Update at 4:20 p.m. — Crews are now planning on treating Arlington’s roads starting at some point between 9:00 and 10:00 tonight, as rain changes to sleet. Officials say commuters should expect wet main roads and slushy side roads in time for the morning rush. The warmth over the past couple of days means that road temperatures are well above freezing, which should help to melt some of the accumulation, officials say.

The National Weather Service has issued a Winter Weather Advisory as a storm closes in on the Washington area. Local accumulations of 2-5 inches are expected as rain changes over to sleet and snow overnight.