Area Forecast Discussion
Issued by NWS Indianapolis, IN

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000
FXUS63 KIND 260350
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
1150 PM EDT Mon Sep 25 2017

.UPDATE...
The AVIATION Section has been updated below.

&&

.SYNOPSIS...
Issued at 324 PM EDT Mon Sep 25 2017

Unseasonably warm temperatures will continue through Tuesday with
more seasonable weather arriving after a weak front passes through
on Wednesday.  Dry conditions are expected through much of the
period with only slight chances for rain on Wednesday and next
Monday.

&&

.NEAR TERM /Rest of Tonight/...

Issued at 1005 PM EDT Mon Sep 25 2017

UPDATE...
Lowered overnight lows up to 3 degrees across the forecast area,
but no other changes.  Updated grids have been sent.

PREVIOUS DISCUSSION...
Dry conditions are expected through the period with the largest
forecast challenge being the chance for fog tonight.  Best chances
look to be across southern Indiana where the moisture will be
highest.  Lows will be in the mid 60s and winds will be light and
variable.

&&

.SHORT TERM /Tuesday through Thursday/...

Issued at 324 PM EDT Mon Sep 25 2017

High pressure will begin to weaken ahead of a weak cold front that
is expected to pass through on Wednesday.  With weak forcing and low
moisture, chances for rain are small, but left in slight POPs for
Wednesday afternoon.  More seasonable weather will follow Wednesday
night and through the rest of the week.

Highs will be in the low 90s Tuesday and will range from the upper
70s to lower 80s on Wednesday.  Lows will be in the mid 60s Tuesday
night and the 50s Wednesday night.

&&

.LONG TERM /Thursday Night Through Monday/...
Issued at 253 PM EDT Mon Sep 25 2017

Models are close enough that the model blend initialization
was accepted for most items.

An upper trough will move through the area Friday bringing another
cold front with it. Moisture is limited though, so the blend`s dry
forecast looks reasonable.

High pressure then builds in and will keep the weekend dry.

Some models differ on whether a system will bring any rain on
Monday. Most models are dry, so will lower the blend`s PoPs into the
slight chance category for now. Confidence is low here.

Temperatures will be seasonable through the period.

&&

.AVIATION /Discussion for the 26/0600Z TAF Issuance/...

Issued at 1149 PM EDT Mon Sep 25 2017

VFR conditions are expected for the duration of TAF period. Will
not completely rule out MVFR fog formation at outlying sites early
this morning, but confidence remains low. Meanwhile, winds will
generally be south/southeasterly at 5 to 10 kts.

&&

.IND WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$

SYNOPSIS...White/50
NEAR TERM...White/50/TDUD
SHORT TERM...White/50
LONG TERM...50
AVIATION...TDUD



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