891
FXUS63 KIND 030732
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
332 AM EDT Wed Jun 3 2026

.KEY MESSAGES...

- Rain-free early summer weather with low humidity through Friday,
  highs 80-85 degrees

- Next chance for numerous/widespread showers and a few storms
  rain will be late Friday night into Sunday

- Typical early summer to start next week...moderate humidity,
  temperatures from 60s to 80s each day, showers/t-storms possible

&&

.DISCUSSION (Today through Tuesday)...
Issued at 329 AM EDT Wed Jun 3 2026

Today through Friday...

Pleasant early summer conditions will continue under Canadian
surface high pressure, stretched from Wisconsin to the Central
Appalachians this morning...that will continue to drift slowly east
through Friday.  Axis of corresponding H500 subtropical ridge will
shift from Illinois today to the Mid South by Thursday.  Surface
flow to then adjust from light east-southeasterly breezes this
afternoon...to increasing south-southwest winds Thursday...and
robust southwest breezes Friday.  Humidity to therefore rebound from
anomalously low values Tuesday...with dewpoints around 50F today and
nearing 60F by Friday night.  Broad western portion of the surface
ridge to maintain dry conditions through Friday, with afternoon
cumulus the main variable.  Expect highs to nudge from low 80s today
to mainly mid-80s on Friday.


Saturday through Tuesday...

A brief pause between established upper ridging over central North
America will allow a short wave to slowly cross the Great Lakes
Saturday into Sunday.  A broad ribbon of decent Gulf moisture with
precipitable water values mainly 1.25-1.60 inches will
correspondingly cross the CWA, and perhaps linger south of I-70 from
the stalled boundary lingering towards the Ohio Valley.  This will
translate to higher chances of showers late Friday night through
Saturday night, especially across northern zones which will be
closer to perhaps mediocre forcing...with overall lower confidence
in any appreciable rainfall.  A few thunderstorms are expected,
especially

Typical early summer conditions to prevail through next week`s first
several periods under the next upper ridge building from the
southern Plains northeastward across the Upper Mississippi Valley
into Ontario and Quebec.  The weekend short wave that should cut off
over the Mid-Atlantic, although lower confidence on how far it
retrogrades west towards, or even into the Midwest.  While this set-
up should keep most Gulf moisture suppressed to the south, a fetch
of easterly breezes is expected to advect Atlantic air...maintaining
moderate summertime humidity with dewpoints in the 60s and
seasonable to slightly above normal afternoon readings in the 80s.
Occasional chances for widely scattered diurnally-driven showers and
a couple t-storms are expected.

&&

.AVIATION (06Z TAF Issuance)...
Issued at 120 AM EDT Wed Jun 3 2026

Impacts:

- None

Discussion:

VFR conditions will persist through the forecast period as high
pressure remains the dominant weather influence over the region.

Light E/NE winds are expected through the overnight. Surface flow
will transition to E/SE by late morning in response to the center of
the high drifting into the eastern Great Lakes. Model soundings
continue to show the presence of deep subsidence and dry air...but
enough low level moisture may pivot into the region from the east by
the afternoon to at least generate a few diurnal cu. Any cu that
does form will diminish towards sunset.

&&

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

$$

AVIATION...Ryan
DISCUSSION...AGM