Socioeconomic Data and Applications Center (sedac)A Data Center in NASA's Earth Observing System Data and Information System (EOSDIS) — Hosted by CIESIN at Columbia University Illustration of structure, earth, north - 170158971 Annual precipitation is plentiful, reliable, and frequent. Southern Florida has a tropical climate, with all months having a mean temperature of higher than 65 °F (18 °C), a wet season from May through October, and a dry season from November through April. However, occasionally frozen precipitation (snow, sleet and/or freezing rain) can occur (more commonly in interior and northern areas) when southerly-tracking storms throw Gulf or Atlantic moisture over cold air at ground level. El nino north american weather.png 529 × 677; 64 KB. Mudslides from heavy rain can even cause problems in any mountainous areas, particularly in the Southwest. North America - North America - The warm temperate zone: On the southeast coasts of the United States, the warm temperate zone extends to the Mississippi River and over the Gulf Coast; the zone is strongly influenced by the warm, moist tropical air mass that originates over the Gulf of Mexico. Far western Texas (El Paso area) is desert, and average annual precipitation is less than twenty inches (510 mm) in westernmost Kansas and the Oklahoma Panhandle, where the climate qualifies as semi-arid. In the summer, storms are much more localized, with short-duration thunderstorms common in many areas east of 100°W and south of 40°N. In the lower Midwest (and southern Plains states, especially), temperatures can rise or drop rapidly; winds can be extreme; and clashing air masses, including hot, dry air of Mexican and/or Southwestern origin, warm, moist air from the Gulf of Mexico and cold, dry air from Canada can spawn severe thunderstorms and tornadoes, particularly from April to June. Frost and snowfall are rare but may occur when polar continental air thrusts through to the coast.  The Sonoran Desert in the southwest is home to the driest locale in the US. A Climatology of Snow-to-Liquid Ratio for the Contiguous United States. A Mediterranean climate prevails along most of the California coast, while southern Florida has a tropical climate, the warmest region on the US mainland. The Great Plains, from the South Saskatchewan River to Mexico, are semiarid, with 8 to 15 inches (200 to 380 mm) of rainfall; the high mid-continental jet stream usually is depressed southward over them, strengthening down-moving dry wind from across the Rockies and tending to fend off cyclones from tropical gulf or polar continental air masses.  Equatorward of the subtropical ridge, tropical cyclones enhance precipitation (mostly from August to October) across southern and eastern sections of the country, as well as Puerto Rico, the United States Virgin Islands, the Northern Mariana Islands, Guam, and American Samoa. The climate maps show some countries have what could be called a ‘climate twin’; China’s climate matches up with multiple areas of the United States (with guest appearances from Namibia and South Paraquay) while Canada features heavily on Russia’s climate map, though it's worth noting that some extreme sub-zero temperatures are taken out of classification. Rainmaker Mountain on Tutuila traps trade-wind rainclouds, leading to very high rainfall and a tropical rainforest climate (Köppen Af). Given the tropical air masses, summer-season thunderstorms can occur throughout the South, but they are heavier and more frequent along the Gulf Coast, South Atlantic coast (Norfolk, VA area southward), and in peninsular Florida.  In terms of deaths caused by cold waves, the same gender inequality exists; 66% of hypothermia-related deaths in 2002 were of males. The climate in the extreme north of Alaska is what would be expected for an area north of the Arctic Circle — it is an Arctic climate (Köppen ET) with long, very cold winters and short, cool summers. Minnesota/North Dakota). Some years have no rain. In the Northern Hemisphere summer, the subtropical high pressure systems move northward and closer to the United States mainland. A biome is a community of animals and plants spreading over an extensive area with a relatively uniform climate. The greatest annual snowfall level is at Mount Rainier in Washington, at 692 inches (1,758 cm); the record there was 1,122 inches (2,850 cm) in the winter of 1971–72. This coastal forest is one of the continent’s chief sources of construction timber. The North American continent encompasses several different climates, but most of the continent experiences a temperate climate. Reflecting these air-mass conflicts, central Oklahoma, including the Oklahoma City and Moore-Norman areas, has the highest frequency of tornadoes per unit land area on planet Earth, with May the highest-risk month for tornadoes throughout "Tornado Alley," from northern Texas north-northeastward toward western and central Iowa. On average, the wettest month is typically November or December; the driest, July. The extra climate zone, labeled "H" on this map, is a special zone called the highlands. The state of Alaska, on the northwestern corner of the North American