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Interior Alaska is the central region of Alaska's territory, roughly bounded by the Alaska Range to the south and the Brooks Range to the north. It is largely wilderness. Mountains include Denali in the Alaska Range, the Wrangell Mountains, and the Ray Mountains. The native people of the interior are Alaskan Athabaskans. The largest city in the interior is Fairbanks, Alaska's second-largest city, in the Tanana Valley. Other towns include North Pole, just southeast of Fairbanks, Eagle, Tok, Glennallen, Delta Junction, Nenana, Anderson, Healy and Cantwell. The interior region has an estimated population of 113,154.
Interior Alaska experiences extreme seasonal temperature variability. Winter temperatures in Fairbanks average −12 °F (−24 °C) and summer temperatures average +62 °F (+17 °C). Temperatures there have been recorded as low as −65 °F (−54 °C) in mid-winter, and as high as +99 °F (+37 °C) in summer. Both the highest and lowest temperature records for the state were set in the Interior, with 100 °F (38 °C) in Fort Yukon and −80 °F (−62 °C) in Prospect Creek. [1] Temperatures within a given winter are highly variable as well; extended cold snaps of forty below zero can be followed by unseasonable warmth with temperatures above freezing due to chinook wind effects.
Summers can be warm and dry for extended periods creating ideal fire weather conditions. Weak thunderstorms produce mostly dry lightning, sparking wildfires that are mostly left to burn themselves out as they are often far from populated areas. The 2004 season set a new record with over 6,600,000 acres (27,000 km2) burned.
The average annual precipitation in Fairbanks is 11.3 inches (287 mm). Most of this comes in the form of snow during the winter. Most storms in the interior of Alaska originate in the Gulf of Alaska, south of the state, though these storms often have limited precipitation due to a rain shadow effect caused by the Alaska Range.
On clear winter nights, the aurora borealis can often be seen in the sky. Like all subarctic regions, the months from May to July in the summer have no night, only a twilight during the night hours. The months of November to January have little daylight. Fairbanks receives an average 21 hours of daylight between May 10 and August 2 each summer, and an average of less than four hours of daylight between November 18 and January 24 each winter.
The interior of Alaska is largely underlined by discontinuous permafrost, which grades to continuous permafrost as the Arctic Circle is approached.
Climate data for Fairbanks International Airport, Alaska (1991–2020 normals, [lower-alpha 1] extremes 1904–present [lower-alpha 2] ) | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 52 (11) | 50 (10) | 56 (13) | 76 (24) | 90 (32) | 96 (36) | 99 (37) | 93 (34) | 84 (29) | 72 (22) | 54 (12) | 58 (14) | 99 (37) |
Mean maximum °F (°C) | 29.7 (−1.3) | 35.4 (1.9) | 45.1 (7.3) | 61.9 (16.6) | 76.6 (24.8) | 85.1 (29.5) | 85.0 (29.4) | 80.0 (26.7) | 69.3 (20.7) | 54.8 (12.7) | 32.7 (0.4) | 32.2 (0.1) | 87.5 (30.8) |
Mean daily maximum °F (°C) | 0.6 (−17.4) | 11.6 (−11.3) | 24.9 (−3.9) | 45.6 (7.6) | 62.1 (16.7) | 71.8 (22.1) | 72.7 (22.6) | 66.4 (19.1) | 55.3 (12.9) | 34.1 (1.2) | 12.3 (−10.9) | 4.3 (−15.4) | 38.5 (3.6) |
Daily mean °F (°C) | −8.3 (−22.4) | 0.2 (−17.7) | 10.7 (−11.8) | 33.7 (0.9) | 50.3 (10.2) | 61.0 (16.1) | 62.9 (17.2) | 57.0 (13.9) | 45.8 (7.7) | 26.2 (−3.2) | 4.1 (−15.5) | −4.3 (−20.2) | 28.3 (−2.1) |
Mean daily minimum °F (°C) | −17.2 (−27.3) | −11.2 (−24.0) | −3.4 (−19.7) | 21.7 (−5.7) | 38.6 (3.7) | 50.2 (10.1) | 53.1 (11.7) | 47.6 (8.7) | 36.2 (2.3) | 18.4 (−7.6) | −4.1 (−20.1) | −13.0 (−25.0) | 18.1 (−7.7) |
Mean minimum °F (°C) | −43.2 (−41.8) | −36.0 (−37.8) | −27.3 (−32.9) | −2.4 (−19.1) | 26.2 (−3.2) | 40.2 (4.6) | 44.2 (6.8) | 36.1 (2.3) | 23.4 (−4.8) | −2.9 (−19.4) | −25.9 (−32.2) | −36.5 (−38.1) | −45.8 (−43.2) |
Record low °F (°C) | −66 (−54) | −58 (−50) | −56 (−49) | −32 (−36) | −1 (−18) | 28 (−2) | 30 (−1) | 21 (−6) | 3 (−16) | −28 (−33) | −54 (−48) | −62 (−52) | −66 (−54) |
