000 
fxus63 kind 241138 
afdind 


Area forecast discussion 
National Weather Service Indianapolis in 
638 am EST Tue Jan 24 2017 


Update... 
the aviation section has been updated below. 


&& 


Synopsis... 
issued at 253 am EST Tue Jan 24 2017 


Brief ridging will result in dry conditions today across central 
Indiana. However, the pattern will quickly change late tonight as 
the next system moves into the area. Rain will spread across the 
area on Wednesday, eventually mixing in with snow on Wednesday 
night and Thursday as colder air filters in on the back side of 
the low. Lingering moisture will keep low chances for snow in the 
forecast across the north and east through Friday. After that, 
temperatures near normal and weak upper waves will result in some 
additional snow chances over the weekend before an upper ridge 
returns on Monday. 


&& 


Near term /today/... 


Issued at 253 am EST Tue Jan 24 2017 


The main focus of the near term period will be sky cover and 
temperatures. 


Dry conditions will prevail today as weak ridging strengthens over 
central Indiana. An inversion will prevent skies from clearing out 
though until the afternoon hours. As a result, will not go any 
higher than the 40s that latest superblend is projecting for 
today's high temperatures. 


&& 


Short term /tonight through Thursday night/... 


Issued at 253 am EST Tue Jan 24 2017 


The main focus of the short term period will be precipitation 
chances and type with a low pressure system. 


Dry conditions will prevail through tonight; however, focus then 
turns to the next system tracking northeast through Illinois and 
Wisconsin. Warm advection ahead of the associated front will raise 
temperatures into the 50s on Wednesday afternoon with some rain 
showers along and ahead of it. Forcing will strengthen further 
though as an associated cold front moves through late in the day, 
increasing pops from northwest to southeast across the forecast 
area on Wednesday evening. As the colder air filters in behind 
the front, there will be a transition to a rain/snow mix on 
Wednesday night and Thursday morning. Any snow accumulations are 
expected to be minimal though, and this is a medium to high 
confidence forecast due to consistent model trends over the last 
several days. 


As temperatures slowly rise into the upper 30s on Thursday 
afternoon, any lingering precipitation over the eastern counties 
will change back to rain. Thursday night, temperatures will dip 
into the 20s, and again there will be a transition back to snow 
showers, but little accumulation. 


&& 


Long term /Friday through Monday night/... 
issued at 252 am EST Tue Jan 24 2017 


Central Indiana will see a few upper waves drop southeast across the 
area in mean western ridge and northeastern trough pattern. This 
will result in slightly below seasonable weather with snow showers 
or flurries from time to time. That said, moisture will be lacking 
somewhat, so will not go any higher than the regional blend small 
chance pops over all or parts of the forecast area Friday and Sunday 
and Sunday night. 


Upper ridge should allow for dry and seasonable weather next Monday. 


&& 


Aviation /discussion for the 24/1200z taf issuance/... 


Issued at 624 am EST Tue Jan 24 2017 


MVFR conditions could linger into the afternoon hours due to an 
inversion in place. At that point, VFR conditions will return and 
prevail through tonight. MVFR or worse will then return tomorrow 
morning at klaf/khuf/kind as the next system enters the area. Rain 
will not overspread taf sites until tomorrow afternoon, so will 
not mention in this taf period. Winds will initially start off 
northwesterly and then shift to the south/southeast becoming a 
bit strong at kind out of the south/southwest tomorrow morning 
with sustained speeds of 10 to 12 kts and gusts to 22 kts. 


&& 


Ind watches/warnings/advisories...none. 


&& 


$$ 


Synopsis...tdud 



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