[20190711]IF10719_飓风预报：国家飓风中心的作用.pdf

https:/crsreports.congress.gov Updated July 11, 2019Forecasting Hurricanes: Role of the National Hurricane CenterThe National Hurricane Center (NHC), part of the National Weather Service (NWS) within the National Oceanic and Atmospheric Administration (NOAA), is responsible for forecasting tropical cyclones, including hurricanes in the Atlantic Ocean and the eastern Pacific Ocean. The NHC provides estimates of the path of a tropical cyclone (i.e., hurricane track), the intensity, and the size and structure of the storm, as well as predictions of storm surge, rainfall, and even associated tornadoes. Depending on the status of the tropical cyclone, this information may be used to create a hurricane watch or a hurricane warning and public advisories, which are issued on an increasingly frequent basis if a storm strengthens and approaches the U.S. coastline. How the Process Works A hurricane forecast involves many components and uses a broad array of resources and capabilities within NOAA and the NWS, all of which must be coordinated and interpreted by the NHC. The process begins with observations: satellites, aircraft, ships, buoys, radar, and other sources provide data used to creat