I never have any good spot to measure but after trying a couple of spots my guess is about 1.2" as of 4:00. I'll see what others get before feeling comfortable with that.
Where you at? Your location says Harlem.
mPING reports suggest its snow/mostly snow in Dale City and just outside Oakton, which at least means that the rain/snow line won't be too far away from the metro -- if it starts as rain at all.
Arlington just announced its two hour early release -- much later than they are supposed to do (10:30) so they might've had a last second panic when OPM announced it. They at least get out at 1:35... so maybe slightly better.