Tribe (This forum is retired. All topics are read-only.) > Real-life Na'vi Tribe

Climate research on states in U.S

(1/3) > >>

Tsanten Eywa 'eveng:
I am doing some research for climate's over different states in USA. Because I think I will never go with to buy land from owners, I fear that we can be fooled. So I've heard that in USA, you can choose a part of land on your own, If it was that I heard

Oregon's climate:
Oregon's climate – particularly in the western part of the state – is heavily influenced by the Pacific Ocean. The climate is mild, but periods of extreme hot and cold can affect parts of the state. Oregon's population centers, which lie mostly in the western part of the state, are moist and mild, while the lightly populated high deserts of Central and Eastern Oregon are much drier. Oregon's highest recorded temperature is 119 °F (48 °C) at Pendleton on August 10, 1898, and the lowest recorded temperature is −54 °F (−48 °C) at Seneca on February 10, 1933.

Idaho's climate:
Idaho has much variation in its climate. Although the state's western border is located about 350 miles (560 km) from the Pacific Ocean, the maritime influence is still felt in Idaho, especially in the winter when cloud cover, humidity, and precipitation are at their maximum extent. This influence has a moderating effect in the winter where temperatures are not as low as would otherwise be expected for a northern state with a predominantly elevated altitude. The maritime influence is least prominent in the eastern part of the state where the precipitation patterns are often reversed, with wetter summers and drier winters, and seasonal temperature differences more extreme, showing a more semi-arid continental climate.
Climate in Idaho can be hot, although extended periods over 100 °F (38 °C) for the maximum temperature are rare, except for the lowest point in elevation, Lewiston, which correspondingly sees very little snow. Hot summer days are tempered by the low relative humidity and cooler evenings during summer months since, for most of the state, the highest diurnal difference in temperature is often in the summer. Winters can be cold, although extended periods of bitter cold weather below zero are unusual. This is what led the railroad tycoon Harriman family to develop the most famous ski resort, Sun Valley. Idaho's all time highest temperature of 118 °F (48 °C) was recorded at Orofino on July 28, 1934; the all time lowest temperature of −60 °F (−51 °C) was recorded at Island Park Dam on January 18, 1943.

