Karl The Fog: You’re Doing Amazing (at Keeping Us Cool), Sweetie
A microclimate flex brought to you by the SF Bay Area’s foremost marine layer
Europe is on fire. Record temperatures are being recorded across the United States. Southeast Asia continues observing some of the most searing forecasts ever recorded on earth; 120F highs hit New Dehli this month, which are capable of causing hyperthermia in as little as 10 minutes.
But here in San Francisco? Thanks to Karl The Fog’s ever-welcomed embrace over the city, our expected high today, July 21st, remains around 65F.
ABC7 meteorologist Drew Tuma — who remains the utmost cheeky source for San Francisco weather forecasting — pointed out the glaring difference between SF’s temps and others expected in the country today on Twitter. Tuma’s caption connected to a screenshot splaying forecasted high temperatures for major cities in the United States was simple, yet effective: “lol San Francisco.”
And laugh-out-loud, indeed. But this, too, is also a moment to reflect just how vulnerable our 49-square-mile city is to the climate crisis.
Since the 1950s, Todd Dawson, a professor of integrative biology at UC Berkeley who looked at historical fog records from coastal stations and airports, found a 33% reduction in fog frequency since the early 20th century. SF’s famous fog also returns to San Francisco in shorter intervals; the region’s fog lingers about three hours less per day than it did in the 1950s; “Fogseason,” which generally runs from June through August, has also become increasingly short, especially since the 2000s.