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Unified States of America located in the central corner of the North American continent, occupying a immense arrondissement between 25 th and 57 th parallels of north latitude. To the east, washed Atlantic, in the south - the Bay of Mexico Caribbean Plethora in the west and south-west - the Pacific Multitude, the northern and north-west seaside of Alaska - the Arctic Ocean.
U.S. borders with Canada in the north (the total ultimately of 8893 km limits, including 2,477 km in Alaska), with Mexico in the south (3141 km), with Russia in the north-west (quantity border to the Bering Strait and the Arctic shelf, the dissociate between the islands of Lesser and Gargantuan Diomede, association to the Coordinated States and Russia, mutatis mutandis, is only 4 km) and Cuba in the south-east (the dado as the breaker, the Straits of Florida, and on arrive, in the U.S. naval headquarter at Guantanamo Bay, located entirely in Cuba).
The Hawaiian Islands are located in the chief Pacific Davy jones’s locker, a mileage of almost 4000 km from the mainland. Varied archipelago territories, and in chestnut form or another owned during the U.S., scattered across the waters of the Pacific and Atlantic oceans.
Second to the supervision of the Synergetic States is also a number of key territories with special civil repute (in each at all events, it installs a separate agreement, backed by way of the decision of the federal authorities). These contain the islet territory of American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Federated States of Micronesia, Puerto Rico, U.S. Virgin Islands, Baker, Howland Islet and Jarvis Island, Johnston Atoll, Midway Islet, Navassa Island, Palmyra, Wake, Kingman Reef and some other territory.
The thoroughgoing square footage of the country is about 9,360,000 l- meters. km (9,820,000 honourable meters. kms - with the islands and the Trust Territories).
Ambience and suffer
Weather USA is a abundant make of climatic conditions. At the substance of the native land drink identified two main climatic tract - East and West. The confines between them coincides with isohyet 500 mm and should be clumsily along the meridian 100 ° W
Eastern zone as a usually is characterized close to wet weather with an commonplace annual rainfall of 500 mm along the meridian 100 ° W to more than 1500 mm in the south-east. The pre-eminent source of shower - pleasant moist song coming from the Inlet of Mexico, and - to a much lesser size - from the Atlantic Ocean. Temperatures in this tract are more influenced beside latitude than the pinnacle of the surface, and to a certain extent uniformly increased from north to south. As a conclude, short summers in the north and warm in the south dream of and spicy, and winters in the north has a extensive and bitter, in the south is excluding, and exact warm.
Temperature now New York. Much of the eastern domain subject to continuing suffer changes, first because the rush of lively aura from the south often interrupted the masses of numbing allied infiltrating from the north. Notably convertible climate ailing in Late England, where talkative rainy seasons apace replaced cloudless dry.
In the Western Ambit huge ground has a celebrated pressurize on the circulation of the atmosphere. When vlagonesuschie reveal masses impressive from the Pacific Abundance to the east, rising more than the considerable mountains, where precipitation. Allow for, the windward western slopes of the mountains is much think twice supplied with moisture, than the vast arid range located on the leeward side of the shower track of mountains. Although in general the Western Locality is ingrained in the arid ambience, mean annual snow ranges from less than 120 mm in the Sonora vacant to more than 2500 mm in some areas the Strand Ranges.
Temperatures in the western domain depends on latitude and altitude, and in coastal areas affected past moderating the impact of the ocean. The highest of the mountains are constantly in the winter, whereas in the most southern desert most of the year dominated via hot weather. Unstable Mountains to watch over them from the infraction of distant wind masses from the north.
Climatic regions. On the mainland, the U.S. gives 11 climatic regions, including four in the Eastern climatic territory and seven - in the West.
Humid continental ambience with short summers covers the northern states from North Dakota to Maine. Summer is stubby and there is a impassioned, daytime climax temperatures (27-38 ° C) were observed in sunny poorly, much slash - in the cloud. The frost-free period, underfunded - from less than 120 days in North Dakota to almost 180 days in the Point Cape Cod in Massachusetts. The winters are large and apathetic, continually with daytime maximum temperatures lower 0 ° C.
Local weather Chicago. Typical annual rainfall ranges from 500 mm in the west to over 1000 mm on the strand of New England. At least half of the unqualified drizzle falls in summer, and they time bear rushing character. Winter precipitation inveterately falls as snow. Maximum province of snow sheathe in the mountains of New England and signally in the valley r.Sv. Lawrence.
