Hebden Bridge was hit flash floods for a second time in a month yesterday, with more rain forecast today.
Police told people not to venture into areas of Hebden Bridge, Calderdale, as heavy rainfall had made them "impassable" on Monday.
A West Yorkshire Police spokeswoman said:
Heavy rainfall on Monday afternoon has led to flooding in the area and has made Hebden Bridge impassable by car.
People are asked to avoid trying to drive into the area at this time because they risk becoming stranded in their vehicle. Also, they may force water into businesses and homes which are on the roadside.
The police spokeswoman said those living in Hebden Bridge were advised to stay indoors and go upstairs if possible and should not "venture out into the floodwaters".
The floods comes as residents continue to clear up from last month's floods, which affected more than 500 homes and businesses in Hebden Bridge, Todmorden and Mytholmroyd.
Calderdale Council said Hebden Bridge library had to be evacuated, a number of roads were cordoned off and sandbags were stacked in flooding blackspots.
A spokesman said: "A very heavy cloudburst above the hillside on Keighley Road has resulted in a large volume of surface water overwhelming drainage systems in Hebden Bridge.
Calderdale Council and the Environment Agency tweeted updates to the residents of the Hebden Bridge area to keep them updated. The Environment Agency warned residents to "act now":
If you're at risk of flash flooding in Todmoden, Hebden Bridge or Mytholmroyd you need to act now. Our sirens only respond to river flooding
Police advising emergency travel only in Hebden Bridge area. All roads open (except New Rd) and passable with extreme care.
Road closures due to flooding – Market Street Junction at Hebble End, Hebden Bridge and Keighley Road, Nutclough
Residents posted videos onto YouTube showing the relentless flood water surging through the town.
This amateur footage shows the full force of the floods taking over Hebden Bridge for the second time in two months. A man attempts to chase after what appears to be a metal bin, but decides against it after the flood waters are too strong.
'Calrec Audio' on Facebook described the scene at their workplace - Calrec Nutclough Mill. They attempted to stop the water coming into the Mill, but were unable to resist the force of the floods:
The waters came up very quickly and we weren't fast enough to stop it getting into the Mill. The water subsided after a couple of hours. At it's peak I counted 15 Calrec folk with their trousers rolled up diverting the water away.
Residents of the area were visited by Prince Charles just three days ago as he spoke with residents from Hebden Bridge about the clean-up operation following the first bout of flooding.
This evening police are advising only emergency travel in the area.
As heavy rains are forecast for the week ahead, the Environment Agency are sending out further flood and weather warnings.
At immediate risk are Dorset and parts of northern England where there is a significant risk of surface water and river flooding this evening and into tomorrow morning.
And the Midlands and East Anglia are expected to see a significant band of rain tomorrow, again increasing the risk of surface and river flooding.