Six holidaymakers including four disabled people had to be rescued from a flooded caravan park in North Yorkshire.
A lifeboat crew from Filey was called to Cayton Bay Caravan Park at 13:30.
Up to 60 people have been moved to another part of the park not affected by flooding.
Forecasters have warned between 20 and 40mm of rain could fall in 24 hours and the Met Office has issued an amber warning for the region.
The holidaymakers, including one who was in a wheelchair, were in a static caravan trapped by 3ft (1m) of floodwater, the RNLI said.
Coxswain Barry Robson said: "They couldn't get out because the caravan was totally surrounded by floodwater. We had to wade in to get them."
About a quarter of the caravan park has been affected by floodwater and alternative accommodation has been provided to those who had to move out of their caravans, a spokesperson for the park said.
Elsewhere, events planned to mark the 800th anniversary of York's Royal Charter have been cancelled due to heavy rain.
A flotilla of boats was due to travel down the River Ouse on Saturday followed by a Dragon Boat charity event on Sunday.
The City of York Council said it expected river levels to continue to rise, making it too dangerous to allow the events to go ahead.
Sally Burns, director of community and neighbourhood services for the City of York Council, said: "We had 200 canoes, 400 boats and hundreds of spectators coming to York this weekend but it is just too dangerous to run the events."
Ms Burns said the council hoped to reschedule the flotilla and Dragon Boat race for later in the year.
Other events marking Charter Day will go ahead as planned, the council said.