Here’s Where Winters Are Warming the Most

Winters are warming across the U.S., and in some locations, the warming is dramatic. The Northern Plains, Great Lakes, and the Northeast are warming the fastest, while warming is taking place at a slower rate in the western U.S. In parts of Minnesota, Wisconsin, and northern New England winters have warmed at an average rate of more than 1°F per

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Daily Record Highs are Dramatically Outpacing Daily Record Lows

Daily record highs are vastly outpacing daily record lows in the U.S. We will always have warm years and cold years, but in a world without global warming, those warm and cold years would balance over time. However, that’s not what we are seeing. According to the 2017 U.S. Climate Science Special Report, after a rigorous reanalysis of GHCN stations

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Will You Have a White Christmas?

White Christmas is defined here as having at least an inch of snow on the ground on Christmas Day. In addition, the analysis includes the record highest snow depth in each city on Christmas Day. But as the world warms, the overall area of North America covered by snow is decreasing. One reason is because an increasing percentage of winter

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Less Lake Ice, More Potential Lake Effect Snow

Arctic air begins to race across the relatively milder water of the Great Lakes every fall, generating lake effect snow. These snowfalls can be intense, but are often localized. Several inches of snow can fall a few miles away from a place that only gets flurries. As the planet has warmed from the increase in greenhouse gases, so have the lakes, me

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white christmas in presque isle

Will You Have a White Christmas?

White Christmas is defined here as having at least an inch of snow on the ground on Christmas Day. In addition, the analysis includes the record highest snow depth in each city on Christmas Day. But as the world warms, the overall area of North America covered by snow is decreasing. One reason is because an increasing percentage of winter

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snow cover

North American Snow Cover on the Decline

As the world warms, the overall area of North America covered by snow is decreasing. One reason is because an increasing percentage of winter precipitation is falling as rain instead of snow in many locations. A Climate Central report found that between sea level and 5,000 feet in elevation across the Western U.S., a smaller percentage of winter

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record temperatures

Daily Record Highs are Dramatically Outpacing Daily Record Lows

Daily record highs are vastly outpacing daily record lows in the U.S. We will always have warm years and cold years, but in a world without global warming, those warm and cold years would balance over time. However, that’s not what we are seeing. According to the 2017 U.S. Climate Science Special Report, after a rigorous reanalysis of GHCN stations

more
warming winters

Here’s Where Winters Are Warming the Most

Winters are warming across the U.S., and in some locations, the warming is dramatic. The Northern Plains, Great Lakes, and the Northeast are warming the fastest, while warming is taking place at a slower rate in the western U.S. In parts of Minnesota, Wisconsin, and northern New England winters have warmed at an average rate of more than 1°F per

more
warming winters

See How Much Winters Have Been Warming in Your City

Winter is the fastest warming season in most of the country generally from the Front Range of the Rockies to the East Coast. The greatest warming along the northern states emphasizes a general rule of climate change — cold areas and seasons warm faster than areas and seasons that are already warm. But there are a few exceptions. Fall is warming the

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lake effect snow

Less Lake Ice, More Potential Lake Effect Snow

Arctic air begins to race across the relatively milder water of the Great Lakes every fall, generating lake effect snow. These snowfalls can be intense, but are often localized. Several inches of snow can fall a few miles away from a place that only gets flurries. As the planet has warmed from the increase in greenhouse gases, so have the lakes, me

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lake effect snow

Lake Effect Snow Season is Shifting and Contracting

Lake effect snow will still occur in a warming world, but by the late 21st century, we can expect a shortened lake effect snow season. Rather than peaking in fall and early winter, heavy lake effect snow would be pushed back later in the season, generally from January through March.

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wildfires and health

Here’s How Wildfire Pollution Harms Health

Large wildfires are becoming more frequent and widespread in the western U.S. Smoke from these fires is undermining decades of progress in reducing air pollution from tailpipes, power plants, and other industrial sources in many areas. Large fires are becoming more common and severe, and the smoke from these fires has serious public health impact

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coastal flooding risk

Coastal Cities at Risk

Five years ago this month, Sandy made landfall in New Jersey as it transitioned to a non-tropical storm. The catastrophic flooding that followed resulted in an estimated $50+ billion in damage. On the storm’s fifth anniversary, we analyze the 50 largest U.S. populations at risk from coastal flooding from Atlantic basin storms.

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longer growing season

More Frost-Free Days Means a Longer Growing Season

The growing season is now nearly two weeks longer on average across the U.S. compared to the beginning of the 20th century. While this may delight warm-weather lovers, warmer overnight temperatures can reduce productivity and quality of grains and fruits, which might increase their costs at the supermarket. Warmer average temperatures lead to an in

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first freeze

The First Frost is Coming Later

Coming off of a warm September, warmer falls are becoming a trend across the U.S., with the first freeze (temperature below 32°F) of the season arriving later than before. This trend is not limited to one area of the country. The first freeze is coming a full month (31 days) later in Boise, Idaho, 27 days later in Las Vegas, Nevada, and 24 days lat

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More Warm Fall Days Across the U.S.

As the calendar turns to October, many people are excited to bring out their cool weather clothes. While parts of the western U.S. have already cooled enough to see snow, much of the U.S. will continue to be warmer than normal leading into this weekend. Here, we look at how the fall warming trend breaks down to individual warm fall days in cities a

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