The excessive heat spurred an increase in hospital visits because of heat-related illness, and the city was under a “red alert” — its first this year, and the 13th since China launched a heat alert system a decade ago.
“China has a three-tier early warning system for high temperatures: a yellow warning is issued when high temperatures above 35 degrees Celsius are predicted for three consecutive days, orange indicates a predicted high temperature of 37 degrees Celsius in the next 24 hours, and a red alert is issued when the temperature is forecast to reach 40 degrees Celsius within 24 hours,” explained Xinhua.net, the Chinese news agency.
Much of eastern China was under the influence of a large ridge of high pressure — or heat dome. This heat dome may hold in place for the next week, meaning many more days of scorching temperatures.
This record high temperature in Shanghai is one of several all-time heat records set this summer around the Northern Hemisphere:
- Last week, Spain posted its highest temperature ever recorded when Córdoba airport (in southern Spain) hit 116.4 degrees (46.9 Celsius).
- In late June, Ahvaz, Iran soared to 128.7 degrees Fahrenheit (53.7 Celsius) — that country’s all-time hottest temperature.
- In late May, the western Pakistani town of Turbat hit 128.3 degrees (53.5 Celsius), tying the all-time highest temperature in that country and the world record temperature for May, according to Weather Underground meteorologist Jeff Masters.
While these temperatures extremes have occurred, the Earth’s average temperature so far in 2017 ranks second highest in records dating back to 1880.