Atlantic Storms in the NorthEast An overview of North Atlantic coastal weather patterns on the eastern seaboard of the United States. From a Nor’easter to Hurricane, the unsettled weather of New England. Jason Wright T+TH 1-2:30 This paper is intended to give a quick overview of some of the stormy weather patterns of the North Atlantic. Focusing mostly on the effect it has on New England and the immediate surrounding weather. These storms include: Hurricanes (Summer) and Nor’Easters (Winter) which are a common enough occurrence in New England. Every year the East coast of the United States is bombarded with both. Just this past winter, it was a Nor’ easter which turned into the blizzard of 96’. Being a resident in the Northeast for 20+ years has allowed me to grow accustomed to these storms and to be able to prepare for them adequately. Some people have not had the pleasure of enduring some of these storms and have missed an experience well worth striving for. From the Mid-Atlantic Coast to the shores of New England, the classic storm is called a Nor’easter. A low pressure area off the Carolina coast strengthens and moves north. Wind-driven waves batter the coast from Virginia to Maine, causing flooding and severe beach erosion. The storm taps the Atlantic’s moisture supply and dumps heavy snow over a densely populated area. The snow and wind may combine into blizzard conditions and form deep drifts paralyzing the region. As the storm moves to the north, the counterclockwise winds push it back which creates the so called “tail” end of the storm. In some cases, it is almost like the “eye” of a hurricane. That is to say, that there is little activity or a shutdown of activity, and then it begins again as fierce as ever. Ice Storms are also a problem. Mountains, such as the Appalachians, act as a barrier to cold air trapping it in the valleys and adjacent low elevations. Warm air and moisture moves over the cold, trapped air. Rain falls from the warm layer onto a cold surface below becoming ice. Heavy snow can immobilize a region and paralyze a city, stranding commuters, stopping the flow of supplies, and disrupting emergency and medical services. Accumulations of snow can collapse buildings and knock down trees, bringing down power lines. In rural areas, homes and farms may be isolated for days and not have electricity. Unprotected livestock may be lost, especially during spring calving. In the mountains, heavy snow can lead to avalanches. The cost of snow removal, repairing damages and loss of businesses can have large economic impacts on cities and towns. Heavy accumulation of ice can bring down trees, electrical wires, telephone poles and lines, and communication towers. Power and other services can be disrupted for days while utility companies work to repair the extensive damage. Storms near the coast can cause beach erosion and sink ships at sea. A hurricane is along the same kind of storm. It does however have a much more destructive nature. This is due to the different type of force that it brings. A hurricane storm must include by definition, the following: (1) Low level convergence strong enough to dissipate the normal trade winds inversion and lift the moist layer, (2) High level divergence to remove the accumulated air from the system and permit the pressure to fall at the surface, and (3) sufficient energy to maintain the circulation. Hurricanes are also known as “tropical cyclones”. As calm moist air rises in the doldrums, numerous cumulonimbus clouds, widespread showers and thunderstorms develop. The pressure then mystically begins to fall rapidly, and a cyclonic rotation of the storm begins to form. The circulation continues to develop, until full intensity is achieved. Several vortices appear, and usually it is the northernmost of these that is most dominant. Scientists believe that this occurs for two reasons: (1) The Coriolis force is more important with latitude, and (2) A more dominant wind pattern is prevalent to the north. This intensifying of the storm, allows the pressure to drop even farther. As of yet, the meteorological world has failed to explain the impressive fall in pressure at the surface. However, the higher and lower levels may cause a fall in the pressure, simply by competing against each other. Those of the scientific world also are not positive of what outside acts, that may influence the hurricane, to intensify the disturbance. It is also known for certain, that a hurricane that would be damaging to the North Atlantic coast may not form if the following conditions are not met: (1) A great pressure drop from east to west, throughout the troposphere, (2) The path in front of the storm must be moist tropical air, and (3) The storm must remain over the open sea all the way from the West Indies to where it makes landfall on the North American coastal line. Along with this, is a pool of cold air which is strangely enough always available to intensify the storm. It is widely believed, that in every major hurricane in New England these conditions have been present. Usually, somewhere along the way, the hurricane does not reach the values that are need to continue. They sometimes end up as tropical storms. They must all reach their peak at the time in order to continue to become a hurricane. The Weather Bureau has undertaken studies of the possibility of man finding some way to modify hurricanes. However, these studies have proven to be not feasible. They have included nuclear bombs and increasing the water amount in the eye. By saturating the middle of the storm it is believed that they may be able to neutralize it. This is not a very likely scenario, as it would take a huge power of force to create the water necessary. Unless the conditions described in the past paragraph are met, and the wind speed of the storm itself do not reach 40-45 mph than no major hurricane will strike the New England area. As time goes by there will certainly be more hurricanes, and Nor’easters in our area. It is a fair guess that there will be some deaths and major inconveniences associated with these storms. However, most of the media and the world outside of the classroom (Earth Science) have not looked at the effect that it is having on our earth. Whether it be the erosion of the beaches or the flooding of the rivers, how much more can the New England area be prepared to take? All this remains to be seen and will hopefully someday get noticed by the media and the rest of the country.