The United States will probably experience the biggest effects from the weather pattern this winter.

The strongest heat dome on the planet will soon tower 3.7 miles above Tennessee, drawing extreme heat and humidity into the central United States from the Gulf of Mexico.

Elevated sea levels could contribute to damaging coastal flooding and beach erosion along the West Coast this year, particularly during powerful storms and the highest tides.

It’s been so calm across the Atlantic that a new record will probably soon be set.

New climate model predictions suggest that the ongoing El Niño will soon become stronger than any event recorded before — potentially by the end of September.

Even if California avoids the worst of this storm, it could signal a heightened risk of tropical threats in the weeks and months ahead.

Floods in the Grand Canyon were connected to a wider pattern of extra warmth, humidity and moisture flowing into the United States from record warm Pacific Ocean waters.

On Thursday, humidity in Southern California spiked higher than notoriously humid places such as Florida, Louisiana and Texas.

The summer of the heat dome continues.

Expected to become Tropical Storm Moke, the storm system could remain weaker than a hurricane but bring heavy rain to Hawaii's Big Island.

An outbreak of tropical storms is soon possible across the Pacific Ocean.

This weekend, the planet’s strongest heat dome will tower above the United States — and this time it will be centered in the South.

It will act like a climate time machine, temporarily pushing temperatures to levels that otherwise might not be felt for a decade or so.

A key zone of the Pacific Ocean is already at record warmth. See how rising sea temperatures could impact global weather. These forecasts will be updated regularly.

Extreme humidity is expected to linger into the weekend for 80 million people living in the United States.

It’s been an unusually humid summer for more than 215 million people across the United States — a pattern that’s part of a long-term trend.

Around 115 million people could be exposed to unhealthy air quality. See the forecast for 20 cities.

See where temperatures could reach a rare 110 degrees and amplify fire weather risks.

This forecast will be updated regularly.

A weather presenter’s prediction aimed to show the dangers of global warming. Temperatures exceeded it Wednesday as France was hotter than Phoenix.

The exceptional temperatures are tied to a phenomenon that allows persistent sunshine and hot sinking air to roast the landscape.

The summer solstice in the Northern Hemisphere occurs June 21, at 4:24 a.m. Eastern time.

The latest model forecasts have once again trended toward a more intense El Niño this year.

If the blob persists for years, it could eventually cool the climate around Greenland, Iceland and northern Europe.

Very unusual linear cloud formations took shape directly above Houston’s highways Tuesday morning, probably developing as the roads warmed faster than the adjacent land after sunrise.

The climatic phenomenon is expected to return this year, but a lot has changed since what might have been the worst environmental disaster in human history.

Around 110 million people — including in the East — can expect high temperatures in the 90s and increasingly muggy conditions through Wednesday, making it feel more like July than May.

It’s the third consecutive month that multiple models have predicted that a potentially record-breaking El Niño could drive global temperatures to new highs.

Stretching from Oregon to Florida and northward to the nation’s capital, the U.S. is facing drought conditions just shy of the most widespread this century.

An estimated 33.5 million children in the United States — or nearly half of people under 18 — live in an area that received a failing grade for at least one measure of air pollution.

An estimated 33.5 million children in the United States — or nearly half of people under 18 — live in an area that received a failing grade for at least one measure of air pollution.

It could boost temperatures, humidity and the threat for tropical storms in the West through summer.

It could boost temperatures, humidity and the threat for tropical storms in the West through summer.

Nearly 100 million people across the United States can expect freezing temperatures into next week, with a chance for snow flurries for some.

High temperature records are forecast to be neared, tied or broken in nearly 600 locations from the Plains to Northeast, worsening droughts in some spots

About 190 million Americans are experiencing an early start to spring, based on the behavior of lilac and honeysuckle, data shows.

About 190 million people across the U.S. are experiencing an early start to spring, based on the behavior of lilac and honeysuckle, data shows.

A new Washington Post investigation reveals where climate change has supercharged the movement of moisture through the skies.

An expansive marine heat wave in the North Pacific Ocean will contribute to late surges of summer-like temperatures across the United States and Canada.

Two tropical disturbances were swirling in the Atlantic on Friday. One of them could bring dangerous weather to the Southeast U.S. early next week.

See if your region just had one of its most humid summers on record and how humidity patterns are changing over time.