Oklahoma experiences rain moving out on Tuesday, but more rainfall and storms are expected later in the week, offering relief but not completely ending the drought. Thursday will be an important day regarding the weather.
By 1900, as a result of the Dawes Act of 1887 and the Curtis Act of 1898, about one-half of the land previously owned by Indian tribes was owned by whites, and much of the land allotted to individual Indian heads of families also became white-owned due to sales or fraudulent deprivation.
In 1901, the Wichita Mountains Wildlife Refuge was founded, encompassing 59,020 acres.
After petitioning Congress to hand over jurisdiction, in 1905, 57 acres of land was given to Arkansas.
In 1905, the Sequoyah Statehood Convention laid the groundwork for the Oklahoma Statehood Convention, even though attempts to create an all-Indian state named Oklahoma and a later attempt to create an all-Indian state named Sequoyah had failed.
On June 16, 1906, Congress passed a statute enabling the people of Oklahoma and Indian Territories, along with Arizona and New Mexico, to form a constitution and state government in order to be admitted as a state.
On November 16, 1907, President Theodore Roosevelt issued Presidential Proclamation no. 780, officially establishing Oklahoma as the 46th state in the Union.
In 1907, Oklahoma acquired the Oklahoma Panhandle territory upon gaining statehood.
On November 11, 1911, the temperature in Oklahoma City reached 83 °F (28 °C), then a cold front caused it to plummet to 17 °F (−8 °C) by midnight.
In 1912, Oklahoma experienced a tornado outbreak due to a warm front traveling along a stalled cold front, resulting in an average of about one tornado per hour.
Social tensions were exacerbated by the revival of the Ku Klux Klan after 1915.
In late September 1918, the first cases of the Spanish flu appeared in Oklahoma, overwhelming health workers and local governing bodies, with the American Red Cross mobilizing to mitigate shortages in Oklahoma City.
In 1919, the Spanish flu pandemic ebbed in Oklahoma, with rough estimates indicating that approximately 100,000 people fell ill with the disease before the pandemic's end. Around 7,500 proved fatal, placing total mortality rates for the state at roughly 7.5%.
In 1920 Oklahoma was carried by the Republican Party in the presidential elections.
In 1920, Oklahoma's first radio station, WKY in Oklahoma City, began broadcasting.
In 1921, the Tulsa race massacre occurred, with White mobs attacking Black people and carrying out a pogrom in Greenwood, resulting in the destruction of 35 city blocks, $1.8 million in property damage, and an estimated death toll of between 75 and 300 people.
In 1927, Oklahoman businessman Cyrus Avery, known as the "Father of Route 66", began the campaign to create U.S. Route 66, using a stretch of highway from Amarillo, Texas to Tulsa, Oklahoma to form the original portion of Highway 66. Avery spearheaded the creation of the U.S. Highway 66 Association to oversee the planning of Route 66, based in his hometown of Tulsa.
In 1928, Oklahoma was carried by the Republican Party in the presidential elections.
In 1934, Oklahoma experienced a severe drought with weeks of rainlessness and highs over 100 °F (38 °C).
In 1939, John Steinbeck's novel "The Grapes of Wrath" was published, popularizing a negative cultural stereotype of Oklahomans as uneducated, poverty-stricken Dust Bowl-era farmers.
In 1940, 90.1% of Oklahoma's population was non-Hispanic White.
After the 1948 election, Oklahoma turned firmly Republican.
In 1949, broadcast television in Oklahoma began with KFOR-TV (then WKY-TV) in Oklahoma City and KOTV-TV in Tulsa starting their broadcasts a few months apart.
Over a twenty-year period ending in 1950, Oklahoma experienced its only historical decline in population, dropping 6.9 percent as impoverished families migrated out of the state after the Dust Bowl.
Since 1952, Oklahoma has been carried by Republican presidential candidates in all but one election.
In 1953, Ridge Bond and the cast of Oklahoma! were featured on a CBS Omnibus television broadcast.
In 1954, Oklahoma experienced a severe drought with weeks of rainlessness and highs over 100 °F (38 °C).
In 1962, ballerina Yvonne Chouteau and husband Miguel Terekhov founded the University of Oklahoma's dance program, the first fully accredited program of its kind in the United States.
