Europe heatwave by the numbers

Global warming since pre-industrial era: 1.4°C
Europe's warming since pre-industrial era: 2.4°C
Arctic warming since pre-industrial era: 3.2°C
Warming rate in Svalbard: 1.5°C–2°C per decade
French homes hit by heat-related power outage: 68,000
French schools affected by the heatwave: 8,000
Schools closed in France: 1,800
People drowned in France since June 18: 40
UK forecast peak temperature: Up to 40°C
French national temperature record: 29.8°C average day-night temperature on June 24, surpassing the previous record of 29.4°C
Italian cities under red alert: 16
Europe's warming compared with the global average: About 70% faster than the world as a whole
Current UK red heat warning: Only the second such warning ever issued by the Met Office.
The bottom line: This heatwave will eventually break, but the forces driving Europe's warming are long-term. Scientists warn that unless greenhouse-gas emissions are reduced globally, extreme heat events that were once rare could become a regular feature of European summers.

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