Winter Weather Advisory expires – precipitation diminishes mid-morning

Update9:15AM CST…

As of 9AM CST the Winter Weather Advisory had expired and the wintry mix of precipitation was fast-fading. As conditions improve temperatures will be on the rise and the sun should break through, making for a partly sunny St. Patrick’s Day.

 

Update 6:15AM CDT…

The wintry mix of light rain, freezing rain, sleet and wet snow across northeast Illinois and northwest Indiana will gradually diminish this Saturday morning as temperatures slowly edge above freezing area-wide, and low pressure to our south gradually eases away from our area. Check the Regional Weather radar mosaic below for the latest precipitation pattern.

 

A Winter Weather Advisory is in effect for most of the Chicago area calling for a wintry mix of freezing rain, snow and sleet from 11PM CDT this evening until 8AM CDT Saturday morning (purple-shaded area on the highlighted map).  With temperatures at the surface hovering near the 32-degree mark and colder air aloft, a wintry mix of rain, sleet, freezing rain and wet snow will likely occur across our area later tonight into Saturday morning, possibly even spilling over into counties along the Illinois-Wisconsin state line not currently included in the Advisory.

Very hazardous driving conditions are likely to develop in the overnight hours, as low pressure approaches from the west and passes to our south tonight and early Saturday, spreading the wintry mix of rain, freezing rain, sleet and wet snow across this area. The freezing rain will accumulate on elevated surfaces such as cars, decks and trees as well as spots on overpasses, bridges, highways, roads and paved surfaces, especially those that are untreated, while the sleet and wet snow could contribute to sick and slushy conditions. Weather should improve from the north and west as precipitation moves off to the east early Saturday forenoon.

If you anticipate travel this evening and overnight into Saturday morning, check on latest advisories and statements to best prepare for your particular journey.