824
FXUS63 KIND 300157
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
957 PM EDT Fri May 29 2026

.KEY MESSAGES...

- Dry weather expected today through the middle of next week.

- Near-average temperatures through the weekend into next week.

&&

.FORECAST UPDATE...
Issued at 957 PM EDT Fri May 29 2026

Forecast is in great shape and no changes were needed. High pressure
will continue dry weather with only passing high clouds and light
variable winds expected through much of the night. Saturday morning
lows will be in the mid 50s to near 60.

&&

.DISCUSSION (This evening through Friday)...
Issued at 214 PM EDT Fri May 29 2026

An Omega Block pattern is developing aloft, placing an amplified
upper level ridge over the central Plains this weekend through a
majority of next week. Subsidence downstream of this ridge will
continue to promote pressure rises, and high pressure over the Great
Lakes region. To the west, an elongated pressure trough with gulf
enhanced moisture will lead to numerous showers and storms across
the Mississippi and Missouri Valleys.

Subsidence will be present over central Indiana for the rest of
today and tonight due to the combination of upper level ridging and
the high to the east. This will work to dry out the surface layer
and increase mixing throughout the afternoon, but upstream cloud
cover and weak easterly CAA will attempt to counteract surface
warming. The combination of all of this should lead to highs in
the low 80s for most of the region; NW portions may approach the
mid 80s due to less easterly CAA.

This same setup will likely remain for tomorrow due to the blocking
pattern, with the only uncertainty being how far east the pressure
trough will reach tomorrow. The majority of ensemble solutions keep
any rainfall west of central Indiana, but there is a low chance a
stray shower or storm is able to reach far SW portions of the state
tomorrow afternoon and evening.

Upstream, a weak surface low is expected to develop and progress
along the surface trough, reaching the Ohio Valley late Sunday into
Monday. This may allow for ridging to break down just enough for
weak lift and showers over SW portions of the area. Confidence is
very low given the Omega Block pattern is difficult to break down.

That said, confidence is increasing in this vort max reaching the
Atlantic coast and strengthening, inducing stronger easterly flow
towards the middle of next week. In return, this would push the
Great Lakes high westward, creating very dry conditions over central
Indiana from Tuesday through Thursday of next week.

&&

.AVIATION (00Z TAF Issuance)...
Issued at 803 PM EDT Fri May 29 2026

Impacts:

- None

Discussion:

VFR conditions expected.

Ridging aloft and surface high pressure over the Great Lakes will
keep VFR conditions through the period. Upper level clouds will
continue to pass through around 25000ft. Winds will remain light
(less than 10kt) out of the SE late this evening, switching to the
E/ENE by morning.


&&

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

$$

UPDATE...KF
AVIATION...KF
DISCUSSION...Updike