How do natural phenomena differ from natural disasters?

Natural phenomena are unexpected, terrible in their consequences for humans, violations of the correct course of natural phenomena.
Natural disasters are catastrophic natural phenomena and processes that can cause human casualties and material damage. Man blames Nature.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.