Witness here the awesome visual impact of the Natsu Hanabi over the Sumida Kawa.
The shaking is present because the Tokyo Sky Tree was about to blast off into space.
Witness the awesome auditory impact of the event at Elisa's blog.
The river beds were absolutely crammed with spectators laying on blankets and tarps. I didn't see very many tourists. The weather was at it's hottest and clammiest, but we had a nice supply of semi-cold non-alcoholic flavored beers and something that was supposed to be okonomiyaki, but more closely resembled a pizza with teriyaki sauce.