Why was the winter so stormy?

What caused the past winter of 2013-14 to become so frequently stormy in Ireland and Britain?

Of course, you’ll hear that the reason is that the jet stream became very strong and fixed in one general location running from north of Bermuda and the Azores towards Ireland and then on into south-central Scandinavia. This is quite true but it just shifts what we are trying to explain from the stormy winter to the jet stream’s location. Continue reading