Some areas may face storm surges and potential travel disruptions.

Extreme weather is causing power grids across the country to fail -- sometimes at massive scales -- putting residents at increased health risk.

Labor Day weekend is suspected to be the busiest on record, with the TSA expecting to screen more than 17 million passengers.

Nearly 30 million people are expected to fly Friday, but a storm system that's already hammered the parts of the Midwest could disrupt journeys as it pushes east.

ABC News’ Chief Meteorologist Ginger Zee is tracking the latest threats for the Labor Day weekend.

Officials say a tropical storm developing in the Arabian Sea has prompted authorities to shut schools in Karachi, Pakistan’s largest city

Soaring temperatures affected both players and fans but the heat couldn’t stop defending U.S. Open women’s champion Coco Gauff who defeated Germany’s Tatjana Maria.

ABC News Chief Meteorologist Ginger Zee is tracking the severe weather and when to expect relief from the extreme heat.

Life-threatening heat spread across the eastern half of the U.S. this week, first hitting the Midwest, then the Northeast and now the South.

A strong storm is lashing southern Japan with torrential rain and strong winds, causing at least three deaths as it crawls up the length of the archipelago and raising concerns of flooding, landslides and extensive damage

Crews for two of Michigan’s largest utilities are working to restore power to more than 300,000 homes and businesses and hundreds of schools amid hot, muggy conditions after severe storms toppled trees and limbs and snapped power poles

More than 50 million Americans sweltered in extreme late summer heat Wednesday, from New York to Philadelphia to Washington, D.C. Heat-fueled storms that hit the Midwest are expected to move east.

At least 55 million Americans are under heat alerts as the hottest weather of the season spreads across the eastern half of the U.S. with dozens of record highs broken or tied.

Chicago was under an excessive heat warning for the second day in a row, with the afternoon feeling like it was 115 degrees. The heat has also been fueling storms in Minnesota and Wisconsin.

Extreme heat is gripping the Midwest before moving into the Northeast.

Rodney Dial, the mayor of Ketchikan Gateway Borough, discusses the cleanup efforts taking place as the community braces for more rain.

More than 70 million Americans are under heat alerts as many students head back to school and some districts are ending classes early.

ABC News Chief Meteorologist Ginger Zee is tracking the heat that has 14 states on alert from Iowa to New York, including Chicago and New York City.

More than 60 million people are under heat alerts Monday, with Minneapolis, Madison and Omaha getting warnings as the heat index is expected to reach up to 115 degrees Monday and Tuesday.

A landslide cut a path down a steep, thickly forested hillside and crashed into several homes in Ketchikan, Alaska, killing a city public works employee who was cleaning stormwater drains

Three tropical cyclones are swirling over the Pacific Ocean, including a tropical storm that blasted Hawaii’s Big Island with heavy rain

After a wall of earth, rock and debris destroyed homes in picturesque Ketchikan, authorities are warning the public of potential further mudslides after torrential rainfall swamped the area.

Six Flags Mexico park guests were stuck dangling on a ride as a storm rolled through, temporarily halting service. They were stuck for 10 minutes before being safely let off the ride.

An urgent search is underway for an Arizona hiker who was swept away by flash flooding in the Grand Canyon.

Hawaii is on alert for Hurricane Hone, a weak Category 1 hurricane moving south of the state's Big Island.

Hawaii is on alert for Tropical Storm Hone while extreme heat is expected to expand from the south to the Midwest, leaving 25 million Americans under heat alerts.

An Associated Press review has found that thousands of people may be paying more for flood insurance or remain unaware of the dangers of dam failures because of conflicting federal policies

Dangerous temperatures are hitting states from Minnesota to Texas

Several all-time heat records have been broken in Texas as extreme heat blankets over much of the state, and the heat isn't slated to end any time soon.

ABC News' chief meteorologist Ginger Zee reports on the all-time record August heat impacting the Southern Plains.

ABC News’ Ginger Zee has the latest on Tropical Storm Gilma in the Pacific and the extreme heat in the Southwest.

A tropical depression is dumping heavy rain in southern South Korea and the populous Seoul region after weakening from a tropical storm

The governor of Connecticut declared a state of emergency in the wake of all the damage as at least two people have been killed in the flooding.

Connecticut Gov. Ned Lamont announced he had filed for a federal emergency declaration Monday after the weekend's storms brought a record 13 inches of rain.

Heavy rainfall and severe flooding in Connecticut left two people dead, and over 100 were evacuated as the governor declared a state of emergency.

Officials say flash floods triggered by the latest monsoon rains have swept through streets in southern Pakistan and blocked a key highway in the north

Flash floods swept across the Northeast, bringing more than a foot of rain in parts of Connecticut, and coastal flooding wreaked havoc on communities along the eastern seaboard.

ABC News’ Chief Meteorologist Ginger Zee tracks the latest forecast as dangerous weather remains possible Monday.

Ernesto has been upgraded to a Category 1 hurricane.

Severe weather and flash flooding are threatening millions from Georgia to Tennessee.

The entire East Coast from Florida to Maine is under a high risk for rip currents on Sunday as Ernesto churns in the Atlantic.

ABC News’ Morgan Norwood reports from Bermuda where more than 15,000 customers across the island are left without power.

Several New York City beaches will remain closed for the weekend due to strong rip currents from Hurricane Ernesto.

The hurricane's impact is also being felt up and down the East Coast with waves reaching eight feet. Officials warn of dangerous rip currents along the entire Eastern Seaboard.

Ernesto has become a Category 1 hurricane Wednesday after hitting Puerto Rico overnight and leaving power outages and flooding in its wake.

ABC News’ Chief Meteorologist Ginger Zee tracks the latest path and timing of Ernesto as it churns through the Caribbean.

Casa Pueblo executive director Arturo Massol discusses the impending storm, and the resiliency work his organization has done since Hurricane Maria devastated Puerto Rico in 2017.

Tropical Storm Ernesto is taking aim at Puerto Rico, where a tropical storm warning is in effect.

ABC News’ Ginger Zee has the latest track and timing of the tropical threat on the move.

ABC News' chief meteorologist Ginger Zee reports on the next tropical system before it reaches the Eastern and Northern Caribbean on Tuesday.