This case study explains how the work of the National Weather Service (NWS) Omaha-Valley office was instrumental in reducing the negative human health impacts of the Arbor Day tornado outbreak. Despite causing over US$8 million in public infrastructure damage in these two counties alone, there were no deaths or significant injuries. In household surveys conducted in-person in Washington County, nearly 80% of respondents indicated that members of their household knew the difference between a tornado watch and warning, and 95% of households received at least one emergency alert. Most households received tornado warnings from television, text notifications, and word of mouth. Almost 90% of households knew where to shelter safely.
This case study includes the following key messages:
- Early warnings and overlapping communications reduce morbidity and mortality.
- Disaster risk knowledge is vital for households to take protective action.
- The downsizing of federal support for organizations responsible for issuing early warnings and alerts will be detrimental to the health and well-being of communities throughout the United States.