Europe News: A powerful weather pattern known as an \"omega block\" is helping sustain the intense heatwave sweeping across Western Europe, where temperatures have s.
It's not surprising that there will be a heat wave during the summer. But for the heat to settle over Europe this early is all the more unusual. The explanation is a so-called omega blockage, where warm air from the Sahara is "stuck". - It becomes a bit like a greenhouse almost, the sun shines in but the air is not replaced, says Magnus Joelsson, meteorologist at SMHI.