National Weather Service Raw Text Product

Displaying AFOS PIL: AFDIWX Received: 2017-10-12 08:50 UTC

FXUS63 KIWX 120850

Area Forecast Discussion
National Weather Service Northern Indiana
450 AM EDT Thu Oct 12 2017

Issued at 447 AM EDT Thu Oct 12 2017

Expect cloudy skies with occasional drizzle and patches of fog 
through late morning. High temperatures will be in the upper 50's
and low to mid 60s. Clouds will be on the decrease tonight, giving
way to partly cloudy skies Friday. Highs Friday will climb into
the 70's. Rain chances and perhaps even a few thunderstorms will 
move into the northwest late Friday night, and into the remainder
of the forecast area Saturday and Sunday. Highs will be in the 
upper 60's and 70's.


.SHORT TERM...(Today and Tonight)
Issued at 416 AM EDT Thu Oct 12 2017

A weak low pressure area was over east Ohio and was moving east 
early this morning. Areas of light drizzle and patchy fog were still 
quite extensive west of this system over Indiana and northwest Ohio. 
Have extended the mention of patchy fog and light drizzle given the 
latest obs and trends. The drizzle should end this moving as the low 
moves east and as drier air spreads southwest across the area. Highs 
today will be a little below normal as cool air continues to spread 
over the area. Most of the clouds should linger tonight with lows 
holding in the 50s.


.LONG TERM...(Friday through Wednesday)
Issued at 416 AM EDT Thu Oct 12 2017

Temperatures will rise well above normal again ahead of the next 
system that will arrive this weekend. The ongoing forecast appears
on track as the latest models continue to favor the low pressure 
area moving across Wisconsin into Upper Michigan by Sunday. Very 
favorable upper level support will spread over the area Sunday. 
Storms with gusty winds are possible with some storms possibly 
becoming marginally severe. Otherwise, very limited cold air
advection will be behind this system allowing temperatures to 
quickly recover and rise well above normal again early next week.


.AVIATION...(For the 06Z TAFS through 06Z Thursday Night)
Issued at 144 AM EDT Thu Oct 12 2017

It looks as though we'll be dealing with the lingering effects of 
the exiting low pressure system through the TAF period, resulting in 
continued IFR/LIFR conditions. At the surface, we have a lingering 
low pressure trough and associated moisture that models suggest will 
stick around for the next day or so. Subsidence aloft from the 
exiting upper level wave/incoming ridge will keep moisture trapped 
below-and that keeps occasional light drizzle, patchy fog/BR, and 
lower ceilings in place through later Thursday morning. We'll see 
some improvement Thursday, primarily towards mid afternoon as 
available moisture slowly dwindles. As drier air makes its way in at 
the surface, we'll see an improvement to MVFR by Friday evening.




SHORT TERM...Skipper
LONG TERM...Skipper

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