San Franciscans and tourists alike were treated to a 2010s bit of viral deja vu when a double rainbow was seen wrapping around the city.

Last week, San Francisco got its first glimpse of fall: a day-long rainstorm that traded blue skies for gray overcast. Daily totals from the National Weather Service showed about a month’s worth of rain fell on SF; areas susceptible to flash flooding did, indeed, see floods; good-doing San Franciscans came out in droves to clear and unclog vulnerable storm drains.

Among the more beguiling events to transpire from Monday’s rainstorm was a double rainbow crowning in San Francisco in between rain showers.

Social media was inundated with posts about the happenstance rainbow.

“SF, thanks for showing off this stunning rainbow the night before Dreamforce,” reads one post on X. Others on Thread and Instagram were quick also to post their snapshots and quips about the rainbow, many of whom managed to catch it when the rainbow doubled.

San Francisco is no stranger to light-refracting anomalies. Because of the area’s inherent marine layers, “fog bows,” almost circular rainbows formed inside low-lying mist, are captured with somewhat reliable frequency. When lightning does strike SF, it does so in mind-melting ways — gorgeous, angry skies, glowing through hazy heavens.

Clear skies with summer-like temperatures into the 70s are expected this week before another spat of wet weather is likely to fall on the Bay Area this weekend.

Feature Image: Courtesy of Threads via [at]pixelactiv.ist

Matt Charnock

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