Tuesday, September22, 2020
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Marine Weather and Tides
Marysville, MI

Version 3.4 		NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:16AMSunset 7:27PM Tuesday September 22, 2020 7:41 AM EDT (11:41 UTC) Moonrise 12:35PMMoonset 9:59PM Illumination 27% Phase: Waxing Crescent; Moon at 5 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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LCZ422 253 Am Edt Mon Sep 7 2020
.thunderstorms approaching the waters... The areas affected include... St. Clair river... Lake st. Clair... Detroit river... Michigan waters of lake erie... At 252 am edt, doppler radar indicated Thunderstorms, capable of producing winds to up 40 knots. These Thunderstorms were located along a line extending from near new baltimore to near the ambassador bridge to 23 nm west of luna pier, moving east at 45 knots. Strong Thunderstorms will be near, the ambassador bridge, new baltimore, st clair flats old channel light and wyandotte around 300 am edt. Algonac, st. Clair and belle isle around 305 am edt. Grosse pointe around 310 am edt. Luna pier around 325 am edt. Bolles harbor of refuge and north cape around 330 am edt. Monroe harbor, detroit beach and woodland beach around 335 am edt. Stony point and estral beach around 340 am edt. Detroit river light around 345 am edt. Other locations impacted by strong Thunderstorms include woodland beach, stony point, gibraltar, estral beach and detroit beach. Precautionary/preparedness actions... Mariners can expect gusty winds up to 40 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4173 8350 4194 8338 4197 8328 4226 8317 4233 8311 4239 8295 4266 8285 4272 8269 4270 8261 4265 8255 4289 8252 4299 8243 4261 8252 4254 8266 4238 8282 4230 8309 4205 8315 4196 8311 4172 8341
LCZ422 Expires:202009070830;;440060 FZUS73 KDTX 070653 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 253 AM EDT Mon Sep 7 2020 LCZ422-423-460-LEZ444-070830-

7 Day Forecast for Marine Location Near Marysville, MI
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location: 42.91, -82.48     debug

Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 220938 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 538 AM EDT Tue Sep 22 2020

AVIATION.

Passage of an elevated front and weak upper-level disturbance will produce some mid to high level clouds that will spread across the terminals this morning and afternoon, but otherwise high pressure will maintain VFR conditions. Wind direction will be from the southwest with speeds picking up to about 10 knots during daylight hours. Wind speeds to diminish after sunset, with wind direction eventually veering more westerly late tonight and overnight.

DTW THRESHOLD PROBABILITIES.

* None.

PREV DISCUSSION. Issued at 233 AM EDT Tue Sep 22 2020

DISCUSSION .

A weak shortwave will cross the area, but only produce increased mid level cloudiness (and no precipitation) as the low level environment below 15kft remains very dry due to expansive high pressure centered to the southeast of the region. Even with the extra cloudiness highs will climb into the mid 70s by afternoon within a steady southwest flow.

Warm weather will then persist for the remainder of the week on into the weekend with high temperatures in the mid to upper 70s common and lower 80s quite plausible in some locations in the Wednesday to Saturday time frame. Sunshine should also be plentiful with just a weakening upper level shortwave trough bring some increased clouds in the Wednesday night through Thursday period.

Changes are still expected late in the forecast period as a strong cold front crosses the area on Sunday in association with a much more potent shortwave trough crossing the region. While medium range models have been fairly inconsistent in the exact evolution of this lead shortwave trough (as well as subsequent waves into early next week), there is a consensus that there will be a notable transition to the warm and dry regime of this week to a cooler and somewhat wetter scenario from Sunday into the end of this forecast period.

Temperatures should reach the lower/mid 70s again on Sunday early before steadying and eventually falling with the passage of the cold front and expansion of clouds/showers over the area during the day. A steady cooling trend should then unfold into Tuesday as upper troughing expands over the area with the advent of additional jet energy digging into the area. Highs will settle into the 60s on Monday generally and 50s by Tuesday as progressively colder air from Canada is drawn southeast into the Great Lakes region.

MARINE .

High pressure along the Appalachians will reposition over the Ohio Valley today continuing favorable boating conditions through the period. A weak cold front will settle across northern Lake Huron late today and remain near stationary through the week.

&

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

AVIATION . AM DISCUSSION . DG MARINE . DRC

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
MBRM4 - 9014090 - Mouth of the Black River, MI 6 mi53 min 53°F 1023.6 hPa
FTGM4 - 9014098 - Fort Gratiot, MI 7 mi53 min 52°F 1023.2 hPa47°F
AGCM4 20 mi53 min 48°F 64°F1024.7 hPa
45147 - Lake St Clair 35 mi41 min WSW 5.8 G 7.8 65°F1 ft1023.3 hPa (-0.8)
PSCM4 35 mi101 min SSW 5.1 G 8 53°F 1042.3 hPa (-1.0)
CLSM4 - St. Clair Shores, MI 37 mi41 min SSW 2.9 G 4.1 52°F 1025.4 hPa (-0.7)
45149 - Southern Lake Huron 49 mi41 min SSW 12 G 14 61°F 63°F2 ft1024.1 hPa (-0.8)

Wind History for Fort Gratiot, MI
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24hr		S5
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ago		SE9
SE9
G13
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NE10
G16
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NE8
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G17
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G12
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G8
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G8
2 days
ago		S3
S3
SE8
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NE10
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E7
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G9
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G10
SE5
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G11
Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Clair County International Airport, MI3 mi46 minN 010.00 miFair37°F35°F93%1025.1 hPa

Link to 5 minute data for KPHN

Wind History from PHN (wind in knots)
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AM
Last 24hrCalmCalmSE4SE6SW6S6S6SE6S7S6S3CalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmE4SE7E10E5SE3SE6E5SE4S4SE4SE5SE3CalmCalmCalmE5E4E5CalmCalmCalmCalmCalm
2 days agoCalmCalmE5NE4CalmCalmCalmCalmSW4SE3N5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
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
Ground Weather Radar Station Detroit, MI
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weather_mapweather_map weather_map

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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.