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Unified States of America located in the prime corner of the North American continent, occupying a immense district between 25 th and 57 th parallels of north latitude. To the east, washed Atlantic, in the south - the Deep of Mexico Caribbean Sea in the west and south-west - the Pacific Multitude, the northern and north-west beach of Alaska - the Arctic Ocean.
U.S. borders with Canada in the north (the thoroughgoing ultimately of 8893 km bounds, including 2,477 km in Alaska), with Mexico in the south (3141 km), with Russia in the north-west (sea purfle to the Bering Limiting and the Arctic shelf, the detach between the islands of Lesser and Obese Diomede, connection to the Coordinated States and Russia, respectively, is solely 4 km) and Cuba in the south-east (the dado as the sea, the Straits of Florida, and on earth, in the U.S. naval headquarter at Guantanamo Bay, located entirely in Cuba).
The Hawaiian Islands are located in the chief Pacific Ocean, a haughtiness of about 4000 km from the mainland. Many holm territories, and in chestnut form or another owned nigh the U.S., scattered across the waters of the Pacific and Atlantic oceans.
Second to the supervision of the Synergetic States is also a digit of key territories with distinguishable civil status (in each case, it installs a classify agreement, backed before the conclusion of the federal authorities). These contain the ait turf of American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Federated States of Micronesia, Puerto Rico, U.S. Virgin Islands, Baker, Howland Island and Jarvis Eyot, Johnston Atoll, Midway Island, Navassa Islet, Palmyra, Wake, Kingman Reef and some other territory.
The thoroughgoing area of the state is about 9,360,000 even meters. km (9,820,000 square meters. kms - with the islands and the Trust Territories).
Climate and live through
Feeling USA is a horrendous variety of climatic conditions. At the gist of the countryside induce identified two primary climatic dominion - East and West. The boundary between them coincides with isohyet 500 mm and should be roughly along the meridian 100 ° W
Eastern region as a whole is characterized during clammy mood with an average annual rainfall of 500 mm along the meridian 100 ° W to more than 1500 mm in the south-east. The main provenience of shower - pleasant clammy air coming from the Opening of Mexico, and - to a much lesser size - from the Atlantic Ocean. Temperatures in this quarter are more influenced aside latitude than the tallness of the surface, and to a certain extent uniformly increased from north to south. As a consequence, deficient rare summers in the north and irritated in the south extensive and spicy, and winters in the north has a extensive and nippy, in the south is knee-pants, and dialect right warm.
Temperature for NY. Much of the eastern region source to continuing live through changes, mainly because the rush of animated air from the south repeatedly interrupted the masses of cold air infiltrating from the north. Singularly uneven weather in Unknown England, where prolix rainy seasons apace replaced cloudless dry.
In the Western Ambit huge ground has a excessive influence on the episode of the atmosphere. When vlagonesuschie reveal masses moving from the Pacific Lots to the east, rising more than the great mountains, where precipitation. Allow for, the windward western slopes of the mountains is much think twice supplied with moisture, than the boundless arid field located on the leeward side of the shower cover of mountains. Although in general the Western Province is hereditary in the arid ambience, mean annual precipitation ranges from less than 120 mm in the Sonora barren to more than 2500 mm in some areas the Seaboard Ranges.
Temperatures in the western ambit depends on latitude and altitude, and in coastal areas affected past moderating the contact of the ocean. The highest of the mountains are constantly in the winter, whereas in the most southern desolate most of the year dominated via biting weather. Unstable Mountains to watch over them from the invasion of frigid haughtiness 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 aura with terse summers covers the northern states from North Dakota to Maine. Summer is dumpy and there is a warm, daytime maximum temperatures (27-38 ° C) were observed in fair weather, much farther down - in the cloud. The frost-free term, underfunded - from less than 120 days in North Dakota to about 180 days in the Ness Headland Cod in Massachusetts. The winters are large and aloof, in many cases with daytime maximum temperatures cheaper than 0 ° C.
Average weather Chicago city. Average annual sleet ranges from 500 mm in the west to over 1000 mm on the seaboard of Modern England. At least half of the whole showers falls in summer, and they often have torrential character. Winter downpour usually falls as snow. Maximum condition of snow sheathe in the mountains of Chic England and notably in the valley r.Sv. Lawrence.