Wyoming's climate:
SpoilerWyoming's climate is generally semi-arid and continental (Köppen climate classification BSk), and is drier and windier in comparison to most of the United States with greater temperature extremes. Much of this is due to the topography of the state. Summers in Wyoming are warm with July high temperatures averaging between 85 °F (29 °C) and 95 °F (35 °C) in most of the state. With increasing elevation, however, this average drops rapidly with locations above 9,000 feet (2,700 m) averaging around 70 °F (21 °C). Summer nights throughout the state are characterized by a rapid cooldown with even the hottest locations averaging in the 50–60 °F (10–16 °C) range at night. In most of the state, most of the precipitation tends to fall in the late spring and early summer. Winters are cold, but are variable with periods of sometimes extreme cold interspersed between generally mild periods, with Chinook winds providing unusually warm temperatures in some locations. Wyoming is a dry state with much of the land receiving less than 10 inches (250 mm) of rainfall per year. Precipitation depends on elevation with lower areas in the Big Horn Basin averaging 5–8 inches (130–200 mm) (making the area nearly a true desert). The lower areas in the North and on the eastern plains typically average around 10–12 inches (250–300 mm), making the climate there semi-arid. Some mountain areas do receive a good amount of precipitation, 20 inches (510 mm) or more, much of it as snow, sometimes 200 inches (510 cm) or more annually. The states highest recorded temperature is 114 °F (46 °C) at Basin on July 12, 1900 and the lowest recorded temperature is −66 °F (−54 °C) at Riverside on February 9, 1933.
The climate of any area in Wyoming is largely determined by its latitude, altitude and local topography. When put together, these factors have a lot to do with airflow patterns, temperature variations, precipitation and humidity brought in by the weather systems that migrate eastward. In winter, Wyoming is often beneath the jet stream, or north of it, which accounts for its frequent strong winds, blasts of Arctic air and precipitation, all the necessary ingredients for great snow conditions at Wyoming's northwestern ski areas. In summer, the jet stream retreats northward to Canada, leaving the state's weather mild and pleasant at a time when the majority of Wyoming's visitors choose to arrive. Jackson, located at 6,230 feet (1,900 m) above sea level and surrounded by mountains, can expect a high temperature in July of 80 °F (27 °C). The average is more likely to be 65 °F (18 °C). The closest National Weather Station (in Riverton on the other side of the Wind River Mountains at 4,955 feet (1,510 m)) reports slightly warmer July weather.
The number of thunderstorm days vary across the state with the southeastern plains of the state having the most days of thunderstorm activity. Thunderstorm activity in the state is highest during the late spring and early summer. The southeastern corner of the state is the most vulnerable part of the state to tornado activity. Moving away from that point and westwards, the incidence of tornadoes drops dramatically with the west part of the state showing little vulnerability. Tornadoes, where they occur, tend to be small and brief, unlike some of those that occur a little further east.
Nebraska's climate:
SpoilerTwo major climatic zones are represented in Nebraska: the eastern half of the state has a humid continental climate, and the western half, a semi-arid climate (Koppen BSk). The entire state experiences wide seasonal variations in temperature and precipitation. Average temperatures are fairly uniform across Nebraska, with hot summers and generally cold winters, while average annual precipitation decreases east to west from about 31.5 inches (800 mm) in the southeast corner of the state to about 13.8 inches (350 mm) in the Panhandle. Humidity also decreases significantly from east to west. Snowfall across the state is fairly even, with most of Nebraska receiving between 25 and 35 inches (65 to 90 cm) of snow annually. Nebraska's highest recorded temperature is 118 °F (48 °C) at Minden on July 24, 1936 and the lowest recorded temperature is −47 °F (−44 °C) at Camp Clarke on February 12, 1899. Nebraska is in Tornado Alley; thunderstorms are common in the spring and summer months, and violent thunderstorms and tornadoes happen primarily during the spring and summer, though they can also occur in the autumn. The chinook winds from the Rocky Mountains provide a temporary moderating effect on temperatures in western Nebraska during the winter months.
Iowa's climate:
SpoilerIowa, like most of the Midwest, has a humid continental climate throughout the state with extremes of both heat and cold. The average annual temperature at Des Moines is 50 °F (10 °C); for some locations in the north the figure is under 45 °F (7 °C), while Keokuk, on the Mississippi River, averages 52 °F (11 °C). Winters are often harsh and snowfall is common.
Spring ushers in the beginning of the severe weather season. Iowa averages about 50 days of thunderstorm activity per year. Tornadoes are common during the spring and summer months, with an average of 37 tornadoes in a single year. In 2008, twelve people were killed by tornadoes in Iowa, making it the deadliest year since 1968 and also the second most tornadoes in a year with 105, matching the total from 2001.
Iowa summers are known for heat and humidity, with daytime temperatures often near 90 °F (32 °C) and sometimes exceeding 100 °F (38 °C). Average winters in the state have been known to drop well below freezing, even dropping below −18 °C (−0 °F). Iowa's all time hottest temperature of 118 °F (48 °C) was recorded at Keokuk on July 20, 1934; the all time lowest temperature of −47 °F (−44 °C) was recorded at Elkader on February 3, 1996.
Iowa has a relatively smooth gradient of varying precipitation across the state, with areas in the southeast of the state receiving an average of over 38 inches (97 cm) of rain annually, and the northwest of the state receiving less than 28 inches (71 cm). he pattern of precipitation across Iowa is seasonal, with more rain falling in the summer months. In Des Moines, roughly in the center of the state, over two-thirds of the 34.72 inches (88.2 cm) of rain falls from April through September, and about half of the average annual precipitation falls from May through August.
Illinois's climate:
SpoilerBecause of its nearly 400-mile distance between its northernmost and southernmost extremes, as well as its mid-continental situation, Illinois has a widely varying climate. Most of Illinois has a humid continental climate, with hot, humid summers and cold winters. The southernmost part of the state, from about Carbondale southward, borders on a humid subtropical climate (Koppen Cfa), with more moderate winters. Average yearly precipitation for Illinois varies from just over 48 inches (1,219 mm) at the southern tip to around 35 inches (889 mm) in the northern portion of the state. Normal annual snowfall exceeds 38 inches (965 mm) in the Chicago area, while the southern portion of the state normally receives less than 14 inches (356 mm). The all time high temperature was 117 °F (47 °C), recorded on July 14, 1954, at East St. Louis, while the all time low temperature was −36 °F (−38 °C), recorded on January 5, 1999, at Congerville. Illinois averages around 51 days of thunderstorm activity a year, which ranks somewhat above average in the number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes with an average of 35 occurring annually, which puts much of the state at around five tornadoes per 10,000 square miles (30,000 km2) annually. While tornadoes are no more powerful in Illinois than other states, the nation's deadliest tornadoes on record have occurred largely in Illinois because it is the most populous state in Tornado Alley. The Tri-State Tornado of 1925 killed 695 people in three states; 613 of the victims died in Illinois. Modern developments in storm tracking have caused death tolls from tornadoes to dramatically decline since the 1960s, with no major losses of life in the state since the 1967 tornado storm in northern Illinois.
Kentucky's climate:
Located within the southeastern interior portion of North America, Kentucky has a climate that can best be described as a humid subtropical climate. Monthly average temperatures in Kentucky range from a summer daytime high of 87 °F (31 °C) to a winter low of 23 °F (−5 °C). The average precipitation is 46 inches (1,200 mm) a year. Kentucky experiences all four seasons, usually with striking variations in the severity of summer and winter from year to year. Kentucky's highest recorded temperature was 114 °F (46 °C) at Greensburg on July 28, 1930 while the lowest recorded temperature was −34 °F (−37 °C) at Cynthiana on January 28, 1963.

