Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 211954

Area Forecast Discussion
National Weather Service Northern Indiana
254 PM EST Sat Jan 21 2017

Issued at 251 PM EST Sat Jan 21 2017

After record to near record highs todays, mild temperatures
will continue into Sunday. Areas of fog are likely tonight with
dense fog developing over northwest areas. The fog is expected
to lift by late Sunday morning. After a good chance for rain
Sunday night into Monday, a return to colder and more seasonable
conditions is expected by the end of the upcoming week.


.SHORT TERM...(This Evening through Sunday)
Issued at 249 PM EST Sat Jan 21 2017

Very moist air will continue to spread northeast into the area
with dew point temperatures rising into the lower to mid 50s. A
weak front will approach from the northwest with conditions
becoming favorable for fog formation after midnight. After
coordination with neighboring offices, have issued a dense fog
advisory from 1 AM EST until 10 AM EST Sunday. Crossover temps in
the lower 50s along with high resolution WPC guidance supports
dense fog developing over northwest areas overnight.


.LONG TERM...(Sunday Night through Saturday)
Issued at 249 PM EST Sat Jan 21 2017

Mild weather will persist into Wednesday followed by much
colder temperatures during the latter half of the upcoming week as
a longwave trof becomes established across the interior of North
America. The GFS and ECMWF have trended west with the track of the
upper low Sunday night and Monday, bringing more favorable rain
chances to the forecast area. Have raised rain chances during this
period in this regard. Otherwise, lake effect snow chances are
favorable from Thursday into the weekend as 850 mb temperatures
fall below -10C.


.AVIATION...(For the 18Z TAFS through 18Z Sunday Afternoon)
Issued at 1154 AM EST Sat Jan 21 2017

VFR flight conditions expected will continue through the evening
with winds out of the south. By 06z showers develop near KFWA but
should stay south of KSBN. Patchy fog/mist develops after midnight
decreasing visibility and ceilings down to MVFR flight criteria
and at times IFR where fog becomes dense. By morning Sunday fog
should begin to lift but ceilings will remain low MVFR.


IN...Dense Fog Advisory from 1 AM EST /midnight CST/ to 10 AM EST /9
     AM CST/ Sunday for INZ003>009-012>017-020-022>024.

MI...Dense Fog Advisory from 1 AM to 10 AM EST Sunday for MIZ077>081.

OH...Dense Fog Advisory from 1 AM to 10 AM EST Sunday for OHZ001-002.



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

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