580
FXUS63 KGRR 070541
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
1241 AM EST Sat Nov 7 2026
.KEY MESSAGES...
- Upper Low Moves East with Rain showers ending tonight
- Another Upper low and showers late week
&&
.DISCUSSION...
Issued at 205 PM EST Fri Nov 6 2026
- Upper Low Moves East with Rain showers ending tonight
Lake effect rain showers will taper off overnight as the upper low
moves east followed by height rises and general subsidence for
the weekend with fair and cool weather through Sunday. A clipper
will move north of Lower Michigan on Sunday but deep moisture and
precip will remain north of the forecast area. Fair weather
continues through the middle of the week in fast quasi-zonal flow.
- Another Upper low and showers late week
A northern stream shortwave trough tops the western CONUS upper
ridging and digs out a longwave trough across the eastern CONUS by
Thursday then merges with upper low over eastern Canada. The
resulting height falls across the Great Lakes region will result
in cooler temperatures with lake enhanced showers by the end of
next week.
&&
.AVIATION /06Z TAFS THROUGH 06Z SUNDAY/...
Issued at 1241 AM EST Sat Nov 7 2026
We are starting off this forecast period with widespread low
clouds over the area. These clouds are mainly MVFR with a few
breaks of VFR conditions. We expect the MVFR conditions to
continue into the early afternoon hours, before drier air replaces
the clouds and everything goes VFR as the clouds break up.
Eventually most locations will see some clearing by evening. This
will continue through the end of this period at 06z Sun.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...Small Craft Advisory until 11 AM EST this morning for LMZ844>846.
Small Craft Advisory until 4 AM EST early this morning for
LMZ847>849.
&&
$$
DISCUSSION...Ostuno
AVIATION...NJJ
NWS GRR Office Area Forecast Discussion
