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News > United Kingdom

Countries in Northern Hemisphere Swelter in Severe Heat

  • A wildfire in Spain, July 2022.

    A wildfire in Spain, July 2022. | Photo: Twitter/ @ECOWARRIORSS

Published 18 July 2022

Heat, a silent killer, does not lead to dramatic before-and-after pictures like floods and earthquakes, but the baking weather harms crops, livestock and livelihoods.

A batch of countries in the Northern Hemisphere are bracing for a record hot summer, with blistering heat waves resulting in wildfires and hundreds of deaths.


Record High Temperatures Raise Alarms in Europe

On July 12, the World Meteorological Organization (WMO) spokeswoman Clare Nullis said that a new heatwave was building up in Western Europe, which was forecast to intensify and spread to other parts of Europe in the following weeks.


On Friday, the Met Office of the United Kingdom issued a red warning for extreme heat, the highest-level alert covering parts of England. Exceptional, perhaps record-breaking, temperatures are likely on Monday, then again on Tuesday. The highest temperature recorded in Britain so far was 38.7 degrees Celsius at Cambridge Botanic Garden in July 2019.

Spain has been sweltering under a heat wave. Wildfires, mainly caused by record-breaking temperatures, have so far burnt more than 22,000 hectares of woodland and scrub in Spain since the start of the heatwave over a week ago, emergency services said.

Wildfires have already destroyed roughly 30,000 hectares of land so far this year in Portugal, according to local broadcaster RTP. The scorching heat has also engulfed Japan, with the rainy season being the shortest in the Tokyo area since records became available in 1951.

For the first time in seven years, the Japanese government requested that businesses and households conserve electricity for three months to avoid a power crunch as temperatures have hit record highs.

Blazing temperatures also hit southwestern U.S. Phoenix, Las Vegas, Denver and California's Death Valley all reported record-breaking temperatures in mid-June. Phoenix experienced a temperature of 46 degrees Celsius, tying a record high not seen since 1918.


Heat, a silent killer, does not lead to dramatic before-and-after pictures like floods and earthquakes, but the baking weather harms crops, livestock and livelihoods. The heat wave in Portugal has already killed 659 people over the past week, local media reported. And around 360 people in Spain died from heat-related causes as of Saturday. 

Climate change is making heat waves more frequent and intense. Heatwaves are starting earlier and becoming more frequent and more severe because of record concentrations of heat-trapping greenhouse gases. 

"The record high temperatures we're expecting and experiencing are not surprising. Climate change is leading to changes in extreme temperatures, changes in the number of heat waves around the world," said Corinne Le Quere, professor of Climate Change Science at Britain's University of East Anglia, 

"What we are experiencing with the current heat wave is a pattern that will come more," warned the professor, noting the importance of learning to adapt and live under these conditions. Le Quere said temperature above 34 degrees Celsius "is dangerous for what we call workability," and "if the temperature goes above 40 degrees, then there's dangerous for survivability."

Workplaces could protect employees by letting them stay in the shade and put down the blinds to avoid intense sunlight. Climate change has broader impacts on agriculture and leads to other extreme weather events, such as wildfires, heavy rainfall and droughts.

"A hotter, drier climate is more conducive to extreme wildfires and places where there are forests. And we've seen that emerging in particularly northern latitudes, and also in some parts of Australia and Africa," she said, adding that measures should be adopted to make forests more resilient to change.

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