River Esk at Longtown
Flood warnings and alerts are in place across Cumbria and southern Scotland as the region braces itself for Storm Gareth.
Heavy rain overnight has left rivers including the Eden in Cumbria and the Nith in Dumfries and Galloway swollen.
Surface water is also causing problems, with motorists warned to take extra care
The Environment Agency said staff had been working through the night in Cumbria and Lancashire to monitor rain and river levels.
It said on Twitter: "We've been out throughout the night clearing grids & removing debris in #Cumbria & #Lancs to reduce flood risk during #stormgareth.
"Rain is falling on already wet catchments, therefore it's important that people do remain vigilant, be prepared & know your risk."
After the rain clears, the storm is expected to bring strong winds, with a chance of damage to buildings, power cuts and travel problems.
The Met Office has predicted the winds will hit Northern Ireland at about 3pm on Tuesday, with a yellow warning for all of England and Wales and some parts of Scotland from 9pm.
The warnings remain in force until Wednesday.
Met Office chief meteorologist Paul Gundersen said: "The strong north-westerly winds will also affect south-west Scotland late on Tuesday, spreading across much of England and Wales through Wednesday.
"Gusts of 50-55mph are likely inland and up to 65mph along western coasts. Winds will gradually ease during the afternoon."
Gusts could even reach 80mph along coasts in Northern Ireland, the Met Office said.
A yellow weather warning for rain is also in place in parts of northern England on Thursday and Friday.
The storm, caused by a deep area of low pressure, was named by Met Eireann, the Irish weather service, and is the third named storm this year after Storm Erik in February and Freya earlier this month.