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United States of America located in the significant party of the North American continent, occupying a unlimited district between 25 th and 57 th parallels of north latitude. To the east, washed Atlantic, in the south - the Bay of Mexico Caribbean Flood in the west and south-west - the Pacific Lots, the northern and north-west beach of Alaska - the Arctic Ocean.
U.S. borders with Canada in the north (the thoroughgoing length of 8893 km boundary, including 2,477 km in Alaska), with Mexico in the south (3141 km), with Russia in the north-west (sea dado to the Bering Strait and the Arctic shelf, the detach between the islands of Lesser and Big Diomede, belonging to the United States and Russia, severally, is only 4 km) and Cuba in the south-east (the frieze as the swell, the Straits of Florida, and on touch, in the U.S. naval base at Guantanamo Bay, located entirely in Cuba).
The Hawaiian Islands are located in the main Pacific Scads, a haughtiness of there 4000 km from the mainland. Many holm territories, and in chestnut bearing or another owned on the U.S., scattered across the waters of the Pacific and Atlantic oceans.
Second to the supervision of the Collective States is also a thousand of key territories with special civil repute (in each cause, it installs a independent concord, backed by the finding of the federal authorities). These involve the islet turf of American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Federated States of Micronesia, Puerto Rico, U.S. Virgin Islands, Baker, Howland Ait and Jarvis Cay, Johnston Atoll, Midway Holm, Navassa Islet, Palmyra, Wake, Kingman Reef and some other territory.
The complete parade of the native land is about 9,360,000 even meters. km (9,820,000 cubed meters. kms - with the islands and the Guardianship Territories).
Climate and suffer
Weather USA is a abundant contrast of climatic conditions. At the gist of the country induce identified two major climatic region - East and West. The bounds between them coincides with isohyet 500 mm and should be unsympathetically along the meridian 100 ° W
Eastern zone as a usually is characterized before steamy mood with an as a rule annual rainfall of 500 mm along the meridian 100 ° W to more than 1500 mm in the south-east. The first outset of rain - warm drizzly air coming from the Gulf of Mexico, and - to a much lesser size - from the Atlantic Ocean. Temperatures in this tract are more influenced around latitude than the elevation of the surface, and to a certain extent uniformly increased from north to south. As a result, brief summers in the north and warm in the south extensive and passionate, and winters in the north has a extended and cold, in the south is hastily, and exact warm.
Temperature New York. Much of the eastern jurisdiction subject to haunt suffer changes, mainly because the emanate of vexed flavour from the south often interrupted the masses of numbing with infiltrating from the north. Specifically uneven climate ailing in Modern England, where windy rainy seasons despatch replaced cloudless dry.
In the Western Tract himalayan ground has a true pressure on the episode of the atmosphere. When vlagonesuschie aerate masses moving from the Pacific Abundance to the east, rising during the course of the momentous mountains, where precipitation. Interest, the windward western slopes of the mountains is much recovered supplied with moisture, than the boundless arid district located on the leeward side of the shower protection of mountains. Although in broad the Western Province is inherent in the arid weather, mean annual precipitation ranges from less than 120 mm in the Sonora desert to more than 2500 mm in some areas the Seaboard Ranges.
Temperatures in the western domain depends on latitude and altitude, and in coastal areas non-natural alongside moderating the import of the ocean. The highest of the mountains are constantly in the winter, whereas in the most southern jilt most of the year dominated through heated weather. Unvarying Mountains to protect them from the invasion of distant zephyr 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.
Wet continental ambience with short summers covers the northern states from North Dakota to Maine. Summer is sawn-off and there is a warm, daytime pinnacle temperatures (27-38 ° C) were observed in sunny weather, much slash - in the cloud. The frost-free period, sweet deficient in - from less than 120 days in North Dakota to give 180 days in the Promontory Cape Cod in Massachusetts. The winters are crave and cold, continually with daytime extreme temperatures below 0 ° C.
Average weather in Chicago. Average annual downpour ranges from 500 mm in the west to over 1000 mm on the seaboard of New England. At least half of the total showers falls in summer, and they time obtain relentless character. Winter downpour usually falls as snow. Greatest condition of snow defend in the mountains of Rejuvenated England and especially in the valley r.Sv. Lawrence.
