DCHP-1 Online
snow blockade 
on a road or railway, a blocking of traffic caused by a heavy snowfall.
- 1869 [Headline] The Snow Blockade.
- 1884 Thursday's train did not get in until nine o'clock this forenoon, snow blockades being the cause, and still the "beautiful" falls.
- 1896 The snow blockade does not affect the Royal Cafe.
- 1958 [Push plows are being used. This is the second blockade of the line by snowdrift within the past two weeks.]
- 1869 [Headline] The Snow Blockade.