The analysis address two questions about the impact of different event types in the NOAA storm database. First, the health impact. Then, the economic impact. The data es pre-processed to drop unused variables, clean inconsistent explanation characters, and group & summarize the impact by each event type. The health impact is measured with the total amount of fatalities and the total amount of injuries. The economic impact is measured with the total estimated monetary cost in terms of property cost plus crop cost. The final recommendation is to prioritize tornados as the worst event by all means.