continent, is largely dominated by a subarctic climate, but with a subpolar oceanic climate in the southeast (Alaska Panhandle), southwestern peninsula and Aleutian Islands, and a polar climate in the north. However, snow does occur even at the lowest elevations, primarily when Pacific moisture interacts with cold air intruding into the Pacific Northwest from western Canada (i.e. Climate within the temperate regions ranges from the cold, snowy winters of New England to the balmy, moderate weather associated with the Mediterranean or Southern California. The northern half of the Great Plains (Nebraska northward), northern Midwest, Great Lakes, and New England states have a humid continental climate. Usually occur within 5–10° latitude (North and South) of the equator. Hurricanes are an annual hazard along the Gulf of Mexico and up the lower Mississippi valley. In the Northern Hemisphere summer, high pressure in the Pacific Ocean builds toward the California coast, resulting in a northwesterly airflow, creating the cool, dry, and stable weather conditions prevalent along the West Coast in summer. Click to launch the full-size image and see the text in the selected language. both Dakotas, Nebraska, Iowa and Minnesota). More recently, the western US experienced widespread drought from 1999 to 2004. Parts of California experience a desert climate, Northern Canada has a polar climate and some of the Californian coast experiences a Mediterranean climate. With summers of 80 to 82 °F (27 to 28 °C), the mean annual temperature range is lower than the usual daily range, a characteristic which is markedly different from most of North America. Climatic regions of North America continent, geography science. Grassland, desert, and tundra communities, The European attitudes toward the environment, The role of Mexico, the West Indies, and Central America, The Mexican and the Central American segments. They sometimes bring rain, but can bring snow or ice across the South, mostly in interior or northern areas. A humid subtropical climate is found along and south of a mostly east-west line from the Virginia/Maryland capes (north of the greater Norfolk, Virginia area), westward to approximately northern Oklahoma, north of the greater Oklahoma City area. Lows range from the 60 °F (16 °C)s in summer to 25 to 35 °F (−4 to 2 °C) in winter. www.Richters.com There are eight major climate zones in North America based on heating degree-days, average temperatures and precipitation. Explore a range of easy-to-understand climate maps in a single interface. The Gulf and South Atlantic states have a humid subtropical climate with mostly mild winters and hot, humid summers. In the summer months, average highs in cities like Seattle and Portland are from 70 to 75 °F (21 to 26 °C) with lows from 50 to 59 °F (10 to 15 °C), while in winter daily highs are from 40 to 45 °F (4 to 9 °C) and overnight lows from 30 to 38 °F (−1 to 4 °C). , See also: Climate of American Samoa, Climate of Guam, Climate of the Northern Mariana Islands. Illustration about North America climate zones, vector geographic infographics. Summers in the Pacific Northwest are generally cool, especially along the coastline. Average daily lows in winter range from 20 °F (−7 °C)s north to 40 °F (4 °C)s along the Gulf and far South Atlantic coasts, with 50 °F (10 °C)s in Florida and coastal south Texas. The "dryline," separating hot, dry air of Mexican/Southwestern U.S. origin from warm, moist air from the Gulf of Mexico, often causes severe, occasionally violent, thunderstorms to fire in central and eastern Texas, Oklahoma and Kansas; these sometimes contribute toward the hailstorms and tornado outbreaks that the Southern Plains are well known for. The faulted and glaciated coasts, with great fjords and perennial rivers, attract fish inland and thus facilitate fishing.  Hawaii and the U.S. territories also have tropical climates.. TandLGuru North American Countries KS2 Geography Knowledge Organisers Bundle! The climate of North America can be broadly divided into eight different climate types: Deciduous forest – Four distinct seasons with warm summers and cold, wet winters. El nino north american weather fr.png 529 × 677; 72 KB. This climate is dominated by the doldrums low-pressure system all year round, so has no natural seasons. The Southwest has the worst droughts; one is thought to have lasted over 500 years and to have decimated the Anasazi people. Precipitation (whether by annual amount, annual distribution or characteristic[s]) varies significantly across the United States and its possessions. Along the Atlantic seaboard, the humid subtropical climate zone extends southward into central Florida. The northeastern part of the territory is very wet, with a tropical rainforest climate (Köppen Af). Making Sense of Minisplits. North America Cities in This Class: Af: Tropical Rainforest: Year–round average precipitation of at least 60 mm (2.4 in). Weather and climate; North America; TandLGuru Mexico Knowledge Organiser! All of North America is divided into climate zones based on the two parameters of temperature and moisture. 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