Indiana’s Weather For Today

HEADLINES
– Mostly Cloudy and cooler today, with winds gusting to 35 mph.
– Frost Advisory tonight.
– Warming trend towards the end of the week.
– Strong to severe storms Friday night.

TODAY’S MAP

NWS TECHNICAL DISCUSSION

The upper trough axis will quickly push across Indiana this morning,
resulting in cool, NW flow aloft. Indiana will remain within area of
subsidence, on the lee side of the approaching ridge over the
Rockies. Models show extensive mid level drying across IL and
Indiana this afternoon. Meanwhile within the lower levels the
cyclonic lower level flow that starts the day will slowly wane as
the strong high to the west builds across the area. HRRR shows as
the NW flow builds across Indiana today, moisture within the lower
levels amid the cyclonic flow will spread from northern Indiana
across Central Indiana for much of the day. Forecast soundings
suggest lower level saturation with a mid level inversion and
subsidence aloft. Thus will expect a mostly cloudy day along with
cooler temperatures.  Given our cold air advection, highs should
only reach the low to middle 50s. Given the stratocu, a stray
sprinkle, especially in the Kokomo/Anderson and Muncie areas will be
possible. However measurable precipitation will not be expected.

Also of note, another breezy day is expected with wind gusts to
around 25 mph due to the moderate pressure gradient that will remain
in place through much of the day. As the high begins to arrive late
this afternoon, mixing ends and the gradient weakens, gusts will
subside.

Tonight -

A quiet and cold night is in store for Central Indiana. Aloft,
ridging to the west is expected to build across the plains and upper
midwest, keeping northwest lee side flow and subsidence in place
across IL and IN. The strong surface high pressure system is
expected to build eastward by Wednesday morning into the Ohio
valley. Forecast soundings and time heights at that time show a dry
column. Thus mostly clear skies will be expected along with light
winds. Lows in the middle to upper 30s appear expected overnight but
dew point depressions are suggested to remain greater than 4-5F.
This may prevent frost formation, but may need to be addressed again
later today.

&&

.LONG TERM (Wednesday through Monday)...
Issued at 233 AM EDT Tue Apr 15 2025

Wednesday Through Friday.

Any frost that forms Tuesday night will quickly clear Wednesday
morning as temperatures rise into the 40s by 9AM. Broad ridging will
dominate the weather pattern for the middle of the week with the
upper level jet remaining well north of the forecast area. Good flow
from the Gulf will help to bring a return to warmer than normal
temperatures and allow for occasionally breezy conditions Wednesday
and Thursday. A weak upper level wave will bring rain showers to
Iowa and Illinois Thursday and Thursday night, but no local impacts
are expected with good model agreement in the better forcing
remaining west of the forecast area.

Friday Through Monday.

Focus then shifts to the conditional threat for a few strong to
severe storms Friday night as a cold front pushes through central
Indiana. Ahead of the front, continued flow from the Gulf will bring
high temperatures to near 80 and dewpoints into the low 60s. This
warm and moist air will interact with an upper level trough moving
in from the northwest with a seasonably potent blast of cold air
behind it. Showers and storms are expected to initiate along the
southward moving cold front with both dynamics and thermodynamics
favorable for a few strong to severe storms. Details remain fairly
uncertain with model differences on both the timing of the system
and the strength of the cold air behind the system, but models are
beginning to come into better agreement that the better chances for
precipitation will be during the overnight hours.

Cooler air then will move in for Saturday behind the front but this
cooldown will be brief as a much stronger low will be developing
near the Four Corners region late Saturday into Sunday before
pushing into the Midwest early next week bringing additional severe
weather and possibly a return to flooding to the western Ohio Valley.

INDY SEVEN DAY FORECAST
Today: Partly to mostly cloudy, breezy, and colder again. A few sprinkles possible. High 53.

Tonight: Partly cloudy. Low 36.

Wednesday: Morning frost. Sunny. High 59.

Wednesday Night: Mostly clear. Low 39.

Thursday: Partly to mostly cloudy. High 66.

Thursday Night: Scattered showers. Low 56.

Friday: Partly sunny. Early morning showers possible. High 77.

Friday Night: Showers and storms, possibly strong to severe. Low 56.

Saturday: Scattered showers and storms, especially in the morning. High 67.

Saturday Night: Spotty showers still possible. Low 48.

Easter Sunday: Partly sunny. Spotty showers are still possible. High 68.

Sunday Night: Scattered evening showers. Low 54.

Monday: Partly sunny. High 72.
 

NWS CHARTS FOR TODAY/TONIGHT