305
FXUS63 KGRR 241053
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
653 AM EDT Wed Jun 24 2026
.KEY MESSAGES...
- Showers and Storms Today into Tonight
- Fair weather with Warmer than normal temperatures ahead
&&
.DISCUSSION...
Issued at 250 AM EDT Wed Jun 24 2026
- Showers and Storms Today into Tonight
Forecast remains on track as a rather shallow, clipper type system
will swing through the region today and tonight. PWATS are around
1 to 1.5 inches with mid level lapse rates peaking around 6 to 7
C/km. Scattered showers are expected his morning into this
afternoon. The best chance for storms will be late today with the
arrival of a LLJ. Current track brings it closer to the I 94
corridor late today into this evening. While dynamics should be
enough to produce storms, the lack of instability due to earlier
showers will limit storm production and longevity.
The clipper and associated fronts will move southward late
tonight into Thursday.
- Fair weather with Warmer than normal temperatures ahead
Predominate zonal flow will continue through the weekend with the
best moisture through IN with high pressure keeping the MI dry.
The pattern will shift next week as high pressure builds over the
eastern half of the US. This will allow 850 temps in the mid 20s
through Lower MI. Due to that temp advection, lower MI Max temps
could reach 90s. Couple that with dewpoints potentially into the
70s and heat indices early next week have a chance to reach into
the 100s.
&&
.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 640 AM EDT Wed Jun 24 2026
Weakening shower will move into the area mid to late morning. As
a warm front moves near there will be a chance for MVFR and lower
at MKG/GRR and LAN after 14Z. Chance for showers with restrictions
at all airports this afternoon with thunder possible this
evening, especially at the southern airports, mainly between 23Z
and 05Z.
Behind the front expect cigs to lower after 06Z Thursday with IFR
cigs likely at all TAF sites.
&&
.MARINE...
Issued at 440 AM EDT Wed Jun 24 2026
Wind remain fairly light towards morning. However, winds from the
south will increase out ahead of the front. There remains the
chance for higher waves over the northern nearshore zones. Have
put out a SCA and beach hazards accordingly. Showers are likely
along the lakeshore today with storms possible late this afternoon
into the evening.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Beach Hazards Statement from 2 PM EDT this afternoon through
this evening for MIZ037-043-050.
MARINE...Small Craft Advisory from 2 PM this afternoon to 10 PM EDT this
evening for LMZ847>849.
&&
$$
DISCUSSION...Ceru
AVIATION...Ceru
MARINE...Ceru
NWS GRR Office Area Forecast Discussion
