A cloudy pre-dawn morning is an excellent time to create long exposures, especially when you can include a skyline, such as the Back Bay area of Boston, as part of the image. Streaking clouds with pastel colors always contrasts nicely with buildings.
What makes this image kinda interesting, is that someone unfamiliar with Boston would think that the snowy foreground area is simply a large field, when it’s in fact the frozen Charles River. Hopefully frozen for not too much longer, however, as I think we’ve all had enough of this winter by now.