Monsoon's update: the juicy back-end
By about 4pm we'll be seeing light to moderate snow again in the Lancaster-Reading area. I expect the heaviest snow to fall between about 6pm and 10pm. Snow will taper after midnight and move out of here before daybreak Thursday.

Total accumulations: I expect to see 10-14 inches (including this morning's surprise hit); more in isolated areas.
Possibility of at least a delay on Thursday, 95% (there's going to be a lot to clean up, and we'll need those extra hours)
Possibility of cancellation Thursday, 75% (my confidence is growing on this for several reasons: 1. the untreated surfaces and back roads will be a mess after the shit-ton of snow we get tonight; 2. the temperature will be in the mid 20s throughout the morning, so anything that falls overnight will still be frozen in the morning; 3. it's a heavy, wet snow, and that may pull down branches and power lines--and maybe even roofs--around the area; and 4. administrators likely got an earful from angry parents for holding school at all today, turning around buses carrying little kids, which then skidded around the slippery roads for hours; needless to say, I think they're likely to err on the side of caution tomorrow)
Well, that's it. Anything else interesting comes up, I'll let you know. And remember to email me with reports of snow totals, thunder, or anything else of note...