Sticky continental feeling with long summer includes most of the Midwest and is characterized nearby great hot and sultry summer. Hot summer days, the maximum temperatures overtake 32 ° C, the nights are warm. The greater part of the partition frost-free term lasts from 150 to 200 days, which creates favorable conditions in return growing corn and other crops. Winters are cold, but there are periods of kind poorly, over with fog.
Ordinary annual rain ranges from 500 mm in the west to over 1000 mm on the coast of Unusual England. At least half of the total snow falls in summer, and they in many cases take torrential character. Winter sleet for the most part falls as snow. Highest point duty of snow attire in the mountains of Fresh England and above all in the valley r.Sv. Lawrence.
Steamy continental ambience with big summer includes most of the Midwest and is characterized by way of lengthy scalding and wet summer. Piping hot summer days, the highest temperatures exceed 32 ° C, the nights are warm. The greater get of the locale frost-free term lasts from 150 to 200 days, which creates favorable conditions for growing corn and other crops. Winters are depressing, but there are periods of mild indisposed, repeatedly with fog.
Normally annual precipitation ranges from 500 mm in the west to nearly 1300 mm in the east, with their most falls in the form of summer showers. Although snowfalls are annual, winter rain essentially rain.
Muggy subtropical mood occupies about the undivided rural area to the south of the damp continental climate. Summer is elongated and commercial: hot and humid date (maximum temperature 32-38 ° C); only one nights cooler, but most of the time not less wet. Frost-free term lasts 200 days in the north to more than 300 days on the Split Coast. In some years there is no winter frost. Winters everywhere in the quarter are epigrammatic and mild, the greatest daytime temperatures of 10 to 21 ° C.
In most of the arrondissement falls year on average 1000-1500 mm of shower in the west - just 500 mm. The allotment of precipitation on seasonal uniform. They fall in general in the kind of rain. In late summer and autumn coastal areas from time to time suffer from tropical storms, which distinct tremendous destructive force.
Humid and sizzling tropical ambiance is the most southern shard of Florida. This is the one area really tropical ambience on the mainland Collaborative States. This year round there are no trenchant seasonal and daily fluctuations in temperature. Afternoon apogee temperatures are typically 21-32 ° C, and at night just 6 ° C below. Fair-minded as in the subtropical feeling, here high applicable humidity and constantly stuffy. Normally annual showers exceeds 1500 mm, with most of their accounts for the space from May to October.
Territory temperate maritime weather is confined to the Pacific Northwest within the Pacific regional mining district, north of San Francisco Bay. Influenced next to 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 unaltered latitudes. Summer is chiefly irritated, limit quotidian temperature 21-26 ° C and least gloom - 10-15 ° C. Winters are pleasant, with temperatures usually above 0 ° C, the highest daytime temperature rises to 4-15 ° C. The frost-free interval lasts from 200 up to 300 days, and glacial are inveterately alone at night.
Weather May. Average annual rain ranges from 750 to 3600 mm and more, with the most sticky western slopes of the Glide Ranges. Although the rains taking year annular, most of them in the form of unceasing rain or drizzle in the lead-gray sky falls on winter. Clouds commonplace winter withstand, and in solution with frequent square and fog, the stand reminds marathon drizzle with overcast 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 by the Pacific Ocean. August and September - the warmest months (+24-30 ° C), January and February - the most cool (wide +12 ° C) and the wettest, but at any set, the gobs breezes soothe the out of sorts in the direction of greater comfort. On the other hand, urban smog in conjunction with the summer fury makes the point of summer is not the best beat to by the metropolis, while adjoining the northern and southern reserve areas in the unmodified space, have excellent bear up against conditions.
The weather of Alaska more sour, 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 come by to -45-50 ° C, in summer the air was heated to +16-20 ° C (in the northern regions - +2-6 ° C) with remarkably down rainfall (with reference to 250 mm annually). In southern and key parts of the clime is equable maritime, normally summer temperature is on all sides +18 ° C, but again the flavour is heated to +30 ° C) in winter - from -6 ° C to +4 ° C, drizzle is falling from 400 to 600 mm per year.