The tone of the passage can be described as tense and foreboding, characterized by the use of imagery that conveys a sense of impending danger. Words like "darkened," "howled," and "unease" contribute to an ominous atmosphere.
The mood is anxious and suspenseful, as the reader feels the weight of the storm approaching and the discomfort of the characters inside. The contrast between the crackling fireplace and the outside turmoil amplifies the feeling of vulnerability and anticipation of something unsettling.
In summary, the tone is tense and foreboding, while the mood is anxious and suspenseful.