Context: And looking out of the windscreen , we saw something I ' ve never seen before : a sort of limp sausage - shaped cloud sticking out of the side of a thunderhead , hanging down towards the Shannon Estuary . It looked like a cloud with a ponytail . Odd thing . The twisting of the tip hanging down made it more obvious , though : it was a tornado !
Question: What may have caused the tornado ?
Option 0: They were having a severe thunderstorm .
Option 1: They were having a storm while it was cold outside .
Option 2: None of the above choices .
Option 3: The wind had been strong that day .
Answer: 0