Revised forecast: 4-6 inches of snow due overnightFree

First, “Santa Claus is Coming to Town.”

Next, “White Christmas.”

The National Weather Service in Portland continues to predict snow will fall and accumulate in Clark County beginning this evening as a large system brings cold weather into the region that could last for days.

The latest winter storm watch predicts the snow will start later tonight, rather than this evening. It also predicts four to six inches of snow will fall between late Saturday and 4 a.m. Monday. The snow will taper off over time.

Higher elevations will get more snow, though the pattern will be showery, meaning some areas at the same elevation may get more, and others will get less.

The temperature at Pearson Field in Vancouver was 38 degrees at 4 p.m. Saturday but is expected to plunge as the cold, wet weather arrives. Sunday night’s low is forecast to be 18 degrees in Vancouver.

Driving is expected to be difficult; motorists are urged to avoid traveling if possible.

In anticipation of snow, C-Tran announced The Vine is being served with regular buses; the Turtle Place terminus in downtown Vancouver is closed.

If slick roads materialize, The Columbian will suspend home delivery of newspapers, and deliver them when it is safer for carriers to be on the road. Access to our e-paper replica newspaper and our website are free for print subscribers; visit myaccount.columbian.com to set up your account.