Arkansas's climate:
SpoilerArkansas generally has a humid subtropical climate, which borders on humid continental in some northern highland areas. While not bordering the Gulf of Mexico, Arkansas is still close enough to this warm, large body of water for it to influence the weather in the state. Generally, Arkansas has hot, humid summers and cold, slightly drier winters. In Little Rock, the daily high temperatures average around 93 °F (34 °C) with lows around 73 °F (23 °C) in the month of July. In January highs average around 51 °F (11 °C) and lows around 32 °F (0 °C). In Siloam Springs in the northwest part of the state, the average high and low temperatures in July are 89 °F (32 °C) and 67 °F (19 °C) and in January the average high and lows are 44 °F (7 °C) and 23 °F (−5 °C). Annual precipitation throughout the state averages between about 40 and 60 inches (1,000 and 1,500 mm); somewhat wetter in the south and drier in the northern part of the state. Snowfall is common, more so in the north half of the state, which usually gets several snowfalls each winter. This is not only due to its closer proximity to the plains states, but also to the higher elevations found throughout the Ozark and Ouachita mountains. The half of the state south of Little Rock gets less snow, and is more apt to see ice storms, however, sleet and freezing rain are expected throughout the state during the winter months, and can significantly impact travel and day to day life. Arkansas' all time record high is 120 °F (49 °C) at Ozark on August 10, 1936; the all time record low is −29 °F (−34 °C) at Pond on February 13, 1905.
Arkansas is known for extreme weather. A typical year will see thunderstorms, tornadoes, hail, snow and ice storms. Between both the Great Plains and the Gulf States, Arkansas receives around 60 days of thunderstorms. A few of the most destructive tornadoes in U.S. history have struck the state. While being sufficiently away from the coast to be safe from a direct hit from a hurricane, Arkansas can often get the remnants of a tropical system which dumps tremendous amounts of rain in a short time and often spawns smaller tornadoes.
Colorado's climate:
The climate of Colorado is quite complex compared to most of the United States. Unlike in other states, southern Colorado is not necessarily warmer than northern Colorado. Most of Colorado is made up of mountains, foothills, high plains, and desert lands. Mountains and surrounding valleys greatly affect local climate. As a general rule, with an increase in elevation comes a decrease in temperature and an increase in precipitation. Northeast, east, and southeast Colorado are mostly the high plains, while Northern Colorado is a mix of high plains, foothills, and mountains. Northwest and west Colorado are predominantly mountainous, with some desert lands mixed in. Southwest and southern Colorado are a complex mixture of desert and mountain areas.

