NASHVILLE, Tenn. (AP) — A slow-moving cold front is bringing a variety of weather cautions to Tennessee, including a possibility of measurable snow.

Meanwhile, heavy rain on the southern Cumberland Plateau and in East Tennessee caused some school districts to cancel classes Monday, including Warren County schools.

A search was under way Monday for three young kayakers missing in the Pocket Wilderness in Hamilton County. The National Weather Service said 4.04 inches of rain had fallen in Chattanooga from early Sunday until 10 a.m. EST Monday.

The National Weather Service has posted a winter storm watch for counties along the Mississippi and Alabama borders, from just east of Memphis into southern Middle Tennessee. Forecasters say up to 4 inches of snow could fall between Monday evening and Tuesday morning, the heaviest after midnight.

A winter weather advisory for 1 to 3 inches of snow is in place for much of the rest of West Tennessee

A flash flood watch extends from just east of Nashville across the northern plateau. A flash flood warning is in effect for parts of the southern plateau and the Chattanooga area.

A flood watch is posted for the Tennessee Valley, including Knoxville.