Area Forecast Discussion
Issued by NWS Indianapolis, IN

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
FXUS63 KIND 222241

Area Forecast Discussion
National Weather Service Indianapolis IN
641 PM EDT Sat Apr 22 2017

The NEAR TERM and AVIATION sections have been updated below.


Issued at 211 PM EDT Sat Apr 22 2017

Elongated west-east mid/upper level trough centered over MO will
swing southeastward through tonight into TN extending southwest
into LA. Water Vapor imagery shows that southwest IN is now being
dry slotted at mid levels which is pushing any leftover
precipitation eastward. High pressure from the Plains into the
southwestern Great Lakes will clear our skies out after midnight
across the region.


.NEAR TERM /Tonight/...

Issued at 641 PM EDT Sat Apr 22 2017

Drier air is winning the battle, so removed any lingering PoPs
across the extreme southern forecast area. Also nudged down sky
cover some based on latest trends seen on satellite.

Previous discussion follows...

With precipitation moving out of the southern parts of our forecast
area this evening and skies clearing as High pressure moves into the
region, expect temperatures to fall into the lower-mid 40s from
north to south across the area. Only some lingering mid level clouds
should remain across our southern counties towards morning with
lightening northeasterly winds.


.SHORT TERM /Sunday through Tuesday/...

Issued at 211 PM EDT Sat Apr 22 2017

High pressure will extend from the south central Great Lakes
southward into the lower MS valley keeping the area dry and
pleasant for the next few days. We will be between storm systems,
in fact with one moving up the east coast, and the next weather
system for us developing over the High Plains. Temperatures will
be around normal for Sunday with highs in the mid 60s/lows in the
mid 40s, then warm up a little each day into Tuesday with highs in
the low-mid 70s and lows around 50 degrees.


.LONG TERM /Tuesday Night Through Saturday/...
Issued at 231 PM EDT Sat Apr 22 2017

Ensembles suggest a short wave trough will lift through the western
Great Lakes around next Wednesday, accompanied by a surface frontal
system. Some of the members suggest front may stall out in the
vicinity into Thursday, due to developing upper ridge over the East
Coast. Will keep PoPs in the forecast for both Wednesday and
Thursday for now to cover the potential of a slower or stalling

Otherwise, there are still some differences among the ensembles as
to how strong the developing East Coast ridge becomes by the end of
next week. Overall, ensembles look very wet towards the end of next
week, so will continue PoPs for those days as well.


.AVIATION (Discussion for the 230000Z TAF Issuance)...
Issued at 641 PM EDT Sat Apr 22 2017

VFR conditions expected through the period.

Drier air flowing in from the northeast continues to eat away at
clouds, especially at low and mid levels. Thus expect mainly high
clouds for this evening, and even those should diminish overnight.
Only some high clouds are expected again for some areas Sunday.

Winds will remain from the northeast around 10KT.




AVIATION...50 is the U.S. government's official web portal to all federal, state and local government web resources and services.