Lafayette, Indiana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

596
FXUS63 KIND 191812
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
212 PM EDT Sun Apr 19 2026

.KEY MESSAGES...

- Breezy today with wind gusts of 30 to 40 mph this afternoon

- A Freeze Warning is in effect tonight into early Monday for the
  northern half of central Indiana; A Frost Advisory is in effect
  tonight for the remainder of central Indiana.

- Warming trend beginning on Tuesday, with storm chances Tuesday
  night into Wednesday

&&

.DISCUSSION (This evening through Sunday)...
Issued at 211 PM EDT Sun Apr 19 2026

Central Indiana has been under a pattern change the last 24
hours as a large low pressure system has pushed off to the northeast
allowing cool northwest flow to reach the Ohio Valley. That said,
low level winds have backed towards W/WSW throughout the day ahead
of a weak mid level short wave, embedded within the CAA. Confluence
along this wave will tap into the limited moisture to aid in cumulus
development throughout the afternoon. A modest low level jet and
deep mixing will create gusty winds this afternoon, peaking around
40 MPH.

While any rain should be sparse, steep lapse rates combined with the
forcing might just be enough to get a few isolated showers over NE
portions of central Indiana. The steep lapse rates will promote good
mixing, which will bring down some of the stronger winds aloft. This
will likely result in wind gusts peaking in the 30 to 40 mph range
this afternoon. The inverted V soundings indicate the potential for
higher gusts from any showers that do develop.

Reinforced CAA behind the wave along with broad AVA will aid in
pressure gains throughout the column. This will bring mostly clear
skies and keep temperatures below normal. All of central Indiana is
likely to be slightly cooler tonight, dropping temperatures into the
low to mid 30s over most of the area. Given this, a Freeze Warning
has been continued for the northern half of central Indiana, with a
a Frost Advisory for the rest of the area.

The rest of the forecast period will be focused on temperature
recovery as deep troughing over the Atlantic Coast helps induce
ridging upstream and strong WAA throughout the middle of the week. A
weak shortwave will pass through late Tuesday into Wednesday
providing chances for showers and storms, but otherwise most of the
forecast period prior to Friday night will remain dry. Temperatures
will begin cool on Monday but quickly increase within the
aforementioned WAA, reaching back above normal by Wednesday with
highs in the mid to upper 70s.

Late week, deep pressure depletion within a coupled upper level jet
will likely provide increases in rain chances late Friday through
the beginning of the weekend. Dynamics aloft should be stronger
within this system, leading to increases in potential hazards, but
there is still a lot of uncertainty regarding the systems evolution
and progression. As of the latest ensemble run, the best chances for
severe weather will likely remain west of central Indiana.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 142 PM EDT Sun Apr 19 2026

Impacts:

- Wind gusts near 30kt this afternoon with potentially higher gusts
- Isolated rain shower possible this afternoon

Discussion:

A cold front will move into the area this afternoon. Winds will veer
to west and northwest through 00Z Monday as the front moves through.
Stronger winds aloft will mix down, with gusts around 30kt expected
this afternoon. If mixing gets higher than expected, stronger gusts
may occur.

Isolated showers will be with the front, but coverage will be too
low to mention. VFR ceilings will develop with the front.

Surface high pressure rapidly builds in tonight allowing winds to
decrease substantially. Light and variable winds and clear skies are
anticipated by 08z.


&&

.IND WATCHES/WARNINGS/ADVISORIES...
Freeze Warning from 2 AM to 9 AM EDT Monday for INZ021-028>031-
035>049-054>057.

Frost Advisory from 2 AM to 9 AM EDT Monday for INZ051>053-
060>065-067>072.

&&

$$

AVIATION...50/Eckhoff
DISCUSSION...Updike