BRUSSELS, June 23 - The intense heatwave engulfing Western Europe, resulting in more than 40 deaths in France alone, is being sustained by a weather pattern known as an omega block. Read more at straitstimes.com. Read more at straitstimes.com.

BRUSSELS, June 23 - The intense heatwave engulfing Western Europe, resulting in more than 40 deaths in France alone, is being sustained by a weather pattern known as an omega block. Read more at straitstimes.com. Read more at straitstimes.com.

A powerful heatwave is sweeping across Europe, pushing temperatures above 40°C in several countries. Here's what's causing the extreme heat and which nations are worst affected.