849
FXUS63 KIWX 241740
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
140 PM EDT Sat May 24 2025

.KEY MESSAGES...

- Pleasant weather Memorial Day weekend - Dry and cool with
  highs in the 60s to around 70.

- Seasonally cool with low chances for rain Tuesday through
  Friday with highs around 70 to 75.

- Frequent chances for light rain next work week.

&&

.DISCUSSION...
Issued at 252 AM EDT Sat May 24 2025

Temperatures were dipping into the upper 30s near and north of
the Michigan line where patchy frost is expected early this
morning. Will keep mention of the patchy frost in these areas as
planned. The cold air near the ground will mix out rapidly this
morning with daytime heating.

The new GFS run (24/00Z) was just starting to move toward a hint of
run to run consistency with 500 mb height fields late this upcoming
week. CPC D+8 favors a stagnant pattern with a blocking pattern
continuing upstream and a weak cut off low in or near the Ohio
Valley. This pattern will keep enough moisture and lift as well
as the potential for a few thunderstorms. Blended in a little
more of a diurnal flare with thunderstorm chances given the
favored diurnal time period of 19Z to 01Z. Otherwise, overall
temperatures will gradually warm this upcoming week. Highs will
reach close to 75 by Saturday.

&&

.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
Issued at 133 PM EDT Sat May 24 2025

VFR Conditions are expected at the TAF sites today, with mainly
light NW to NE flow, some high/mid level clouds, and afternoon
cu around 4-5kft bouncing between SCT-BKN. High pressure
building in will limit winds overnight [perhaps becoming calm
or light and variable at times]. Northeast flow strengthens
slightly during the late morning and early afternoon hours
Sunday.


&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.

&&

$$

DISCUSSION...Skipper
AVIATION...MCD