In 1964, Lyndon B. Johnson's landslide victory was the only election since 1952 where Oklahoma was not carried by a Republican presidential candidate.
In 1973, the Public Service Company of Oklahoma proposed the Black Fox Nuclear Power Plant near Inola, Oklahoma.
In 1976, the Medieval Fair of Norman was first held on the south oval of the University of Oklahoma campus and became Oklahoma's first medieval fair.
Oklahoma has capital punishment as a legal sentence since 1976.
In 1979, protestors disrupted the construction of the Black Fox Nuclear Power Plant project after the Three Mile Island accident.
Between 1980 and 2014, male life expectancy in Oklahoma increased by an average of 4.0 years, compared to a male national average of a 6.7 year increase. Life expectancy for females in Oklahoma between 1980 and 2014, increased by 1.0 years, compared to a female national average of a 4.0 year increase.
In 1980, Oklahoma experienced a severe drought with weeks of rainlessness and highs over 100 °F (38 °C).
In 1980, TBN, a Christian religious television network, built its first entirely TBN-owned affiliate in Oklahoma City.
In 1980, a collapse in the energy industry began, leading to the loss of nearly 90,000 energy-related jobs between 1980 and 2000.
In 1982, the Black Fox Nuclear Power Plant project was cancelled after nine years of legal challenges.
In 1985, the US Supreme Court Case Oklahoma v. Arkansas decided that land would remain Arkansas, even though the Choctaw had not been notified or asked about the territory being handed over.
Since 1987, the Oklahoma City Pride Parade has been held annually in late June in the gay district of Oklahoma City on 39th and Penn.
In 1990, 81% of Oklahoma's population was White.
In 1990, 95% of the resident population in Oklahoma spoke only English at home.
Between 1992 and 2002, the growth of total education expenditures in Oklahoma ranked 22nd in the nation.
On April 19, 1995, Timothy McVeigh detonated a bomb outside the Alfred P. Murrah Federal Building in Oklahoma City, resulting in 168 deaths, including 19 children.
Between 1980 and 2000, Oklahoma lost nearly 90,000 energy-related jobs because of a collapse in the energy industry.
Between 2000 and 2010, the leading cities in population growth were Blanchard (172.4%), Elgin (78.2%), Jenks (77.0%), Piedmont (56.7%), Bixby (56.6%), and Owasso (56.3%).
Following the 2000 census, the Oklahoma delegation to the U.S. House of Representatives was reduced from six to five representatives.
In 2000, 92.6% of Oklahoma residents, specifically 2,977,187 individuals aged five and older, primarily spoke only English at home.
In 2000, Oklahoma had approximately 5,000 Jewish individuals and 6,000 Muslim individuals, each group having ten congregations.
In 2000, Oklahoma ranked 45th in physicians per capita, but slightly above the national average in hospital beds per 100,000 people.
In 2000, Spanish was the second most common language spoken in Oklahoma, with 141,060 speakers. German had 13,444 speakers, and Vietnamese was spoken by 11,330 people. Other languages included French, Chinese, Korean, Arabic, and various Asian and African languages.
On June 11, 2001, Timothy McVeigh was executed by the federal government for his role in the 1995 Oklahoma City bombing.
In 2001, Southern Hills Country Club hosted the most recent U.S. Open.
Between 1992 and 2002, the growth of total education expenditures in Oklahoma ranked 22nd in the nation.
In 2003, Oklahoma Gas & Electric (OG&E) became the first electric company in Oklahoma to generate electricity from wind farms.
In 2003, the Medieval Fair of Norman, having outgrown its previous location at the Duck Pond in Norman, moved to Reaves Park.
In 2004, data was collected which would later be used in the 2006 Catalogue for Philanthropy to rank Oklahomans 7th in the nation for overall generosity.
In 2004, the National Institute for Early Education Research rated Oklahoma first in the United States regarding standards, quality, and access to pre-kindergarten education.
Since 2004, the Republican candidate has won every single county in Oklahoma in each election.
In 2005, Oklahoma was the 21st-largest recipient of medical funding from the federal government, totaling $75,801,364, with immunizations, bioterrorism preparedness, and health education being the top three most funded medical items.