Average precipitation inches (mm) | 0.61 (15) | 0.52 (13) | 0.40 (10) | 0.34 (8.6) | 0.54 (14) | 1.48 (38) | 2.26 (57) | 2.10 (53) | 1.35 (34) | 0.76 (19) | 0.74 (19) | 0.57 (14) | 11.67 (296) |
Average snowfall inches (cm) | 10.2 (26) | 10.0 (25) | 6.5 (17) | 3.1 (7.9) | 0.9 (2.3) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 2.3 (5.8) | 8.2 (21) | 12.5 (32) | 10.9 (28) | 64.6 (164) |
Average precipitation days (≥ 0.01 in) | 8.7 | 6.9 | 5.7 | 3.7 | 6.2 | 10.8 | 12.8 | 13.5 | 10.7 | 9.8 | 9.5 | 8.8 | 107.1 |
Average snowy days (≥ 0.1 in) | 10.2 | 8.3 | 6.7 | 2.6 | 0.6 | 0.0 | 0.0 | 0.0 | 1.3 | 8.3 | 11.2 | 10.4 | 59.6 |
Average relative humidity (%) | 69.3 | 65.5 | 60.4 | 56.2 | 50.2 | 56.6 | 64.2 | 70.8 | 68.9 | 74.1 | 72.8 | 71.3 | 65.0 |
Average dew point °F (°C) | −17.0 (−27.2) | −11.9 (−24.4) | −0.2 (−17.9) | 16.2 (−8.8) | 29.7 (−1.3) | 42.6 (5.9) | 48.7 (9.3) | 46.0 (7.8) | 34.5 (1.4) | 17.4 (−8.1) | −3.8 (−19.9) | −13.2 (−25.1) | 15.8 (−9.0) |
Mean monthly sunshine hours | 54 | 120 | 224 | 302 | 319 | 334 | 274 | 164 | 122 | 85 | 71 | 36 | 2,105 |
Source 1: [2] [3] NOAA (relative humidity 1961–1990) [4] [5] [6] [7] | |||||||||||||
Source 2: Danish Meteorological Institute (sun, 1931–1960) [8] |
While the vast majority of indigenous Native people of Interior Alaska are Athabaskan, large Yup'ik and Iñupiaq populations reside in Fairbanks. [9]
The federally recognized tribes of Interior Alaska: [9]
Yukon–Koyukuk Census Area is a census area in the U.S. state of Alaska. As of the 2020 census, the population was 5,343, down from 5,588 in 2010. With an area of 147,842.51 sq mi (382,910.3 km2), it is the largest of any county or county-equivalent in the United States, or slightly larger than the entire state of Montana. It is part of the unorganized borough of Alaska and therefore has no borough seat. Its largest communities are the cities of Galena, in the west, and Fort Yukon, in the northeast.
Healy is a census-designated place (CDP) and the borough seat of Denali Borough in the U.S. state of Alaska. The population was 966 at the time of the 2020 census, down from 1,021 in 2010.
College is a census-designated place (CDP) in Fairbanks North Star Borough, Alaska, United States. It is part of the Fairbanks, Alaska Metropolitan Statistical Area. As of the 2020 census, the population was 11,332, down from 12,964 in 2010. College is the third-most populated CDP in Alaska.
Fairbanks is a home rule city and the borough seat of the Fairbanks North Star Borough, Alaska, United States. Fairbanks is the largest city in the Interior region of Alaska and the second largest in the state. The 2020 Census put the population of the city proper at 32,515 and the population of the Fairbanks North Star Borough at 95,655, making it the second most populous metropolitan area in Alaska after Anchorage. The Metropolitan Statistical Area encompasses all of the Fairbanks North Star Borough and is the northernmost Metropolitan Statistical Area in the United States, located 196 miles by road south of the Arctic Circle.
Big Delta is a census-designated place (CDP) in Southeast Fairbanks Census Area, Alaska, United States. The population was 591 at the 2010 census, down from 749 in 2000. Big Delta is at the confluence of the Delta River and the Tanana River and gets its name from the huge river delta formed by the confluence.
Delta Junction is a city in the Southeast Fairbanks Census Area, Alaska, United States. As of the 2010 census, the population was 958, up from 840 in 2000. The 2018 estimate was down to 931. The city is located a short distance south of the confluence of the Delta River with the Tanana River, which is at Big Delta. It is about 160 km (99 mi) south of Fairbanks. Native inhabitants are Tanana Athabaskans.
Allakaket is a second class city in the Yukon-Koyukuk Census Area of the Unorganized Borough of the U.S. state of Alaska. The population was 105 at the 2010 census.
Evansville is a census-designated place (CDP) in Yukon-Koyukuk Census Area, Alaska, United States. The population was 15 at the 2010 census, down from 28 in 2000. The community is adjacent to Bettles. The community is named after Wilford Evans, Sr, who took part in the founding of Bettles Lodge.
