A historic heat wave has the Pacific Northwest caught in its grip. One of the few places that many believed would largely escape the worst of climate change has seen temperatures reach triple digits this past weekend. Portland, Oregon, hit 112 degrees Fahrenheit on Sunday, breaking the all-time high of 108 degrees Fahrenheit, which had been set just the day before. Seattle, for the first time since records started being kept in 1897, experienced two consecutive triple-digit days. Despite the Northwest’s reputation for moderate weather, it’s so hot that roads are buckling, even the interstate highways.

Other areas of the West face even worse conditions. “The Southwest is getting hammered by climate change harder than almost any other part of the country, apart from perhaps coastal cities,” points out Jonathan Overpeck, a climate scientist at the University of Michigan. “And as bad as it might seem today, this is about as good as it’s going to get if we don’t get global warming under control.”

According to a hair-raising report by the UN’s Intergovernmental Panel on Climate Change (IPCC), a draft of which was obtained recently by Agence France-Presse (AFP), the outlook is unrelievedly grim if we don’t change direction immediately. Pulling no punches, the report bluntly declares that “the worst is yet to come.”

Entire societies and ecosystems will begin to come apart under the stress. “Species extinction, more widespread disease, unlivable heat, ecosystem collapse, cities menaced by rising seas – these and other devastating climate impacts are accelerating and bound to become painfully obvious before a child born today turns 30,” according to the AFP account.

The 4000-page IPCC draft report, not scheduled for release until February 2022, constitutes the most comprehensive assessment so far of how climate change is disrupting our world. As have numerous other studies, the IPCC analysis makes clear that those least responsible for climate destabilization are suffering disproportionately. In particular, indigenous communities struggle to preserve their cultural practices, traditions, and livelihoods in the face of rapid global warming that they did little to set off.

Perhaps the most urgent point made in the IPCC report is that current levels of adaptation are not nearly sufficient to meet the moment. Even under an optimistic scenario of two degrees Celsius of warming by mid-century, the projections are startling. Billions of people will endure coastal destruction, drought, famine, wildfire, and extreme poverty.

The IPCC emphasizes that the foreboding picture it paints doesn’t relieve us of the obligation to do everything we can to keep the situation from completely unraveling. It notes that there are still significant steps we can take to mitigate the worst consequences of climate change. But, as the AFP dispatch puts it, “simply swapping a gas guzzler for a Tesla or planting billions of trees to offset business-as-usual isn’t going to cut it.”

“We need transformational change operating on processes and behaviours at all levels: individual, communities, business, institutions and governments,” insists the IPCC report. “We must redefine our way of life and consumption.”

The question, of course, is whether we can pull off this kind of sweeping makeover. What will it take to convince people and their governments that this is the only viable way forward? The answer remains to be seen but, like the ghost of Hamlet’s father, the question hangs over us, warning of a dire end if we fail to pay attention.

Pointing to past major climate shocks, the IPCC report observes that they upended the environment and wiped out the vast majority of species. “Life on Earth can recover from a drastic climate shift by evolving into new species and creating new ecosystems,” it cautions. “Humans cannot.”

P.S. It hit 116 Degrees Fahrenheit in Portland, OR yesterday. Three days, three records in a row. Oh, and it was another triple-digit day in Seattle. So that’s the first time that we know of that Seattle had three triple-digit days in a row.