textproduct: Grand Rapids
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Dry through first half of the weekend
- Chance of rain Sunday
- Warm with Rain Monday into Tuesday then cooler behind front
DISCUSSION
Issued at 255 AM EDT Thu Oct 8 2026
- Dry through first half of the weekend
Models remain persistent on a large upper level low over north eastern Canada. The decent gradient will keep cooler, drier northwest flow through the region through the rest of today into Friday. The clear skies and northwesterly flow could allow for patchy frost along and north of the US 10 corridor. A ridge of high pressure will build over the central plains and upper midwest through Saturday. The warm air advection will continue through Saturday with 850mb temps upwards of +17C. This could correlate to temps near 80 across Southern Michigan, which could be 15 to 20 degrees above normal.
- Chance of rain Sunday
The warm air advection will continue through Sunday with the remnants of the tropical system will trek through the Ohio river valley and overspread the state. Latest track keeps best moisture southeast of the area. However, Area coinciding with I 69 and to the Southeast could still see showers Sunday.
- Warm with Rain Monday into Tuesday then cooler behind front
As previous forecasts noted, a strong cold front should swing through. Latest trends have the positively tilted trough extending from an upper level low moving through the area Tuesday. This could allow for more showers. It will also drop temperatures from 10 to 15 degrees above normal on Monday to near normal temperatures and falling Tuesday onward.
AVIATION /12Z TAFS THROUGH 12Z FRIDAY/
Issued at 654 AM EDT Thu Oct 8 2026
VFR will dominate the weather pattern through the TAF period. Gusty winds persist along the lakeshore, though most TAF sites will see winds become light overnight. Expect winds to mix out by mid to late morning and shift to the northwest with gusts upwards of 25 mph this afternoon. Winds will become light and variable tonight.
MARINE
Issued at 255 AM EDT Thu Oct 8 2026
Gusty winds from the west northwest will continue as a primarily dry trough moves southward. The winds will increase after daybreak and gusts will increase into the 25kts. Expect waves to increase again, and waves lingering this morning.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None. MARINE...Small Craft Advisory until 5 PM EDT this afternoon for LMZ844>849.
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