Bhubaneswar, Nov. 10 -- It is winter and you will come across reports of trains and flights getting delayed or being cancelled due to dense fog conditions in different parts of the country. But do you know what fog is and its types?

Well, the India Meteorological Department (IMD) is the appropriate agency that has come forward to share relevant information regarding several aspects concerning weather conditions. On social media, several regional centres of IMD are sharing crucial information including weather forecast and other basic information that is useful for many.

So here is comprehensive information about fog and its types.

As per IMD, fog is defined as an obscurity in the surface layers of the atmosphere which is caused by a su...