189
FXUS63 KGRR 220621
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
221 AM EDT Mon Jun 22 2026
.KEY MESSAGES...
- Cooler than normal this week with Rain on Wednesday
&&
.DISCUSSION...
Issued at 221 AM EDT Mon Jun 22 2026
- Cooler than normal this week with Rain on Wednesday
The Great Lakes region will continue to be in a fast quasi-zonal
flow regime on the southern edge of persistent upper troughing
across eastern Canada this week. This will keep temperatures below
normal while a shortwave trough brings the chance for rain
Wednesday into Wednesday night.
Moisture is limited on Wednesday with little return flow out
ahead of the low in a northwest flow regime and and precip amounts
will probably be less than a quarter inch.
&&
.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 221 AM EDT Mon Jun 22 2026
VFR conditions expected to become MVFR with patchy IFR overnight
before conditions improve later this morning as the rain moves
out. Northeast winds will gust to 20 knots at times this
afternoon.
&&
.MARINE...
Issued at 221 AM EDT Mon Jun 22 2026
Winds and waves will become hazardous to swimmers and small craft
this afternoon before decreasing late this evening. A Beach
Hazards Statement and Small Craft Advisory has been issued for
this afternoon and evening south of Pentwater.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Beach Hazards Statement from this afternoon through this evening
for MIZ043-050-056-064-071.
MARINE...Small Craft Advisory from 4 PM this afternoon to midnight EDT
tonight for LMZ844>848.
&&
$$
DISCUSSION...Ostuno
AVIATION...Ostuno
MARINE...Ostuno
NWS GRR Office Area Forecast Discussion
