Sunday, April22, 2018 L-36.com


Marine Weather and Tides
Grosse Pointe Park, MI

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:37AMSunset 8:23PM Sunday April 22, 2018 2:10 PM EDT (18:10 UTC) Moonrise 11:22AMMoonset 1:28AM Illumination 49% 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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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 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 221725
afddtx
area forecast discussion
national weather service detroit pontiac mi
125 pm edt Sun apr 22 2018

Aviation
Surface high pressure and strong midlevel anticyclonic gyre aloft
has very stable atmospheric conditions in place over southeast
michigan. Pressure gradient has setup over the state between surface
high pressure moving into the northeast u.S. And low pressure over
the lower mississippi river valley. This easterly wind is forecasted
to persist throughout the TAF period. Northing more than some few-
sct cirrus is anticipated.

Dtw threshold probabilities
* none.

Prev discussion
Issued at 902 am edt Sun apr 22 2018
update...

as of 900 am edt... Ongoing forecast in good shape with only a few
tweaks based on the latest trends in observations. High pressure in
control again today, and with abundant sunshine, expecting an
excellent spring day across southeast michigan. High temperatures
will reach into the lower 60s for most areas, with a few mid 60s
readings not out of the question across inland areas. Closer to the
shorelines, highs will struggle to make it into the upper 40s-mid 50s
with a light easterly flow advecting a cooler marine layer across
these areas.

Prev discussion...

issued at 347 am edt Sun apr 22 2018
discussion...

surface high pressure remains in full control across the great lakes
and is set to provide an ideal spring day across SE michigan.

Plentiful sunshine will help lift high temperatures into the upper
50s to lower 60s which are at normal values for the date. Interior
sections could even see readings touch mid 60s outside of the
slightly extended lake breeze reach boosted by light easterly
gradient flow. The position of the surface high, as it becomes
centered over southern ontario during the afternoon, presents a
struggle for shoreline areas to reach 50.

The easterly gradient will strengthen slightly tonight as the closed
low moves into the mid mississippi valley. This will be enough to
maintain a 5 to 10 knot wind and keep temperatures from reaching
full radiational cooling potential overnight. The upper level ridge
centered overhead is otherwise well positioned to hold back mid and
high clouds until closer to Monday afternoon. Lows in the mid to
upper 30s will then get a boost from a mostly sunny start to the day,
and despite increasing clouds during the afternoon, expect highs in
the mid 60s to near 70 away from the lakeshore. The potential for 70
is in play due to substantial low level thickness warming as the
surface high is nudged even farther out of the great lakes toward
the atlantic coast.

The closed low will finally begin to affect lower michigan Monday
night as the northern fringe of its moisture field reaches the ohio
border. The system will be in the initial stage of opening up into
the northern stream westerlies leading to weak mid level isentropic
lift and moisture transport into SE michigan. Model soundings show
thorough saturation in the low levels after midnight in the detroit
area spreading northward to the tri cities and northern thumb
through Tuesday into Tuesday night. There is better model agreement
on the northern stream upper trough digging more aggressively into
the great lakes during this time and helping to draw moisture
northward. Guidance pops reflect that with a trend more firmly into
the chance category and seem reasonable given the low overall model
qpf. If the timing and intensity of the northern stream amplification
can hold then expect the upward trend in pops to continue for a high
pop low QPF scenario, especially Tuesday afternoon and night.

High pressure building into the great lakes Wednesday into Thursday
is shown to be mostly of pacific origin in the extended model
output. Therefore, cooler guidance temperatures in the 50s are only
slightly below normal during the second half of the week and into
next weekend. The trend in the extended 00z nwp cycle is for renewed
upper level development over the great lakes around the Friday period
with GFS and cmc solutions offering another closed low right over the
great lakes. The ECMWF favors a more progressive open wave which is
supported by the GEFS ensemble mean and moves the system through the
region early in the weekend.

Marine...

high pressure across the great lakes will continue to keep calm
conditions today as it gradually lifts just northeast of lake huron
this afternoon. The will bring light easterly winds of 10 kts or
less and calm waters across the open waters of lake huron, lake st.

Clair and western lake erie. Waves of 2 feet or less and light winds
veering out of the southeast ahead of an approaching weak low
pressure system coming from the southern us. This surface low
pressure system combined with a shortwave trough swinging through
the great lakes will bring increasing chances for precipitation and
unsettled weather on Tuesday and through mid-week.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Aviation... ..Cb
update... ... .Irl
discussion... Bt
marine... ... .Aa
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 mi71 min Calm G 1.9 50°F 1030.5 hPa (-1.0)
AGCM4 29 mi41 min 56°F 1029 hPa
THLO1 - Toledo Light No. 2 OH 38 mi31 min ENE 14 G 15 45°F
SBIO1 - South Bass Island, OH 49 mi71 min NE 16 G 20 46°F 1029.4 hPa (-0.6)

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI8 mi18 minE 8 G 1710.00 miFair58°F24°F27%1029.8 hPa
Troy, Oakland/Troy Airport, MI19 mi16 minE 410.00 miFair58°F17°F20%1030.1 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi16 minENE 710.00 miFair60°F25°F27%1028.8 hPa
Selfridge Air National Guard Base, MI20 mi75 minNNE 510.00 miA Few Clouds57°F30°F36%1030.3 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI22 mi18 minESE 410.00 miPartly Cloudy59°F26°F28%1029.4 hPa

Wind History from DET (wind in knots)
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Last 24hr5SE3SE6SE6SE6SE5S4S4CalmCalmN3CalmCalmCalmCalmCalmCalmE3E6NE7E9SE11E7E8
G17
1 day agoSE4S4SE9E8E9E8SE5E5E4E4E4CalmCalmCalmCalmCalmE3CalmE5SE4E4SE4CalmCalm
2 days ago--NW12
G21
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E12E8E6SE3CalmCalmW4W5NW4NW5NW3NW4NW4NW6N6N4Calm----N6

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 (14,3,4,5)
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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.