An upper level weather system is forecast to move into the Lower Ohio Valley tonight into Tuesday morning. Widespread precipitation is expected to develop after sunset tonight. With cold air already in place, the initial precipitation will fall in the form of light snow, with warmer air aloft moving into portions of southern Kentucky. This warm air will cause the snow to change over to a wintry mix of rain, sleet, and snow. At this time, the best chances for a wintry mix appear to be south of the Bluegrass Parkway/Western Kentucky Parkway. North of that line, colder air will remain in place for light snow to be the predominant precipitation type. Surface temperatures are expected to remain near the freezing mark tonight and Tuesday morning, so some light accumulations of snow will be possible, mainly across Southern Indiana and Northern Kentucky, especially west of I-65. Thus, a Winter Weather Advisory has been issued for tonight for the portions of our County Warning Area shown in purple below.
At this time, 1-1.5" of snowfall is expected across the northernmost sections of the advisory area, with a snow/sleet mix into the Kentucky advisory counties. The wintry precipitation may lead to some travel problems tonight and into Tuesday morning. Surface temperatures, antecedent road conditions, and precipitation intensity will all play a role in how negatively impacted conditions become. Stay tuned to NOAA All-Hazards Weather Radio and your local media for the latest updates on this winter weather situation.