The Yellow Flash over San Francisco
On a clear night in November 1948 a science teacher studying the stars from his San Francisco back yard saw a yellow light flash across the sky, turn and vanish over the fog on the Golden Gate in about seven seconds. He called the Fourth Air Force, and the Office of Special Investigations checked his story and his eyesight. This is the record of what one man saw, not a verdict on what crossed the city.
◆ THE SHORT VERSION
- The Yellow Flash over San Francisco is a reported UAP case in San Francisco, California, United States, 29 November 1948, 21:13.
- A science teacher studying the stars through binoculars saw a yellow light flash across the San Francisco sky, turn and vanish over the fog on the Golden Gate in about seven seconds.
- He reported that it was too fast for a plane but did not look like a comet or a shooting star.
- Air Force investigators found no other witness and noted that he had not been wearing his glasses at the binoculars.
- The Air Weather Service found the light had flown straight into the wind, more than four hours after the scheduled balloon releases.
- For this case Fractured Realities holds 1 distinct source, 1 corroborating primary document and 1 claimant on its resolved list.
- The archive grades it L4 · OFFICIAL RECORD — a released government record names who saw it, the top of our scale, though no independent testimony sits beside that record.
Counts are resolved totals of what sources say, computed 2026-10-03; the reported details above are claims in the record, not findings. A record of reports, not a verdict on what happened.


