By Kate AbnettBRUSSELS, July 31 (Reuters) - Human-caused climate change made the extreme weather fuelling wildfires in southwestern France twice as likely, and made the conditions ‌driving blazes in central Spain 20 times more likely, scientists said on Friday. Ongoing ‌wildfires in Spain and France have forced hundreds of thousands of people to evacuate and scorched huge swathes of ​land. The World Weather Attribution group of scientists used historical weather observations to assess how "fire-prone" hot, dry and windy conditions, which indicate how difficult it is to suppress a fire once it starts, have changed over time. In today's climate, extreme fires of this intensity are likely to occur ⁠once every 20 years in southwestern France, and once every six years in central Spain, the analysis said. Recent scientific studies have confirmed human-caused climate ​change has made Europe's hot and dry conditions in recent months more ​likely.