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March 1969 Nor'easter
The March 1969 nor'easter was an extratropical cyclone that moved into the Gulf of Mexico on March 5, moving through southern Georgia, then deepened as it moved along the lower Eastern Seaboard, before swinging wide of New England and Atlantic Canada. Heavy snows fell across eastern Maryland, southern Delaware, and Martha's Vineyard in Massachusetts. It was a strong system, with maximum sustained winds of a central pressure close to while south of Atlantic Canada. The system then moved into the far northern Atlantic Ocean while splitting into two low pressure areas on March 10. Evolution Late on March 5, a frontal wave moved offshore Galveston, Texas. The system moved along the Gulf coast on March 6. Gale-force winds were confined to behind its prefrontal squall line on March 6. The cyclone moved along the Florida-Georgia border with a central pressure down to . The low tracked up the Eastern Seaboard from the late on the 6th through the morning of the 7th while streng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extratropical Cyclone
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth. Extratropical cyclones are capable of producing anything from cloudiness and mild showers to severe gales, thunderstorms, blizzards, and tornadoes. These types of cyclones are defined as large scale (synoptic) low pressure weather systems that occur in the middle latitudes of the Earth. In contrast with tropical cyclones, extratropical cyclones produce rapid changes in temperature and dew point along broad lines, called weather fronts, about the center of the cyclone. Terminology The term " cyclone" applies to numerous types of low pressure areas, one of which is the extratropical cyclone. The descriptor ''extratropical'' signifies that this type of cyclone generally occurs outside the tropics and in the middle latitudes of Earth between 30° and 60° latitude. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martha's Vineyard
Martha's Vineyard, often simply called the Vineyard, is an island in the Northeastern United States, located south of Cape Cod in Dukes County, Massachusetts, known for being a popular, affluent summer colony. Martha's Vineyard includes the smaller adjacent Chappaquiddick Island, which is usually connected to the Vineyard. The two islands have sometimes been separated by storms and hurricanes, which last occurred from 2007 to 2015. It is the 58th largest island in the U.S., with a land area of about , and the third-largest on the East Coast, after Long Island and Mount Desert Island. Martha's Vineyard constitutes the bulk of Dukes County, which also includes the Elizabeth Islands and the island of Nomans Land. The Vineyard was home to one of the earliest known deaf communities in the United States; consequently, a sign language, the Martha's Vineyard Sign Language, emerged on the island among both deaf and hearing islanders. The 2010 census reported a year-round popu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maximum Sustained Wind
The maximum sustained wind associated with a tropical cyclone is a common indicator of the intensity of the storm. Within a mature tropical cyclone, it is found within the eyewall at a distance defined as the radius of maximum wind, or RMW. Unlike gusts, the value of these winds are determined via their sampling and averaging the sampled results over a period of time. Wind measuring has been standardized globally to reflect the winds at above the Earth's surface, and the maximum sustained wind represents the highest average wind over either a one-minute (US) or ten-minute time span (see the definition, below), anywhere within the tropical cyclone. Surface winds are highly variable due to friction between the atmosphere and the Earth's surface, as well as near hills and mountains over land. Over the ocean, satellite imagery determines the value of the maximum sustained winds within a tropical cyclone. Land, ship, aircraft reconnaissance observations, and radar imagery can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Pressure Area
In meteorology, a low-pressure area, low area or low is a region where the atmospheric pressure is lower than that of surrounding locations. Low-pressure areas are commonly associated with inclement weather (such as cloudy, windy, with possible rain or storms), while high-pressure areas are associated with lighter winds and clear skies. Winds circle anti-clockwise around lows in the northern hemisphere, and clockwise in the southern hemisphere, due to opposing Coriolis forces. Low-pressure systems form under areas of wind divergence that occur in the upper levels of the atmosphere (aloft). The formation process of a low-pressure area is known as cyclogenesis. In meteorology, atmospheric divergence aloft occurs in two kinds of places: * The first is in the area on the east side of upper troughs, which form half of a Rossby wave within the Westerlies (a trough with large wavelength that extends through the troposphere). * A second is an area where wind divergence aloft occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squall Line