Utah's climate:
SpoilerUtah features a dry, semi-arid to desert climate, although its many mountains feature a large variety of climates, with the highest points in the Uinta Mountains being above the timberline. The dry weather is a result of the state's location in the rain shadow of the Sierra Nevada in California. The eastern half of the state lies in the rain shadow of the Wasatch Mountains. The primary source of precipitation for the state is the Pacific Ocean, with the state usually lying in the path of large Pacific storms from October to May. In summer, the state, especially southern and eastern Utah, lies in the path of monsoon moisture from the Gulf of California. Most of the lowland areas receive less than 12 inches (305 mm) of precipitation annually, although the I-15 corridor, including the densely-populated Wasatch Front, receive approximately 15 inches (381 mm). The Great Salt Lake Desert is the driest area of the state, with less than 5 inches (127 mm). Snowfall is common in all but the far southern valleys. Although St. George only receives about 3 inches (8 cm) per year, Salt Lake City sees about 60 inches (152 cm), enhanced by the lake-effect snow from the Great Salt Lake, which increases snowfall totals to the south, southeast, and east of the lake. Some areas of the Wasatch Range in the path of the lake-effect receive up to 500 inches (1,270 cm) per year. The consistently dry, fluffy snow led Utah's ski industry to adopt the slogan "the Greatest Snow on Earth" in the 1980s. In the winter, temperature inversions are a common phenomenon across Utah's low basins and valleys, leading to thick haze and fog that can sometimes last for weeks at a time, especially in the Uintah Basin. Although at other times of year its air quality is good, winter inversions give Salt Lake City some of the worst wintertime pollution in the country.

Utah's temperatures are extreme, with cold temperatures in winter due to its elevation, and very hot summers statewide (with the exception of mountain areas and high mountain valleys). Utah is usually protected from major blasts of cold air by mountains lying north and east of the state, although major Arctic blasts can occasionally reach the state. Average January high temperatures range from around 30 °F (−1 °C) in some northern valleys to almost 55 °F (13 °C) in St. George. Temperatures dropping below 0 °F (−18 °C) should be expected on occasion in most areas of the state most years, although some areas see it often (for example, the town of Randolph averages about 50 days per year with temperatures dropping that low). In July, average highs range from about 85 °F (29 °C) to 100 °F (38 °C). However, the low humidity and high elevation typically leads to large temperature variations, leading to cool nights most summer days. The record high temperature in Utah was 118 °F (48 °C), recorded south of St. George on July 4, 2007, and the record low was −69 °F (−56 °C), recorded at Peter Sinks in the Bear River Mountains of northern Utah on February 1, 1985. However, the record low for an inhabited location is −49 °F (−45 °C) at Woodruff on December 12, 1932.

