Of an impending event, or an overwhelming or oppressive force: so as to constitute a threat or danger; (also) so as to be a source of dread or…

in store: in reserve, laid up for future use. Hence (of events or conditions in the future) in store for: awaiting (a person).

Involved in some coming event, etc., esp. one which cannot be avoided; finally committed to do something; (now esp.) destined to experience…