Galena is a city in the Yukon-Koyukuk Census Area in the U.S. state of Alaska. At the 2020 census the population was 472, slightly up from 470 in 2010. Galena was established in 1918, and a military airfield was built adjacent to the city during World War II. The city was incorporated in 1971.
Minto is a census-designated place (CDP) in Yukon-Koyukuk Census Area, Alaska, United States. As of the 2020 census, the population of the CDP is 150, down from 210 in 2010. The name is an anglicized version of the Lower Tanana Athabaskan name Menhti, meaning 'among the lakes'. After repeated flooding the village was relocated to its present location in 1969. The former village site is now known as Old Minto.
Nenana (Lower Tanana: Toghotili; is a home rule city in the Yukon-Koyukuk Census Area of the Unorganized Borough in Interior Alaska. Nenana developed as a Lower Tanana community at the confluence where the tributary Nenana River enters the Tanana. The population was 378 at the 2010 census, down from 402 in 2000.
Tanana is a city in the Yukon-Koyukuk Census Area in the U.S. state of Alaska. At the 2010 census the population was 246, down from 308 in 2000. It was formerly known as Clachotin, adopted by Canadian French.
The Tanana River is a 584-mile (940 km) tributary of the Yukon River in the U.S. state of Alaska. According to linguist and anthropologist William Bright, the name is from the Koyukon (Athabaskan) tene no, tenene, literally "trail river".
The Tanana Valley is a lowland region in central Alaska in the United States, on the north side of the Alaska Range, where the Tanana River emerges from the mountains. Traditional inhabitants of the valley are Tanana Athabaskans of Alaskan Athabaskans.
Lower Tanana is an endangered language spoken in Interior Alaska in the lower Tanana River villages of Minto and Nenana. Of about 380 Tanana people in the two villages, about 30 still speak the language. As of 2010, “Speakers who grew up with Lower Tanana as their first language can be found only in the 250-person village of Minto.” It is one of the large family of Athabaskan languages, also known as Dené.
Tanana Chiefs Conference (TCC), the traditional tribal consortium of the 42 villages of Interior Alaska, is based on a belief in tribal self-determination and the need for regional Native unity. TCC is a non-profit organization that works toward meeting the needs and challenges for more than 10,000 Alaska Natives in Interior Alaska.
Alaska occupies the northwestern portion of the North American continent and is bordered only by Canada on the east. It is one of two U.S. states not bordered by another state; Hawaii is the other. Alaska has more ocean coastline than all of the other U.S. states combined. About 500 miles (800 km) of Canadian territory consisting of British Columbia separate Alaska from Washington U.S. state. Alaska is thus an exclave of the United States that is part of the continental U.S. and the U.S. West Coast, but is not part of the contiguous U.S.
Anchorage, Alaska has a subarctic climate with the code Dsc according to the Köppen climate classification due to its short, cool summers. The weather on any given day is very unpredictable. Some winters feature several feet of snow and cold temperatures, while the summers are typically mild but are cool compared to the contiguous US and interior Alaska. Because of Anchorage's high latitude, summer days are very long and winter daylight hours are very short. The longest day of sunlight being 18hrs and 21 minutes, and shortest being 5 hours and 28 minutes. Anchorage is often cloudy during the winter, which decreases the amount of sunlight experienced by residents.
The Tanana Athabaskans, Tanana Athabascans, or Tanana Athapaskans are an Alaskan Athabaskan people from the Athabaskan-speaking ethnolinguistic group. They are the original inhabitants of the Tanana River drainage basin in east-central Alaska Interior, United States and a little part lived in Yukon, Canada. Tanana River Athabaskan peoples are called in Lower Tanana and Koyukon language Ten Hʉt'ænæ, in Gwich'in language Tanan Gwich'in. In Alaska, where they are the oldest, there are three or four groups identified by the languages they speak. These are the Tanana proper or Lower Tanana and/or Middle Tanana, Tanacross or Tanana Crossing, and Upper Tanana. The Tanana Athabaskan culture is a hunter-gatherer culture with a matrilineal system. Tanana Athabaskans were semi-nomadic and lived in semi-permanent settlements in the Tanana Valley lowlands. Traditional Athabaskan land use includes fall hunting of moose, caribou, Dall sheep, and small terrestrial animals, as well as trapping. The Athabaskans did not have any formal tribal organization. Tanana Athabaskans were strictly territorial and used hunting and gathering practices in their semi-nomadic way of life and dispersed habitation patterns. Each small band of 20–40 people normally had a central winter camp with several seasonal hunting and fishing camps, and they moved cyclically, depending on the season and availability of resources.
The Interior Yukon-Alaska alpine tundra ecoregion covers alpine, sub-alpine, and boreal forest areas along the cordillera of Interior Alaska and south-central Yukon Territory. Geologically, they are the disjunct uplands of the Yukon-Tanana Terrane plus a southern extension of the Brooks Range. The cover is extensive 'dark taiga' of closed spruce forest, open forest of other species, and alpine vegetation at higher altitudes. The region is mostly wilderness and relatively untouched by human development.