The goal of this document is to analyze the U.S. National Oceanic and Atmospheric Administration's (NOAA) storm database and to address the following questions 1. Across the United States, which types of events (as indicated in the EVTYPE variable) are most harmful with respect to population health? 2. Across the United States, which types of events have the greatest economic consequences? The analysis starts with the download of the NOAA storm database, which is then processed evaluating the event types reported per each year. This leads to take into consideration only the data starting from 1993, since prior data did report only few event-types, and to re-map some event-types according to the NOAA documentation. To analyze the economic value of event damages some elaboration is performed on the fields representing the magnitude of event damages economic values.