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Of like mind States of America located in the leading corner of the North American continent, occupying a immense section between 25 th and 57 th parallels of north latitude. To the east, washed Atlantic, in the south - the Space of Mexico Caribbean Sea in the west and south-west - the Pacific The depths, the northern and north-west seaside of Alaska - the Arctic Ocean.
U.S. borders with Canada in the north (the total to the fullest extent a finally of 8893 km bounds, including 2,477 km in Alaska), with Mexico in the south (3141 km), with Russia in the north-west (quantity dado to the Bering Narrow and the Arctic shelf, the detach between the islands of Lesser and Large Diomede, belonging to the Cooperative States and Russia, separately, is just 4 km) and Cuba in the south-east (the border as the breaker, the Straits of Florida, and on land, in the U.S. naval headquarter at Guantanamo Bay, located directly in Cuba).
The Hawaiian Islands are located in the chief Pacific Ocean, a coolness of more 4000 km from the mainland. Many island territories, and in whole 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 number of isle territories with different political repute (in each at all events, it installs a classify pact, backed by the finding of the federal authorities). These include the ait quarter of American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Federated States of Micronesia, Puerto Rico, U.S. Virgin Islands, Baker, Howland Island and Jarvis Isle, Johnston Atoll, Midway Atoll, Navassa Island, Palmyra, Wake, Kingman Reef and some other territory.
The total extent of the country is about 9,360,000 l- meters. km (9,820,000 cubed meters. kms - with the islands and the Assign Territories).
Feeling and weather
Weather USA is a abundant make of climatic conditions. At the gist of the country induce identified two main climatic region - East and West. The boundary between them coincides with isohyet 500 mm and should be unsympathetically along the meridian 100 ° W
Eastern sector as a well is characterized before steamy mood with an usually annual rainfall of 500 mm along the meridian 100 ° W to more than 1500 mm in the south-east. The main source of rain - genial clammy air coming from the Sea loch of Mexico, and - to a much lesser capaciousness - from the Atlantic Ocean. Temperatures in this tract are more influenced beside latitude than the height of the face, and rather uniformly increased from north to south. As a result, terse summers in the north and warm in the south extensive and passionate, and winters in the north has a crave and cold, in the south is short, and very warm.
Weather now New York. Much of the eastern region source to everyday weather changes, mainly because the glide of warm flavour from the south often interrupted the masses of numbing with infiltrating from the north. Singularly unsettled seedy in Late England, where talkative rainy seasons hurriedly replaced cloudless dry.
In the Western Ambit huge topography has a excessive change on the circulation of the atmosphere. When vlagonesuschie current masses heart-rending from the Pacific Davy jones’s locker to the east, rising over the momentous mountains, where precipitation. Commensurate with explain, the windward western slopes of the mountains is much crap-shooter supplied with moisture, than the boundless arid area located on the leeward side of the shower cover of mountains. Although in unspecific the Western Region is inborn in the arid milieu, of course annual sleet ranges from less than 120 mm in the Sonora retribution to more than 2500 mm in some areas the Shore Ranges.
Temperatures in the western domain depends on latitude and altitude, and in coastal areas affected alongside 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 by biting weather. Unfaltering Mountains to protect them from the infraction of frigid zephyr masses from the north.
Climatic regions. On the mainland, the U.S. gives 11 climatic regions, including four in the Eastern climatic locality and seven - in the West.
Wet continental aura with momentary summers covers the northern states from North Dakota to Maine. Summer is dumpy and there is a amorous, daytime apogee temperatures (27-38 ° C) were observed in sunny poorly, much lower - in the cloud. The frost-free period, brief - from less than 120 days in North Dakota to about 180 days in the Promontory Headland Cod in Massachusetts. The winters are crave and cold, continually with daytime supreme temperatures below 0 ° C.
Temperature at Chicago. Typical annual downpour ranges from 500 mm in the west to over 1000 mm on the strand of Modern England. At least half of the whole drizzle falls in summer, and they time obtain torrential character. Winter downpour normally falls as snow. Pinnacle gift of snow cover in the mountains of New England and firstly in the valley r.Sv. Lawrence.
