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  1. What is storm surge? - NOAA's National Ocean Service

    Storm surge is the abnormal rise in seawater level during a storm, measured as the height of the water above the normal predicted astronomical tide. The surge is caused primarily by a …

  2. What is a meteotsunami? - NOAA's National Ocean Service

    Feb 21, 2025 · Unlike tsunamis triggered by seismic activity, meteotsunamis are driven by weather events, such as fast-moving severe thunderstorms, squalls, or other storm fronts with …

  3. What is a barrier island? - NOAA's National Ocean Service

    This generally means smaller storm surge and less flooding on the coast. Unfortunately, barrier islands are disappearing at an alarming rate. Erosion can be caused by human activities such …

  4. What is a seiche? - NOAA's National Ocean Service

    In a similar fashion, earthquakes, tsunamis, or severe storm fronts may also cause seiches along ocean shelves and ocean harbors. Lake Erie is known for seiches, especially when strong …

  5. Coastal Flooding in California: What You Need to Know

    Storm Surge: Storm surge is the abnormal rise in water level caused by a storm, over and above the predicted tide. This rise in water level can cause extreme flooding in coastal areas …

  6. Coastal Hazards - NOAA's National Ocean Service

    The greatest threat to life actually comes from the water—in the form of storm surge. Storm surge is the abnormal rise in seawater level during a storm, measured as the height of the water …

  7. Why does the ocean have waves?

    Jun 16, 2024 · More potentially hazardous waves can be caused by severe weather, like a hurricane. The strong winds and pressure from this type of severe storm causes storm surge, …

  8. What is the difference between a hurricane watch and a warning?

    During a hurricane warning, complete storm preparations and immediately leave the threatened area if directed by local officials. A hurricane watch means that hurricane conditions (sustained …

  9. Hurricane Milton Damage Assessment Imagery

    NOAA's aerial imagery captures damage to coastal areas caused by a storm and aids safe navigation. Aerial imagery is a crucial tool to determine the extent of the damage inflicted by …

  10. What is a hurricane? - NOAA's National Ocean Service

    When the maximum sustained winds of a tropical storm reach 74 miles per hour, it’s called a hurricane. Hurricane Season begins on June 1 and ends on November 30, but these powerful …