US blizzard: Charting the snow depth - using six dogs

The north-east of the US has endured a succession of snowstorms. The BBC's Franz Strasser looks at the historical numbers - and uses an unconventional measure to chart how deep the snow is in Boston.

Snow depth in Boston 10 Feb 14:00 GMT (09:00 EST)

Snow depth in Boston 27 Jan 22:00 GMT (17:00 EST)

Snow depth in Boston 18:00 GMT (13:00 EST)

Snow depth in Boston 14:00 GMT (09:00 EST)

Snow depth in Boston at 08:00 GMT Tuesday (03:00 EST)

Snow depth in Boston 22:00 GMT Monday (17:00 EST)

If forecasts are correct, this storm could dump the most snow ever on Boston

Less snow is expected in New York but it could still challenge the record