Projections of annual counts of high-tide flooding (HTF) days for the NOAA Intermediate Sea Level Rise (SLR) scenario. The NOAA minor flooding threshold is used for Honolulu, San Diego and St. Petersburg. The NOAA moderate flooding threshold is used for Boston to highlight a threshold that is not yet routinely exceeded, which is not the case for the Boston minor threshold. The 50th percentile from the ensemble of projections (blue line) and the 10th–90th percentile range (blue shading, with the 90th percentile highlighted in orange) show increasing numbers of HTF days per year. The year of inflection (YOI, open black circle) for each projection corresponds to abrupt increases in the frequency of HTF days, which are highlighted by comparing the projected increases (Δ) over two adjacent ten-year periods (dashed and solid black lines). Graphic: Thompson, et al., 2021 / Nature Climate Change

Sunny-day flooding is about to become more than a nuisance – “What’s scary about this paper is the idea of the inflection point. Can we adapt fast enough to keep pace?”

By Jim Morrison 2 August 2021 (WIRED) – During the summer of 2017, the tide rose to historic heights again and again in Honolulu, higher than at any time in the 112 years that records had been kept. Philip Thompson, director of the Sea Level Center at the University of Hawaii, wanted to know why. […]

Smoke and flames from the Dixie fire are seen from Wolf Creek Road west of Greenville, California, 4 August 2021. Photo: InciWeb

Dixie Fire grows to second largest in California history – “We need to acknowledge, just straight up, these are climate-induced wildfires”

By Tim Stelloh 8 August 2021 (NBC News) – The Dixie Fire became the second largest wildfire in California history Sunday as thousands of residents remained under evacuation orders and more than 10,000 buildings stood in the blaze’s path. The fire, which began July 14 and leveled much of the historic Sierra Nevada town of Greenville […]

Cars and homes destroyed by the Dixie Fire line central Greenville on Thursday, 5 August 2021, in Plumas County, California. Photo: Noah Berger / AP Photo

Wildfire explodes to third-largest in California history – “We’re seeing truly frightening fire behavior. We really are in uncharted territory.”

By Daisy Nguyen and Noah Berger 6 August 2021 GREENVILLE, California (AP) – A Northern California wildfire that is now the third-largest in state history had burned for weeks, mostly in remote wildland areas with few people, before it roared through the little mountain community of Greenville, driven by shifting winds and bone-dry vegetation. Eva […]

Flames consume a home on Highway 89 as the Dixie Fire tears through the Greenville community of Plumas County, California, on Wednesday, 4 August 2021. “We lost Greenville tonight,” U.S. Rep. Doug LaMalfa, who represents the area. Photo: Noah Berger / AP Photo

Wildfire destroys California town – “We lost Greenville tonight” – 2021 fire season on track to be California’s worst ever

By Christopher Weber and Noah Berger 5 August 2021 GREENVILLE, California (AP) – A 3-week-old wildfire engulfed a tiny Northern California mountain town, leveling most of its historic downtown and leaving blocks of homes in ashes, while a new wind-whipped blaze destroyed homes as crews braced for another explosive run of flames Thursday amid dangerous […]

Farmer Fernando Enriquez Sr. looks at one of the stunted, blistered red sweet onions in Walla Walla, Washington on 28 July 2021, after the unprecedented heatwave of June 2021 destroyed his crops. Photo: Greg Lehman / Walla Walla Union Bulletin

Record 2021 heatwave cooked Walla Walla sweet onions to mush – “It’s unprecedented. It’s just never that hot at the beginning of June.”

By Emry Dinman 3 August 2021 (The Walla Walla Union-Bulletin) – In June 2021, as the sun baked the ground, harvest began at Enriquez Farms, a midsized operation in Walla Walla specializing in the region’s famous sweet onions. Up to that point, the alliums had thrived in the warm weather, and Fernando Enriquez Sr., the […]

A firefighter works on the Dixie Fire in California, 22 July 2021. Photo: InciWeb

Evacuations ordered after two California wildfires converge into one

By Maria Caspani 25 July 2021 (Reuters) – Crews and officials battling a large fire that has incinerated more than 190,000 acres (77,000 hectares) in northern California braced for the possibility on Sunday that smoke columns could spawn lightning storms capable of igniting more blazes. The swarming Dixie fire in Butte County, north of Sacramento, […]

Black carbon mass density over North America from GEOS-5, 21 July 2021. Smoke from wildfires in the U.S. West poured into the eastern U.S. on 20-21 July 2021. In New York City, levels of fine particulate pollution rose above 170 on the air quality index, a level considered harmful even for healthy people. Data: GEOS-5 data from the Global Modeling and Assimilation Office at NASA GSFC. Graphic: Joshua Stevens / NASA Earth Observatory

Skies turn hazy from Pittsburgh to Washington to Boston, as smoke from fires in Canada pour into the U.S. Northeast

By Adam Voiland 23 July 2021 (NASA) – While plumes of wildfire smoke from western North America have passed over the northeastern U.S. and Canada multiple times each summer in recent years, they often go unnoticed. That is because smoke that spreads far from its source typically moves at a fairly high altitude—between 5 and 10 kilometers—as […]

Forecast NWS NDFD Max temperatures (F) and departure from climatology (fill) in the United States, 25 July 2021 - 28 July 2021. Graphic: NOAA / NWS

Next 2021 heatwave to cover huge swath of U.S., bringing high temperatures to millions

By Jeanine Santucci 24 July 2021 (USA TODAY) – Most of the nation can expect above average temperatures in coming days as a giant heat wave is expected to spread across much of the continental U.S. beginning next week. The heat wave will bring temperatures that are at least 5 to 10 degrees higher than average to much of the country, according […]

Satellite view of the Great Salt Lake on 24 September 2011 and 9 July 2021. Photo: ESA / Sentinel 2 / NASA Worldview / LANDSAT 5

Great Salt Lake is shrinking fast – Scientists demand action before it becomes a toxic dustbin – “We’re on the doorstep of a catastrophe”

By Lucy Kafanov, Leslie Perrot, and Eliott C. McLaughlin 17 July 2021 Great Salt Lake, Utah (CNN) – Great Salt Lake is also known as America’s Dead Sea — owing to a likeness to its much smaller Middle Eastern counterpart — but scientists worry the moniker could soon take new meaning. Human water consumption and […]

Thousands of dead mussels are seen at the waterline in British Columbia, killed by the deadly heatwave 2021. More than one billion marine animals along Canada’s Pacific coast are likely to have died from the record heatwave, experts warn, highlighting the vulnerability of ecosystems unaccustomed to extreme temperatures. Photo: Christopher Harley / The Guardian

Heat dome probably killed 1 billion marine animals on Canada coast in 2021 – “A lot of species are not going to be able to keep up with the pace of change”

By Leyland Cecco 8 July 2021 TORONTO (The Guardian) – More than one billion marine animals along Canada’s Pacific coast are likely to have died from last week’s record heatwave, experts warn, highlighting the vulnerability of ecosystems unaccustomed to extreme temperatures. The “heat dome” that settled over western Canada and the north-western US for five days pushed temperatures […]

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