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              Congressional                                                     ____
          ~ Research Service






2023 Hurricane Outlooks and 2022 Hurricane

Season Review



Updated August 10, 2023

Many  in Congress have expressed interest in increasing understanding of tropical cyclones and improving
forecasts to help their constituents prepare for the yearly hurricane season. These improvements may
potentially decrease a storm's impact on an individual or community. The Department of Commerce's
National Oceanic and Atmospheric Administration (NOAA) is responsible for monitoring tropical
cyclones as they develop and issuing forecasts, including track, intensity, storm surge, and rainfall.
NOAA   defines a tropical cyclone as a rotating, organized system of clouds and thunderstorms that
originates over tropical or subtropical waters and has a closed low-level circulation. According to
NOAA,  tropical cyclones include the following:
      Tropical depressions-maximum  sustained winds of < 38 miles per hour (mph).
      Tropical storms-maximum  sustained winds of 39-73 mph. NOAA typically names a
       storm once it reaches this strength.
      Hurricanes-maximum   sustained winds of > 74 mph, corresponding to at least category 1
       or 2 on the Saffir-Simpson Hurricane Wind Scale. Hurricanes may also be called
       typhoons or cyclones, depending on the storm's location.
      Major hurricanes-maximum  sustained winds of > 111 mph, corresponding to category
       3, 4, or 5.
NOAA   releases seasonal hurricane outlooks relevant to the United States, including for the North
Atlantic, Eastern Pacific, and Central Pacific Oceans, in May before each hurricane season begins. Such
outlooks include information on the number of potential named storms, hurricanes, and major hurricanes.
The Eastern Pacific season begins May 15, whereas the Atlantic and Central Pacific seasons begin June 1.
All seasons run through November 30. Tropical cyclones, however, may form outside of these time
frames. In August, NOAA typically updates the Atlantic outlook but not the Pacific outlooks. Multiple
nonfederal entities also publish outlooks. These forecasts rely, in part, on NOAA's collected and shared
information.




                                                                Congressional Research Service
                                                                https://crsreports.congress.gov
                                                                                     IN12167

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