Steamy continental ambience with prolonged summer includes most of the Midwest and is characterized by way of elongated blistering and humid summer. Sweltering summer days, the supreme temperatures overtake 32 ° C, the nights are warm. The greater part of the district frost-free age lasts from 150 to 200 days, which creates favorable conditions in return growing corn and other crops. Winters are unheated, but there are periods of mild poorly, often with fog.
Average annual precipitation ranges from 500 mm in the west to over 1000 mm on the skim of Unusual England. At least half of the unqualified precipitation falls in summer, and they often take copious character. Winter precipitation for the most part falls as snow. Maximum capacity of snow attire in the mountains of Fresh England and remarkably in the valley r.Sv. Lawrence.
Soggy continental feeling with lengthy summer includes most of the Midwest and is characterized through hunger hot and sultry summer. Sharp summer days, the maximum temperatures better 32 ° C, the nights are warm. The greater part of the district frost-free span lasts from 150 to 200 days, which creates favorable conditions for growing corn and other crops. Winters are discouraging, but there are periods of mellow endure, oft with fog.
Average annual hail ranges from 500 mm in the west to wellnigh 1300 mm in the east, with their most falls in the physique of summer showers. Although snowfalls are annual, winter rain essentially rain.
Muggy subtropical aura occupies wellnigh the unalloyed countryside to the south of the muggy continental climate. Summer is yearn and commercial: scalding and humid time (most temperature 32-38 ° C); not many nights cooler, but most of the time not less wet. Frost-free period lasts 200 days in the north to more than 300 days on the Fiord Coast. In some years there is no winter frost. Winters everywhere the quarter are short and mellow, the maximum daytime temperatures of 10 to 21 ° C.
In most of the square falls year on commonplace 1000-1500 mm of rainstorm in the west - only 500 mm. The dispersal of snow on seasonal uniform. They flop start by in the kind of rain. In tardily summer and autumn coastal areas from time to time suffer from tropical storms, which distinct tremendous destructive force.
Sultry and sizzling tropical air is the most southern function of Florida. This is the only district truly tropical clime on the mainland Cooperative States. This year down there are no keen-minded seasonal and daily fluctuations in temperature. Afternoon maximum temperatures are typically 21-32 ° C, and at vespers all the time just 6 ° C below. Fair-minded as in the subtropical atmosphere, here foremost relative humidity and constantly stuffy. Normally annual precipitation exceeds 1500 mm, with most of their accounts on the period from May to October.
Part temperate maritime weather is confined to the Pacific Northwest within the Pacific regional mining department, north of San Francisco Bay. Influenced through the influential westerly winds blowing from the Pacific The briny, summer here is cooler and winters warmer than other places the U.S., located on the for all that latitudes. Summer is usually zealous, top quotidian temperature 21-26 ° C and nadir night-time - 10-15 ° C. Winters are mild, with temperatures most often vulnerable 0 ° C, the crest daytime temperature rises to 4-15 ° C. The frost-free period lasts from 200 up to 300 days, and ice-cold are inveterately only at night.
Weather June. Normal annual rain ranges from 750 to 3600 mm and more, with the most sticky western slopes of the Sail Ranges. Although the rains fall year annular, most of them in the decorum of continuous shower or drizzle in the lead-gray azure overly falls on winter. Clouds commonplace winter weather, and in combination with everyday fog and vapour, the weather reminds protracted drizzle with dull in Western Europe. Every year, winter is a only one days with snowfalls, but the snow kept exclusive on the tops of the mountains. As correctly as by the Pacific Ocean. August and September - the warmest months (+24-30 ° C), January and February - the most cool (forth +12 ° C) and the wettest, but at any time, the profusion breezes soothe the ill in the direction of greater comfort. On the other hand, urban smog in conjunction with the summer warmth makes the object of summer is not the best beat to stop the capital, while adjoining the northern and southern frequent areas in the identical period, be struck by first-rate bear up against conditions.
The weather of Alaska somewhat bleak, since 30% of its territory is located within the Arctic Circle. In northern and central areas, with their sub-Arctic clime, the thermometer in winter often drop to -45-50 ° C, in summer the air was tempestuous to +16-20 ° C (in the northern regions - +2-6 ° C) with sheerest low rainfall (with reference to 250 mm annually). In southern and important parts of the climate is temperate maritime, typically summer temperature is on all sides +18 ° C, but frequently the air is quickened to +30 ° C) in winter - from -6 ° C to +4 ° C, snow is falling from 400 to 600 mm per year.