Today will be a fabulous weather day to travel if you have the ability to adjust your plans at all. All signs are leading to a major travel headache for D.C. and throughout the Megalopolis for Wednesday all day long. We are officially on Stormwatch now. Here are the latest warnings and advisories for our area.
- Winter Storm Watch
- The pink area is under a warning and most likely to have the heaviest snowfall totals that could reach 6" or more. In the advisory snow will only be a few inches. As new information from computer models continue to pour in, we still have some variations on the solution, so it makes for a tricky one. No big surprise, this is D.C. Let's start with timing. Here is a look at the most recent Futurecast7 model of the start of rain, transition to snow and sharp ending.
- ABC7 Futurecast
The models depict a cold rain to start, mix by late morning, with some hovering or the transition line around I-95 and then ending with snow.
Here are the big three things that you need to know:
1) Starts as rain before dawn, changes to rain/snow mid-late morning, finishes as snow before evening commute.
2) Little-to-no accumulation is expected inside beltway, mainly just wet Roads. If snow rate is heavy enough, up to a slushy 1/2" or inch possible. Watch for slick spots after dark temperatures start around 40 and end just above freezing. Fairfax and Montgomery Counties may see 1-2".
3) Heaviest precipitation will be between 10 a.m. and 3 p.m.
Impact for Potomac Highlands and Mountains:
1) May start as wintry mix or snow in the morning.
2) Snow totals are likely 3-6" with isolated spots getting more.
3) Hazardous roads much of the day. Ending mid-afternoon, but slick spots will stay unless roads are treated.
Challenge: Temperatures. Through the duration of the storm, temperatures are currently forecast to be above freezing in the close-in metro. We've been very warm the past few days, so snow will melt on contact for a while. There is no arctic air in place, but the storm will create it's own cold. How much is still somewhat in question. Bottom line is that confidence is moderate on this storm and these forecast totals could go up or down still. Here is my latest forecast snow totals map.
- ABC7 Snowfall Forecast Wednesday
Make sure you join ABC7's Stormteam of meteorologists today from Noon-6:30 p.m. on Facebook. We will take your questions in a live Q & A session about the storm and travel across the country.