Beast from the east
With all these wather warnings this week we are expecting the Beast from the east a cold air mass coing over UK and Ireland called a Sudden Stratospheric Warming (SSW). This refers to a rapid jump in temperatures in the stratosphere (up to approximately 50 degrees Celsius in a couple of days), which can then lead to the onset of cold weather in winter for the mid-latitudes (including Ireland amongst other countries).
The SSW is basically, a ‘wobbling’ of the jet stream can eventually alter weather patterns in the northern hemisphere by displacing a rotation of very cold air around the north pole called the tropospheric polar vortex.This, in turn, pushes the jet stream further south, leading to the development of a blocking high-pressure system at higher latitudes, which can remain in place for several days or even weeks. The last big freeze was in 2010 and it lasted for several weeks
It was 71 years ago this month when snow began to fall around Ireland, marking the start of an arctic siege that would last months.
So keep the home fires burning