The worst storm for more than five years is expected to arrive in the UK tonight.
Winds of up to 80mph are forecast, along with very heavy rain.
The storm will develop over the Atlantic during the day and is expected to hit the South West late tonight, before moving north-eastwards across England and southern Wales.
The extreme conditions could lead to severe flooding, disruption to travel networks, and fallen trees and power lines.
Here is a round-up of all the latest on what is being called the 'St Jude storm', after the patron saint of lost causes, whose feast date is on Monday.
Two warnings have been issued by the Met Office.
An amber warning, meaning "be prepared", has been issued for the southern half of England and the southern half of Wales.
A yellow warning, meaning "be aware", applies to rest of Wales and England up to the border with Scotland.
The Environment Agency has warned of surface water flooding across most of England. Around 20-40mm of rain could fall within six to nine hours overnight..
A spokesman said: "We are supporting local authorities who will respond to any reports of surface water flooding. Seafronts, quaysides and jetties should be avoided due to the risk of overtopping by waves and wind-blown shingle."
The first strong winds are likely to hit south-west England on Sunday night, with gusts of 75-80mph. The storm is predicted to then move north-eastwards, with winds of 60-70mph in the Midlands and East Anglia. Northern England and North Wales could see winds of 50-60mph