The think about strobes for still cameras is that they expose for exactly 1/60 th of a second you expose exactly 1 frame of film.
I shot a test on black and white reversal and when I looked at the clip there really was just one exact frame exposed by the flash.
I believe the options are to use "lightning strikes" or paparazzi flashers that available light in NY has. You can program the length of the exposure and
I believe you can either have someone randomly fire it or program a sequence.
The other option, which doesn't seem like it would work for you is to buy some vintage flash bulbs on ebay and fire them with an old camera (or sveral old cameras).
Because they are "analogue" they expose (over expose?) several frames.