He revealed he had hit traffic on the A40 shortly after finishing his show at 9.30am and that it had taken three hours alone just to reach Northolt just 11 miles away - a journey which normally takes 24 minutes and even in rush hour traffic no more than an hour.
He said: "It was bizarre, we didn't see a single drop of rain here in London all morning, then I got there and it was all underwater."
He also tweeted about the delay, revealing how he had dealt with the frustration by making a diversion to Hillingdon's Wonder Cafe, on the Uxbridge Road, where the Road Runner Fry Up had helped ease the pain.
When he finally made it home he tweeted again, saying: "4 hrs to get 32 miles - London to Berkshire. Mental Monday."
Chris also engaged in some banter with his travel colleague Louise Pepper who told him that the flash floods had hit 'a very narrow corridor' with places like Northolt and Yeading particularly badly affected.
Chris, who has speculated on air about Northolt and its location in the past (including wondering why the Polish War Memorial was there), added a question to his listeners to ask if it was acceptable to be using his i-Pad during the jam.
He defended his decision to browse online as the car was stationary with the engine switched off at the time, however Louise felt that when a driver is in a car, even one that isn't moving, they are still technically in charge of a vehicle and need to give attention to the road at all times.