A huge heat dome is spreading across the United States and it is shattering March temperature records.

Savannah Guthrie is renewing pleas to neighbors, friends and residents of Tucson, Arizona, to jog their memories in hopes of sparking new leads in the disappearance of her mother Nancy.

Parts of California and Arizona are under extreme heat warnings again Saturday while sweltering summerlike weather stretched as far north as Nebraska — just a day into spring.

Abnormal heat on the last day of winter continues to set records in the U.S. Southwest.

Arizona has become the first state to file criminal charges against Kalshi, accusing the prediction market platform of operating an illegal gambling business within its borders.

Brayden Burries scored 21 points and hit a pair of clinching free throws with 8.3 seconds left, sending No. 2 Arizona to a 79-74 victory over No. 5 Houston on Saturday night in the Big 12 Tournament title game.

Arizona beats Iowa State 82 to 80 in a Big 12 Tournament semifinal after Jaden Bradley hits a last-second jumper.

Arizona’s Jaden Bradley hit a fall-away jumper at the buzzer, sending second-ranked Arizona to an 82-80 victory over No. 7 Iowa State in the Big 12 Tournament semifinals Friday night.

A day of fun in the sun for a Major League Baseball spring training game in the Cactus League looks like it’s about to get toasty — even by Arizona standards.

A preliminary report points to a significant mechanical problem before a deadly police helicopter crash that happened during a shootout in Flagstaff, Arizona.

The Republican leader of Arizona’s state Senate says he has complied with a federal grand jury subpoena for records related to the 2020 presidential election.

Duke was picked No. 1 in the AP men’s basketball poll for a record 150th time on Monday.

The U.S. military plans to exhume the remains of 88 sailors and Marines killed when the USS Arizona was bombed during the Japanese attack on Pearl Harbor in 1941 and who were buried as unknowns in a Honolulu cemetery.

Alex Bowman will miss the NASCAR Cup race at Phoenix after doctors diagnosed him with vertigo.

A Haitian man confined at an Arizona immigration detention center for months after the denial of his asylum application has died in the hospital.

Jaden Bradley scored 17 points, Motiejus Krivas added 13 and No. 2 Arizona clinched the outright Big 12 regular-season title with a 73-57 win over No. 6 Iowa State.

Donovan Atwell scored 18 points to lead No. 16 Texas Tech to an 82-73 victory over No. 4 Iowa State that sent the Cyclones to their first home loss of the season.

The FBI says an 8-year-old girl whose body was found on tribal lands in northern Arizona last month after she was reported missing was likely struck by a passing vehicle.

Arizona Republicans are fighting over whether to send a hard-right candidate to the general election for governor, even after recent statewide losses.

More than a dozen states are suing the Trump administration over its changes to vaccine recommendations for children.

Arizona wasn’t feeling great after losing consecutive games following a 23-0 start.

Anthony Dell’Orso tied a season high with 22 points and No. 4 Arizona toppled second-ranked Houston 73-66 on Saturday to move into sole possession of first place in the Big 12 conference.

Michigan is the No. 1 overall seed in the preliminary rankings by the committee that will select the 68-team men's field for the NCAA Tournament.

Just over half the ball/strike challenges were successful on the first day of spring training games as Major League Baseball prepared for the first regular-season use of the automated ball-strike system — the so-called robot umpires.

A federal judge has ordered a takeover of health care operations in Arizona’s prisons and will appoint an official to run the system after years of complaints about poor medical and mental health care.

Maurice Odum scored 23 points, Massamba Diop added 14 and Arizona State held on for a 72-67 upset over No. 13 Texas Tech, which lost star forward JT Toppin to an injury in the second half.

Investigators in the Nancy Guthrie disappearance say DNA from gloves did not match any entries in a national database.

Investigators working on the disappearance of “Today” show host Savannah Guthrie’s mother are consulting with Walmart management to develop leads.

Michigan is No. 1 in The Associated Press men’s college basketball poll for the first time in 13 years, ending Arizona’s nine-week reign.

The FBI says a glove containing DNA was found about two miles from Nancy Guthrie’s Arizona home and appears to match those worn by a masked person outside her front door the night she vanished.

JT Toppin scored eight of his 31 points in a dominant overtime performance and No. 16 Texas Tech sent No. 1 Arizona to its second straight loss, shocking the Wildcats 78-75 on Saturday.

The seven Western states that depend on the Colorado River have missed a deadline for the second time to agree on a plan addressing record drought and water shortages.

