374
FXUS63 KGRR 302325
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
725 PM EDT Thu Apr 30 2026
.KEY MESSAGES...
- Cold with Frost/Freeze conditions into Saturday
- Below Normal Temperatures Dominate the First Week of May
&&
.DISCUSSION...
Issued at 205 PM EDT Thu Apr 30 2026
- Cold with Frost/Freeze conditions into Saturday
We have issued a Freeze Warning for the north interior forecast
area and a Frost Advisory surrounding that area. Temperatures are
expected to be slightly colder than last night, but clouds should
once again impede widespread frost formation.
Friday night will see the cold air remain in place along with
lower dew points and mostly clear skies, allowing temperatures to
tank into the 20s across much of the interior CWA and at or below
32F elsewhere. So a Freeze Watch is in effect across the entire
forecast area.
- Below Normal Temperatures Dominate the First Week of May
Persistent upper troughing is in store for the Great Lakes region
through next week, with near normal temperatures early in the
week crashing to about 10 degrees below normal by the end of the
week with more freezing conditions possible across the northern
interior at least. The good news is that no heavy rain or severe
weather is expected in the dominant northwest flow regime.
&&
.AVIATION /00Z TAFS THROUGH 00Z SATURDAY/...
Issued at 722 PM EDT Thu Apr 30 2026
Light rain is beginning to move across the southern couple of rows
of counties as low pressure moves across northern IN. This
precipitation will last a few hours and affect the I-94 terminals.
The other TAF sites will see a mid bkn-ovc deck. VFR is expected
through the period.
&&
.MARINE...
Issued at 205 PM EDT Thu Apr 30 2026
Winds and waves are currently forecast to remain below SCA
conditions through Saturday. There could be brief gusts to 25
knots at times on Friday, with a better chance on Sunday as low
pressure approaches from the northwest and southwest winds
increase.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Frost Advisory from 2 AM to 8 AM EDT Friday for MIZ037-043>046-
051-052.
Freeze Watch from late Friday night through Saturday morning for
MIZ037>040-043>046-050>052-056>059-064>067-071>074.
Freeze Warning from 2 AM to 8 AM EDT Friday for MIZ038>040.
MARINE...None.
&&
$$
DISCUSSION...Ostuno
AVIATION...04
MARINE...Ostuno
NWS GRR Office Area Forecast Discussion
