This is the 1501st most frequent Japanese word.
そろそろ
"そろそろ" means "soon," "it's about time," or "gradually."
Here, 'そろそろ' conveys the expectation of an event (raining) happening shortly.
そろそろ雨が降りそうですね。
It looks like it might rain soon.
Here, 'そろそろ' is used to indicate that something is anticipated to happen soon.
そろそろ晩ご飯の時間ですね。
It's about time for dinner.
In this case, 'そろそろ' expresses that the action to leave needs to occur in the near future.