
1) Cause of a snow day 2) Weather hazard
Found on
https://www.crosswordclues.com/clue/winter-storm

A winter storm is an event in which the varieties of precipitation are formed that only occur at low temperatures, such as snow or sleet, or a rainstorm where ground temperatures are low enough to allow ice to form (i.e. freezing rain). In temperate continental climates, these storms are not necessarily restricted to the winter season, but may occ...
Found on
http://en.wikipedia.org/wiki/Winter_storm

A heavy snow event.
Found on
http://ggweather.com/glossary.htm

A heavy snow event. A snow accumulation of more than 6 inches in 12 hrs or more than 12 inches in 24 hrs.
Found on
http://www.encyclo.co.uk/local/22268

A heavy snow event. A snow accumulation of more than six inches in 12 hours or more than 12 inches in 24 hours.
Found on
http://www.timeanddate.com/weather/glossary.html

A large-scale disturbance, often hundreds of kilometres across, associated with a low-pressure system, or cyclone, that develops along a front during the cooler part of the year. Winter storms can produce strong winds, heavy precipitation (rain, freezing rain, ice pellets or snow) and cold temperatures.
Found on
https://www.encyclo.co.uk/local/21131
No exact match found.