396
FXUS63 KGRR 281059
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
659 AM EDT Tue Jul 28 2026
.KEY MESSAGES...
- Next chance for rain Friday and Saturday
&&
.DISCUSSION...
Issued at 227 AM EDT Tue Jul 28 2026
- Next chance for rain Friday and Saturday
Quiet weather this week under high pressure with the next chance
for rain coming at the end of the week into the weekend. A
shortwave tough rounds the top of the western CONUS ridge and
closes off across or just south of the Great Lakes.
A surface low meandering across the Ohio Valley brings a moist
easterly flow into Lower Michigan where mid level f-gen forcing
and instability should bring rain and embedded thunderstorms with
some diurnal enhancement over the weekend. Although the current
forecast does not have POPs early next week, some showers could
linger into Monday and even Tuesday before he upper low gets
kicked out.
&&
.AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/...
Issued at 658 AM EDT Tue Jul 28 2026
MVFR with patchy IFR conditions are expected early this morning
then conditions should improve to VFR by 18Z as drier air moves
in from the north. North winds could gust over 20 knots at times
today then diminish to less than 10 knots this evening.
&&
.MARINE...
Issued at 227 AM EDT Tue Jul 28 2026
North flow with advancing high will cause hazardous conditions for
boaters and swimmers today and tonight, as well as resulting in
upwelling and lowered water temperatures. Conditions will improve
under high pressure on Wednesday.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Beach Hazards Statement through late tonight for MIZ037-043-050-
056-064-071.
MARINE...Small Craft Advisory until 2 AM EDT Wednesday for LMZ844>849.
&&
$$
DISCUSSION...Ostuno
AVIATION...Ostuno
MARINE...Ostuno
NWS GRR Office Area Forecast Discussion