Nancy Guthrie’s disappearance highlights how differently police respond when a case draws national attention.

Law enforcement investigating the disappearance of “Today” show host Savannah Guthrie’s mother have blocked off a road near Nancy Guthrie’s home in Arizona.

Those frightening images of a masked man on Nancy Guthrie’s porch could provide valuable clues to investigators.

A grand jury indicted an Arizona man on two counts of first degree felony murder and dozens of other charges stemming from a state helicopter crash earlier this month that killed two people during a shootout between the defendant and police.

For those worried robots are about to take over Major League Baseball, Colorado Rockies manager Warren Schaeffer has some experience with the Automated Ball/Strike system that’s coming to stadiums this summer.

The Kansas climb picked up more steam Monday night as the No. 9 Jayhawks knocked off top-ranked Arizona 82-78.

Flory Bidunga had a double-double and No. 9 Kansas defeated top-ranked and previously unbeaten Arizona 82-78 on Monday night.

Arizona remained firmly atop The Associated Press Top 25 men’s college basketball poll for a ninth consecutive week.

The investigation into the apparent kidnapping of Nancy Guthrie, mother of "Today" show host Savannah Guthrie, continues.

Savannah Guthrie has told the potential kidnappers of her mother Nancy Guthrie that the family is prepared to pay for her safe return.

A judge has ruled that Arizona must stop enforcing abortion restrictions that predate and contradict a 2024 voter-approved constitutional amendment guaranteeing abortion rights.

An Arizona Department of Public Safety helicopter responding to a shootout between police and a suspect has crashed in an accident that killed the pilot and a trooper on board.

Arizona remains the unanimous No. 1 in the AP Top 25 men's college basketball poll.

Authorities say a man who was involved in a human smuggling operation was shot Tuesday in an exchange of gunfire with the U.S. Border Patrol and after firing at a federal helicopter.

Brayden Burries scored 29 points and made the game-saving block in the final seconds as top-ranked Arizona remained unbeaten by holding off a furious rally from No. 13 BYU for an 86-83 victory.

Arizona remains the unanimous No. 1 in the AP Top 25 men's college basketball poll.

AJ Dybantsa scored 43 points to break BYU’s freshman scoring record, leading the No. 13 Cougars to a 91-78 victory over Utah on Saturday.

Motiejus Krivas scored 17 points, Ivan Kharchenkov added 14 and the top-ranked Arizona Wildcats pulled away late to beat Cincinnati 77-51 and remain one of just three unbeaten teams in the country.

Arizona is the unanimous No. 1 in The Associated Press Top 25 men's college basketball poll for the first time.

Arizona overcame foul trouble to star forward Koa Peat with a hounding defensive effort to beat UCF 84-77 on the road.

Former U.S. Sen. Kyrsten Sinema allegedly had a romantic relationship with a member of her security detail, leading to the breakup of his marriage.

Arizona has become the bully on the block.

Koa Peat had 24 points and 10 rebounds, Tobe Awaka added 25 points and top-ranked Arizona remained undefeated with an 89-82 win over rival Arizona State.

The Arizona Diamondbacks have acquired eight-time All-Star third baseman Nolan Arenado from St. Louis for minor league pitcher Jack Martinez.

Arizona has tightened its hold on the top spot in The Associated Press men’s college basketball poll after Michigan’s loss to Wisconsin.

Former U.S. Rep. Gabby Giffords returned to the House floor on the 15th anniversary of the assassination attempt that ended her political career.

Officials in Connecticut and Arizona are defending their decision to refuse a request from the U.S. Justice Department to turn over detailed voter information.

A former Republican lawmaker in Arizona has been sentenced to probation and a five-year ban on running for public office.

The Corporation for Public Broadcasting's directors voted the organization out of business Monday.

Arizona holds onto the No. 1 spot in the AP Top 25 by a single point over Michigan.

Kevin Jennings threw for 278 yards, highlighted by an 80-yard completion on a razzle-dazzle play on the second play from scrimmage, and SMU beat No. 21 Arizona 24-19 in the Holiday Bowl on Friday night.

Arizona remains No. 1 in The Associated Press men’s college basketball poll, but Michigan is closing the gap.

A jury has sentenced a man to death in six murders in metro Phoenix in 2017, but was undecided on the punishment for his convictions in the killings of his mother and stepfather.

Brayden Burries scored 28 points, 20 of those coming during a 14-minute second-half flurry, and No. 1 Arizona rallied to beat No. 12 Alabama 96-75.

