The Met Office has issued an amber weather warning for wind and a yellow warning for rain, with Bath set to be battered with gusts of up to 80mph and heavy showers when Storm Imogen arrives in the South West later today.
An area of very strong winds is expected to extend east across southwest England and parts of central southern England on Monday morning.
Gusts of 60-70 mph are likely widely, with 80 mph gusts also possible through the Bristol Channel.
Winds should gradually ease through the afternoon and evening.
The Met Office are warning the public be prepared for disruption to travel as well as possible damage to trees and structures, and interruption of power supplies.
The Met Office’s Chief Forecaster said: “An area of low pressure is expected to move eastwards across the UK on Monday with a swathe of very strong winds around its southern flank, which will affect parts of southern Britain.
“The winds are likely to be very gusty at times, particularly in association with heavy showers running across these areas.”
In addition to the wind, rain will move quickly eastwards on Sunday afternoon and evening, followed by frequent showers overnight and through Monday.
The showers are likely to be heavy at times and accompanied by hail and thunder, with very strong and gusty winds. Be aware of the potential for localised surface water flooding.
The Met Office’s Chief Forecaster continued: “A deep area of low pressure will sweep a band of frontal rain quickly eastwards later on Sunday.
“Following this, a very unstable westerly flow will bring frequent heavy showers on Sunday night and through much of Monday.
“Over a 24 hour period, rainfall accumulations of 15 to 25 mm are likely quite widely, with over 40 mm across the high ground of Wales and the moors of southwest England.
“Given saturated conditions due to recent rainfall, there is potential for some surface water flooding, which will combine with very strong winds to lead to difficult driving conditions.”
Avon and Somerset Police have warned local residents not to take risks during the bad weather, and to avoid driving through any flooded roads.
Chief Inspector Kevan Rowlands said: “Flooded roads can be extremely dangerous. Even those with shallow flooding or surface water can cause a vehicle to lose control.
“Under no circumstances would we advise people to drive through flooded roads and instead we’d suggest they find alternative routes.”