Question: what is the difference between a blizzard watch and warning?
Answer: A winter storm watch is issued to provide 12 to 36 hours notice of the possibility of severe winter weather. ... A watch is upgraded to a Winter Storm Warning when 4 or more inches of snow or sleet is expected in the next 12 hours, or 6 or more inches in 24 hours, or 1/4 inch or more of ice accretion is expected.