The aircraft seems to have been caught up with thunderstorms. Present weather conditions are known as pre monsoon season in India marked by intense dry heat inland. Along the coastline movement of air from the sea gives rise to violent thunderstorms. Along the kolkota, Bhuvneshwar coastline it gives rise to self generating thunderstorms where down draught of dissipating storm triggers another. It happens in North Westerly direction and are called Norwesters. India is not known for tornadoes but these Norwesters can have tornadic violence. They are to be avoided at all costs. Whether these injured passengers were not properly strapped, was the announcement made giving time to strap only the Inquiry will reveal.