Sudden Stratospheric Warming underway, mid/late January could see some serious winter weather across a large part of Europe

Two months ago, we talked about the polar vortex and its influence on the troposphere. Right now, the “Sudden Stratospheric Warming” – a large scale process – is underway and it might have important implications for the rest of the winter. As it can be seen in the graphic the stratosphere over the Arctic region is undergoing a strong warming event. The mid-stratosphere temperature over the pole is more than 65 °C warmer than in a normally strong polar vortex situation. This helps to weaken the polar vortex and can even cause it to break down into two or more smaller vortices. GFS temperature analysis of the mid-stratosphere at 10 mb. Graphic by Andrej Flis. We can see the vortex … Continue reading Sudden Stratospheric Warming underway, mid/late January could see some serious winter weather across a large part of Europe