In 2005, international exports from Oklahoma's manufacturing industry totaled $4.3 billion, accounting for 3.6 percent of its economic impact.
In 2005, it was estimated that Oklahoma's ancestral makeup was primarily German (14.5%), American (13.1%), Irish (11.8%), English (9.6%), and African American (8.1%). Native Americans accounted for 11.4% (including 7.9% Cherokee), although only 8.1% identified as solely American Indian.
In 2005, nearly 25 percent of Oklahomans between the age of 18 and 64 did not have health insurance, the fifth-highest rate in the nation.
In 2005, the Cherokee Nation implemented a ten-year plan to grow new speakers of the Cherokee language from childhood and encourage exclusive use at home, aiming for 80% fluency within fifty years.
In 2011, data collected from 2005 to 2009 indicated about 5% of Oklahoma's residents were born outside the United States.
In 2006, Oklahoma had over 220 newspapers, with 177 being weekly publications and 48 being daily publications.
In 2006, Oklahoma had over 500 radio stations broadcasting through various local or nationally owned networks, with five universities operating non-commercial public radio stations/networks.
In 2006, Tulsa's Oktoberfest was named one of the top 10 in the world by USA Today.
In 2006, the Catalogue for Philanthropy ranked Oklahomans 7th in the nation for overall generosity, based on data from 2004.
On July 1, 2007, statistics showed that the state of Oklahoma produces an average of 38,278-degree-holders per completions component (July 1, 2007 – June 30, 2008).
On November 16, 2007, the 100th anniversary of Oklahoma's statehood was celebrated as part of the state's centennial celebration, which was named the top event in the United States for 2007 by the American Bus Association.
Between 2007 and 2008, the high school dropout rate in Oklahoma decreased from 3.1% to 2.5%.
In 2007, Oklahoma ranked last among the 50 states in a study by the Commonwealth Fund on health care performance.
In 2007, Oklahoma was rated as having the 7th-lowest tax burden in the nation and was considered one of the most business-friendly states.
In 2007, Tulsa's Mayfest festival entertained more than 375,000 people in four days.
In 2007, oil accounted for $35 billion in Oklahoma's economy.
In 2007, six of Oklahoma's universities were placed in the Princeton Review's list of best 122 regional colleges, and three made the list of top colleges for best value.
In early 2007, Lawmakers began seeking funding to connect the Heartland Flyer to Tulsa, but nothing came of this.
On June 30, 2008, statistics showed that the state of Oklahoma produces an average of 38,278-degree-holders per completions component (July 1, 2007 – June 30, 2008).
According to the Pew Research Center's data from 2008, around 80% of Oklahoma's religious adherents were Christian. The percentage of Catholics was lower than the national average, while Evangelical Protestants made up a larger percentage, tying with Arkansas for the highest percentage among states.
Between 2007 and 2008, the high school dropout rate in Oklahoma decreased from 3.1% to 2.5%.
In 2008, I-44 in Oklahoma City was Oklahoma's busiest highway, with a daily traffic volume of 123,300 cars.
In 2008, Oklahoma had 638,817 students enrolled in public schools. Oklahoma spent $7,755 per student.
In 2008, Oklahoma was the only state where Barack Obama failed to carry any counties.
In 2008, according to the Pew Research Center, approximately 80% of Oklahoma's religious adherents were Christian.
In 2009, Oklahoma had 83,700 commercial oil wells producing 65.374 million barrels of crude oil and held 8.5% of the nation's natural gas supply, with 1.673 trillion cubic feet being produced.
In 2009, Oklahoma ranked 13th for total energy consumption per capita, and the state's energy costs were eighth-lowest in the nation.
In 2009, Oklahoma ranked low in usage of renewable energy. 94% of its electricity was generated by non-renewable sources, including 25% from coal and 46% from natural gas.
In 2009, Oklahoma was the 5th most obese state in the nation, with 30.3 percent of its population at or near obesity.
In 2011, data collected from 2005 to 2009 indicated about 5% of Oklahoma's residents were born outside the United States.
In the 2009–10 school year, Oklahoma had the highest enrollment of Native American students in the nation with 126,078 students.
Since 2009, 139 women in Oklahoma have been imprisoned solely for failure-to-protect charges.
At the 2010 census, Oklahoma's population was 3,751,675.
