I was in the middle of an exposure trying to get some interesting effects from the city glow against the clouds when it started to rain. Undetered, but in fear for my equipment i finished the exposure and packed up in a flash. Flash is and apt word as that is what can be seen as the comets in this image. The rear curtain flash shining of the raindrops.
From the raw image I brought up the exposure a bit saturated removed noise and then sharpened. Removed the flash from the foreground (very little was visible anyway) as it just didn't do anything for the image.