How a ‘Heat Dome’ Forms—and Why This One Is So Perilous

How a ‘Heat Dome’ Forms—and Why This One Is So Perilous

A heat dome “is really just sort of a colloquial term for a persistent and/or strong high-pressure system that occurs during the warm season, with the end result being a lot of heat,” says climate scientist Daniel Swain of UCLA’s Institute of the Environment and Sustainability.

PG&E’s Power Shutoffs Can’t Save California From Wildfire Hell

PG&E’s Power Shutoffs Can’t Save California From Wildfire Hell

“If you imagine the atmosphere over your head as a sponge, you can’t wring it out anymore,” says Daniel Swain, a climate scientist at UCLA.At ground level, the warm air screaming through the mountains sucks away whatever moisture might be left in the vegetation—which is increasingly little as the climate warms in California and autumns grow increasingly dry .