More than 8 million are under a flood watch for parts of Ohio and Pennsylvania and more than 75 million are in the storm zone this weekend.

Temperatures are expected near or above 100 degrees from coast to coast.

According to AAA, storms can impact record-breaking Independence Day, as travelers are expected to set new records this year nationwide.

Severe storms ravaged the country from Montana to Florida on Thursday, with winds gusting to 91 mph in South Dakota.

At least one person was killed, and several others were injured when a powerful storm system passed through the Tri-State area.

Torrential rain has caused road closures, evacuation orders, and failure at some water treatment plants, according to officials.

ABC News’ Ginger Zee has the latest on the storms sweeping east, putting millions on alert.

Many Midwestern homeowners hit by bad flooding this week do not have flood insurance

Just as a record-breaking holiday travel week begins, 50 million people are under heat alerts in 16 states. A state of emergency has been declared in Philadelphia, with the heat index exceeding 100.

ABC News' Alexis Christoforous and Somara Theodore report on the busiest air-travel day of the year. Meanwhile, holiday weather threatens to wreak havoc on travel plans ahead of July Fourth.

ABC News' Dr. Alok Patel shares his safety tips for how to keep children cool while having a blast this summer.

The TSA is expecting Thursday to be the busiest air travel day of the year, but the FAA is warning there could be travel interruptions in the coming days due to weather.

ABC News’ chief meteorologist Ginger Zee has the latest on dangerous weather from the Midwest to the Northeast.

Over 70 million Americans in the Midwest to the Northeast are under threat. Historic flooding is causing a slow-motion disaster in the Northern Plains. At least 24 states are under heat alerts.

In April 2023, the National Inventory of Dams gave Rapidan Dam a "poor condition" rating with the hazard potential classification as "significant."

ABC News meteorologist Somara Theodore tracks the dangerous heat from coast to coast, as well as damaging winds hitting the Midwest.

ABC News chief meteorologist Ginger Zee has the latest on the floods and scorching temperatures.

President Joe Biden declared a major disaster in the state Monday night and approved federal aid to help recovery efforts.

Minnesota's Rapidam Dam is facing imminent failure, authorities said. Blue Earth River residents have been told to prepare for evacuation.

Sixty-five million Americans from coast to coast are under heat alerts as the life-threatening heat dome continues for the second week.

ABC News meteorologist Somara Theodore tracks the dangerously high temperatures across the U.S., along with the severe weather threats in the Midwest.

ABC News’ Ginger Zee shares the latest forecast and when temperatures may begin to drop.

Catastrophic flooding in Southern Minnesota has left entire communities under feet of water.

A heat dome has been scorching the country for seven days and counting, hitting cities coast-to-coast with blistering temperatures in the upper 90s and 100s.

ABC's Ike Ejiochi and Meteorologist Somara Theodore report on the heat wave affecting more than 100 million Americans across 27 states.

Dangerous rip currents are forecast to persist Sunday along much of the Atlantic and Gulf coasts, where at least eight people have drowned since Thursday, officials said.

An expanding heat dome Sunday had 100 million people across 27 states on alert for extremely high temperatures coast to coast, including America's two largest cities.

ABC News’ Martha Raddatz interviews Bill Nye the "Science Guy" on “This Week.”

ABC News’ meteorologist Somara Theodore reports on the extreme heat impacting the nation from coast to coast. Plus, the catastrophic flooding in the heartland.

An apparent tornado touched down on the south side of Janesville, Wisconsin, on Saturday evening, causing "considerable" damage to buildings and infrastructure.

Floodwaters have forced people out of their homes in parts of Iowa, the result of weeks of rain

More than 120 million Americans remain under heat alerts as record-breaking temperatures scorch the I-95 corridor.

In New York City, the heat index could reach 103 degrees this weekend.

Three people are missing after massive thunderstorms and rainfall in southeastern Switzerland caused a landslide

ABC News medical correspondent Dr. Darien Sutton has advice for staying safe from the heat this weekend.

Meteorologist Greg Dutra from ABC station WLS in Chicago breaks down the forecast from New York.

Record-breaking heat dome to smother South and Mid-Atlantic.

Heavy rain and flash flood warnings have prompted mandatory evacuations in New Mexico's city of Las Vegas

More than 110 million Americans from the northeast to California expect record-breaking temperatures through the weekend. Some major cities could see temperatures reach well above 90 degrees.

About 126 million Americans are bracing for an intense heat wave sweeping across the nation. ABC News’ Philadelphia affiliate W-PVI's Trish Hartman joins the show with the latest news.

The Grammy-nominated singer's debut performance at Fenway Park was delayed by two hours due to weather conditions.

Thirteen states in the East from Massachusetts to Kentucky are on alert for more extreme heat before the dangerous temperatures head to the West.

A major power outage has hit the Western Balkans as the region swelters in an early heat wave that has sent temperatures soaring to up to 40 degrees Celsius, or 104 degrees Fahrenheit

The train company was forced to cancel or delay key routes in and out of Penn Station because of extreme heat.

ABC News’ Greg Dutra discusses the excessive heat warnings issued across the U.S.

Heat alerts are in effect for 16 states from Maine to Kentucky as the dangerous heat wave continues.

Millions are under heat alerts as the start of summer brings record-breaking temperatures from coast to coast.

Extreme and potentially life-threatening heat is scorching millions of Americans in the Northeast and Midwest. Travel on the nation's busiest rail corridor disrupted.

Tropical Storm Alberto, the first named storm of the 2024 Atlantic hurricane season, made landfall in Mexico after pummeling Texas with rain.

As dangerously high temperatures hit 14 states, experts say precautions should be taken to stay safe in the unrelenting heat wave.