Area Forecast Discussion
Issued by NWS Indianapolis, IN

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FXUS63 KIND 260635
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
235 AM EDT Tue Sep 26 2017

.UPDATE...
The LONG TERM 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 /Friday Through Monday/...
Issued at 234 AM EDT Tue Sep 26 2017

Ensembles in good agreement on the main weather details during this
period. Appears a short wave trough will drift across the Great
Lakes on Friday. Ensembles suggest the precipitation threat with
this feature will remain off to the northeast of the local area.

After Friday, it appears upper ridging will again build over the
Ohio Valley, as deep long wave troughing develops over the Rockies.
The presence of the upper ridge suggests little threat for
precipitation over the weekend and on into next Monday. Will go with
a dry extended.

&&

.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....JAS
AVIATION...TDUD



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