textproduct: Detroit/Pontiac

KEY MESSAGES

- Mild and mostly cloudy through early next week.

- Warmer on Tuesday with an increasing chance of rain mid-week.

DTW THRESHOLD PROBABILITIES

* High in ceilings aob 5000 ft late Monday morning and afternoon.

PREV DISCUSSION

Issued at 330 AM EST Sun Nov 1 2026

DISCUSSION...

Early morning upper air analysis shows broad lower amplitude upper ridging anchored locally, with a loosely organized southern stream mid level wave ejecting into the midwest. This wave is forecast to lift across southeast Michigan over the next 24 hours. The existing elevated height field within the background low level southeast flow will maintain a milder resident thermal profile for the first day of November, with a noted period of warm air advection across the 850- 925 mb layer as the lead edge of the wave encroaches. Thick canopy of mid level cloud will cap the insolation potential, but the advective process will aid in lifting temperatures into the middle and upper 60s most locations. While a spotty shower or two remains plausible as modest height falls work through, lack of meaningful moisture quality across the lowest 6-7k ft favors mainly dry conditions to finish the weekend period.

Dynamic mid level wave now seen on water vapor lifting into the west coast will strengthen while closing as it enters the plains by early next week. A notable increase in the upper height field immediately downstream will maintain this stretch of warmer conditions locally, with 850 mb temperatures peaking in the lower teens Tuesday. This will translate into highs of low to mid 70s by Tuesday - or a solid 15 to 20 degrees above average for early November. Greater forced ascent tied to more meaningful moist isentropic ascent will largely remain to the west thru this time, but with some suggestion that a window may exist for light shower production sometime Monday night into early Tuesday with greater potential with northward extent.

Central conus closed low will slowly track east-northeast thru the latter half of the week while gradually weakening with time. Attendant cold front currently projected to migrate through lower Michigan Wednesday and Wednesday night. Favorable environment will exist given the increase in moisture along the advancing front under strengthening low level southwest flow for a high coverage of rain to develop during this time. Area will reside on the north flank of better instability residing across the Ohio valley, worthy of perhaps an isolated mention for a rumble of thunder. A late day arrival will again lend favorably to continued very mild conditions, with highs again forecast near 70 degrees Wednesday. Trending cooler with potential for unsettled conditions to linger for the end of the week as the trailing upper trough maintains moist cyclonic flow and steeper mid level lapse rates. With that, temperatures still projected to reside on the warmer side of average heading into next weekend.

MARINE...

Light southerly winds will prevail through the rest of the weekend as strong high pressure centered along the Mid-Atlantic coast still extends west and maintains its influence. Southerly winds will increase early next week as low pressure develops over Minnesota and lingers into the midweek. Wind gusts are expected to peak out 25 to 30 knot range, as warm air (lower teens at 850 MB) keeps mixing depths in check. Enough moisture is expected to advect into the Great Lakes region to support increased coverage of showers Tuesday and Wednesday. Showers could potentially linger into Thursday as either the primary cold front or a weaker low pressure system tracks through. Wind speeds and direction remain uncertain for Thursday.

DTX WATCHES/WARNINGS/ADVISORIES

MI...None. Lake Huron...None. Lake St Clair...None. Michigan waters of Lake Erie...None.