Category 5 Hurricane Camille hits the U.S. Gulf Coast, killing 256 and causing $1.42 billion in damage.
Hurricane Camille was the second most intense tropical cyclone on record to strike the United States, behind the 1935 Labor Day hurricane. The most intense storm of the 1969 Atlantic hurricane season, Camille originated as a tropical depression on August 14, south of Cuba, from a long-tracked tropical wave. Located in a favorable environment for strengthening, the storm quickly intensified into a Category 2 hurricane before striking the western part of Cuba on August 15. Emerging into the Gulf of Mexico, Camille underwent another period of rapid intensification and became a Category 5 hurricane the next day as it moved northward towards the LouisianaMississippi region. Despite weakening slightly on August 17, the hurricane quickly re-intensified back into a Category 5 hurricane before it made landfall a half-hour before midnight in Bay St. Louis, Mississippi. At peak intensity, the hurricane had peak 1-minute sustained winds of 175 mph (280 km/h) and a minimum pressure of 900 mbar (26.58 inHg). This was the second-lowest pressure recorded for a U.S. landfall, and is one of just four hurricanes to make landfall in the U.S at Category 5 status. Only the 1935 Labor Day hurricane had a lower pressure at landfall. As Camille pushed inland, it quickly weakened and was a tropical depression by the time it was over the Ohio Valley. Once it emerged offshore, Camille was able to restrengthen to a strong tropical storm, before it became extratropical on August 22. Camille was absorbed by a frontal storm over the North Atlantic later that day.
Camille caused tremendous damage in its wake, and produced a peak official storm surge of 24 feet (7.3 m). The hurricane flattened nearly everything along the coast of the U.S. state of Mississippi, and caused additional flooding and deaths inland while crossing the Appalachian Mountains of Virginia. In the U.S., Camille killed more than 259 people and caused $1.42 billion in damages (equivalent to $10.5 billion in 2021).
The Saffir–Simpson hurricane wind scale (SSHWS), formerly the Saffir–Simpson hurricane scale (SSHS), classifies hurricanes – Western Hemisphere tropical cyclones – that exceed the intensities of tropical depressions and tropical storms – into five categories distinguished by the intensities of their sustained winds.
To be classified as a hurricane, a tropical cyclone must have one-minute-average maximum sustained winds at 10 m above the surface of at least 74 mph (Category 1). The highest classification in the scale, Category 5, consists of storms with sustained winds of at least 157 mph. See the table to the right for all five categories with wind speeds in various units. The classifications can provide some indication of the potential damage and flooding a hurricane will cause upon landfall.
The Saffir–Simpson hurricane wind scale is based on the highest wind speed averaged over a one-minute interval 10 m above the surface. Although the scale shows wind speeds in continuous speed ranges, the National Hurricane Center and the Central Pacific Hurricane Center assign tropical cyclone intensities in 5-knot (kn) increments (e.g., 100, 105, 110, 115 kn, etc.) because of the inherent uncertainty in estimating the strength of tropical cyclones. Wind speeds in knots are then converted to other units and rounded to the nearest 5 mph or 5 km/h.The Saffir–Simpson hurricane wind scale is used officially only to describe hurricanes that form in the Atlantic Ocean and northern Pacific Ocean east of the International Date Line. Other areas use different scales to label these storms, which are called cyclones or typhoons, depending on the area. These areas (except the JTWC) use three-minute or ten-minute averaged winds to determine the maximum sustained wind speed, creating an important difference which frustrates direct comparison between maximum wind speeds of storms measured using the Saffir–Simpson hurricane wind scale (usually 14% more intense) and those measured using a ten-minute interval (usually 12% less intense).There is some criticism of the SSHWS for not accounting for rain, storm surge, and other important factors, but SSHWS defenders say that part of the goal of SSHWS is to be straightforward and simple to understand.