Tuesday, August11, 2020
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Marine Weather and Tides
Harbor Beach, 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 6:30AMSunset 8:38PM Tuesday August 11, 2020 3:05 PM EDT (19:05 UTC) Moonrise 11:36PMMoonset 1:21PM Illumination 47% Phase: Third Quarter Moon; Moon at 22 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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LHZ441 Port Austin To Harbor Beach Mi- 948 Am Edt Tue Aug 11 2020
Rest of today..Northwest winds 5 to 10 knots. Partly cloudy late in the morning then clearing. Waves 2 feet or less.
Tonight..Southwest winds 5 to 10 knots. Clear. Waves 2 feet or less.
Wednesday..Southwest winds 5 to 10 knots until late afternoon becoming light and variable. Sunny. Waves 2 feet or less.
Wednesday night..Light and variable winds. Clear. Waves 2 feet or less. SEe lake huron open lake forecast for days 3 through 5.
LHZ441 Expires:202008112115;;283530 FZUS53 KDTX 111348 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 948 AM EDT Tue Aug 11 2020 For waters within five nautical miles of shore 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. LHZ441-112115-


7 Day Forecast for Marine Location Near Harbor Beach, MI
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location: 43.84, -82.65     debug


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 111609 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 1209 PM EDT Tue Aug 11 2020

AVIATION.

A cold front is exiting southeastern Michigan and so is the sct-bkn mvfr ceilings accompanying it. Drier air filtering in behind on a northwesterly flow 10kts or less will lead to clear to few afternoon CU above 4kft. High pressure will move in overnight and continue over the area Wednesday. This will lead to mainly clear skies with light variable winds after sunset. Winds will remain light on Wednesday with an easterly marine flow developing across the southern terminals during the day and a southwesterly across the northern terminals.

DTW THRESHOLD PROBABILITIES.

None

PREV DISCUSSION. Issued at 353 AM EDT Tue Aug 11 2020

DISCUSSION .

A stray shower remains possible over the Tri Cities and Thumb region leading up to sunrise. This is where the western flank of the fully mature MCV has left to brush through coincident with the cold front. Subsidence trailing the circulation combined with incoming confluent flow aloft is expected to prevent any development farther south as the front settles slowly toward the Ontario and Ohio borders. Noticeably less humid air moves into the Tri Cities and Thumb by early afternoon but takes until later in the day before reaching metro Detroit southward. Considerable coverage of low clouds to start the day breaks up during late morning to early afternoon in time to allow high temperatures in the lower to mid 80s.

High pressure gains traction over the Great Lakes tonight bringing clear sky, light wind, and pleasant temperatures settling to lows in the upper 50s outside of metro Detroit. This kicks off a stretch of favorable weather anchored by high pressure lasting through the mid and late week period. Zonal flow aloft extends from the Pacific NW along the Canadian border to the Great Lakes today. It develops just enough ridging over central Canada and the upper Midwest for maintenance of Great Lakes high pressure Wednesday into Thursday. There is also a boost of subsidence provided by the ridge downstream of the short wave shown developing over the central Plains. This small scale feature has been advertised in model solutions over the last several forecast cycles but with nebulous west coast origins. It stalls over the mid MS valley and Midwest during Thursday as large scale height falls get underway over the Canadian Rockies which leads to even more downstream ridging across northern Ontario. The resulting broadening of surface high pressure centered on Quebec then extends back into the Great Lakes providing stable easterly flow into SE Mi through Friday. A wave of low pressure and associated cold front is then shown in extended model solutions making progress into the Great Lakes by Saturday. Moisture and instability parameters suggest this system brings the next chance of showers and thunderstorms to lower Mi Saturday into Sunday.

MARINE .

Light northwesterly flow today gives way to light and variable winds as high pressure builds in from the west tonight and Wednesday. Any lingering showers associated with the early morning frontal passage diminish by afternoon. This leaves dry weather and favorable boating conditions in place as high pressure builds overhead and lasts through late week.

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

AVIATION . DRC DISCUSSION . BT MARINE . MV

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
HRBM4 - 9075014 - Harbor Beach, MI 1 mi47 min N 8.9 G 12 73°F 72°F1012.9 hPa61°F
KP58 15 mi14 min NW 5.1 79°F 1012.5 hPa56°F
PSCM4 30 mi125 min NW 5.1 G 7 75°F 1031.5 hPa (+1.7)
45008 - S HURON 43NM East of Oscoda, MI 33 mi25 min W 7.8 G 9.7 71°F 71°F1013.1 hPa66°F
45149 - Southern Lake Huron 37 mi125 min NNW 12 G 14 72°F 72°F2 ft1012.9 hPa (+1.7)
GSLM4 - Gravelly Shoals Light MI 49 mi25 min WSW 8.9 G 11 77°F
TAWM4 - Tawas City, MI 51 mi25 min WNW 8 G 13 81°F 1013.9 hPa

Wind History for Harbor Beach, MI
(wind in knots)    EDIT      (on/off)   Help
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SE14
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SE15
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G14
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G17
W6
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W6
S14
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SE17

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Hope, MI15 mi74 minNW 7 mi78°F57°F48%1012.5 hPa
Huron County Memorial Airport, MI18 mi70 minNNW 810.00 miFair79°F51°F39%1013.9 hPa

Link to 5 minute data for KP58

Wind History from P58 (wind in knots)
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Last 24hrSE8E10NW6CalmE5CalmCalmSE4S4S44CalmNW10
G19
Calm3NW44CalmNW6NW9
G16
NW8NW9
G16
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1 day agoCalmCalmE3--CalmCalmS3CalmCalm3Calm33SW334SW6SW5SW5SW5SW7SW74SW4
2 days agoSE75
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SW76343Calm4SW76SW5
G19
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SW7SW8
G15
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G18
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5W5E3

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 (15,3,4,5)
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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 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.