The Met Office has issued severe weather warnings for wind and rain across much of England and Wales.
The Met Office's chief forecaster Nick Grahame warned "very strong winds" are expected in the south and west, with gusts widely expected to be around 60-70mph and some over 80mph on exposed coasts.
A spell of persistent heavy rainfall is also likely to spread across northern parts Wales and England and the north Midlands during today.
"The public should be aware of the potential for surface water flooding," Mr Grahame added.
St. Jude was brewing over the Atlantic for days before hitting our shores, and she seems to be gathering strength.
Energy companies across the Anglia region are drafting in extra staff to deal with any power cuts caused by Monday's storm.
Met Office advice on what to do in severe windy conditions like those being forecast from the early hours of Monday.