Snow showers are possible Saturday and Sunday in the D.C. area, but accumulations shouldn't be an issue.
This weekend will be sandwiched between disturbances. One is anticipated to visit tomorrow morning through the afternoon and the next will push through the area by late Sunday into Monday morning. Snow is possible in each system, but with temperatures at or slightly above freezing, accumulating snow isn't likely, especially on the roads.
- Friday night 12ZGFS 500mb Vorticity forecast (Courtesy: NEXLAB Models)
Here's the set-up. Saturday's system has been passing over Texas today bringing a light mix of rain, freezing rain and snow across the state. The disturbance will push into the D.C. area by tomorrow morning, though the greatest energy associated with it will be to the south of D.C., only allowing for light precipitation in our area but heavier rain over the Carolinas along the coast.
- Precipitation Forecast by the WPC through Monday morning
The second wave of energy is streaming into the Pacific Northwest and will eventually affect the region by late Sunday. The circled area above in the top graphic is the beginning of the disturbance, which will evolve as another trough digs into this system from Canada and moves across the Midwest to the east coast this weekend.
One big thing to note on the second system is the precipitation it is bringing to the west coast. Though Southern California is still waiting for heavier precipitation, the northern half of the state will see the chance for up to 3 inches of rain locally which is phenomenal for the drought conditions. I just hope the soil isn't too parched to soak it up!
By the time the disturbance travels to the Mid Atlantic, it's not expected to be very strong, and it will be quite moisture-starved after exiting the northern Rockies, so anything that falls will be very light. The timing brings the possibility for light rain and snow by the evening hours Sunday into Sunday night.
Oddly enough, one of the model simulates light snow heading for the D.C. area Monday morning. I'm not quite buying that at the moment as I currently do not see the upper-level support for it. It's something we can watch through the weekend but nothing more.
- 6-10 Day Temperature Outlook from the CPC
Above is the 6-10 day temperature outlook showing continued cooler than normal temperatures in the eastern half of the country. The pattern doesn't look to shift colder than normal temperatures away from the D.C. area just yet, but it's also not conducive to the extremely cold air we saw in January. I think it's safe to say we can all be happy with slightly below normal temperatures rather than the single digits we experienced not too long ago!