The GFS 240 Method - When you need to plan for well in advance for time off from work. It's for road warriors, locals don't need it.
ALL WINTER, don't schedule any meetings for Monday or Friday (or Thursday PM) to give yourself max flexibility.
Make sure you use the GFS ACCUMULATION view - all the snow between now and 240 hours.
Once you see 2 or 3 runs in a row with significant snow in the 240, the looks at the shorter durations, to try to see more precisely when the snow will fall. GFS has 4 runs a day — 0z, 6z, 12z and 18z. Rely on the 0z and 12z. The 6z and 18z are less useful or accurate. (Ask
@jasonwx why, not sure).
This page has five maps at the bottom
GFS 48
GFS 96
GFS 144
GFS 192
GFS 240
The bigger the predicted snowfall, the more likely some measurable snow will fall.
Once you are within 5 days, start asking for time off.
If the storm flakes out, just show up at work and act like nothing ever happened.