He said: “What has caused people to get a bit excited is the sudden stratospheric warming event, which is what caused the so-called Beast from the East in 2018.”
He added that the outcome is “uncertain”, and that such events do not always lead to long spells of cold weather.
Mr Claydon said: “That has happened but what that means is uncertain. In 2019 we had a sudden stratospheric warming event and saw record mild temperatures. It might be too far ahead to say at the moment.
“We know that sudden stratospheric warming event has happened. It can be two to three weeks or so to see any impact on the surface.”
However he added there is an “increasing likelihood of cold conditions”.