A property owner is not liable for accidents resulting from the accumulation of snow and ice for a sufficient period of time following the storm so that the owner can ameliorate the hazards. On a motion for summary judgment, the question of whether a reasonable time has elapsed may be decided as a matter of law. A plaintiff's speculative deposition testimony will not defeat the motion.
Autieri v. Longi, NY Slip Op 06222 (2d Dep't September 26, 2018)
Here is the decision.