This is Course Project 2 of the Coursera course "Reproducible Research." In this report, we attempt to determine which types of severe weather events have the most significant impact on population health and the economy. To do this, we use the U.S. National Oceanic and Atmospheric Administration’s (NOAA) storm database. In order to assess the effect of severe weather events on population health, we use the NOAA storm data to determine which types of weather events have caused the greatest number of injuries and fatalities. In order to determine which event types have the greatest economic consequences, we use the NOAA storm data to determine which types of events have caused the most crop and property damage. We find that tornados have caused the largest number of injuries and fatalities among types of severe weather events, and that hurricanes and typhoons are most likely to cause significant amounts of crop and property damage.