019
FXUS63 KGRR 101040
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
640 AM EDT Sun May 10 2026
.KEY MESSAGES...
- Frost/Freeze Next Couple Nights
- Rain Chances Tuesday and Late Week
&&
.DISCUSSION...
Issued at 221 AM EDT Sun May 10 2026
- Frost/Freeze Next Couple Nights
Canadian surface high builds in tonight with clear skies and light
winds leading to frost/freeze conditions for all of the forecast
area. This should be the coldest night of the week since the sfc
high is moving east Monday night and clouds may be moving in late
in the night but temperatures could still fall below freezing in
the cold spots where winds stay decoupled.
- Rain Chances Tuesday and Late Week
A clipper low moving in the fast northwest flow arrives on Tuesday
with the first widespread rain this month. QPF expected to be
around a quarter inch with some isolated half inch amounts
possible with scattered convection Tuesday evening.
Flow goes more zonal late week and deeper moisture streams up from
the Gulf ahead of a shortwave trough that arrives Friday or
Saturday with showers and scattered convection.
&&
.AVIATION /12Z TAFS THROUGH 12Z MONDAY/...
Issued at 640 AM EDT Sun May 10 2026
VFR conditions will continue through tonight. Northwest winds
could gust over 20 knots at times this afternoon before
diminishing to near calm this evening.
&&
.MARINE...
Issued at 221 AM EDT Sun May 10 2026
Light winds and waves will continue into Tuesday then a Small
Craft Advisory will be needed for late Tuesday into Wednesday as
high pressure moves east and south winds increase to 30 knots.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Frost Advisory until 8 AM EDT this morning for MIZ037-043>046.
Freeze Warning until 8 AM EDT this morning for MIZ038>040.
MARINE...None.
&&
$$
DISCUSSION...Ostuno
AVIATION...Ostuno
MARINE...Ostuno
NWS GRR Office Area Forecast Discussion
