Yesterday’s torrential rains were capped of by something we don’t often get in D.C.: fog, and lots of it. The fog has subsisted into this morning, with the National Weather Service issuing a Dense Fog Advisory for the region through 10 a.m.

Last night’s fog—or, as one person quipped, “swampy mist”—provoked comparisons to San Francisco and London, while some said it made the city feel like it was living through scenes of The Exorcist, Sleepy Hollow or Silent Hill. (No one made the obvious connection to The Mist, sadly.)

The top of the Washington Monument disappeared from sight, drivers navigated more carefully (low-beams, people!) and an eerie yellow glow surrounded streetlights. The fog even forced Vice President Joe Biden’s plane to reroute, reports the Post:

Visibility was down to about a quarter-mile late Tuesday night at Dulles International Airport. At one point Tuesday night, it was less than 1,000 feet at Andrews Air Force Base, according to Weather Service reports.

Rain and fog forced a plane carrying Vice President Biden to land at Dulles instead of Andrews. The plane, coming from North Carolina, circled Andrews for 45 minutes before heading to Dulles, the Associated Press reported.

Some suburban schools have even opted to open 90 minutes late due to the fog, reports NBC4.