Sticky continental ambience with extensive summer includes most of the Midwest and is characterized by great blistering and soggy summer. Sizzling summer days, the top temperatures overstep 32 ° C, the nights are warm. The greater duty of the partition frost-free period lasts from 150 to 200 days, which creates favorable conditions in return growing corn and other crops. Winters are emotionless, but there are periods of softening survive, often with fog.
Customarily annual precipitation ranges from 500 mm in the west to over 1000 mm on the coast of New England. At least half of the total precipitation falls in summer, and they time after time be dressed torrential character. Winter sleet normally falls as snow. Maximal capacity of snow enclose in the mountains of New England and above all in the valley r.Sv. Lawrence.
Soggy continental feeling with extended summer includes most of the Midwest and is characterized by long hot and clammy summer. Unpredictable intensify summer days, the maximum temperatures better 32 ° C, the nights are warm. The greater part of the district frost-free period lasts from 150 to 200 days, which creates favorable conditions in regard to growing corn and other crops. Winters are depressing, but there are periods of mild indisposed, repeatedly with fog.
Normally annual hail ranges from 500 mm in the west to nearly 1300 mm in the east, with their most falls in the construct of summer showers. Although snowfalls are annual, winter precipitation essentially rain.
Muggy subtropical mood occupies almost the unexceptional countryside to the south of the damp continental climate. Summer is elongated and hot: hot and steamy period (limit temperature 32-38 ° C); scarcely any 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 Gulf Coast. In some years there is no winter frost. Winters everywhere in the sphere are short and mild, the greatest daytime temperatures of 10 to 21 ° C.
In most of the arrondissement falls year on customarily 1000-1500 mm of rain in the west - only 500 mm. The dissemination of precipitation on seasonal uniform. They sinking mainly in the kind of rain. In up-to-date summer and autumn coastal areas again suffer from tropical storms, which distinct tremendous bad force.
Muggy and hot tropical climate is the most southern say of Florida. This is the exclusively district in reality tropical clime on the mainland Cooperative States. This year globelike there are no keen-minded seasonal and diurnal fluctuations in temperature. Afternoon apogee temperatures are typically 21-32 ° C, and at vespers all the time just 6 ° C below. Just as in the subtropical atmosphere, here foremost applicable humidity and constantly stuffy. Mediocre annual showers exceeds 1500 mm, with most of their accounts on the duration from May to October.
Locality cool maritime ambiance is confined to the Pacific Northwest within the Pacific regional mining area, north of San Francisco Bay. Influenced through the prevailing westerly winds blowing from the Pacific The briny, summer here is cooler and winters warmer than other places the U.S., located on the verbatim at the same time latitudes. Summer is on the whole warm, limit common temperature 21-26 ° C and least night-time - 10-15 ° C. Winters are pleasant, with temperatures for the most part exposed to 0 ° C, the maximum daytime temperature rises to 4-15 ° C. The frost-free while lasts from 200 up to 300 days, and freezing are usually at best at night.
Weather December. Middling annual rain ranges from 750 to 3600 mm and more, with the most sticky western slopes of the Sea-coast Ranges. Although the rains fall year spheroid, most of them in the form of endless sunshower or drizzle in the lead-gray excessively falls on winter. Clouds usual winter bear up against, and in aggregation with frequent brown study and mist, the stand reminds everlasting drizzle with overcast in Western Europe. Every year, winter is a some days with snowfalls, but the snow kept exclusive on the tops of the mountains. As correctly as close to the Pacific Ocean. August and September - the warmest months (+24-30 ° C), January and February - the most deliberate (with respect to +12 ° C) and the wettest, but at any set, the gobs breezes soothe the poorly in the administration of greater comfort. On the other hand, urban smog in conjunction with the summer warmth makes the object of summer is not the best time to affect the capital, while abutting the northern and southern reserve areas in the unmodified era, be struck by excellent bear up against conditions.
The weather of Alaska rather bleak, since 30% of its territory is located within the Arctic Circle. In northern and central areas, with their sub-Arctic climate, the thermometer in winter over again relinquish to -45-50 ° C, in summer the air was tempestuous to +16-20 ° C (in the northern regions - +2-6 ° C) with very low rainfall (to 250 mm annually). In southern and principal parts of the clime is moderate maritime, typically summer temperature is around +18 ° C, but often the manner is heated to +30 ° C) in winter - from -6 ° C to +4 ° C, downpour is falling from 400 to 600 mm per year.