Saturday, July4, 2020
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Marine Weather and Tides
Grosse Pointe Farms, MI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:58AMSunset 9:13PM Saturday July 4, 2020 8:44 PM EDT (00:44 UTC) Moonrise 8:05PMMoonset 4:16AM Illumination 100% Phase: Full Moon; Moon at 14 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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LCZ460 Lake St Clair- 931 Am Edt Sat Jul 4 2020
Rest of today..Northeast winds 5 to 10 knots. Mostly Sunny. Waves 2 feet or less.
Tonight..Northeast winds 5 to 10 knots until early morning becoming light and variable. Clear. Waves 2 feet or less.
Sunday..Light and variable winds. Sunny. Waves 2 feet or less.
Sunday night..Light and variable winds. Clear. Waves 2 feet or less.
Monday..Light and variable winds becoming southeast 5 to 10 knots in the afternoon and evening. Mostly clear. Waves 2 feet or less.
Tuesday..Southwest winds 5 to 10 knots. Mostly clear. Waves 2 feet or less.
Wednesday..South winds 5 to 10 knots. Partly cloudy. A chance of showers and Thunderstorms. Waves 2 feet or less.
LCZ460 Expires:202007042000;;303374 FZUS63 KDTX 041349 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 931 AM EDT SAT JUL 4 2020 Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...High pressure averaging 30.00 inches remains anchored across the Great Lakes region. This will result in favorable boating conditions through the weekend. LCZ460-042000-


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


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 042338 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 738 PM EDT Sat Jul 4 2020

AVIATION.

High pressure will maintain mainly clear skies through the forecast period with just a few diurnal cumulus on Sunday afternoon. Winds will be light and northeast into tonight and swing to the south to southwest as the center of high pressure settles a bit south. Speeds to remain 5 to 10 knots.

DTW THRESHOLD PROBABILITIES .

* None

PREV DISCUSSION. Issued at 336 PM EDT Sat Jul 4 2020

DISCUSSION .

The heat will continue to be the main story for this forecast package and maybe looking through most of the month. Dry and stable air has advected into southeast Lower MI today. Besides a few diurnal cumulus and a band of cirrus moving southeast this evening, expect clear skies tonight. With the dry air in place, low temps tonight should cool close to averages for early July providing the only reprieve to the heat between July 2 and maybe Friday with decent thunderstorm chances. Thinking the guidance numbers for tonight are a bit too cool given the short night and biases that those guidance numbers have shown.

The dry air should warm quickly on Sunday as the flow turns to the south. With full sunshine and 850 mb temps at least as warm as today, should see the temperatures a few degrees warmer. Heat indices will continue to run lower than the temp given the dry air and preclude any heat headlines.

Heat headlines will likely be needed Monday through Thursday as the consecutive days of 90+ have a cumulative effect along with a slow increasing dew point each day. Temperatures will also be slowly increasing each day as 850 mb temperatures warm to a peak of around +21C on Thursday.

Will be leaning toward the ECMWF output for the chances of thunderstorms each day Monday through Friday. Thinking the trends of being on the low end of the POPs is right way to go. The Tuesday afternoon and evening wave weakens as it moves into the ridge so nothing higher than a 20 percent chance. Not much moisture or forcing until we get to the main wave Thursday night and Friday.

MARINE .

A ridge of high pressure remains firmly over the Great Lakes region and will continue to hold through this weekend. Favorable marine conditions last through the weekend and beginning of next week with light winds and dry weather.

DTX WATCHES/WARNINGS/ADVISORIES. MI . NONE. Lake Huron . NONE. Lake St Clair . NONE. Michigan waters of Lake Erie . NONE.

AVIATION . DG DISCUSSION . RBP MARINE . KDK

You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLSM4 - St. Clair Shores, MI 5 mi45 min NE 8 G 8.9 79°F 1015.2 hPa (-1.4)
45147 - Lake St Clair 11 mi45 min NNE 5.8 G 7.8 77°F1 ft1014.2 hPa (-1.1)
AGCM4 25 mi57 min 81°F 70°F1015.2 hPa
THLO1 - Toledo Light No. 2 OH 43 mi165 min ESE 8.9 G 8.9 84°F
MBRM4 - 9014090 - Mouth of the Black River, MI 47 mi57 min 81°F 1014.7 hPa
FTGM4 - 9014098 - Fort Gratiot, MI 49 mi57 min N 6 G 6 73°F 1014.4 hPa63°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 mi52 minE 710.00 miFair82°F54°F38%1014.8 hPa
Selfridge Air National Guard Base, MI15 mi49 minENE 710.00 miFair80°F53°F40%1015 hPa
Troy, Oakland/Troy Airport, MI18 mi50 minNE 510.00 miFair87°F50°F28%1015.9 hPa

Link to 5 minute data for KDET

Wind History from DET (wind in knots)
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Last 24hrE6NE7NE8NE4N4NE4NE6NE6N3N7NE5N4N445E7E12
G19
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1 day agoS5S3S3SW3SW3W4W6W3W3W3NW3N3N4NW3N6NW666E10--E10SE8SE6E9
2 days agoE6E6E4CalmCalmCalmCalmN3CalmNW4NW3N4N4NW53SE6SE8SE7SE5SE55S7S5S5

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Detroit/Pontiac, MI (20,4,5,8)
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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 numerous 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.