Aurora Borealis 2024 May 11 2024. 13 may 2024 expert commentary. Northern lights or aurora borealis illuminate the night sky north of san francisco in middletown, california on may 11, 2024.

Federal forecasters from noaa’s space weather. The aurora borealis, also known as the northern lights, is visible over lake berryessa, calif., early saturday, may 11, 2024.