The best way to prepare for an ice storm is to consider what emergency heat you have in case the electricity goes out.
If a substantial layer of ice is expected to accumulate from the freezing rain, an ice storm is forecast.
A deposit of glaze on an extensive scale constitutes an ice storm.
Has no one told you what happened last March—on the day of the ice storm?
At Christmas an ice storm came, and after that the cold was bitter indeed.
Two days later they made a second attempt, but were again enveloped in an ice storm that rendered progress impossible.