Winds of more than 80mph could leave a trail of destruction across large parts of the UK, knocking down trees and causing major structural damage and power cuts.
The storm, named after St Jude - the patron saint of lost causes whose feast day is on Monday - will develop over the Atlantic and is expected to hit the south-west late on Sunday, before moving north-east across England and southern Wales.
David Cameron said he had spoken to the organisations responsible for public safety during the storm. The prime minister wrote on Twitter: "I've just chaired a call with various government departments and agencies to hear about all the plans to ensure people are protected from tonight's storm."
The weather system is expected to have moved out over the North Sea by Monday lunchtime, leaving strong breezes in its wake.
With the Met Office predicting that 20-40mm of rain could fall within six to nine hours overnight, insurance companies are advising households to protect themselves and their property.
Comment: The headline and article from The Guardian sounds a little alarmist. If 20-40 mm of rain within a six to nine hour period is a cause for flooding and major upset, then it is more a sign of a failing infrastructure than of a severe storm.
Or comparison, in Japan the other day 850 mm of rain fell within 24 hours:
Japan's shocking, deadly deluge from Typhoon Wipha: 33 inches of rain in 24 hours
Comment: RT.com is now reporting that the earthquake's magnitude was recorded at 7.3