Friday, July3, 2020
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Marine Weather and Tides
Port Huron, 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 5:54AMSunset 9:13PM Friday July 3, 2020 10:50 PM EDT (02:50 UTC) Moonrise 7:03PMMoonset 3:22AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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LHZ443 Port Sanilac To Port Huron Mi- 940 Pm Edt Fri Jul 3 2020
Rest of tonight..North winds 5 to 10 knots. Mostly clear. Waves 2 feet or less.
Saturday..North winds 5 to 10 knots. Mostly Sunny. Waves 2 feet or less.
Saturday night..North winds 5 to 10 knots until early morning becoming light and variable. Clear. Waves 2 feet or less.
Sunday..Light and variable winds becoming east 5 to 10 knots early in the afternoon. Mostly Sunny. Waves 2 feet or less. SEe lake huron open lake forecast for days 3 through 5.
LHZ443 Expires:202007040915;;277956 FZUS53 KDTX 040140 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 940 PM EDT Fri Jul 3 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. LHZ443-040915-


7 Day Forecast for Marine Location Near Port Huron, MI
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location: 43.04, -82.35     debug


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 032301 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 701 PM EDT Fri Jul 3 2020

AVIATION.

Diurnal convection associated with lake breeze boundary interactions will linger for an hour or so into the forecast, but avoid terminals and just provide an hour or two of lower VFR cigs at times. Do not expect a repeat of isolated convection on Saturday as high pressure builds back into the area. This will lead to mainly clear conditions and light northeast flow peaking 5-10 knots in the afternoon.

DTW THRESHOLD PROBABILITIES .

* Low for ceilings of 5000 feet or less through 01z or so.

PREV DISCUSSION. Issued at 343 PM EDT Fri Jul 3 2020

DISCUSSION .

At the forefront is the possible development of convection this afternoon as a mid level wave dropping south through lower MI provides a backdrop for lake breezes to initiate storms. 12Z DTX sounding shows a very warm and fairly dry airmass although moisture has been increasing over the last couple days with PWATs up to 1.2 inches now and sfc dewpoints in the mid 60s. Convergence along lake breezes will utilize this moisture while the mid level wave and strong diurnal heating will attempt to break the cap with up to 2500 J/kg SBCAPE per 18Z SPC mesoanalysis. With the lack of strong support from CAMS in generating storms, will continue to message isolated storms possible this afternoon for a few hours mainly along these lake breezes as they move well inland.

Moving forward, there will be some adjustments to the longwave pattern that had been blocked for several days, but it won't be enough to break us out of the current heat wave we're experiencing. The amplification to the pattern will be muted some as the deep west coast trough pulls back north toward Canada and a series of waves works across southern Canada, though keeping mainly north of the Great Lakes at least through the weekend. This retreat will allow the subtropical ridge to spread across most of the southern states keeping the warm pattern over the conus going. Meanwhile, the upper level ridge axis over the Plains will release eastward, crossing MI Monday. Though the series of waves will slowly suppress heights locally, flow will become more westerly which will continue to advect warm air into the region keeping the potential for 90 degree days going through the forecast. Some indications for one of these stronger waves to cause 588+dam heights to build back into the region mid week which could bring temps into mid 90s. West/Southwesterly return flow will bring increasing moisture and thus humidity next week as well. Precipitation chances return Tuesday with low chances nearly each day as shortwaves track closer to the area.

MARINE .

A ridge of high pressure remains firmly over the Great Lakes region and will continue to hold through the weekend. Favorable marine conditions continue through the beginning of next week. Mainly dry conditions will prevail, with only a slight chance to see some pop up thunderstorms this afternoon/evening, confined to the nearshore and locations inland.

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

AVIATION . DG DISCUSSION . DRK 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
FTGM4 - 9014098 - Fort Gratiot, MI 4 mi51 min N 7 G 9.9 72°F 1014.5 hPa (+0.5)68°F
MBRM4 - 9014090 - Mouth of the Black River, MI 6 mi51 min 73°F 1014.7 hPa (+0.5)
PSCM4 28 mi51 min N 8.9 G 11 72°F 1033.9 hPa (+0.7)
AGCM4 30 mi51 min 76°F 69°F1015.3 hPa (+0.8)
45149 - Southern Lake Huron 38 mi51 min N 9.7 G 12 69°F 1 ft1015.2 hPa (+0.4)
45147 - Lake St Clair 46 mi51 min NNE 7.8 G 14 78°F1 ft1013.7 hPa (+1.0)
CLSM4 - St. Clair Shores, MI 48 mi51 min NNE 11 G 13 78°F 1015.6 hPa (+1.0)

Wind History for Fort Gratiot, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Clair County International Airport, MI13 mi56 minN 010.00 miFair72°F66°F83%1015.9 hPa

Link to 5 minute data for KMTC

Wind History from MTC (wind in knots)
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Last 24hrS4SW5SW7SW5W7W5W4NW4NW5NW7N6N7NW6N7N10NE7E6E6E8NE6NE12NE7NE7NE6
1 day agoE4CalmCalmCalmNW3NW5W4CalmCalmCalmNW4N6NE6E6E7E7SE6S6SE5SE4S9S5S6SW5
2 days agoCalmCalmCalmCalmCalmN4CalmN3N3N3N3CalmE5E6E3E4E7E6NE6E7NE8NE7NE6NE4

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 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Detroit/Pontiac, MI (22,6,7,8)
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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.