Marine Forecasts

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7 Day Forecast for Marine Location Near Wyandotte, MI

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Area Discussion for - Detroit/Pontiac, MI

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FXUS63 KDTX 042024 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 324 PM EST Thu Mar 4 2021

DISCUSSION.

Mid level northwest flow will continue to govern conditions across southeast Michigan over the next 72 hours, as the western expanse of height falls associated with a closed low over New Foundland remain fixated over the region. Coldest daytime conditions noted presently, as gradual height falls continue above prevailing low level north- northeast flow. A healthy radiational cooling environment will emerge tonight as lingering low stratus fades with the loss of daytime heating, offering an extended window of clear sky atop a diminishing gradient within encroaching surface ridging. Lows tonight mainly in the teens. Standard diurnal moderation of this colder resident thermal profile Friday given the high degree of insolation and no real advective process. This translates into highs right around average.

Strengthening low level anticylone maintained beneath prevailing northwest flow ensures benign weather conditions throughout the weekend period. Sunday the warmer day of the two, as a building upper height field supplements full insolation to net 5 to 7 degrees of warming across the lowest 900 mb. Window for meaningful warm air advection exists Monday depending on frontal timing and extent of associated cloud/pcpn potential tied to a northern stream shortwave projected to track through the northern great lakes. Regardless, the underlying pattern of generally higher upper heights with a transition toward mid level southwest flow suggets above average warmth will define conditions throughout much of next week. This pattern shift may also introduce a more energetic southern stream, offering greater precipitation potential by Wed-Thu.

MARINE.

A blocked upper air pattern over eastern North America keeps the persistent northwest flow in place through the late week as low pressure hovers over far eastern Canada. Wind speeds around 15 to 25 kt continue through tonight into early Friday which keeps wave activity elevated over the southern basin of Lake Huron. Small Craft Advisories remain in effect for the nearshore zones due to the waves. High pressure continues building into the northern and western Great Lakes tonight and strengthens the existing pressure gradient. Northwest gales subsequently become increasingly likely for northern/central Lake Huron on Friday afternoon and evening, and a Gale Warning has been issued. Wind strength then eases heading into the weekend as the high pressure drifts eastward. Dry conditions prevail through the period due to this high.

PREV DISCUSSION. Issued at 1221 PM EST Thu Mar 4 2021

AVIATION .

Moisture underneath the shallow inversion was enough to bring scattered snow showers this morning and into the early afternoon. Drier air has been slow to improve conditions and lift cloud bases, however, cloud bases have begun to lift back to VFR and scatter out early this afternoon. Once clouds clear, VFR conditions hold through Friday. Winds gusting into the mid 20 knot range will also slowly settle down as the afternoon progresses. North to northwest winds will continue to persist through the overnight hours and into Friday.

For DTW . While clouds will eventually clear, the uncertainly continues to lie in the timing of the clearing. Timing does still look to be in the 21Z to 23Z time frame.

DTW THRESHOLD PROBABILITIES .

* High in ceilings below 5000 feet this afternoon.

DTX WATCHES/WARNINGS/ADVISORIES. MI . NONE. Lake Huron . Small Craft Advisory until 4 PM EST Saturday for LHZ421-441>443.

Gale Warning from 2 PM Friday to midnight EST Friday night for LHZ361>363.

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

DISCUSSION . MR MARINE . TF AVIATION . SS

You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit.

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CLSM4 - St. Clair Shores, MI	24 mi	72 min	NNW 12 G 18	28°F			1025.7 hPa (+1.0)
THRO1 - 9063085 - Toledo, OH	38 mi	54 min	NNW 8 G 11	32°F			1023.7 hPa	13°F
CMPO1	44 mi	102 min	NNE 15 G 19	30°F
AGCM4	45 mi	54 min		28°F	34°F		1024.4 hPa
MRHO1 - 9063079 - Marblehead, OH	49 mi	54 min	N 16 G 19	29°F	33°F		1023.3 hPa	15°F

Wind History for Toledo, OH

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Detroit/Grosse Ile, Grosse Ile Airport, MI	6 mi	17 min	NE 11	10.00 mi	Partly Cloudy	32°F	13°F	46%	1024.7 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI	11 mi	19 min	N 9	10.00 mi	A Few Clouds	32°F	11°F	41%	1025.7 hPa
Coleman A Young Municipal Airport, MI	18 mi	19 min	NNE 10 G 18	10.00 mi	Fair	33°F	11°F	40%	1025.9 hPa
Detroit, Willow Run Airport, MI	21 mi	19 min	NNW 10	10.00 mi	Fair	36°F	12°F	37%	1025.3 hPa
Monroe, Custer Airport, MI	23 mi	17 min	N 12 G 15	10.00 mi	Partly Cloudy	33°F	12°F	42%	1024.7 hPa

Link to 5 minute data for KONZ

Wind History from ONZ (wind in knots)

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