Hemlock, Indiana Weather Forecast Discussion

375
FXUS63 KIND 270500
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
100 AM EDT Sat Sep 27 2025
.KEY MESSAGES...
- Fog possible again tonight, locally dense
- An otherwise lovely early autumn day today with clear skies this
  afternoon, highs 76-80F
- Dry and unseasonably warm this weekend into next week, highs in
  80s through Tuesday
&&
.FORECAST UPDATE...
Issued at 938 PM EDT Fri Sep 26 2025
No major changes needed to the ongoing forecast with conditions
generally evolving as expected. A few sites have dropped to 7 miles
with some very patchy fog already impacting central Indiana. With a
drier airmass near the surface, expect much lower coverage in fog
compared to last night with much of the fog remaining non-dense. The
subsidence is not quite is robust as last night which further helps
to increase the confidence in the lower coverage of fog. Overnight
lows in the low to mid 50s look reasonable based on current dew
points sitting in the mid to upper 50s.
&&
.SHORT TERM (This evening through Saturday)...
Issued at 312 PM EDT Fri Sep 26 2025
Analysis shows broad and weak troughing in the mid to upper-levels
with subtle high pressure at the surface. Upper-level ridging
upstream should gradually build eastward this the weekend, leaving
us with generally quiet weather through the forecast period.
Overall, expect mainly clear skies with seasonable temperatures
trending warmer-than-normal by tomorrow into Sunday. Expect highs
climbing into the 80s with lows generally falling into the 50s.
Our primary forecast challenge concerns patchy fog developing
overnight. Like this morning, light winds within a broadly subsident
column should promote ideal radiative cooling potential during the
overnight hours tonight and this weekend. Recent rainfall has
moistened up the boundary layer sufficiently for patchy fog after
sunset. Additionally, little in the way of an air mass change is
anticipated so rich low-level moisture should linger for a few days.
Conditions for fog should become less favorable with time, however,
as ground moisture slowly evaporates a little more each day. Still,
moisture is abundant enough for now that some instances of dense fog
cannot be ruled out. The best chance of fog is in areas that saw the
most rainfall, in agricultural/rural areas, and along river valleys.
&&
.LONG TERM (Saturday night through Friday)...
Issued at 312 PM EDT Fri Sep 26 2025
Dry and warm pattern is expected to persist through most, if not
all, of the long term period. An omega block will be in place at the
start of the period which models show should break down within a few
days, but an area of high pressure is expected to stick around the
Great Lakes through next week. By late next week, another blocking
pattern may set up again, keeping the warm, dry set up in place into
the extended period. There are still quite a few unknowns as
multiple tropical systems are ongoing in the Atlantic, and models
have varying resolutions for their tracks, mainly for the
disturbance near Cuba. For now, it seems most likely that these
systems will help to keep the nearby high from progressing eastward
much. However, can`t rule out the chance of some of the remnants
tracking into the region at some point next week, which could
potentially introduce some PoPs for central Indiana. Otherwise,
warmth and dryness is the name of the game for a while.
Highs through the long term will be above normal, starting off from
the mid 80s and into the upper 70s. Lows will be in the 50s to near
60.
&&
.AVIATION (06Z TAF Issuance)...
Issued at 1257 AM EDT Sat Sep 27 2025
Impacts:
- Intermitten VIS Reductions between 10-12Z
Discussion:
VFR conditions expected through the TAF period outside of small
threat for MVFR fog towards daybreak. Much drier surface air will
help to limit fog coverage but calm winds and clear skies may still
allow for periods of MVFR conditions. Greatest concern for MVFR VIS
is at KLAF and KHUF. Diurnal cu at around 050 will return tomorrow
afternoon, but otherwise skies should remain mostly clear to clear
through the TAF period with light and variable winds.
&&
.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
UPDATE...White
SHORT TERM...Eckhoff
LONG TERM...KF
AVIATION...Updike

NWS IND Office Area Forecast Discussion