Wednesday brought such piddly amounts of snow which got the twitter folk hashtagging #flurrygeddon. We think more of the same will be experienced Friday night into Saturday morning as we head into the weekend. This system will definitely pack a little more of a punch though as a very strong cold front dives into the region and a coastal low looks to intensify off the east coast. Here is a video update on the system-at-large which will visit us for the start of the weekend.
Thoughts on this system: This cold front is the real deal and will push in what will probably be some of the coldest air of the winter. The chance exists for Sunday to be the second or third coldest day of the winter with highs in the mid to upper 30s and lows in the teens and 20s. In addition, the Great Lakes region will have the potential for some heavy snows as this extremely cold airmass makes its way south.
- Colder 850mb temperatures slide into the area Saturday morning
Things working against the D.C. area if you like snow: With the mild start, rain will begin by late Friday afternoon and evening. Rain will continue to fall through much of the overnight hours. Farther to the north and west, colder air will filter into the region allowing rain to change to snow in those areas but probably not into the D.C. Metro until sunrise. Wet roads and grass above freezing will take longer to coat with the light snow.
Technically speaking, there isn't much jet support as it is displaced too far to the southeast. There is also the fact that the trough will still be positively tilted by the time it is over D.C. which is not good if you want the low to track right up the coast. You'll want a negatively tilted trough for the coastal "bombogenesis". This system will rapidly intensify but it will be too far off the coast to do us any harm. There's also no real cold air support as our weak high slides over the Atlantic and isn't locked in place over the southeastern Canada.
What to expect: Rain to start Friday evening before a brief change to snow Saturday morning. Any accumulations will be on par with what the region saw Wednesday. Flurries and patches of light snow will be possible through the afternoon on Saturday. Winds will pick up by Saturday afternoon, becoming windy by Saturday night as the low intensifies to our east. Sunday will be windy and cold with highs only in the mid to upper 30s.