...Ice and Snow Possible this Evening...

A wintry mix of precipitation can be expected to slowly work

southeast across parts of the Quad State region, persisting into

the evening and overnight hours.

The vast majority of the region will see just rain through sunset

with temperatures in the lower 40s. but some locations in

southeast Missouri and southwest Illinois could see patchy sleet

occur on the leading edge of the rain.

As temperatures fall after sunset, the rain will gradually mix

with then change over to sleet, freezing rain and snow during the

evening hours. This is especially true for southeast Missouri and

southwest Illinois.

The best chance for seeing any accumulating sleet and snow this

evening will be along and north of a line of Piedmont and

Perryville Missouri, onward to Ava, DuQuoin, Mount Vernon, and

Cisne Illinois. Snowfall amounts could range from one to three

tenths before the precipitation ends overnight.

In addition to the snow and sleet, up to a tenth of an inch of ice

may accumulate on elevated surfaces along and northwest of a line

from Piedmont to Marble Hill and Perryville Missouri.

The coldest air will reside along the foot hills of southeast

Missouri and parts of southwest Illinois through midnight, before

working southeast to the Ohio and Wabash Rivers by 3 am CST.

Patches of light freezing rain will be possible over southern

Illinois and the remainder of southeast Missouri during this time.

However, as the freezing air moves in, most of the measurable

precipitation will be exiting the area overnight. Very little, if

any freezing rain accumulation is expected.

As temperatures fall into the middle and upper 20s overnight, any

precipitation left on untreated roads and bridges will freeze and

may become slick and hazardous. For those traveling in southeast

Missouri and southern Illinois late tonight or early Tuesday, be

watchful for black ice and exercise caution while driving.

Another winter system is slated to return to the Quad State region

Wednesday night into Thursday, so travelers and residents should

take measures to prepare for more wintry weather later this week.

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