Assertion: cirrostratus | /r/CapableOf | come before snow storm
Facets:
value: usually
type: DEGREE
Source sentences:
text: Cirrostratus clouds usually come 12-24 hours before a rain or snow storm.
text: Cirrostratus clouds usually come 12 to 24 hours before a rain or snowstorm.
text: Cirrostratus clouds generally come 12-24 hours before a rain or snow storm.