Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 222058

Area Forecast Discussion
National Weather Service Northern Indiana
358 PM EST Sun Jan 22 2017

Issued at 355 PM EST Sun Jan 22 2017

Areas of fog, dense in spots, are likely through this evening in
portions of far southwest Lower Michigan and northwest Indiana.
Afternoon highs today will generally be in the 50s south of US 30
and cooler north due to persistent fog. A weather system will
bring a good chance for rain later tonight into Monday. Then a
trend towards colder, more seasonable conditions, is expected
through the rest of the week.


.SHORT TERM...(This Evening through Monday)
Issued at 354 PM EST Sun Jan 22 2017

Dense fog had lifted temporarily over far southwest Lower Michigan
into Northern Indiana, although visibilities were a mile or less in
a number of spots. Have extended and expanded the dense fog advisory
tonight after coordinating with surrounding offices. Given the
latest trends and high resolution models, fog should become dense
over much of the area overnight. At the same time, the northwest
fringe of a strong weather system to the south will bring a chance
of rain to the area tonight into Monday. The mild pattern continue
with highs Monday well into the 40s.


.LONG TERM...(Monday Night through Sunday)
Issued at 354 PM EST Sun Jan 22 2017

Mild weather will persist into Wednesday followed by much colder
temperatures starting Thursday as a longwave trof becomes
established across the interior of North America. Highs will be
falling back to near normal which will feel chilly with the recent
mild weather. Otherwise, lake effect snow chances are favorable from
Thursday into the weekend as 850 mb temperatures fall below -10C.
Delta T values should rise to between 12C and 15C with some snow
accumulations likely downstream of Lake Michigan.


.AVIATION...(For the 18Z TAFS through 18Z Monday Afternoon)
Issued at 1208 PM EST Sun Jan 22 2017

Widespread fog will remain in place over northeast portions of
Indiana for the rest of the afternoon. As a result LIFR conditions
at KSBN with visibility below 1 SM expected until 00z and
remaining IFR for the remainder of the forecast period. At KFWA
areas of fog will remain north of the terminal for the beginning of
the forecast period. But it will progress southward around 00z and
associated with light rain will decrease flight conditions to MVFR
and trend to IFR by 02z and likely remain IFR until the end of the
forecast period.


IN...Dense Fog Advisory from 8 PM this evening to 9 AM EST Monday for

     Dense Fog Advisory until 9 AM EST /8 AM CST/ Monday for

MI...Dense Fog Advisory from 8 PM this evening to 9 AM EST Monday for

     Dense Fog Advisory until 9 AM EST Monday for MIZ077>080.

OH...Dense Fog Advisory from 8 PM this evening to 9 AM EST Monday for

LM...Dense Fog Advisory until 9 AM EST Monday for LMZ043-046.



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

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