climate

Flood Basics

Why do floods matter?

Flooding is the most common, and costliest, natural hazard facing the United States. The National Weather Service published reports on flood damages and deaths until 2014. From 1984 to 2014 floods caused an average of $8 billion in damages and 82 deaths per year nationwide.[1]

Drought Basics

Extreme drought is part of natural climatic cycles around the world. Historic records and prehistoric reconstructions extending back 1000 years document that extreme droughts have occurred repeatedly in North America, sometimes for longer periods than even the most severe droughts of the 20th century.[1] Research on climate variability is addressing how drought may impact the United States in the future. 

Weather Hazards Basics

Why do weather hazards matter?

Weather hazards impact the entire country, with enormous effects on the economy and public safety. Since 1980, weather/climate disasters have cost the U.S. economy more than $1 trillion.[1] Several billion-dollar weather/climate disasters affect the United States in an average year.[2]

Does flood risk for a particular location change over time?

FEMA National Flood Insurance Program:  

"Flood risk can, and does, change over time. Flood risks change for many reasons: new development, changes in levee classification, and environmental changes, to name a few. As a result FEMA is updating flood hazard maps across the country. These new flood maps, also, known as Digital Flood Insurance Rate Maps (DFIRMs), show flood risk at a property-by-property level.

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