Florida, Indiana Weather Forecast Discussion

549
FXUS63 KIND 280700
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
300 AM EDT Sun Sep 28 2025
.KEY MESSAGES...
- Patchy fog possible early this morning
- Dry and marginally hot through Monday, highs in the mid/upper 80s
- Continued dry and very warm into next weekend, temperatures
  ranging from the 50s to around 80F
&&
.SHORT TERM (Today and tonight)...
Issued at 300 AM EDT Sun Sep 28 2025
An axis of mid to upper-level ridging will arrive today, with weak
troughing continuing to push eastward. This will aid in increasing
pressure at the surface, with pressure increasing from 1015 to
1028mb over the next 24 hours. This high pressure is expected to
remain through the forecast period in some capacity. In terms of
weather, ridging with building surface high pressure will create
mostly clear skies, light winds, and above-average temperatures. In
fact for today and tomorrow, 850mb temperatures will be creeping
towards 15C, allowing for surface temperatures to push well into the
upper 80s due to highly efficient PBL warming conditions. Overnight
lows should continue to dip into the 50s with dew points remaining
in the low to mid 50s. for the most part with ideal radiative
cooling conditions. Lows in the upper 50s to near 60 are more likely
in metro areas.
Patchy fog is possible during the overnight hours but duration and
coverage will be low and confined to near rivers and in agricultural
areas / farm fields.
&&
.LONG TERM (Monday through Saturday)...
Issued at 300 AM EDT Sun Sep 28 2025
The workweek will start with a near-carbon copy of the short term`s
impressive temperature swing from the upper 50s to unseasonably warm
upper 80s over many central Indiana counties.  The dry and anomalous
subtropical upper ridge leaning northeast while building farther
north into south-central Canada...will hold H500 570+ dm heights
into most of Indiana through at least Tuesday.  Combined with the
dry column`s ample sun and dewpoints in the 50s, this will
facilitate widespread mid to upper 80s through Tuesday.
A grandiose mass of autumnal surface high pressure over eastern
Canada, will eventually plunge southward to the Mid-Atlantic,
twisting with the highest upper heights expanding eastward into New
England.  The surface ridge will also build westward back into the
Midwest...with the arrival of this northern regime marked by breezes
veering from NE to E, advecting lower dewpoints to near/below
45F...around the Wednesday night timeframe.  Mostly clear skies will
continue to prevail through the late week as the drying ground
continues to promote large diurnal temperature ranges.  Readings
will generally run from well above normal afternoons around 80F and
near to slightly above normal early mornings in the 50s.
The upper ridge is expected to broaden over much of the US... likely
blocking precipitation chances from the local region until the
following week.
&&
.AVIATION (06Z TAF Issuance)...
Issued at 1254 AM EDT Sun Sep 28 2025
Impacts:
- Patchy fog possible at HUF and LAF with MVFR to potentially IFR
vsbys
Discussion:
VFR conditions expected throughout the TAF period with the exception
of brief fog this morning. Coverage of fog will be minimal, but
confidence is high enough for an MVFR mention at LAF and HUF. BMG
will also have to be watched for fog development. Any fog may
temporarily reduce conditions to MVFR with a lower chance for
brief IFR conditions. Winds will remain light and variable through
the period with mostly clear skies outside of some passing cirrus
and diurnally driven cu at around 050.
&&
.IND WATCHES/WARNINGS/ADVISORIES...None.
&&
$$
SHORT TERM...Updike
LONG TERM...AGM
AVIATION...Updike

NWS IND Office Area Forecast Discussion