Tropical Storm Franklin

‘Extremely Active’ Hurricane Season Is Forecast as Peak Lies Ahead

So far, the 2017 Atlantic hurricane season hasn’t been much to write home about. While there have been more storms than usual, they’ve all been pretty dinky and short-lived. But forecasters expect that to change in the coming weeks as the peak of the hurricane season arrives. Favorable water temperatures and winds mean there’s “the possibility now

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washington wildfire

Large Wildfires Are Increasing. This Is What We Know About Wildfire Severity

With fire season starting to ramp up, we are again reminded of a clear trend that has emerged in the western U.S. in recent decades. We are experiencing larger and more frequent wildfires. The metric most frequently used to quantify this trend is area burned, or how large in terms of acres or hectares a given fire’s scorching fingertips managed

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More Downpours in the U.S.

Harvey and Irma have brought devastating floods to Texas and Florida, while severe to exceptional drought has contributed to wildfires in Montana and the Pacific Northwest. These types of weather and climate extremes are trending upward, as indicated by the NCEI Climate Extremes Index. In addition to accounting for drought and hurricane winds, the

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Climate Extremes Index

Harvey and Irma have brought devastating floods to Texas and Florida, while severe to exceptional drought has contributed to wildfires in Montana and the Pacific Northwest. These types of weather and climate extremes are trending upward, as indicated by the NCEI Climate Extremes Index. In addition to accounting for drought and hurricane winds, the

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Hurricanes and Climate Change: What We Know

Climate change intersects with hurricanes by increasing storm rainfall, intensity, and surge. A warming atmosphere causes more evaporation, meaning more water is available for precipitation. For every 1°F increase in temperature, the atmosphere can hold around 4 percent more water vapor, which leads to heavier rain and increases the risk of

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Climate Indicators

Learn more about the 10 key indicators of a warming climate

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Arctic Sea Ice

Ice has both ecological and economic benefits and its extent could influence weather around the world.

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El Niño

El Niño is a warming of waters in the equatorial Pacific that influences global weather patterns.

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Ocean Acidification

Acidifying oceans can hurt coral reefs and shellfish as well as the people that rely on them for their livelihoods.

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Carbon Dioxide

CO2 is a potent greenhouse gas and plays a vital role in regulating Earth's surface temperature through radiative forcing and the greenhouse effect

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Extreme Heat

Increasing frequency and magnitude of extreme heat can affect health, power usage and more.

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Snow Cover

A shorter snow season increases the amount of sunlight absorbed by the Earth’s surface and can further warm the planet.

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Sea Level Rise

Sea level rise could force millions to leave coastal areas and cost the world trillions of dollars.

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Land Ice

Melting land ice contributes to sea level rise.

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U.S. Wildfires

Wildfires damage forests and release CO2.

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Global Temperature

The global temperature is the clearest measure of how human greenhouse gas emissions are affecting our planet.

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