Torrential rain is now causing flooding in Todmorden and the situation is also not good in Hebden Bridge.
Reports are coming in that Rochdale Road and Halifax Road are both experiencing problems and residents and businesses are already battling to try and keep water out.
According to reports on the Calder Valley Community Support site, people travelling from Burnley to Todmorden were encountering serious problems with surface water.
Problems were also starting to develop around Rochdale Road.
Motorists are being urged not to drive through floodwater and add to problems residents and businesses are already facing.
There are reports of homes in Walsden already flooding.