NEW ORLEANS (AP) — Powerful storms tore roofs off an apartment building and a nursing home in a small town in Oklahoma and threatened more communities across the country Tuesday with weather ranging from fire in the Southern High Plains to blizzards in the Midwest.

Dust storms blinded drivers in the Southwest, tornadoes were possible in the South and blizzard conditions descended on the Central Plains.

In New Orleans, high winds were forcing some changes to Mardi Gras in New Orleans. The city moved up and shortened the celebration's two biggest parades, hoping to wrap them up before high winds moved in.

The weather wasn’t stopping Shalaska Jones and her 2-year-old daughter from waving at passing Mardi Gras floats Tuesday and hoping to catch one of the coveted coconuts thrown to the crowd.

“We was coming out rain, sleet or snow,” Jones said.

The alarming weather expected Tuesday could be one of the first big tests for the National Weather Service after hundreds of forecasters were fired last week as part of President Donald Trump's moves to slash the size of the federal government. Former employees said the firing of meteorologists who make crucial local forecasts across the U.S. could put lives at risk, though it was too soon to know the impact on forecasts and warnings for this storm.

Nation faces a number of weather threats

Storms that swept through Texas and Oklahoma early Tuesday morning brought high winds and rain, overturning tractor-trailers and damaging roofs. Power outages were climbing Tuesday morning in the storm's wake, with nearly 400,000 customers without power in Texas and another 25,000 knocked offline in Oklahoma, according to PowerOutage.us, which tracks outages nationwide.

In the 16,000-resident city of Ada, Oklahoma, where the apartment and nursing home roofs were torn away, the damage indicates there was likely a tornado that touched down early Tuesday morning as a line of powerful thunderstorms rumbled across the state, said Bruce Thoren, a meteorologist with the National Weather Service.

Gusts up to 85 mph were recorded in the area, he said. There were no immediate reports of injuries, said Jeff Rollins, the emergency management director in the nearby town of Byng, who was assisting Ada.

In North Texas, strong thunderstorms with gusts over 70 mph damaged apartments, schools and RVs on Tuesday. At the Las Haciendas Apartments in Irving, northwest of Dallas, strong winds blew out windows and the brick siding along the walls of one of the buildings. A nearby grocery store's sign was damaged and its parking lot littered with tree limbs and power lines.

The storms knocked out power to several Irving schools, prompting some canceled classes and early releases. In Plano, north of Dallas, winds tore off parts of a high school's metal roof. In Parker County, west of Fort Worth, firefighters responded after at least three RV trailers were overturned by strong winds.

The Central Plains and Midwest were bracing for blizzard conditions later Tuesday that forecasters warned could “make travel treacherous and potentially life-threatening.” The Nebraska Department of Transportation said conditions could mean low visibility and whiteout conditions across the state and urged travelers to adjust their plans for Tuesday afternoon and into the night.

In Des Moines, Iowa, gusts up to 65 mph (105 kph) were expected Tuesday night — a rare occurrence, forecasters said.

“In the past 20, 30 years, we’ve seen maybe only two or three events that have been this strong as far as the winds are concerned,” said Craig Cogil, a meteorologist at the agency's Des Moines office.

Nationwide, nearly 400 flights scheduled to travel through the U.S. on Tuesday were canceled, according to FlightAware.com, which tracks delays and cancellations. Airports in Dallas had canceled the most flights among U.S. airports.

Region braces for severe weather during Mardi Gras

New Orleans Police Superintendent Anne Kirkpatrick ordered parade-goers to not bring umbrellas, tents or “anything that could fly in the wind and cause mayhem.”

Just outside New Orleans in neighboring Jefferson Parish, officials canceled planned Mardi Gras Day parades due to anticipated high winds and thunderstorms.

Mardi Gras floats “could become unstable” and heavy winds could “blow down trees and power lines,” the National Weather Service warned, adding gusts of up to 60 mph (97 kph) were expected Tuesday afternoon.

In Pointe Coupee Parish, near Louisiana’s capital city of Baton Rouge, the incoming weather forced drastic changes to one of the oldest Mardi Gras celebrations in the state. The parade there was scheduled to roll without any bands, marching teams or dance groups — a staple of Carnival Season parades.

Officials also moved up the start time and urged residents to immediately remove all tents and trash afterward “due to the dangers they can present during weather.”

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Martin reported from Atlanta. Associated Press writers Sean Murphy in Oklahoma City; Sara Cline in Baton Rouge, Louisiana; Juan Lozano in Houston; Julio Cortez in Irving, Texas; Haya Panjwani in Washington, D.C.; and Susan Montoya Bryan in Albuquerque, New Mexico, contributed.

Students arriving for classes walk past damage from the roof that was sheered off by high by winds at Plano West High School Tuesday, March 4, 2025, in Plano, Texas. (AP Photo/LM Otero)

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Louisiana festival queens from across the state ride in a float during the Krewe of Bacchus parade in New Orleans, Sunday, March 2, 2025. (Chris Granger/The Times-Picayune/The New Orleans Advocate via AP)

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Storm debris sits in front of Plano West High School Tuesday, March 4, 2025, in Plano, Texas. (AP Photo/LM Otero)

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Damage from the roof that was sheered off by high by winds sits in front of Plano West High School Tuesday, March 4, 2025, in Plano, Texas. (AP Photo/LM Otero)

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A downed power line rests on the road near an apartment building following an early morning storm that hit the Dallas region Tuesday, March 4, 2025, in Irving, Texas. (AP Photo/Julio Cortez)

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A downed power line rests on the road near an apartment building damaged during early morning storm that hit the Dallas region Tuesday, March 4, 2025, in Irving, Texas. (AP Photo/Julio Cortez)

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A downed power line rests on the road near an apartment building damaged during early morning storm that hit the Dallas region Tuesday, March 4, 2025, in Irving, Texas. (AP Photo/Julio Cortez)

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The Krewe of Bacchus rolls through the streets of New Orleans, Sunday, March 2, 2025. (Chris Granger/The Times-Picayune/The New Orleans Advocate via AP)

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"Louisiana Fairs and Festivals" is the theme as the Krewe of Bacchus rolls through the streets of New Orleans, Sunday, March 2, 2025. (Chris Granger/The Times-Picayune/The New Orleans Advocate via AP)

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The Krewe of Bacchus rolls through the streets of New Orleans, Sunday, March 2, 2025. (Chris Granger/The Times-Picayune/The New Orleans Advocate via AP)

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