Yesterday, owing to the unusual winds what blew away* the fog, I saw jumbo jets above S.F. in places where I normally don’t, but I couldn’t really hear them. (I guess jets have gotten a lot quieter these days.)
Like this low-flying United Air 747-400 near the Ferry Building – you could hardly hear it:
Click to expand
*I suppose – cf. yesterday’s Blue Sky Red Bridge from Burrito Justice
