Winter Storm Octavia is unloading snow and ice along a broad west-to-east swath from the nation's heartland to the Mid-Atlantic coast early this week.

This is creating hazardous winter driving conditions on several major highways. Below are some timetables to keep you informed of what's ahead for major cities affected by the storm.

The charts show our forecast starting at the top of the next hour from now, and every three hours after that for the next 12 hours. Sustained winds, air temperatures and precipitation or sky conditions are shown.

First, let's take a look at the Interstate 40 corridor from Arkansas to western North Carolina. (Additional North Carolina cities are in the I-85 table below.)

Winter Storm Octavia Timing: Interstate 40

(Forecast conditions for major cities along the I-40 corridor, listed from west to east.)

Next, let's take a look at the Interstate 64 corridor along its full length from St. Louis to Norfolk, Virginia.

Winter Storm Octavia Timing: Interstate 64

(Forecast conditions for major cities along the I-64 corridor, listed from west to east.)

Here are some cities along the Interstate 85 corridor, where Octavia arrived late Monday afternoon.

Winter Storm Octavia Timing: Interstate 85

(Forecast conditions for major cities along the I-85 corridor, listed from north to south.)

And finally, let's take a look at the Interstate 95 corridor from Boston to Washington, where Octavia will perform its wintry finale.

Winter Storm Octavia Timing: Interstate 95

(Forecast conditions for major cities along the I-95 corridor, listed from north to south.)

Stay with The Weather Channel and weather.com as we track Winter Storm Octavia.

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A woman walks through drifting snow in Cambridge, Mass., Sunday, Feb. 15, 2015. (AP Photo/Michael Dwyer)