Expert Forecast Opinion

239
FXUS63 KDTX 311022
AFDDTX

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
622 AM EDT Sat Oct 31 2026

.KEY MESSAGES...

- Cool but still slightly above normal temperatures again today.

- Low chance for a isolated light showers late today towards central
MI.

- Mild early to middle next week.

&&

.AVIATION...

VFR conditions through the period as a thick canopy of mid level
cloud based between 7 and 10k ft maintains residence. A light
variable early day wind will emerge from the southeast this
afternoon.

D21/DTW Convection...Thunderstorms are not forecast through the TAF
period.

.DTW THRESHOLD PROBABILITIES...

* None

&&

.PREV DISCUSSION...
Issued at 335 AM EDT Sat Oct 31 2026

DISCUSSION...

Center of high pressure shifts into the eastern Great
Lakes/Appalachians today allowing light southeasterly winds to
develop locally. While this doesn`t draw in much warm advection, it
does shunt the coolest air out of the region supporting more uniform
upper 50-lower 60 highs across SE MI. Cloudier skies today are the
result of a warm front lifting out of the Mississippi valley into
Great Lakes/upper Midwest. Primary theta-e axis is directed west of
Lake Michigan leading to the majority of associated showers holding
well to our west. That said, lower MI holds on the periphery of
elevated moisture transport this afternoon into tonight allowing
isolated to scattered light showers to work across the state. These
will struggle to survive into our CWA owing to the dry resident
airmass with main chances (and low end at that) confined towards the
central portion of the state and near the Ohio border. Any shower
that does get into the area will be brief and light.

Broad Pacific Northwest trough slowly traverses the central CONUS
next week eventually bringing a return to active weather locally.
Timing details remain nebulous given a good spread in the speed of
the longwave and if a northern stream Canadian shortwave can phase
with the trough. While rain could reach the southern lower MI as
early as Monday, the mid week period remains the favored window for
wider spread showers with milder/humid air (by fall standards) in
place. The attendant cold front eventually crosses latter half of
the week bringing at least a brief return towards more average late
fall temperatures though still likely several degrees above normal.

MARINE...

High pressure builds in this morning which will maintain light winds
through the weekend. High pressure exits into New England late
tonight, reinforcing south flow into early next week. Mostly dry
conditions are expected, outside of isolated spotty showers. More
active conditions then enter late Monday and through the Midweek
period as low pressure develops over the Plains. Southerly winds
increase Tuesday and Wednesday as low pressure tracks towards the
northern Great Lakes. Rain showers and a low chance for a
thunderstorm also become more likely as the low approaches.

&&

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

$$

AVIATION.....MR
DISCUSSION...KDK
MARINE.......AM

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