By Geoff Bansen

PHILADELPHIA (CBS) — Clouds have begun to creep into the region, a sign of things to come over the next 48 hours. There’s a decent amount of sunshine outside this morning, but those clouds will slowly overtake more and more sky throughout the day, before finally blocking out any blue spots by sundown. All of the tropical moisture from what once was major Hurricane Patricia is steadily creeping closer to the Delaware Valley, and will arrive overnight into Wednesday morning.

Heavy rain has already fallen in parts of the south, with numerous cities recording record rainfall amounts. A general 1-2″ of rain is expected to fall in and around Philadelphia, with higher amounts to the north and west. While there will likely be some poor drainage flooding, we do not expect any flooding on the rivers. The bigger concern will be the wind, where gusts on Wednesday could exceed 35 mph. And don’t be surprised if you hear a rumble of thunder as this storm pushes through. Showers will linger into Thursday morning before gradual clearing takes place. It will stay breezy, but temperatures will be mild – around 70 degrees. Sunshine returns on Friday and lasts through Halloween, but it will be much cooler with highs only in the upper 50s.