Sticky continental feeling with long summer includes most of the Midwest and is characterized nearby long fervid and sultry summer. Hot summer days, the top temperatures overstep 32 ° C, the nights are warm. The greater faction of the district frost-free span lasts from 150 to 200 days, which creates favorable conditions for growing corn and other crops. Winters are emotionless, but there are periods of kind weather, again with fog.
Customarily annual sleet ranges from 500 mm in the west to greater than 1000 mm on the strand of Unusual England. At least half of the mount up to downpour falls in summer, and they in many cases have copious character. Winter sleet as per usual falls as snow. Maximum capacity of snow attire in the mountains of Modern England and above all in the valley r.Sv. Lawrence.
Humid continental climate with long summer includes most of the Midwest and is characterized by way of lengthy scalding and wet summer. Unpredictable intensify summer days, the highest temperatures better 32 ° C, the nights are warm. The greater neck of the woods of the area frost-free period lasts from 150 to 200 days, which creates favorable conditions for growing corn and other crops. Winters are depressing, but there are periods of equable weather, repeatedly with fog.
Average annual drizzle ranges from 500 mm in the west to all but 1300 mm in the east, with their most falls in the form of summer showers. Although snowfalls are annual, winter snowfall at bottom rain.
Damp subtropical aura occupies wellnigh the undivided rural area to the south of the humid continental climate. Summer is elongated and commercial: scalding and sticky day (most temperature 32-38 ° C); not many nights cooler, but on the whole not less wet. Frost-free term lasts 200 days in the north to more than 300 days on the Separation Coast. In some years there is no winter frost. Winters everywhere in the quarter are uncivil and mellow, the maximum daytime temperatures of 10 to 21 ° C.
In most of the acreage falls year on norm 1000-1500 mm of rainstorm in the west - no greater than 500 mm. The dispersal of precipitation on seasonal uniform. They flop start by in the fashion of rain. In tardily summer and autumn coastal areas again suffer from tropical storms, which differ tremendous bad force.
Muggy and lecherous tropical climate is the most southern shard of Florida. This is the only area in reality tropical climate on the mainland Collaborative States. This year straightforward there are no trenchant seasonal and routine fluctuations in temperature. Afternoon limit temperatures are typically 21-32 ° C, and at night just 6 ° C below. Just as in the subtropical weather, here high apropos comparative humidity and constantly stuffy. Normally annual rain exceeds 1500 mm, with most of their accounts in the service of the duration from May to October.
Part not excessive maritime aura is confined to the Pacific Northwest within the Pacific regional mining district, north of San Francisco Bay. Influenced via the dominating westerly winds blowing from the Pacific Profusion, summer here is cooler and winters warmer than other places the U.S., located on the same latitudes. Summer is on the whole warm, maximum continually temperature 21-26 ° C and reduced night - 10-15 ° C. Winters are kindly, with temperatures for the most part exposed to 0 ° C, the crest daytime temperature rises to 4-15 ° C. The frost-free epoch lasts from 200 up to 300 days, and ice-cold are inveterately alone at night.
Weather September. Normal annual precipitation ranges from 750 to 3600 mm and more, with the most sultry western slopes of the Coast Ranges. Although the rains fall year annular, most of them in the decorum of unceasing rain or drizzle in the lead-gray sky falls on winter. Clouds natural winter withstand, and in solution with persistent fog and low-hanging cloud, the stand reminds marathon drizzle with dull in Western Europe. Every year, winter is a some days with snowfalls, but the snow kept sole on the tops of the mountains. As probably as on the Pacific Ocean. August and September - the warmest months (+24-30 ° C), January and February - the most phlegmatic (forth +12 ° C) and the wettest, but at any duration, the ocean breezes soothe the weather in the supervision of greater comfort. But, urban smog in conjunction with the summer heat makes the object of summer is not the outwit point to stop the capital city, while adjoining the northern and southern reserve areas in the anyway space, take without equal bear up against conditions.
The climate of Alaska sooner harsh, since 30% of its stamping-ground is located within the Arctic Circle. In northern and central areas, with their sub-Arctic climate, the thermometer in winter over drop to -45-50 ° C, in summer the air was heated to +16-20 ° C (in the northern regions - +2-6 ° C) with very muffled rainfall (anent 250 mm annually). In southern and key parts of the weather is temperate maritime, typically summer temperature is around +18 ° C, but often the air is heated to +30 ° C) in winter - from -6 ° C to +4 ° C, drizzle is falling from 400 to 600 mm per year.