547
FXUS63 KGRR 081904
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
204 PM EST Sun Nov 8 2026
.KEY MESSAGES...
- Mild and dry through mid week
- Showers mid week, then cooler
&&
.DISCUSSION...
Issued at 204 PM EST Sun Nov 8 2026
- Mild and dry through mid week
Systems are moving across the Great Lakes quickly. A short wave
over southern Ontario nosing into eastern Lower is presently
moving east and clouds are rapidly dissipating as ridging moves
in. This short wave ridge will move overhead tonight and Monday
morning before warm air advection clouds associated with the next
short wave trek east from Wisconsin Monday afternoon. The
atmosphere is dry and we won`t see any precipitation from those
clouds.
The weak ridging (h8 temps near +8c) for the next few days will
keep high temperatures above normal through Wednesday with highs
in the 55-60 degree range.
- Showers mid week, then cooler
The next chance of rain is Wednesday afternoon (30%-40%).
An eastern Pacific short wave will move across the Rockies and
carve out a mid Mississippi Valley trough. That, in turn, will
pull short wave energy south from southern Canada resulting in a
higher amplitude trough over the eastern half of the country.
We may see some light rain from the various short waves moving
through the flow. Highest pops will be near the lake shore were a
north/south band of lake enhanced rain will develop...aided by the
colder air drawn south into the upper trough.
H8 temperatures will fall to -8c by Friday morning as colder air
flows south in the trough. That`ll result in highs in the mid 40s
again.
Generally dry conditions are expected beginning Thursday and
carrying through next weekend as the effects of the upper trough
move east.
&&
.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1239 PM EST Sun Nov 8 2026
Current MVFR ceilings around 1500 feet will scatter out in the
next 2 hours. Westerly winds with gusts around 25 knots will
continue through the afternoon before an inversion builds in this
evening. Winds become more northwesterly bringing in some cloud
cover from the north along with lake effect clouds. The chance
for ceilings below 3000 feet is 30 to 50 percent for AZO and MKG
this evening and increasing to 50 to 70 percent Monday morning
with MKG having the higher probabilities. These lower ceilings may
approach GRR Monday morning, but higher probabilities are that
GRR remains VFR.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...Small Craft Advisory until 5 AM EST Monday for LMZ844>849.
&&
$$
DISCUSSION...04
AVIATION...RAH
NWS GRR Office Area Forecast Discussion
