I have no idea. It's not revealed for me. We're asked to repent, turn from evil and pray seriously. Whoever can do let them do fasting and prayer. God is our Salvation. He is our Protector. He can save us as He saved Nineveh.
Sooo... Since you're from India, I'm going to guess.
The big disaster is going to wipe out the Dell Technical Support call center in India? Buddy, over here that wouldn't exactly be called a disaster....