textproduct: Detroit/Pontiac

KEY MESSAGES

- Dry and warm through the middle of the week. - The next chance of rain and thunderstorms develops Friday and continues through the weekend.

DISCUSSION

A seasonably strong 1020 mb surface high will remain anchored over the Great Lakes today and tomorrow, supporting continued subsidence, light winds, and a dry/stable column. Unidirectional northeast flow through the low-levels did produce strong 0-3km lapse rates which have aided in sparse cu development across the Irish Hills and Metro region. The few-sct cloud deck will erode around sunset, leading to clear skies overnight with lows right around 50 degrees. The overall longwave omega block pattern will start to break down tomorrow as the meandering closed low system across the rockies releases eastward ahead of a deepening pacific NW trough. This will fold the ridge axis across the Great Lakes tomorrow and will greatly reduce amplification of the wave. This will mute the influence of northeast flow tomorrow and will allow temperatures to push into the 80s under mostly sunny conditions, outside of some translucent cirrus that will stream in through the day. Winds back to the southwest on Thursday which fold the warmer temperatures in the Plains into the Great Lakes, pushing highs in the mid to upper 80s.

The next likely chance for rain and some thunderstorms will enter Friday into Saturday once the Pacific NW wave extends into the Midwest, eventually pushing the trough into Michigan. Confidence turns lower surrounding PoP chances into early next week pending the arrival and placement of a low pressure system originating from Texas. This is projected to stall out south of Michigan as high pressure drops from Canada into Michigan.

MARINE

High pressure sits atop the Great Lakes region throughout today into Wednesday. As the high pressure moves overhead, light winds from the northeast become variable. By Thursday, winds out of the southwest are expected as the high moves into the Mid-Atlantic. The next chance of rain and thunderstorms are greatest Friday night into Saturday as a cold front approaches the area, which is expected to bring breezy conditions as well.

PREV DISCUSSION

Issued at 1252 PM EDT Tue Jun 2 2026

AVIATION...

Region remains under high pressure through the forecast period maintaining VFR skies with only passing high cloud and pockets of diurnal cumulus. Modest northeast winds persist into the evening with peak gusts between 15-20kts. Winds turn light and variable overnight as the center of high pressure drifts overhead.

D21/DTW Convection...No thunderstorms through tomorrow.

DTW THRESHOLD PROBABILITIES...

* None.

DTX WATCHES/WARNINGS/ADVISORIES

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