This is the 924th most frequent Persian word.
بلافاصله
"Immediately" or "without delay."
In this sentence, "بلافاصله" is utilized to instruct prompt action upon the occurrence of another event (receiving the message).
لطفاً بلافاصله پس از رسیدن پیام، پاسخ دهید.
Please respond immediately after receiving the message.
Here, "بلافاصله" expresses the wish for one event (the weather clearing) to occur right after a preceding event (the rain).
ما امیدواریم که بلافاصله پس از باران هوا صاف شود.
We hope that the weather clears immediately after the rain.
The word "بلافاصله" is used here to indicate that the action (leaving) happened directly following another event (hearing the bad news).