Pat Shingleton:"After the Landfall..."
Tropical Storm Fred was downgraded Friday morning. Another tropical wave that rolled off of the African Coast has a 70 percent shot of further organization over the next five days and should it reach storm strength it will named Grace. Most hurricanes tend to rapidly weaken once they encounter a land mass. Sustained winds steadily decline once the storm's fuel source is compromised. Historical analysis of land falling storms indicates that damage doesn't end on the beach but advances inland. Recently, the "extratropical transition" of hurricanes over the eastern United States has been dramatic.Weatherwise magazine reports that post-tropical systems encounter other features, such as fronts or the jet-stream, and advance into dangerous cyclones that are part tropical and part extratropical. The result is additional hazardous weather, sometimes far inland and hundreds of miles from the shoreline. Selected hurricanes that made landfall in the United States with severe inland impacts during the post-tropical phase include Hazel in October of 1954 that flooded the Atlantic and Mid-Atlantic states. Camille hit our area in 1969 and flooded Central Virginia. Agnes. Eloise, Floyd and Gaston landed in Florida and the Carolinas and then flash flooded the Mid-Atlantic, New England and Central Virginia. Ivan in 2004 caused a tornado outbreak in the Southeast. Just last year Hurricane Arthur made landfall in Nova Scotia and caused wind damage and flash flooding in New England and Canada.