782
FXUS63 KGRR 030720
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
220 AM EST Tue Mar 3 2026
.KEY MESSAGES...
- Slight Chance (20 percent) for Drizzle Today
- Rain Wednesday into Thursday
- Showers and Thunderstorms Friday into Saturday
&&
.DISCUSSION...
Issued at 220 AM EST Tue Mar 3 2026
- Slight Chance (20 percent) for Drizzle Today
This morning we`ll be keeping a close eye on observations with the
shortwave moving through. Low level moisture increases with the
potential for some patchy drizzle. This 20 percent chance is
focused largely along and south of I-96. Depending on air/surface
temperatures there could be a brief period of freezing drizzle
early on this morning before temperatures warm above freezing.
Icing, if any would be limited to a light glaze. Temperatures
will increase into the upper 30s to low 40s this afternoon. There
is a signal for some fog to develop tonight with the inversion in
place and light winds with residual low level moisture. If fog
does develop, there will be a chance for it to freeze on surfaces
with lows tonight in the mid to upper 20s.
- Rain Wednesday into Thursday
Wednesday rain approaches from the south, but may stay toward the
MI/IN border through much of the day, before flow becomes more
southwesterly with the approaching low Wednesday night. Chances
increase into Thursday (60 to 80 percent) with the low moving
overhead Thursday before dry conditions move in Thursday night.
The probability of a half inch or more of rain is 30 to 50 percent
across much of the area with probabilities of 1 inch or more of
rain 20 percent or less. High temperatures in the 40s to 50s are
expected.
- Showers and Thunderstorms Friday into Saturday
Southwest flow picks up bringing more moisture, warmer
temperatures, and instability to work with. Highs are expected to
be in the 50s and 60s bringing another taste of spring. Within
the warm air advection, chances for rain and thunderstorms build
Friday afternoon into Friday night to 70 to 90 percent. Drier air
moves in later Saturday into Sunday with temperatures slightly
cooler on Sunday in the 50s. Probability of a half inch or more is
40 to 70 percent and 20 to 40 percent for 1 inch or more Friday
through Saturday.
&&
.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...
Issued at 1134 PM EST Mon Mar 2 2026
We`ll start off the period VFR. However, clouds will increase
overnight as a warm front strengthens over Indiana. MVFR cigs will
move north toward sunrise and IFR may develop at AZO/BTL. There
is a non zero chance of light freezing drizzle between 12-15z, but
the chance isn`t great enough to include in the TAFs. Improvement
to cigs is expected after 00z.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...None.
&&
$$
DISCUSSION...RAH
AVIATION...04
NWS GRR Office Area Forecast Discussion
