Update: Cloudy and drizzly now, heavier rains tonight
After a brief bout of rain this morning, most of the area is currently in a dry-slot. Lots of dry air has filtered into the region thanks to a high pressure system to the north. And considering the storm is still well to the south of the area, there is not enough lift in the atmosphere at our latitude to consistently supply rain. This is why our forecast called for the heaviest rain to be tonight and tomorrow morning, rather than today.
The water vapor imagery shows dry air filtering into our storm system, but lots of cold cloud tops to the east that will eventually head our way.