Utah, like most of the western United States, has few days of thunderstorms. On average there are fewer than 40 days of thunderstorm activity during the year, although these storms can be briefly intense when they do occur. They are most likely to occur during monsoon season from about mid-July through mid-September, especially in southern and eastern Utah. Dry lightning strikes and the general dry weather often spark wildfires in summer, while intense thunderstorms can lead to flash flooding, especially in the rugged terrain of southern Utah. Although spring is the wettest season in northern Utah, late summer is the wettest period for much of southern and eastern Utah. Tornadoes are uncommon in Utah, with an average of two striking the state yearly, rarely higher than EF1 intensity. One exception of note, however, was the unprecedented F2 Salt Lake City Tornado that moved directly across downtown Salt Lake City on August 11, 1999, killing 1 person, injuring 60 others, and causing approximately $170 million in damage. The only other reported tornado fatality in Utah's history was a 7-year old girl who was killed while camping in Summit County on July 6, 1884. The last tornado of above (E)F0 intensity occurred on September 8, 2002, when an F2 tornado hit Manti. On August 11, 1993, an F3 tornado hit the Uinta Mountains north of Duchesne at an elevation of 10,500 feet (3,200 m), causing some damage to a Boy Scouts campsite. This is the strongest tornado ever recorded in Utah.
Kansas's climate:
SpoilerKansas contains three climatic types, according to the Köppen climate classification: it has humid continental, semi-arid steppe, and humid subtropical. The eastern two-thirds of the state (especially the northeastern portion) has a humid continental climate, with cool to cold winters and hot, often humid summers. Most of the precipitation falls in the summer and spring. The western third of the state – from about the U.S. Route 281 corridor westward – has a semiarid steppe climate. Summers are hot, often very hot, and generally less humid. Winters are highly changeable between warm and very cold. The western region receives an average of about 16 inches (410 mm) of precipitation per year. Chinook winds in the winter can warm western Kansas all the way into the 80 °F (27 °C) range. The far south-central and southeastern reaches of the state have a humid subtropical climate with hot, humid summers, milder winters and more precipitation than the rest of the state. Although not strictly falling in all of the zones, some features of all three climates can be found in most of the state, with droughts and changeable weather between dry and humid not uncommon, and both warm and cold spells in the winter.
Precipitation ranges from about 47 inches (1200 mm) annually in the southeast of the state, to about 16 inches (400 mm) in the southwest. Snowfall ranges from around 5 inches (130 mm) in the fringes of the south, to 35 inches (900 mm) in the far northwest. Frost-free days range from more than 200 days in the south, to 130 days in the northwest. Thus, Kansas is the 9th or 10th sunniest state in the country, depending on the source. Western Kansas is as sunny as California and Arizona.
Kansas is prone to severe weather, especially in the spring and early summer. In spite of the frequent sunshine throughout much of the state, due to its location at a climatic boundary prone to multiple air masses the state is vulnerable to strong and severe thunderstorms . Many of these storms become Supercell thunderstorms. These can spawn tornadoes, often of EF3 strength or higher. According to statistics from the National Climatic Data Center, Kansas has reported more tornadoes (for the period January 1, 1950 through October 31, 2006) than any state except for Texas – marginally even more than Oklahoma. It has also – along with Alabama – reported more F5 or EF5 tornadoes than any other state. These are the most powerful of all tornadoes. Kansas averages over 50 tornadoes annually. Severe thunderstorms sometimes drop very large Hail over Kansas as well as bringing flash flooding and damaging straight line winds.
According to NOAA, the all-time highest temperature recorded in Kansas is 121 °F (49.4 °C) on July 24, 1936, near Alton, and the all-time low is −40 °F (−40 °C) on February 13, 1905, near Lebanon.
Kansas's record high of 121 °F (49.4 °C) ties with North Dakota for the fifth-highest record high in an American state, behind California (134 °F/56.7 °C), Arizona (128 °F/53.3 °C), Nevada (125 °F/51.7 °C), and New Mexico (122 °F/50 °C).
Missouri's climate:
SpoilerMissouri generally has a humid continental climate (Köppen climate classification Dfa) with cold winters and hot and humid summers. In the southern part of the state, particularly in the Bootheel, the climate turns into a humid subtropical climate (Koppen Cfa). Located in the interior United States, Missouri often experiences extremes in temperatures. Without high mountains or oceans nearby to moderate temperature, its climate is alternately influenced by air from the cold Arctic and the hot and humid Gulf of Mexico. Missouri's highest recorded temperature is 118 °F (48 °C) at Warsaw and Union on July 14, 1954 while the lowest recorded temperature is −40 °F (−40 °C) also at Warsaw on February 13, 1905.
Missouri also receives extreme weather in the form of thunderstorms and powerful tornadoes. The most recent EF5 tornado in the state to cause damage and casualties was the 2011 Joplin tornado, which destroyed roughly 1/3 of the city of Joplin. The tornado caused an estimated $1–3 billion dollars in damages, killed 159 (+1 non-tornadic), and injured over 1,000 people. The tornado was the first EF5 to hit the state since 1957. The tornado was the deadliest in the U.S. since 1947, making it the 7th deadliest tornado in American history, but the 27th deadliest in the world.

