Sunday, July25, 2021
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Marine Weather and Tides
Marine City, MI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:12AMSunset 9:00PM Sunday July 25, 2021 12:56 PM EDT (16:56 UTC) Moonrise 9:31PMMoonset 6:41AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 /o.exp.kdtx.ma.w.0039.000000t0000z-210725t0130z/ 926 Pm Edt Sat Jul 24 2021
.the special marine warning will expire at 930 pm edt... The affected areas were... St. Clair river... Lake st. Clair... The Thunderstorm has moved out of the area and no longer poses a significant threat to boaters. A severe Thunderstorm watch remains in effect until 1000 pm edt for southeastern michigan...and the adjacent waters of lake st. Clair. Lat...lon 4255 8259 4255 8261 4256 8264 4237 8283 4235 8293 4236 8294 4267 8282 4271 8270 4266 8259 4265 8259 4262 8252 time...mot...loc 0126z 297deg 30kt 4246 8259
LCZ422 Expires:202107250136;;404260 FZUS73 KDTX 250126 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 926 PM EDT Sat Jul 24 2021 LCZ422-460-250136-


7 Day Forecast for Marine Location Near Marine City, MI
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location: 42.71, -82.5     debug


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 251017 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 617 AM EDT Sun Jul 25 2021

AVIATION.

Predominately MVFR to IFR VSBYs as foggy conditions have developed this morning, which will continue until about mid morning for areas mainly south of I-69. mbS/FNT may see some reduced VSBYs as well, but morning observations showing the denser VSBY restrictions are from PTK and terminals to the south. Expecting VFR conditions by late morning, which will carry into tonight with an overall drier airmass moving into the region. Enough low level moisture should allow for some FEW-SCT low cloud development by the early afternoon, but remaining VFR. Winds will be out of the W-NW today peaking at 10- 15 knots during the afternoon.

For DTW . Expecting predominately MVFR fog to start the TAF period this morning. Fog should begin breaking up about 13-14Z along with the BKN low cloud deck currently hovering at 300 feet. Expecting VFR conditions by the late morning and through the remainder of the day, though a FEW/SCT diurnal cu could develop between 3500-5000 feet.

DTW THRESHOLD PROBABILITIES.

* Low for visibility of 1/2 mile or less after 12Z this morning.

* Low/Medium for ceilings at 200 feet or less this morning.

* Low for ceilings 5000 ft or less this afternoon.

PREV DISCUSSION. Issued at 403 AM EDT Sun Jul 25 2021

DISCUSSION .

An effective combination of elements are supporting areas of dense fog leading up to sunrise. Clear sky and a decoupled surface wind set up an efficient radiational cooling scenario for a boundary layer saturated by surface Td still in the upper 60s to around 70 on top of wet ground left behind by yesterday's storms. A Dense Fog Advisory is in effect with this forecast issuance for the Thumb region and the area south of I-69 to the Ohio border. This is where satellite observations indicate wider coverage which is expected to persist through mid morning. A standard dissipation trend then follows as daytime surface heating gains traction. There is also some background pressure gradient and light NW flow aloft to mix down with boundary layer growth. This helps low level dry air advection resume for the rest of the day taking surface Td down in the upper 50s to lower 60s by evening while afternoon highs reach for the 90 degree mark under full afternoon sun.

Dry weather continues tonight and Monday. Clear sky this time allows radiational cooling to reflect the lower humidity air mass in place and help low temperatures drop to near the 60 degree mark outside of metro Detroit. This is followed by another rebound toward 90 Monday afternoon.

The next chance of rain is in the late Monday night and Tuesday timeframe. Gulf moisture takes the wide circuit through the Plains and Midwest before streaming in along and ahead of the next cold front from Canada. Model agreement is good for such a small scale upper wave in fast WNW flow. The resulting surface reflection and cold front is preceded by moderate 850 to 700 mb theta-e advection which is the primary forcing shown to result in blossoming convection across the northern Great Lakes. This activity moves into southern Lower MI Tuesday morning and then fades by afternoon while the front only bumps temperatures down slightly into the lower to mid 80s.

The cold front tied to the Tuesday system stalls near the Ohio border Tuesday night and Wednesday. It does not look very active before getting pulled back north into Ontario with the next northern stream low pressure system. The cold front with that system moves in Wednesday night and Thursday. Predictability challenges are suspected more at these longer time ranges with another smaller scale wave showing up in fast WNW flow aloft maintained around the broad upper level ridge firmly in place through the end of the week.

MARINE .

Warm air and light wind is in place across the central Great Lakes today through Monday. This brings favorable marine conditions until the next chance of showers and thunderstorms Monday night and Tuesday. The cold front associated with the activity is strong enough to power storms but is projected to bring just a light NE wind shift into the mid week period.

DTX WATCHES/WARNINGS/ADVISORIES. MI . Dense Fog Advisory until 10 AM EDT this morning for MIZ049-054-055- 062-063-068>070-075-076-082-083.

Lake Huron . NONE. Lake St Clair . NONE. Michigan waters of Lake Erie . NONE.

AVIATION . AA DISCUSSION . BT MARINE . BT

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
AGCM4 6 mi63 min 81°F 71°F1012.6 hPa
MBRM4 - 9014090 - Mouth of the Black River, MI 19 mi63 min 85°F 1011.3 hPa
45147 - Lake St Clair 22 mi57 min SW 3.9 G 5.8 74°F 73°F1012.3 hPa (+0.4)
CLSM4 - St. Clair Shores, MI 26 mi57 min WNW 6 G 12 83°F 1013.2 hPa (-0.0)
PSCM4 49 mi57 min W 7 G 11 82°F 1029.8 hPa (+0.0)

Wind History for Fort Gratiot, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Clair County International Airport, MI15 mi62 minWSW 410.00 miPartly Cloudy82°F66°F58%1012.9 hPa
Selfridge Air National Guard Base, MI19 mi61 minNW 710.00 miPartly Cloudy83°F67°F58%1012.6 hPa

Link to 5 minute data for KPHN

Wind History from PHN (wind in knots)
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SW4SW5CalmCalmCalmCalmCalmCalmCalmW3CalmCalmCalmCalmSW3CalmW5
1 day agoS11S9
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S8S8S4S6S4S4SE3SE3SE3SE3SE3SE3SE4SE3SE4SE4SE5S8S8S7S8S7
2 days agoSW3NW6CalmE3CalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3S6S6SW5S4

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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