.Short Term...(This evening through Tuesday night) Issued at 300 PM EDT Mon
Oct 25 2021  This Evening/Tonight... Yesterday`s upper low and associated
surface low continue to push northeast of central Indiana.  Nonetheless,
GOES16 IR shows a broad cyclonic rotation around the system with central
Indiana on the back side.  As a result, lingering rain showers continue to
drift across the forecast area at this time and will continue to do so into
the evening.  And, would not rule out light drizzle into tonight.
Meanwhile, winds will remain strong out of the west/northwest into tonight
when the pressure gradient weakens. Sustained speeds have generally been in
the 10 to 15 mph range with gusts up to 30 mph. As clouds scatter out
tonight, overnight lows will dip into the low 30s.  Tuesday/Tuesday
Night... A sharp upper ridge will spread over the Midwest tomorrow with
strong subsidence streaming into central Indiana.  So, any lingering
morning clouds will quickly clear out by Tuesday afternoon.  Nonetheless,
the breezy northerly winds will keep daytime highs below normal in the mid
to upper 50s.  A few wind gusts up to 20 mph could linger into the morning,
but sustained winds will have already dropped to around 5 to 10 mph.  The
strong radiational cooling under clear skies Tuesday night, coupled with
the light winds and low dew point depressions will be conducive to fog
formation.  Patchy dense fog could result in reduced visibilities early
Wednesday morning. 

NWS IND Office Area Forecast Discussion