The firm hired by Michigan to search for a football coach to replace Sherrone Moore has contacted representatives for Arizona State’s Kenny Dillingham and Missouri’s Eli Drinkwitz.

Measles outbreaks in South Carolina and on the Arizona-Utah border are growing.

Arizona has taken the top spot in the AP Top 25 men's college basketball poll.

Democratic governors who met over the weekend in Arizona say the party must focus on affordability in next year's midterm elections.

In the waning seconds of a blowout win, fans at Arizona’s McKale Center started a chant of “Number 1!”.

The Major League Baseball Players' Association has gathered Arizona to discuss the future of the game and look ahead to a possible lockout next December.

Arizona Attorney General Kris Mayes is suing online retailer Temu and its parent company PDD Holdings Inc., claiming the Chinese company is stealing customers' data and violating state consumer protection laws.

Michigan has jumped to No. 3 in the AP Top 25 men’s basketball poll.

The Big 12’s championship game is set.

Florida State could have a giant Seminoles flag on standby in the Swamp on Saturday.

Purdue remained at No. 1 in The Associated Press men’s college basketball poll.

News4JAX sports reporter Jamal St. Cyr's Four Cents analysis after Sunday's 27-24 Jacksonville win over Arizona in overtime.

Jacksonville shook off a sluggish first half and four big Trevor Lawrence turnovers to escape Arizona 27-24 in overtime and stay in the playoff race.

Arizona Attorney General Kris Mayes is appealing a ruling that has stalled the criminal case against President Donald Trump’s former chief of staff Mark Meadows, former New York City Mayor Rudy Giuliani and others for trying to overturn Trump’s 2020 election loss in the state.

Jaguars season is back and our News4JAX sports staff is back with its predictions as well. Each week, we’ll unveil our predictions for the week’s game. Jacksonville (6-4) is on the road Sunday when it pays a visit to Arizona to face the Cardinals (3-7) at 4:05 p.m.

Jaden Bradley scored 21 points, Motiejus Krivas made the go-ahead basket with 1:12 left and fourth-ranked Arizona beat No. 3 UConn 71-67 on Wednesday night.

Anthony Dell'Orso scored 20 points off the bench and Jaden Bradley hit the go-ahead 3-pointer to help No. 5 Arizona rally for a 69-65 victory over 15th-ranked UCLA in the Hall of Fame Series at Intuit Dome.

An Arizona man who fled the United States years ago while on probation for sex crime convictions was arrested earlier this month in France.

Democrats are riding high after Election Day wins and some are capitalizing on the victory of New York City Mayor-Elect Zohran Mamdani.

The government shutdown has cut off funds for some school systems that rely on federal money for the bulk of their budgets.

Arizona freshman Koa Peat had a chip on his shoulder before making his college debut on Monday.

Freshman Koa Peat scored 30 points to lead No. 13 Arizona to a 93-87 win over third-ranked and defending national champion Florida in the Hall of Fame Series on Monday night.

The National Transportation Safety Board wants the owners of nearly 2,000 Learjets to urgently inspect their landing gear to make sure they won't collapse like they did in a fatal crash earlier this year involving a private jet owned by Motley Crue singer Vince Neil.

An Arizona man has been executed in the killing of four members of a family in Phoenix over 30 years ago.

Democratic Arizona Gov. Katie Hobbs has launched her reelection campaign as her party looks to bounce back nationally from sweeping losses in 2024.

Cam Ward throws for a career-high 265 yards, leading the Tennessee Titans to a 22-21 victory over the Arizona Cardinals.

A week after her decisive win in an Arizona special election for the U.S. House, Democrat Adelita Grijalva has yet to take office.

Marvin Harrison Jr. soared above a defensive back, snagged the ball at the high point and pulled it down for a key touchdown in Arizona’s comeback attempt.

Grand Canyon National Park will soon reopen portions of the North Rim to public access in the aftermath of a wildfire that destroyed a historic lodge and dozens of structures.

Houston coach Willie Fritz has seen it all in college football.

The governors of Arizona, Illinois, Maine and North Carolina have signed orders intended to make COVID-19 vaccines available in pharmacies for people without individual prescriptions.

An Arizona judge has extended a temporary restraining order blocking the Trump administration’s effort to remove Guatemalan and Honduran children living in shelters or foster care after coming to the U.S. alone.

PNC Financial plans to buy Colorado-based FirstBank for $4.1 billion.

Major League Baseball's 2025 season has seen unexpected parity among teams.