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July Was Record Hot for Parts of Alaska and the West

July Was Record Hot for Parts of Alaska and the West

The northernmost city in the United States just had its hottest July on record, as other spots in Alaska had their hottest month overall. Heat records also fell in a few western cities, as well as the fearsomely hot Death Valley, where July was the hottest month ever recorded on Earth. Those hotspots stood out in what was the 10th hottest July on … Read More

Global Warming Is Fueling Arizona’s Monstrous Monsoons

Global Warming Is Fueling Arizona’s Monstrous Monsoons

Summer in Arizona and throughout the Southwest is monsoon season, which means a daily pattern of afternoon thunderstorms, flash floods, dramatic dust clouds and spectacular displays of lightning over the desert. As the climate changes, Arizona’s monsoon rainfall is becoming more intense even as daily average rainfall in parts of the state has … Read More

The West Is on Fire As Heat Records Fall

The West Is on Fire As Heat Records Fall

From Phoenix to Boise, high temperature records fell like dominoes over the weekend as an impressive heat wave engulfed the western U.S., helping to fuel several wildfires. While heat waves are a regular part of summer weather, the steady warming of the planet means those heat waves are getting ever hotter, making record heat more and more likely… Read More

It’s So Hot in Phoenix, Planes Can’t Take Off

It’s So Hot in Phoenix, Planes Can’t Take Off

An intense heat wave is crippling the West this week, sending the mercury above 120°F in places like Phoenix. In a sign of just how hot things are getting, some airlines have had to cancel flights because of the heat. American Airlines said it cancelled 50 flights out of Phoenix Sky Harbor aboard Bombardier CRJ aircraft on Tuesday because the … Read More

Warmer Temperatures Drying the Rio Grande

Warmer Temperatures Drying the Rio Grande

The intensifying effects of warming temperatures on water shortages have been detected in remote northern New Mexico, where melting snowfall feeds one of the Southwest’s most important rivers. Researchers seeking to improve forecasts for how much water from the Rio Grande will be available for 5 million people each year found that rising … Read More

U.S. Drought at Lowest Level in Nearly Two Decades

U.S. Drought at Lowest Level in Nearly Two Decades

After years of intense, record-setting drought across the U.S., particularly in the Great Plains and California, the country is now experiencing its lowest level of drought in the 17 years since the U.S. Drought Monitor began its weekly updates. Less than 5 percent of the U.S. was in some stage of drought as of May 4, the most recent update… Read More

Supermoon Floods Warn of Crisis Facing Trump, U.S.

Supermoon Floods Warn of Crisis Facing Trump, U.S.

Donald Trump is preparing to lead America during a perilous period for the 130 million residents of its coastal counties. High tides linked to the full moon since the weekend caused minor flooding from Florida to New England, underscoring the need for improved coastal infrastructure at a time of faster rising seas. “We do see some pretty high tides… Read More

In Streak of Extreme Storms, What’s the Role of Warming?

In Streak of Extreme Storms, What’s the Role of Warming?

The staggering rains that swamped some 60,000 houses in southern Louisiana and shattered the previous state rain record are the latest — and perhaps most remarkable — in a string of jaw-dropping rain events across the U.S. over the past year. From South Carolina to Houston to West Virginia and Ellicott City, Md., each instance of extreme rainfall a… Read More

Gallery

A Hurricane Season With Supersized and Shrunken Storms The contrast between gigantic Hurricane Igor and tiny Hurricane Paula.

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