370
FXUS63 KGRR 071947
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
347 PM EDT Mon Apr 7 2025

.KEY MESSAGES...

- Snow and Rain Chances Wednesday into Thursday

- Warming Up into the Weekend

&&

.DISCUSSION...
Issued at 347 PM EDT Mon Apr 7 2025

- Snow and Rain Chances Wednesday into Thursday

Our next round of precipitation moves in Wednesday as positive
vorticity, warm air, and moisture advection move in ahead of a low
pressure system moves through the region. The overall track and
strength of the system will impact our temperature profile and
overall precipitation type. Our current forecast using the NBM
gives us more of a rain/snow mix transitioning to rain with little
to no snow accumulations. If colder air is realized we may see
amounts closer to the 75th percentile of around an inch.
Probabilities of an inch or more are currently 30 percent or less
across much of the area except for slightly higher probabilities
of 40 to 50 percent in Clare and Osceola counties. Either way with
mild temperatures in place, would expect accumulations if any on
grassy surfaces. Drier conditions then move in Thursday night and
continue into the weekend.

- Warming Up into the Weekend

High pressure builds over the area for the end of the week.
Ensembles highlight the dry period and warming trend into next
week. Highs Tuesday will be in the 30s, but each day highs will
increase by several degrees with 50s and 60s expected over the
weekend.

&&

.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...
Issued at 128 PM EDT Mon Apr 7 2025

Some areas of MVFR conditions can be expected this afternoon in
snow flurries. Stratus deck with bases/ceilings of 3000 to 3500
feet AGL and tops around 8000 feet will break up by early evening
with VFR conditions prevailing tonight into Tuesday afternoon.

Northwest winds will gust over 20 knots through the afternoon then
slowly decrease this evening to 10 knots or less.

&&

.MARINE...
Issued at 347 PM EDT Mon Apr 7 2025

Gusty northerly winds will continue through late tonight with some
isolated gales for the rest of this afternoon. Waves will be slow
to come down, but are expected to fall below Small Craft Advisory
criteria Tuesday morning. Southerly winds move in for Wednesday
along with chances for mainly rain.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...Small Craft Advisory until 11 AM EDT Tuesday for LMZ844>849.

&&

$$

DISCUSSION...RAH
AVIATION...Ostuno
MARINE...RAH