Using this difference, one can estimate how far away the bolt of lightning is by timing the interval between seeing the flash and hearing thunder. The speed of sound in dry air is approximately 343 m/s or 1,127 ft/s or 768 mph (1,236 km/h) at 20 Â°C (68 Â°F).
From Wikipedia, the free encyclopedia. Fort Pierce is a city in and the county seat of St. Lucie County, Florida, United States. It is also known as the Sunrise City, sister to San Francisco, California, the Sunset City. The population was 41,590 at the 2010 census. As of 2012, the population recorded by the U.S. Census Bureau was 42,645.
LandWatch.com has thousands of rural properties in Fort Pierce, St. Lucie County, Florida, including hunting & fishing properties, cabins, Land for sale and land auctions. Choose from small acreage lots to massive 500+ acre estates. You can also find Fort Pierce, St. Lucie County, Florida real estate agents who specialize in land and rural retreats. Sign up for our Fort Pierce, St. Lucie County, Florida email alerts and never miss out on a new listing again!