Dewitt, Michigan Weather Forecast Discussion

101
FXUS63 KGRR 261153
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
753 AM EDT Fri Sep 26 2025
.KEY MESSAGES...
- Fog this morning with chance of rain this afternoon
- Warmer and Drier weather ahead
&&
.DISCUSSION...
Issued at 550 AM EDT Fri Sep 26 2025
- Fog this morning with chance of rain this afternoon
Clearing skies and light winds at the surface has provided for a
better environment for fog development this morning. The dew
point depression remains around zero with a very moist surface
However, while periods of dense fog will occur, there is enough
wind where fog will shift and visibility will improve periodically
at times. The inversion is extremely shallow, which helps to
explain the changing visibility, however, periods of dense fog
will continue through sunrise before lifting and dissipating by
mid morning due to clear skies. Temps should increase by 9 to 10
AM to allow any lingering clouds to clear.
A weak frontal boundary will sweep through northern lower and
clip the US 10 corridor. There is enough lift and moisture to
allow for a chance of rain through central Michigan.
- Warmer and Drier weather ahead
A ridge will continue to move over head through the weekend and
into next week this which will bring warmer and drier weather.
Temps could reach into the 80s Sunday and into next week. Expect
the warm weather to continue until around mid week. An upper level
trough moving through Eastern Canada could move southward through
the NE US and into the Mid Atlantic, that could push the ridge
westward, and cause some cold air advection that would drop Max
temperatures closer to normal.
&&
.AVIATION /12Z TAFS THROUGH 12Z SATURDAY/...
Issued at 752 AM EDT Fri Sep 26 2025
Patchy dense fog continues to bring VLIFR vsbys to JXN and BIV.
Shallow ground fog is in the vicinity of AZO. Have carried IFR and
lower fog/mist from 12Z to 14Z with VFR afterwards. VFR will
dominate today with another round of fog/mist possible tonight.
 It doesn`t look to be as dominant and unlike this morning`s fog
looks more likely to affect the northern TAF sites.
&&
.MARINE...
Issued at 354 AM EDT Fri Sep 26 2025
Conditions are expected to remain below Small Craft Advisory/Beach
Hazards Statement levels the next several days as a weak gradient is
in place across the area.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Dense Fog Advisory until 10 AM EDT this morning for MIZ056>058-
     064>066-071>074.
MARINE...None.
&&
$$
DISCUSSION...Ceru
AVIATION...Ceru
MARINE...Ceru

NWS GRR Office Area Forecast Discussion