One system moves out and yet another is on its heels. An Alberta clipper is diving out of Canada and is currently over the northern Plains. This clipper will continue it's trek southeastward and will bring snow to parts of our area by dinner time Sunday.
The National Weather Service has issued a Winter Storm Watch for northwestern parts of the ABC 7 viewing area from 9 PM Sunday through 9 PM Monday. A winter storm watch is issued when 5", or more, of snow is possible.
Clouds will increase Sunday with a rain/snow mix beginning around dinner-time (6 PM) in our far northwestern zones. As temperatures fall, precipitation will transition to all snow after midnight. Snow will fill in across the rest of the area overnight Sunday. Here's our in house computer simulation at 7 AM Monday. Blue=snow. Pink=mix. Green=rain.
Snow showers will greet you Monday morning with school closings and delays likely. Good Morning Washington will begin at 4 AM Monday and will have all of that information.
Temperatures will stay in the lower 30s Monday with light snow showers continuing throughout the day. There is still inconsistency within the models, but at this time, I think our StormWatch 7 futurecast model has a good handle on preliminary snowfall totals.
The clipper will transition to a strong coastal storm and will be a major snow storm over the Northeast. Strong NE winds will kick up Monday with the deepening area of low pressure. That means some blowing snow showers Monday, which could result in reduced visibility. Check out the 988 mb low, forecast by the GFS model, by 8 PM Monday.
- WeatherBell Computer Models - 18z GFS
It's still uncertain the exact track of the low, which will have an impact on snowfall accumulations in the area. You'll want to stay with the StormWatch7 weather team throughout the day Sunday for additional weather updates, as new information becomes available.
Regardless, expect a snowy Monday morning commute with delays and closings likely.