Friday, July21, 2017 L-36.com


Marine Weather and Tides
Hamtramck, 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 6:13AMSunset 9:03PM Friday July 21, 2017 6:51 PM EDT (22:51 UTC) Moonrise 3:22AMMoonset 6:27PM Illumination 3% 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
LCZ423 524 Pm Edt Wed Jul 19 2017
.thunderstorms approaching the waters... The areas affected include... Detroit river... Michigan waters of lake erie... At 519 pm edt...doppler radar indicated an area of showers containing isolated Thunderstorms... Capable of producing winds to up 30 knots. These Thunderstorms was located near Monroe harbor...moving east at 20 knots. Locations impacted include... Monroe harbor...detroit beach...woodland beach...stony point...bolles harbor of refuge...estral beach...luna pier...detroit river light... Lake erie metropark harbor and put-in-bay. Precautionary/preparedness actions... Mariners can expect gusty winds up to 30 knots...locally higher waves...lightning strikes...and heavy downpours. Boaters should consider seeking safe harbor until these storms have passed. && lat...lon 4173 8345 4173 8350 4180 8350 4195 8337 4196 8329 4201 8325 4218 8320 4218 8313 4212 8312 4203 8315 4196 8311 4180 8333 4172 8341 4172 8347
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ423 Expires:201707192245;;510904 FZUS73 KDTX 192124 MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 524 PM EDT WED JUL 19 2017 LCZ423-LEZ444-192245-

7 Day Forecast for Marine Location Near Hamtramck, MI
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location: 42.38, -83.04     debug


Area Discussion for - Detroit/Pontiac, MI
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Fxus63 kdtx 211921
afddtx
area forecast discussion
national weather service detroit pontiac mi
321 pm edt Fri jul 21 2017

Discussion
Upper level ridge center over near oklahoma this afternoon with the
top of the ridge flattening out over northern plains with the jet
energy tracking through, as upper level wave low over southern
alberta is on track to move through lake superior on Sunday, leading
to a cool down for early next week.

Very warm day over southeast michigan, as temperatures are pushing
toward 90 degrees, but fortunately dew pts are under 70 degrees.

Broken line of convection extending from the upper mississippi river
valley southeast into western ohio valley through much of the day
has kept the good midwest moisture bottled up west, and there is now
a clear consensus the deep moisture will be tracking through chicago
area this evening and riding along and south of the michigan border
late tonight, with MCS complex propagating toward the MAX instability
over the ohio valley, supported by corfidi vectors as low level jet
veers around to the west northwest. Bulk of heavy rain will likely
fall along and just south of the border, and with the failure of good
low level moisture transport and destabilization (12z NAM keeps
1000-850 mb CAPE under 1000 j kg) the prospects for severe storms is
very low almost nil (exception being right near southern michigan
border). This includes during the day on Saturday as well, as
southeast michigan resides in the subsidence wake of the departing
mcs and flow is out of the northwest, with continuing lack of
instability and what looks to be strong mid level cap in place (700
mb temps around -12 c per 12z euro). The 12z euro also maintains
1000-850 mb capes under 1000 j kg for the most part, but surface low
is bit deeper (1006-1007 mb) tonight, placing lenawee county is a
concerning triple point position around 12z Saturday, with 50 knots
at 850 mb, and corresponding 38 knots of 0-1 km bulk shear. Still,
based off current trends, good chance this boundary will end up being
a bit farther south.

Previous mentioned upper wave trough tracking through northern great
lakes on Sunday will bring cold front through southeast michigan
during the day, but moisture looks to be lacking to support much
more than scattered coverage, with 0-6 km bulk shear around 40 knots
drawing some concern for isolated severe storms, but mid level lapse
rates look marginal and majority of solutions still indicating
1000-850 mb capes under 1500 j kg.