Yawne Zize’ite:
I'm not a member of the tribe and don't intend to be (I like modern conveniences, especially the medicines keeping me alive), but I do live in the USA and wanted to say a few words about the climate.

Compared to Western Europe, all but the Pacific fringe of the US is harsh. In the southern parts, high temperatures are usually over 30 C in the summer and frequently over 35 C. Winter daytime temperatures are usually in the single digits C, but they sometimes fall below freezing; the South doesn't get much snow, but every few years an ice storm comes. In the Midwest, temperatures over 35 C are rare, but snow is an annual occurrence and the coldest winter nights can be below -20 C. New England doesn't have the extremes, since summer highs rarely go above the lower 30s and winter lows are usually around -10 C, but expect several months of constant snow cover in the winter. Areas around the Great Lakes can receive meters of snow. The deserts, of course, have extreme temperatures.

Something else Western Europeans may not be prepared for: the US is at a much lower latitude, so summer days are short and winter days are long. Today only had 15 hours of light. On the other hand, the shortest day of the year in my town will still have 9.5 hours of light. This also means shorter periods of twilight.

The US also has more natural disasters. Thunderstorms are very common in most areas in spring and summer; they're not too dangerous, but it's better to be inside if possible. They're worth paying attention to because strong thunderstorms, in addition to blowing down tree limbs (and rarely entire trees), can spawn tornadoes. I wouldn't worry much about tornado distribution over-much, because there's nothing you can do about them except move to another country (although New England doesn't get many). Generally, the farther south and west (before reaching desert), the more tornadoes.

Hurricanes are mostly a threat to coastal areas; hundreds of kilometers inland, a hurricane will have degenerated into a particularly large thunderstorm. The threat to inland areas is freshwater flooding; large thunderstorms drop lots of rain. Hurricanes do have the virtue that you have several days' warning.

Earthquakes are mostly a threat to the Pacific coast and the middle Mississippi Valley; earthquakes cause most of their damage by making structures collapse, so they might not be a factor worth considering.

Excepting Alaska and Hawaii, all of the US's active volcanoes are in the Cascade Range on the Pacific coast.

Wildfires are a serious problem in the southwestern US and California.

Native peoples survived all the natural hazards of the US without heavily built houses or weather forecasters, so researching what they did to cope with threats would be extremely valuable. For hurricanes in particular, there should be some information on how South Pacific islanders deal with cyclones that could be applied as well.

Thank you very much for this very detailed research. This will certainly end up on our new website.

I think we are able to adapt to new climates and temperatures between 25 and 35°C. In fact, as long as we know what we get into, we can adapt, for most of us.

Seze Mune:
Perhaps you should research the availability of fresh water as well.  In states like Arkansas and Colorado and others, water is becoming a scarce commodity and people are beginning to fight over water rights.


--- Quote from: Seze Mune on June 12, 2012, 08:49:12 pm ---Perhaps you should research the availability of fresh water as well.  In states like Arkansas and Colorado and others, water is becoming a scarce commodity and people are beginning to fight over water rights.

--- End quote ---

Absolutely! This is indeed essential (I in fact just wrote this on the draft for the project website, but forgot that detail here). If possible, also look for potential data on the toxicity of the local rivers (some can be polluted by agriculture, mining, factories, etc).


[0] Message Index

[#] Next page

Go to full version