507
FXUS63 KGRR 071047
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
647 AM EDT Thu May 7 2026
.KEY MESSAGES...
- Cool with occasional chances for showers
&&
.DISCUSSION...
Issued at 234 AM EDT Thu May 7 2026
- Cool with occasional chances for showers
Upper troughing across the Great Lakes will persist into next
week. Temperatures will remain cool with a frost threat again
Thursday night. Frost/Freeze potential increases for Saturday,
Sunday and Monday nights as well. Clipper type lows will
occasionally bring showers in a northwest flow regime.
A shortwave trough moves through today and tonight with the
diurnal increase in sfc-based instability this afternoon and
evening resulting in isolated to scattered showers. The pattern
repeats for Saturday and Tuesday. The Tuesday low should have
deeper moisture to work with, but is moving fast enough to limit
the chances of excessive rainfall.
&&
.AVIATION /12Z TAFS THROUGH 12Z FRIDAY/...
Issued at 647 AM EDT Thu May 7 2026
VFR conditions will continue into Friday morning. West winds blo
10 knots early this morning will go west southwest this afternoon
and gust to 20 knots at times, then go southwest and diminish to
around 10 knots tonight.
&&
.MARINE...
Issued at 234 AM EDT Thu May 7 2026
West winds today could gust over 20 knots at times, otherwise
winds and waves will remain relatively light into the weekend.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Freeze Warning until 8 AM EDT this morning for MIZ037>040-
044>046.
Frost Advisory until 8 AM EDT this morning for MIZ043-050>052-
056>059-064>067-071>074.
MARINE...None.
&&
$$
DISCUSSION...Ostuno
AVIATION...Ostuno
MARINE...Ostuno
NWS GRR Office Area Forecast Discussion