A squall line, or more accurately a quasi-linear convective system (QLCS), is a line of thunderstorms, often forming along or ahead of a cold front. In the early 20th century, the term was used as a synonym for cold front (which often are accompanied by abrupt and gusty wind shifts). Linear thunderstorm structures often contain heavy precipitation, hail, frequent lightning, strong straight-line winds, and occasionally tornadoes or waterspouts. Particularly strong straight-line winds can occur where the linear structure forms into the shape of a bow echo. Tornadoes can occur along waves within a line echo wave pattern (LEWP), where mesoscale low-pressure areas are present. Some bow echoes can grow to become derechos as they move swiftly across a large area. On the back edge of the rainband associated with mature squall lines, a wake low can be present, on very rare occasions associated with a heat burst. Theory Polar front theory was developed by Jacob Bjerknes, derived from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Charles, Virginia
Cape Charles is a town / municipal corporation in Northampton County, Virginia, United States. The population was 1,009 as of the 2010 Census. History Cape Charles, located close to the mouth of the Chesapeake Bay, on Virginia's Eastern Shore, was founded in 1884 as a planned community by railroad and ferry interests. In 1883, William Lawrence Scott became president of the New York, Philadelphia and Norfolk Railroad Company (NYP&N), and purchased three plantations comprising approximately 2,509 acres from the heirs of former Virginia Governor Littleton Waller Tazewell. Of this land, 40 acres were ceded to the NYP&N, and 136 acres went to create the Town of Cape Charles (technically known as the "Municipal Corporation of Cape Charles"). Some of this land, named Cape Charles for the geographical cape found on the Point and headland to the south, Scott sold to the Railroad Company to serve as the southern terminus of the line on the Delmarva Peninsula from the Northeast states. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticosti Island
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Lewes, Delaware
Lewes ( ) is an incorporated city on the Delaware Bay in eastern Sussex County, Delaware, United States. According to the 2010 census, the population is 2,747. Along with neighboring Rehoboth Beach, Lewes is one of the principal cities of Delaware's rapidly growing Cape Region. The city lies within the Salisbury, Maryland–Delaware Metropolitan Statistical Area. Lewes proudly claims to be "The First Town in The First State." History Lewes was the site of the first European settlement in Delaware, a whaling and trading post that Dutch settlers founded on June 3, 1631, and named Zwaanendael (Swan Valley).Munroe, John A.: ''Colonial Delaware: A History'': Millwood, New York: KTO Press; 1978; pp. 9–12. The colony had a short existence, as a local tribe of Lenape Native Americans wiped out the 32 settlers in 1632. The area remained rather neglected by the Dutch until, under the threat of annexation from the colony of Maryland, the city of Amsterdam made a grant of land at the Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blizzards In The United States
A blizzard is a severe snowstorm characterized by strong sustained winds and low visibility, lasting for a prolonged period of time—typically at least three or four hours. A ground blizzard is a weather condition where snow is not falling but loose snow on the ground is lifted and blown by strong winds. Blizzards can have an immense size and usually stretch to hundreds or thousands of kilometres. Definition and etymology In the United States, the National Weather Service defines a blizzard as a severe snow storm characterized by strong winds causing blowing snow that results in low visibilities. The difference between a blizzard and a snowstorm is the strength of the wind, not the amount of snow. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to with blowing or drifting snow which reduces visibility to or less and must last for a prolonged period of time—typically three hours or more. Environment Canada define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Disasters In Maryland
Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena. The word ''nature'' is borrowed from the Old French ''nature'' and is derived from the Latin word ''natura'', or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, ''natura'' is mostly used as the Latin translation of the Greek word ''physis'' (φύσις), which originally related to the intrinsic characteristics of plants, animals, and other features of the world to develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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