Some lingering showers will be possible early on Monday as low
pressure departs the region. High pressure will then build into the
region through the day as a thermal trough swinging through keeps
Monday's highs in the mid to upper 70s. High pressure will remain in
place through Tuesday bringing pleasant and dry conditions with
highs topping out near 80 and lows in the mid 50s to near 60. The
next chance for thunderstorms returns during the midweek period as a
weak cold front drops through the region. Slightly milder, more
humid air will advect ahead of the front on Wednesday allowing highs
to increase into the mid 80s.

Marine
Light and variable winds will transition toward south to
southeasterly on lake huron Saturday morning as a frontal boundary
extends across the southern great lakes. Wind gusts will remain
below 20 knots, while waves will undergo a slight uptick during the
afternoon. Low pressure will expand across lower mi on Sunday, while
high pressure expands across quebec. This will lead to an increase
in southeast winds on lake huron Sat night into Sunday, especially
the northern half of the lake. Winds will then back to the north
Sunday night into Monday as low pressure exits to the east and high
pressure builds in from the west.

Prev discussion
Issued at 1248 pm edt Fri jul 21 2017
aviation...

southeast michigan will remain under the influence of weak high
pressure through the duration of the afternoon and evening. There is
a dome of drier air across the region associated with this high. The
result has been a decrease in sfc dewpoints. This will inhibit
diurnal CU development and will prevent any late evening or early
overnight reduction in sfc visibility. Convective redevelopment is
expected to take hold across the upper ms valley and WRN great lakes
tonight. The sfc front and instability axis is expected to remain
south of the state. Thus the more widespread convective activity
will likely pass south of detroit. There is still however a good
chance for a region of showers with some embedded thunderstorms to
develop north of the main convective complex, impacting portions of
se mi late tonight into Sat morning.

For dtw... The light flow will promote afternoon lake breeze
development. This will result in a wind shift toward the southeast
late this afternoon (21z time frame). Winds speeds with the lake
breeze will remain relatively weak (mainly under 7 knots).

Dtw threshold probabilities...

* medium for thunderstorms late tonight (after 09z) through Saturday
morning.

* medium for cigs AOB 5000 feet late tonight and Saturday.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Discussion... Sf jd
marine... ... .Sc
aviation... ..Sc
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 11 mi52 min ESE 2.9 G 4.1 80°F 1014.6 hPa (-0.3)
45147 - Lake St Clair 19 mi52 min Calm G 1.9 79°F 79°F1013.6 hPa (-0.5)
AGCM4 32 mi52 min 81°F 1014.2 hPa (-0.4)
THLO1 - Toledo Light No. 2 OH 39 mi52 min N 24
45165 48 mi32 min NNE 3.9 G 5.8 83°F 83°F1 ft68°F
THRO1 - 9063085 - Toledo, OH 53 mi52 min ENE 2.9 G 5.1 84°F 1014.3 hPa (-0.7)64°F

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI4 mi59 minSE 410.00 miFair83°F61°F48%1013.8 hPa
Troy, Oakland/Troy Airport, MI13 mi57 minN 010.00 miFair86°F60°F42%1015.2 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI19 mi59 minW 610.00 miOvercast86°F66°F53%1013.9 hPa
Selfridge Air National Guard Base, MI20 mi54 minSE 410.00 miMostly Cloudy83°F63°F51%1014.1 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi59 minS 810.00 miFair83°F70°F67%1014.2 hPa

Wind History from DET (wind in knots)
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Last 24hrNW6W4W6SW6CalmW3SW3W3W4NW4N3CalmN3NE4N6NE6N4CalmSE5SE6E6SE6SE6SE4
1 day agoSW11W8SW6NE9E7E4CalmCalmSE5SE5SE4S4S6SW8W12
G16
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W84W5NW6W13W9W7
2 days agoS8S9S7S4S5S3CalmCalmSW3N3NW3W3W3W3W3W7W5SW3W6NW5Calm--NW6NW8

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 (18,4,5,8)
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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.