Sunday, April5, 2020
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Marine Weather and Tides
Harper Woods, 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 7:04AMSunset 8:04PM Sunday April 5, 2020 12:02 AM EDT (04:02 UTC) Moonrise 4:07PMMoonset 5:08AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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- 346 Pm Edt Sat Apr 4 2020
Tonight..Light and variable winds becoming north 5 to 10 knots in the late evening and early morning...then increasing to 10 to 15 knots early in the morning. Cloudy. Waves 2 feet or less.
Sunday..North winds 10 to 15 knots diminishing to 5 to 10 knots in the afternoon. Mostly cloudy in the morning then clearing. Waves 2 feet or less.
Sunday night..Northeast winds 5 to 10 knots until early morning becoming light and variable. Mostly clear. Waves 2 feet or less.
Monday..Light and variable winds becoming southeast 5 to 10 knots in the late morning and afternoon. Partly Sunny. Waves 2 feet or less.
Monday night..Southeast winds 5 to 10 knots. Cloudy with light rain likely. Waves 2 feet or less.
Tuesday..Southeast winds 5 to 10 knots. A chance of light rain. Light rain in the evening. Waves 2 feet or less.
Wednesday..West winds 10 to 15 knots. Partly cloudy. Light rain. Waves 2 feet or less.
Thursday..West winds 15 to 20 knots. Partly cloudy. A chance of rain. Waves 2 feet or less.
LCZ460 Expires:202004050800;;572678 FZUS63 KDTX 041952 RRA GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 346 PM EDT SAT APR 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...A weak showery cold front will clear to the east by midnight. 30.30 inHg high pressure then builds in late tonight, holding through Monday morning. The next low pressure system arrives on Tuesday brining wet and stormy weather with central pressure minimizing to around 29.50 inHg. LCZ460-050800-


7 Day Forecast for Marine Location Near Harper Woods, MI
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location: 42.42, -82.99     debug


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 050354 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 1154 PM EDT Sat Apr 4 2020

AVIATION.

Advection of lower tropospheric equivalent potential temperature between 875-725mb led to drizzle and light rain shower activity across much of Southeast Michigan earlier. Substantial cold air advection between 1.0 and 3.5 kft agl has now led to blanket of MVFR overcast overnight with IFR ceilings north of the Detroit terminals. Strong model signal for dry air advection after 09Z which will lead to breakup of MVFR stratus. Mid cloud across southern Michigan will be in place early Sunday before backdoor cold/dry air advection off of Lake Huron post 21Z leads to SKC Sunday night.

For DTW . MVFR deck for all of tonight with a low potential for brief IFR. VFR skies Sunday with SKC developing after 21Z.

DTW THRESHOLD PROBABILITIES .

* High for cigs at or below 5000 ft tonight.

PREV DISCUSSION. Issued at 329 PM EDT Sat Apr 4 2020

DISCUSSION .

Quiet weather for the next several days as a rapidly weakening cold front carrying a few showers eases through the area this afternoon and tonight. Current radar presentation tells the story here just fine - a 4 to 6 hour window for episodic light showers at any one location. Average QPF well under 0.1". Zonal flow regime becomes established tonight allowing surface high pressure over the Upper MS Valley to build into Southeast Michigan during the day Sunday. Clear skies in the post-frontal environment have already expanded into eastern Wisconsin which bodes well for the sunny forecast for Southeast Michigan tomorrow afternoon. Of note, however, will be the tendency for the front to decelerate as mid-level forcing is lost and replaced by increasingly zonal flow aloft. A rather grungy start can therefore be expected to start on Sunday before drier northerly flow ushers boundary layer moisture south of the border. Under full sun, temps rebound into the low to mid 50s by late afternoon.

Zonal flow regime keeps the baroclinic zone suppressed near or south of the state line into midweek. Seasonal temperatures during this time will be accompanied by plenty of mid and high clouds ensuring a grungy pattern Monday into Wednesday. Given the proximity of the warm front to southern Michigan and fast-moving mid-level flow, a rather ill-defined chance for showers will exist as well particularly as the front bulges north in advance of digging northern stream energy late Monday into Tuesday.

MARINE .

Showers are streaming in across Lake Huron this evening associated with an eastward progressing cold front. Coverage of these showers is expected to remain more scattered in nature, especially across the southern waterways. The front clears to the east by midnight ushering in cooler and drier conditions from renewed northwest flow as a ridge translates toward the region. Surface high currently centered over Minneapolis will build into the central Great Lakes late tonight and hold through Monday morning. This will maintain a subdued and gradually veering surface wind given a relaxed pressure gradient. A few gusts to 20 knots is possible along the northern international border late tonight. A low pressure system approaches late Monday with increasing chances for rain and storms by Tuesday.

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

AVIATION . CB DISCUSSION . SF MARINE . KK

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 7 mi63 min NW 5.1 G 8.9 49°F 1017.9 hPa (+1.0)
AGCM4 28 mi45 min 48°F 40°F1017 hPa
THLO1 - Toledo Light No. 2 OH 42 mi63 min NW 11 G 12 47°F
MBRM4 - 9014090 - Mouth of the Black River, MI 49 mi51 min 39°F 1017.8 hPa

Wind History for Fort Gratiot, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI2 mi70 minNNW 510.00 miOvercast49°F44°F83%1018 hPa
Troy, Oakland/Troy Airport, MI13 mi68 minNNW 510.00 miOvercast47°F45°F94%1018.3 hPa
Selfridge Air National Guard Base, MI16 mi68 minNW 710.00 miOvercast48°F48°F100%1017.7 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI22 mi70 minNNW 87.00 miOvercast48°F44°F86%1018.1 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI24 mi68 minNNW 73.00 miDrizzle48°F46°F94%1017.3 hPa

Link to 5 minute data for KDET

Wind History from DET (wind in knots)
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Last 24hrNE4E4CalmCalmCalmCalmCalmCalmCalmSW3CalmS4SW5S7S7SW7SW5SW6W3NW7NW4NW5NW5N8
1 day agoCalmCalmCalmCalmW3CalmCalmNW3N8NE6N6N9N6N8E7
G15
SE12
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E9E6E9E8E9NE3CalmNE4
2 days agoW4W4W3W3W5NW5NW3NW4NW6NW8N10N6NW10
G16
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N5----S4CalmNE4

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 (0,6,7,8)
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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.