WEATHER BLOG: Wintry Sunday
It is cold enough for precipitation to start out as snow, which is expected to begin mid to late morning. There will be a lot of dry air in place with the surface high sitting to the north. As a result, there will be quite a bit of evaporation before the column moistens up to allow snow to reach the surface.
Once the snow begins it will persist through mid to late afternoon before the mid-level warms enough to allow for a change to sleet. Our thinking is still for 1-2″ of snow and sleet. Sleet is expected to go to freezing rain during the evening hours with temperatures in the low levels struggling to warm due to the surface high to the north keeping the colder air locked in place.
Ice accumulation will likely be under 0.10″ in the city. Heavier ice accumulation, up to 0.25″, is a threat to our west. In the city, temperatures will warm to above freezing later Sunday night. However, areas west and north of the city could still see some icing into the early morning hours Monday. Roads in and around Baltimore should be wet for the start of the morning commute, but it still could be slow going. There will be some rain around Monday morning followed by some spots of drizzle for the afternoon.