234 FXUS63 KDTX 261113 AFDDTXArea Forecast Discussion National Weather Service Detroit/Pontiac MI 713 AM EDT Fri Sep 26 2025
.KEY MESSAGES...
- There is a chance of a few showers this evening mainly north of I- 69, otherwise the region will be dry through the weekend.
- Warmer temperatures are expected into early next week with highs breaking 80F at times.
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.AVIATION...
Areas of fog and patchy fog have develop across portions of southeast Michigan, though have managed to stay away from majority of TAF sites with the exception of FNT so far this morning. Thus, FNT carries the greatest VSBY reduction to start this TAF period. There will be decreasing coverage of fog upon sunrise, but it will still be possible for about an hour or so at the start of this TAF period for MVFR VSBY reductions. Winds remain light and out of the west this afternoon with VFR skies. A cold front reaching MBS around 00Z this evening while also bringing a low chance precipitation at MBS as well. Lingering low level moisture and may again bring some patchy fog development again tomorrow morning.
For DTW/D21 Convection...No convection is expected through the TAF period.
DTW THRESHOLD PROBABILITIES...
* None.
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.PREV DISCUSSION... Issued at 352 AM EDT Fri Sep 26 2025
DISCUSSION...
Some fog is showing up on satellite and observations over far SW lower MI with some more patchy fog noted in our CWA thus far with obs bouncing around from VFR to LIFR/IFR. At this point we`ll just continue to monitor for any potential dense fog through the early morning hours.
Persistent longwave trough finally pushed east of the region Thursday evening allowing heights to start building back overhead with a low amplitude ridge aloft sliding in for Friday night. There is one last frontal feature to deal with this afternoon before high pressure takes a stronger hold over the region. This cold front will drop through northern MI this morning, reaching the Saginaw Valley and Thumb during peak heating before stalling and lifting back north as a warm front on Saturday. Overall the column is much less supportive for showers than it has been with the upper level trough in place. Mid levels will be warming with the building heights which will cap most of the activity. But lower levels may still heat up enough to create low level lapse rates and even some weak CAPE (most guidance is
NWS DTX Office Area Forecast Discussion