This question always comes in my mind.
I live in Karnataka coastal region. Arabian sea is just 7 km away from my house !!!
Here we are dying in sweating because of humidity whereas Bay of Bengal coastal region is always receiving rain because of cyclones.
Now cyclone Arnab has made its landfall in Andhra Pradesh coastal region !!!
I always wondered why cyclones form only in Bay of Bengal and not in Arabian sea ??
80% of cyclones of India come from Bay of Bengal.
Only 20% are from Arabian sea !!!
I have finally managed to list down 3 important reasons.
1. Water is more hot in Bay of Bengal.
Cyclones need sea water above 27 degree Celsius to born.
Bay of Bengal is small, shallow and closed.. Sun heats it quickly.
Arabian sea is big, open and deep. Heat spreads away.
2. All the big rivers fall into Bay of Bengal like Ganga,. Brahmaputra, Krishna etc.
Arabian sea has NO BIG RIVERS.
Fresh water is ligut. Easily gets heated.
As Bay of Bengal receives fresh water continuously, this water gets easily heated thus born cyclones !!!
3. Bay of Bengal is surrounded by land on 3 sides. India Bangladesh Myanmar.
Wind gets trapped and starts spinning.
Arabian sea is wide open. Wind runs away and can't spin property to form cyclones !!!
That's why CYCLONES ARE MORE IN BAY OF BENGAL THAN ARABIAN SEA !!!