Between 2010 and 2014, it was estimated that 125,989 Oklahomans had lived with at least one undocumented family member.
In 2010, Love's Travel Stops & Country Stores ranked 18th, QuikTrip ranked 37th, and Hobby Lobby ranked 198th on the Forbes list of largest private companies.
In 2010, Oklahoma had the nation's third-highest number of bridges classified as structurally deficient, with nearly 5,212 bridges in disrepair, including 235 National Highway System bridges.
In 2010, Oklahoma's football program ranked 12th in attendance among American colleges, with an average of 84,738 people attending its home games.
In 2010, Oklahoma's largest cities were Oklahoma City (579,999), Tulsa (391,906), Norman (110,925), Broken Arrow (98,850), Lawton (96,867), Edmond (81,405), Moore (55,081), Midwest City (54,371), Enid (49,379), and Stillwater (45,688).
In 2010, Will Rogers World Airport in Oklahoma City averaged a yearly passenger count of more than 3.5 million, while Tulsa International Airport served more than 1.3 million boardings.
In 2010, the English language was officially recognized in the state of Oklahoma.
In 2010, the Tulsa Shock joined the Women's National Basketball Association (WNBA).
In 2010, the census recorded that 8.6% of Oklahoma's population identified as American Indian and Alaska Native, 7.4% as Black or African American, 1.7% as Asian, and 0.1% as Native Hawaiian and other Pacific Islander. Additionally, 4.1% identified as some other race and 5.9% as two or more races. 8.9% of the population were of Hispanic, Latino, or Spanish origin.
In 2010, the largest church memberships in Oklahoma were within the Southern Baptist Convention (886,394 members), the United Methodist Church (282,347), the Roman Catholic Church (178,430), the Assemblies of God (85,926), and the Church of Jesus Christ of Latter-day Saints (LDS Church) (47,349).
Between 1976 and mid-2011, Oklahoma had the highest per capita execution rate in the nation.
In 2011, Oklahoma experienced a severe drought with weeks of rainlessness and highs over 100 °F (38 °C).
In 2011, Oklahoma was ranked eighth for installed wind energy capacity.
In 2011, data from 2005 to 2009 indicated about 5% of Oklahoma's residents were born outside the United States.
In 2011, minorities made up 47.3% of Oklahoma's population under the age of one, indicating that they had at least one parent who identified as a non-Hispanic white.
In mid-2011, Oklahoma had a civilian labor force of 1.7 million, and non-farm employment fluctuated around 1.5 million. The government sector provided the most jobs.
In 2012, Oklahoma had 85,500 farms which produced $4.3 billion in animal products, less than $1 billion in crop output, and contributed more than $6.1 billion to the state's GDP.
In 2012, the House passed HCR 1024, which would change the state motto from "Labor Omnia Vincit" to "Oklahoma—In God We Trust!".
From 2013 to 2019 Oklahoma had an all-Republican congressional delegation.
Between 2010 and 2014, it was estimated that 125,989 Oklahomans had lived with at least one undocumented family member.
In 2014, males in Oklahoma lived an average of 73.7 years, and females lived an average of 78.5 years, both lower than the national averages.
In 2014, the Oklahoma City Blue, of the NBA G League, relocated to Oklahoma City from Tulsa, where they were formerly known as the Tulsa 66ers.
In 2014, the Pew Research Center reported that the majority of Oklahoma's religious adherents remained Christian at 79% of the population. Evangelical Protestants remained the largest religious group in the state at 47%.
In 2015, the Tulsa Shock relocated to Dallas–Fort Worth and became the Dallas Wings.
Registered Republicans were a minority in Oklahoma until 2015.
On May 31, 2016, several cities in Oklahoma experienced record setting flooding.
In 2016, Oklahoma City was the largest city in the United States carried by Republican Donald Trump.
In 2016, teachers in Oklahoma had ranked 49th out of the 50 states in terms of teacher pay, according to the National Education Association.
Using 2016–2018 data, the Robert Wood Johnson Foundation calculated that life expectancy (all sexes) for Oklahoma counties ranged from 71.2 years for Okfuskee County to 79.7 years for Cimarron and Logan counties.
Beginning on April 2, 2018, tens of thousands of K–12 public school teachers in Oklahoma went on strike due to lack of funding.
