Lafayette, Indiana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

570
FXUS63 KIND 111853
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
253 PM EDT Sat Jul 11 2026

.KEY MESSAGES...

- Scattered to numerous showers and thunderstorms continue into
  tonight

- Localized heavy rain and minor flooding being the primary threats

- Drier and increasingly warm conditions return late Sunday through
  the middle of next week as high pressure builds

- Heat indices near 100 degrees on Wednesday

&&

.DISCUSSION (This evening through Saturday)...
Issued at 252 PM EDT Sat Jul 11 2026

Rest of This Afternoon into Early Evening...

Scattered showers and thunderstorms continued across central Indiana
early this afternoon. Aloft, an upper trough and a few impulses were
helping generate the convection, while a cold front was aiding
forcing at the surface. Steering flow is weak, so the convection is
slow moving. With plentiful moisture, efficient rainfall processes
have lead to localized heavy rain and flooding.

While scattered convection will continue all areas this afternoon
with the features mentioned above, focus should shift to the
southern forecast area for the most coverage of convection. This is
because the upper trough axis will move through this area while the
surface front sags south.

Will have likely PoPs south into early evening with lower PoPs
north. Heavy rain and flooding remain the primary threat with the
convection. Cannot rule out a strong storm with gusty winds, but
feel odds are low given the extensive cloud cover that persists.

With the spin from the upper trough/vort max and the moist
atmosphere, wouldn`t be surprised if a funnel cloud forms along a
boundary, mainly south. These are not expected to touch the ground.

Late this evening through Sunday...

Chances for convection will continue to diminish overnight with the
upper trough axis moving south of the area. Still cannot rule out a
shower far south.

On Sunday, most areas will remain dry with the majority of the
forcing south of the area. However, the upper trough will still be
close enough for an isolated shower or storm to form in the far
south. Lows tonight will be in the mid to upper 60s with highs
Sunday in the lower to middle 80s.

Monday through Wednesday...

An upper high across the upper Mississippi Valley will build into
the area into mid-week. Isolated convection may linger in the
extreme southeast Monday before the high builds in. Otherwise, the
high will keep central Indiana dry through Wednesday.

Temperatures will warm as the high builds in, with lower 90s likely
most areas by Wednesday. Thanks in part to evapotranspiration,
dewpoints will be in the lower 70s most areas by Tuesday afternoon
and will continue to be so into Wednesday. Heat indices will be in
the upper 90s to near 100 Wednesday afternoon.

Thursday and beyond...

Trends continue to show the high retrograding to the west some,
allowing northwest flow to return to central Indiana. This looks to
occur mainly Friday and Saturday. Upper energy riding around the
high could bring some convection, and if the high retrogrades
enough, a surface cold front may get close to the northeast
forecast area.

Will go with some low PoPs as early as Thursday, but the higher
chance category PoPs will be on Friday and Saturday. The highest
PoPs will be east, farthest from the high.

Highs will still be around 90 on Thursday and Friday with heat
indices in the middle and upper 90s. Saturday will have highs in the
upper 80s.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 105 PM EDT Sat Jul 11 2026

Impacts:

- MVFR ceilings at times this afternoon in and near showers
  and storms. IFR possible

- Scattered to numerous convection this afternoon, with most
  coverage expected at southern sites

Discussion:

Pesky IFR ceilings remain scattered about the area with a moist
lower atmosphere and with showers around. MVFR is more widespread
but not always predominant. Will keep a TEMPO for MVFR ceilings this
afternoon with a scattered IFR layer. Ceilings will improve this
evening with cloud cover diminishing. Can`t rule out patchy fog
overnight but not confident enough to add.

Convection will continue this afternoon and then diminish this
evening. IFR and worse are possible in convection.


&&

.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

AVIATION...50
DISCUSSION...50