Finly, Indiana Weather Forecast Discussion

861
FXUS63 KIND 282311
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
711 PM EDT Sun Sep 28 2025
.KEY MESSAGES...
- Dry with above to well-above average temperatures this week.
- Patchy fog possible during the overnights.
&&
.FORECAST UPDATE...
Issued at 707 PM EDT Sun Sep 28 2025
Only very minor changes were made to the forecast to better match
current observations. Otherwise, forecast is in great shape. Calm
conditions are expected overnight with high pressure over the area.
Kept the cooler than guidance temps overnight given the radiational
cooling setup, so will see lows from the mid 50s to near 60. Low
lying areas may see cooler pockets and possibly patchy fog at times,
but widespread fog is not expected at this time.
&&
.DISCUSSION (Today through Saturday night)...
Issued at 306 PM EDT Sun Sep 28 2025
Synoptically, the polar jet to our north is currently dominated by
large-scale ridging while a weaker more amplified subtropical jet
remains to our south. Strong ridging within the polar jet has
allowed temperatures to climb to well-above average values, with
temperatures in the mid to upper 80s this weekend. Continued above-
average warmth is expected as we head into the new week. A slight
cool down is possible as northeasterly surface winds develop
tomorrow, but even so temps will still be above normal. The diurnal
curve should be fairly steep throughout the week with conditions
favoring strong solar insolation and ideal radiative cooling at
night.
Short-wave troughs within the subtropical jet should largely pass to
our south, which will help keep moisture from lifting northward.
Strong high pressure at the surface, with the high center over the
northeastern US, will remain the dominant surface feature. Given a
lack of moisture and a largely subsident atmosphere, a very dry
stretch of weather looks to continue through the week.
One of the short-wave troughs may provide us with some mid to high-
level cloud cover Wednesday into Thursday, but that`s about it. This
week may be about as quiet as a weather forecast can be.
Additionally, our nightly patchy fog chances look to diminish as
ground moisture from recent rains continues to evaporate. Any
nightly fog should be very patchy in nature, shallow, and confined
to near rivers and in open fields prone to evapotranspiration.
Normal highs/lows in the Indy metro area this week are 73/52.
&&
.AVIATION (00Z TAF Issuance)...
Issued at 657 PM EDT Sun Sep 28 2025
Impacts:
- Brief MVFR/IFR conditions in fog possible at KHUF/KLAF/KBMG late
tonight
Discussion:
VFR conditions are expected through the TAF period at KIND, with
brief MVFR/IFR conditions expected at KHUF/KLAF/KBMG late tonight
with patchy shallow fog.
The patchy shallow fog at KHUF/KLAF/KBMG will dissipate quickly
after sunrise, ending by 13Z. Diurnal cumulus is expected
tomorrow afternoon similar to today. Winds will be light and
variable overnight and into tomorrow morning before settling on a
northeasterly direction tomorrow afternoon while remaining under
8kt.
&&
.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
UPDATE...KF
DISCUSSION...Eckhoff
AVIATION...Crosbie

NWS IND Office Area Forecast Discussion