On June 26, 2018, Oklahoma made marijuana legal for medical purposes.
In 2018, Oklahoma was described as the "world's prison capital" due to its high incarceration rate of 1,079 per 100,000 residents.
In 2018, approximately 236,882 immigrants resided in Oklahoma, making up 6% of the state's population at the time. The majority of immigrants came from Mexico, Vietnam, India, Germany, and Guatemala.
Using 2016–2018 data, the Robert Wood Johnson Foundation calculated that life expectancy (all sexes) for Oklahoma counties ranged from 71.2 years for Okfuskee County to 79.7 years for Cimarron and Logan counties.
In 2019, 53.5% of electricity was produced from natural gas and 34.6% from wind power in Oklahoma.
In 2019, a survey found that the pay raise obtained by the strike lifted the State's teacher pay ranking to 34th in the nation.
Oklahoma had an all-Republican congressional delegation until 2019.
In May 2020, Oklahoma became the first state to enact an anti-red flag law, prohibiting the acceptance of any grants or funding to enact red flag laws.
On July 9, 2020, the Supreme Court of the United States determined in McGirt v. Oklahoma that the reservations of the Five Tribes, comprising much of Eastern Oklahoma, were never disestablished by Congress and thus are still "Indian Country" for the purposes of criminal law.
According to the 2020 Public Religion Research Institute's survey, 73% of Oklahoma's population were Christian, with Evangelicalism making up 29% and Mainline Protestantism at 19%. Historically African-American and Latino churches made up 8% of the population. About 22% of the population had no religious affiliation.
As of the 2020 election, Native American voters, 16% of the state's population, are split, with urban populations supporting the Democrats, and rural reservation populaces favoring the Republicans.
In 2020, 75.5% of Oklahoma's population was White, 11.9% Hispanic or Latino, 16% American Indian and Alaska Native, 9.7% Black or African American, 3.1% Asian, 0.4% Native Hawaiian and other Pacific Islander, and 9% some other race.
In 2020, ESPN called Oklahoma City "the center of the softball universe", referring to the fast-pitch version.
In 2020, Oklahoma City had the largest metropolitan area in the state, with 1,425,695 people.
In 2020, Oklahoma City was the largest city in the United States carried by Republican Donald Trump.
The COVID-19 pandemic began in 2020 and impacted Oklahoma more than the average U.S. state.
As of March 2021, Oklahoma had no operational nuclear power plants.
Oklahoma has had an all-Republican congressional delegation since 2021.
As of December 22, 2022, Oklahoma has been impacted more by the COVID-19 pandemic (2020–2023) than the average U.S. state.
A 2022 American Community Survey estimate found that Oklahoma's population had surpassed 4 million residents for the first time.
In 2022, Southern Hills Country Club in Tulsa hosted a PGA Championship.
In April 2023, a report by The Sentencing Project highlighted Oklahoma's Failure to Protect law, noting its disproportionate impact on women and its role in imprisoning 139 women since 2009.
In June 2023, Oklahoma and Kansas state officials began seeking federal approval and funding to extend the Heartland Flyer from Oklahoma City to Newton, Kansas.
In November 2023, KDOT said the Heartland Flyer service extension would start in 2029 if approved, but could begin sooner were the project to be fast tracked.
As of December 22, 2022, Oklahoma has been impacted more by the COVID-19 pandemic (2020–2023) than the average U.S. state.
In 2023, Oklahoma's median household income ranked 46th at $59,673.
A teqball competition was held in Tulsa June 14–16, 2024.
As of 2024, Oklahoma has more than 4,700 dams, about 20% of all dams in the U.S.
In April 2025, the Oklahoma Legislature passed a non-binding concurrent resolution proclaiming Christ the King and recognizing the enduring influence of the Christian faith.
As of May 2025, the state's unemployment rate was 3.1%.
In 2025, Oklahoma's gross domestic product (GDP) was $274.4 billion and its per capita personal income was $66,660.
In 2028, Devon Park in Oklahoma City will host softball at the Summer Olympics, and the Riversport OKC complex will host canoe slalom at the Games.
KDOT indicated in November 2023 that if approved, the Heartland Flyer service would start in 2029.
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