Indiana’s Weather For Friday

HEADLINES
– Major flooding continues on the lower White and lower East Fork White Rivers.
– Clear and Cold tonight with near freezing lows. Some frost will be around Saturday morning.
– Brief warming trend begins on Sunday, but cooler air returns again next week.

TODAY’S MAP

NWS TECHNICAL DISCUSSION

Dry weather is expected today, with decreasing cloudiness through
the day. Models suggest the upper low will continue to move east,
while the ridging to the west along with the associated subsidence
with this feature begins to build into the Ohio Valley. The
associated surface high pressure, currently centered over the
western Plains, will drift east and begin to build across Indiana.
Forecast soundings and time heights show drying within the column
this morning as the low departs and the subsidence begins to arrive.
Thus we will expect clouds this morning still lingering across the
area. However decreasing cloudiness through the afternoon will lead
to sunshine by the middle of the afternoon. CU will not be expected
as convective temperatures in the 70s will not be reached. Given our
cool north winds and ongoing cold air advection expected, highs will
mainly be in the lower 50s.

Tonight -

At or slightly below freezing conditions tonight will necessitate a
freeze warning tonight.

Subsidence, high pressure and a core of cold air over Central
Indiana will lead to a clear and cold night. The ridging to the west
is expected to build across the plains as the surface high pressure
system becomes centered over the mid Mississippi Valley. All of this
will result in clear skies and cold conditions, ideal for
radiational cooling. Given the expected dew points in the upper 20s,
low temperatures at or below freezing will be expected. Thus a
freeze warning will be needed for any sensitive vegetation in this
early growing season.

&&

.LONG TERM (Saturday through Thursday)...
Issued at 234 AM EDT Fri Apr 11 2025

Saturday through Sunday.

After a chilly start to the morning with temperatures near freezing,
the pattern will begin to shift through the day with a return to
southerly surface flow by mid to late afternoon which should allow
for highs to climb into the upper 50s to near 60. Dry and quiet
weather will continue into the overnight with broad surface and
upper level ridging continuing into early Sunday. Breezy conditions
are then expected for Sunday with temperatures rising into the mid
to upper 60s and the boundary layer deepening to around 3-4kft which
will allow for the mixing down of winds of 25-30 mph. There could be
a few showers during the afternoon hours with some weak lift across
the area but the threat looks minimal with better chances Monday as
a cold front moves through.

Monday Through Thursday.

A strong upper level low pressure system will be moving across the
Canadian border Sunday night into Monday with a cold front
stretching southward into the Ohio Valley. Models have fairly good
agreement in the front passing through central Indiana during the
afternoon hours on MOnday with scattered to numerous showers and a
few thunderstorms. Instability will be marginal with dewpoints
mixing out during the day but there will enough shear to allow for
the low-end threat for a few stronger storms across southeastern
Indiana.

Cooler but still seasonable temperatures will then be in place
Tuesday through Thursday with decreasing confidence in the forecast
as models struggle to handle the synoptic pattern post-front. There
may be a return to frost Tuesday and Wednesday  nights with
overnight lows in the 30s, but there remains a lot of uncertainty as
to how favorable conditions will be for frost with the potential for
both clouds and winds remaining elevated through the overnight
hours. Precipitation chances look low mid to late week but will be
monitoring the potential for another low pressure system to move in
from the northwest towards the end of the week.

INDY SEVEN DAY FORECAST
Today: Clouds decreasing. High 53.

Tonight: Clear and frosty. Low 33.

Saturday: Sunny. High 59.

Saturday Night: Mostly clear. Low 40.

Sunday: Partly sunny. High 66.

Sunday Night: Partly cloudy. Low 55.

Monday: Partly to mostly cloudy, with scattered showers and storms. High 68.

Monday Night: Partly cloudy. Early evening shower and storm chances. Low 44.

Tuesday: Partly sunny. High 55.

Tuesday Night: Partly cloudy. Low 36.

Wednesday: Mostly sunny. High 59.

Wednesday Night: Partly cloudy. Low 39.

Thursday: Mainly afternoon showers High 68.

NWS CHARTS FOR TODAY/TONIGHT