)   Help
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ422 903 pm edt Sun jul 23 2017 a marine weather statement has been issued for the following areas... St. Clair river... At 903 pm edt...doppler radar indicated a strong Thunderstorm... Capable of producing winds to up 30 knots. This Thunderstorm was located near algonac...moving southeast at 20 knots. Locations impacted include... Algonac...new baltimore...st clair flats old channel light...st. Clair and mt clemens harbor of refuge. Precautionary/preparedness actions... Mariners can expect gusty winds up to 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4267 8251 4261 8252 4259 8255 4265 8263 4267 8262 4268 8263 4267 8265 4269 8268 4271 8267 4270 8261 4265 8259 4264 8256 4273 8252 4272 8248
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ422 Expires:201707240130;;729980 FZUS73 KDTX 240103 MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 903 PM EDT SUN JUL 23 2017 LCZ422-240130-

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


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kdtx 281105
afddtx
area forecast discussion
national weather service detroit pontiac mi
705 am edt Fri jul 28 2017

Aviation
Cold core upper level low tracking through southeast michigan today,
but moisture is lacking, and probably struggling to generate
ceilings below 5000 feet, much less showers or thunderstorms. If an
isolate shower or thunderstorm were to develop, would probably be in
the vicinity of the southern TAF sites, but mention will be left out
of TAF forecast. Northeast winds around 15 knots are expected during
the day, decreasing to around 5 knots tonight under clear skies.

Dtw threshold probabilities...

* low for cigs AOB 5kft today.

* very low for thunderstorm this afternoon.

Prev discussion
Issued at 350 am edt Fri jul 28 2017
discussion...

a cooler and drier environment now entrenched across southeast
michigan, this transition sustained via persistent low level
northeast flow immediately downstream of building high pressure.

Strong mid level circulation remains forecast to rapidly transit the
region during the daylight period. The underlying DCVA and cold
pool dynamics tied to this system will present at least a low
probability for convective development, particularly with
southeastward extent. However, the high degree of deep layer drying
certainly casts doubt on the prospects of seeing a greater response.

Recent hi-res guidance suggest the greater potential will reside
just to the south and east, where some localized convergence may
capitalize on a weakly unstable late day environment - MLCAPE below
500 j kg. Ultimately, looking at a limited window for possible low
end coverage during the early-mid afternoon period, before renewed
mid level drying overwhelms a marginally moist cloud layer.

Afternoon temperatures will arrive on the cooler side of average,
with readings broadly distributed across the 70s - coolest in the
thumb given the onshore flow.

High pressure will remain anchored over the northern great lakes
throughout the upcoming weekend. The presence of deep layer
subsidence and persistent north to northeast low level flow ensures
dry and stable conditions will hold throughout the period. Plenty
of sunshine and lower humidity will yield pleasant summertime
conditions for the last weekend in july.

Sprawling high pressure will remain tucked beneath low amplitude and
loosely organized upper level northwest flow during the early next
week. Gradual airmass modification under slowly building heights
will bring highs back into the lower and middle 80s during this
time. Dry conditions will hold, reinforced by transient shortwave
ridging through Tuesday. As height falls begin to carve out a
broader longwave trough across southern canada, this may allow a
frontal boundary to ease into the region by Wednesday Thursday. Next
shot for rainfall during this time.

Marine...

moderate northeast flow between 20 to 25 knots will develop over the
nearshore waters today, and small craft advisories remain in effect,
as significant wave heights up to five feet and maximum wave heights
near seven feet are expected over the southern lake huron basin.

Northeast winds will be lighter tomorrow, and very light on Sunday
as high pressure settles overhead.

Dtx watches warnings advisories
Mi... Beach hazards statement through this evening for miz049-055-063-083.

Lake huron... Small craft advisory until 4 am edt Saturday for lhz421-422-441>443.

Lake st clair... Small craft advisory from noon today to midnight edt tonight for
lcz460.

Michigan waters of lake erie... Small craft advisory from noon today to 4 am edt Saturday for
lez444.

Aviation... ..Sf
discussion... Mr
marine... ... .Sf
you can obtain your latest national weather service forecasts online
at

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45147 - Lake St Clair 2 mi67 min NE 14 G 16 67°F 72°F1013.1 hPa (+0.8)
CLSM4 - St. Clair Shores, MI 11 mi67 min NNE 15 G 16 68°F 1014.2 hPa (+0.7)
AGCM4 13 mi49 min 66°F 1014 hPa
MBRM4 - 9014090 - Mouth of the Black River, MI 38 mi49 min 68°F 1014.2 hPa
FTGM4 - 9014098 - Fort Gratiot, MI 40 mi49 min ENE 17 G 20 68°F 1014.5 hPa60°F

Wind History for Fort Gratiot, MI
(wind in knots)    EDIT      (on/off)   Help
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last
24hr
N4
NE4
NE3
NE3
NE6
NE6
N13
N13
N16
N11
N15
N16
N17
N18
NE17
NE20
NE19
NE17
NE13
NE15
NE13
G17
NE13
G16
NE18
NE17
1 day
ago
S8
G11
S7
S8
S8
G15
S12
G16
SW11
G18
SW9
G17
SW10
G14
SW3
G7
S4
G8
S4
S5
SW5
G9
S5
G9
SW4
G8
SW8
G11
SW4
G9
W7
G10
S5
SW7
G10
SW5
SW5
SW4
SW5
2 days
ago
NE17
NE16
NE13
G16
NE12
N10
G13
N10
G13
N9
N10
NE9
N7
NE7
NE6
E6
SE4
S4
S6
S8
G12
SW3
G9
S6
G9
S3
G8
SW4
S6
S5
G8
S7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Selfridge Air National Guard Base, MI14 mi69 minN 710.00 miOvercast65°F62°F91%1013.7 hPa
Coleman A Young Municipal Airport, MI19 mi74 minNNE 810.00 miFair66°F61°F84%1013.6 hPa

Wind History from MTC (wind in knots)
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
Last 24hrW2N4N8NE6NE7E6E7NE7N10NE12N10NE7NE7N7N6N6N4N6N5N5N5N6N7NE8
1 day agoS8SW5S7S12S12S104S8SE8S8SE5SE7S8S7S3S6S4CalmS5CalmCalmCalmW2SW3
2 days agoN8N10NE6NE7E8E7E7E7E6SE4S3S5CalmSE5SE6S7SE8SE7S6S6S5S7SE7S9

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Detroit/Pontiac, MI (9,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Detroit, MI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.