261
FXUS63 KGRR 250706
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
306 AM EDT Wed Mar 25 2026
.KEY MESSAGES...
- Severe Weather Potential for Thursday Afternoon
&&
.DISCUSSION...
Issued at 305 AM EDT Wed Mar 25 2026
- Severe Weather Potential for Thursday Afternoon
Only significant weather of note this week will be a chance for
strong to severe storms across the southern half of the forecast
area on Thursday afternoon. Model guidance continues to show the
potential for isolated severe storms with large hail and damaging
winds/isolated tornadoes south of I-96 Thursday afternoon, which
congeals into a solid line of storms bringing a more widespread
severe threat as it sinks south into northern Indiana and Ohio.
Deep layer shear of 50 knots and 0 to 1 km helicity over 200 m2/s2
is progged to be across the southern forecast area Thursday
afternoon but instability may be limited, especially if morning
clouds and showers persist into the afternoon. The 00Z GFS model
soundings indicate the cold front will be clearing JXN and AZO by
4 pm with the potential for elevated strong to severe storms
persisting above the stable layer until early evening. Strong push
of colder air for later Thursday evening could see post frontal
precip change to snow before ending.
&&
.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 233 AM EDT Wed Mar 25 2026
VFR conditions will continue through Wednesday. South winds around
10 knots through the afternoon.
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Ostuno
AVIATION...Ostuno
NWS GRR Office Area Forecast Discussion
