I guess that the lack of serious rainfall had left a lot of room for the rain to soak in rather than run off. There were some puddles on the trains and the ground had that nice saturated look that comes with wet and overcast skies.
Here are some shots from this morning, all with my 5D Mark III and EF 24-105mm f/4L lens. These are all bracketed HDR composites. Some were processed using three, four or all five of the bracketed files. I don't remember which ones were which.