Yesterday, the Citizens of Bernalwood awoke to find a spooky mist hovering over Bernal Heights. It was unlike the thick soup of dampness that we often see during “summer” months, however, in that yesterday’s fog was more of a swirling vapor that looked bright and mysterious.

Fortunately, photographer Guillaume Lebleu brought his camera to the top of Bernal Hill to capture the wispy magic, and as you can see in the photos above, he nailed it.

Later that afternoon, however, the true nature of this odd meteorological phenomenon was revealed. Via Twitter, we learned that San Francisco’s favorite uninvited guest, Karl the Fog, had merely been expressing his affection for Bernal Heights in his own uniquely suffocating kind of way:

PHOTOS: Guillaume Lebleu