350
FXUS63 KGRR 012335
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
735 PM EDT Mon Jun 1 2026
.KEY MESSAGES...
- Dry weather through Thursday
- Chances for showers and storms Friday into the weekend
- Near to slightly above normal temperatures
&&
.DISCUSSION...
Issued at 226 PM EDT Mon Jun 1 2026
- Dry weather through Thursday
High pressure settles into the area tonight from the north. The
high will remain in place into Wednesday. Skies will be mainly
clear from Tonight through Tuesday night. The high will slowly
move off to the east Wednesday into Thursday, but we will remain
dry given the lack of low level moisture. Pleasant weather is
expected, unless you are looking for rain.
- Chances for showers and storms Friday into the weekend
Rain chances increase beginning Thursday night, but especially
Friday into the weekend. A boundary will sag into the area from
the north Thursday into Friday, taking on warm frontal
characteristics Saturday into Saturday night. Showers and
thunderstorms are possible from Thursday night through Sunday, but
Saturday and Sunday look to have the best chances. MUCAPE values
look to reach the 1,000 to 2,000 j/kg range both days. That said
when you get out to Sunday there are some timing and strength
differences with a weak low and front moving through the region.
These differences are tied to the handling of the upper pattern
during this time frame with respect to a wave moving through the
northern tier of the country. Bottom line, dry for the next few
days and then turning more unsettled towards the end of the week
and the weekend.
- Near to slightly above normal temperatures
Temperatures look to be around 80 to the lower 80s much of the
next 7 days. 850mb temps warm from +8C to +10C over the next 24
hours to well into the teens C as we work through next weekend. We
have flipped the calendar to June and the temperatures will be in
tune with summer.
&&
.AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/...
Issued at 735 PM EDT Mon Jun 1 2026
VFR is expected with mostly clear skies. The cumulus clouds
around 8,000 feet this evening are expected to dissipate
overnight. Generally northeast winds will prevail.
&&
.MARINE...
Issued at 226 PM EDT Mon Jun 1 2026
Surface high pressure will drop into the Great Lakes from the
north out of Ontario tonight. The high will remain situated over
the area then both Tuesday and Wednesday. We will see sub
advisory conditions on Lake Michigan through Wednesday. Waves will
largely be 2 feet or less through Wednesday. Waves will increase
both this evening and Tuesday evening to around 2 feet as thermal
differences between the land and the lake are maximized.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Duke
AVIATION...CAS
MARINE...Duke
NWS GRR Office Area Forecast Discussion