Construction crews work on a section of Highway 1 which collapsed into the Pacific Ocean near Big Sur, California on 31 January 2021. Heavy rains caused debris flows of trees, boulders, and mud that washed out a 150-foot section of the road. Photo: Josh Edelson / AFP / Getty Images

Floods after wildfires are washing California’s Pacific Coast Highway into the ocean – “It was great while it lasted”

By Joel Shannon and Doyle Rice 2 March 2021 (USA TODAY) – Soaring mountains on one side of the road and the Pacific Ocean on the other: It was 1956 and Gary Griggs was experiencing California State Route 1 for the first time. He was a child, but in the following decades he would drive […]

A western monarch butterfly balances on a flower in Vista, California. The number of western monarch butterflies wintering along the California coast has plummeted to a record low. Photo: Gregory Bull / AP

Fewer butterflies seen across the warming, drying landscapes of the American West – Increasing fall temperatures may be a significant driver of declining butterfly populations

By Mike Wolterbeek 4 March 2021 (Nevada Today) – New methods of conservation and management of butterfly habitat may be needed to stem the consistent annual decline in the numbers of butterflies over the past 40 years in the western United States, according to a new study published in the journal Science. “The widespread butterfly […]

Forest degradation in the Monarch Butterfly Biosphere Reserve core area, 2002-2020. The presence of the Monarch butterfly in the Mexican hibernation forests decreased by 26 percent last December, occupying 2.10 hectares (ha) compared to the 2.83 hectares reported during the same month in 2019. Meanwhile, the core forest area in the Monarch Butterfly Biosphere Reserve (MBBR) where the lepidopteran establishes the main hibernation colonies recorded, between March 2019 and March 2020, 20.26 ha of degradation, four times more than in 2018-2019 when 5 ha were degraded. Graphic: WWF

Eastern Monarch butterfly population declined by 26 percent in 2020 – Degradation of temperate forests in the Monarch Butterfly Biosphere Reserve was four times higher than in 2019

By Wendy Caldwell 25 February 2021 MEXICO CITY (Monarch Joint Venture) – The presence of the Monarch butterfly in the Mexican hibernation forests decreased by 26 percent last December, occupying 2.10 hectares (ha) compared to the 2.83 ha reported during the same month in 2019. Meanwhile, the core forest area in the Monarch Butterfly Biosphere […]

Observed sea-level rise in Rockport, Texas, 1969-2020 and projected to 2050. Rockport has the second-highest annual rise rate (7.1 mm/year in 2020), and the highest projected sea-level rise for 2050 at 0.82 meters (2.69 ft) above mean sea level in 1992. Graphic: VIMS

U.S. sea-level report cards: 2020 again trends toward acceleration – Water levels at 26 of 32 stations rose at higher rate than in 2019

By David Malmquist 24 January 2021 (VIMS) – Sea level “report cards” issued annually by researchers at William & Mary’s Virginia Institute of Marine Science add further evidence of an accelerating rate of sea-level rise during 2020 at nearly all tidal stations along the U.S. coastline. The team’s web-based report cards project sea level to […]

Icicles form on a ceiling fan in the hallway of an uptown Dallas apartment building during Winter Storm Uri, 15 February 2021. Photo: Thomas Black / Twitter

Texas faces “plumbing catastrophe,” food shortages after devastating storm – Millions of gallons leak from Austin water system – “It’s safe to say we’ve literally never seen anything like this”

By Suzanne Gamboa and Corky Siemaszko 25 February 2021 SAN ANTONIO (NBC News) – The number of Texans who were boiling their water to make it safe to drink plunged to 3 million Wednesday from 8 million the day before as platoons of plumbers and engineers worked around the clock to repair the countless homes […]

Map showing record cold temperatures across the United States on 16 February 2021 caused by winter Storm Uri, compared with the average temperatures over the 1979-2000 period. Temperatures were far colder than average and caused widespread power failures across Texas and other states. Data: National Weather Service / Global Forecast System / ClimateReanalyzer.org / Climate Change Institute / University of Maine. Graphic: The New York Times

How one Texas storm exposed an energy grid unprepared for climate change

By Josh Lederman 17 February 2021 WASHINGTON (NBC News) – A devastating winter storm that has plunged Texas into an electricity crisis offers warning signs for the U.S. as the Biden administration seeks to prepare for a future in which extreme weather is a greater risk and America is almost entirely powered by renewable energy. Generating energy is one challenge. But […]

Video clip showing a cloudburst and flooding, shown in Aon’s “Weather, Climate and Catastrophe Insight: 2020 Annual Report”. Video: Aon

2020 was costliest year on record for severe convective storms – U.S. hit by record-breaking 12 named storm landfalls – China saw most widespread Yangtze River floods since 1998

CHICAGO, 25 January 2021 (Aon) – Aon plc (NYSE: AON), a leading global professional services firm providing a broad range of risk, retirement, and health solutions, today launches its global Weather, Climate & Catastrophe Insight: 2020 Annual Report. The report evaluates the impact of global natural disaster events to identify trends, manage volatility and enhance resilience.   The report reveals […]

Infographic showing costs of natural disasters in 2020. Global losses from natural disasters in 2020 came to US$210 billion. The hurricane season in the North Atlantic was hyperactive, with a record-setting 30 storms, 13 of which reached hurricane status. Graphic: Munich Re

Global natural disaster figures for 2020 – “The hurricane season in the North Atlantic was hyperactive”

7 January 2021 (Munich Re) – Global losses from natural disasters in 2020 came to US$ 210bn, of which some US$ 82bn was insured. Both overall losses and insured losses were significantly higher than in the previous year (2019: US$ 166bn and US$ 57bn respectively).  The US share of losses was rather high: Natural disasters in the […]

Return rates for Cedar River Sockeye salmon, 2014-2020. In 2020, the number of returning salmon declined to a record low. Data: Washington Department of Fish and Wildlife. Graphic: Mark Nowlin / The Seattle Times

Lake Washington sockeye salmon hit record low – “In a generation, we have gone from times of plenty to these fish being on the brink of extinction”

By Lynda V. Mapes 1 January 2021 (The Seattle Times) – They are as Seattle as the Space Needle. But Lake Washington sockeye, once the largest run of sockeye in the Lower 48, are failing. The smallest run on record returned to the Cedar River in 2020, a bottoming out after years of declines. There […]

The Ozone Mapping and Profiler Suite (OMPS) and the Visible Infrared Imaging Radiometer Suite (VIIRS) on the NOAA-NASA Suomi NPP satellite captured this extremely think blanket of smoke along the West Coast on 9 September 2020. OMPS measured smoke clouds over the western U.S. with higher aerosol index values than anything Colin Seftor, an atmospheric scientist at NASA’s Goddard Space Flight Center, says he has ever seen with the instrument. Graphic: Joshua Stevens / NASA Earth Observatory

California’s wildfire smoke plumes are unlike anything previously seen – California fire carbon emissions in 2020 exceed previous record by nearly 2 times

By Matthew Cappucci 12 September 2020 (The Washington Post) – More than 3.1 million acres have burned in California this year, part of a record fire season that still has four months to go. A suffocating cloud of smoke has veiled the West Coast for days, extending more than a thousand miles above the Pacific. And the […]

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