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Illinois, Williamson

Special Statement

Statement as of 2:28 PM CST on December 17, 2014

Expires 5:00 PM EST on December 17, 2014


... A light wintry mix of precipitation is possible late tonight
and early Thursday morning...

Incoming precipitation overnight will be light... falling generally
as little to no impact rain or light snow.

However... as temperatures cool overnight... some pockets of a
wintry mix of light sleet or freezing rain may mix in with
precipitation at times... but should have little to no impact on
roadways.

The primary effect will be on untreated roadways or elevated
surfaces that dip to freezing and have residual moisture on the
ground... allowing for isolated slick patches to develop. No
widespread hazardous weather is anticipated at this time.





916 am CST Wed Dec 17 2014

... Light snow... sleet and freezing rain likely in some areas
tonight...

A weak upper level disturbance will lift northeast into the mid
Mississippi River valley later tonight. This will likely create
light wintry precipitation as it moves over a cold dome of high
pressure near the surface. Mainly light snow is expected to occur
north of a Marble Hill Missouri to Vienna Illinois to Greenville
Kentucky line. A light wintry mix and even some light freezing rain
will be likely south of that line. Travel should not be
impacted... mainly due to the relative warm pavement temperatures and
air temperatures nearing the freezing mark. The precipitation will
taper off in most locations after sunrise Thursday.









912 am CST Wed Dec 17 2014

... Light snow... sleet and freezing rain likely in some areas
tonight...

A weak upper level disturbance will lift northeast into the mid
Mississippi River valley later tonight. This will likely create
light wintry precipitation as it moves over a cold dome of high
pressure near the surface. Mainly light snow is expected to occur
north of a Marble Hill Missouri to Vienna Illinois to Greenville
Kentucky line. A light wintry mix and even some light freezing rain
will be likely south of that line. Travel impacts are expected to be
minimal... mainly due to the relative warm pavement temperatures and
air temperatures very close to or just below the freezing mark.
However... some untreated elevated roadways could develop icy patches
very close to... or during... the morning commute. The precipitation
will taper off in most locations after sunrise Thursday.






445 am CST Wed Dec 17 2014

... Light snow... sleet and freezing rain likely in some areas
tonight...

A weak upper level disturbance will lift northeast into the mid
Mississippi River valley later tonight. This will likely create
light wintry precipitation as it moves over a cold dome of high
pressure near the surface. Mainly light snow is expected to occur
north of a Marble Hill Missouri to Vienna Illinois to Greenville
Kentucky line. A light wintry mix and even some light freezing
rain will be likely south of that line. Travel impacts are not
expected to minimal... mainly due to the relative warm pavement
temperatures and air temperatures very close to or just below the
freezing mark. However... some untreated elevated roadways could
develop icy patches very close to... or during... the morning
commute. The precipitation will taper off in most locations after
sunrise Thursday.



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