Fire burns in Karbole, Sweden, on July 15, 2018. - Due to the dry weather, 80 wildfires burned in Sweden. (Photo by Mats ANDERSSON / TT News Agency / AFP) / Sweden OUT        (Photo credit should read MATS ANDERSSON/AFP/Getty Images)
MATS ANDERSSON/AFP/Getty Images
Fire burns in Karbole, Sweden, on July 15, 2018. - Due to the dry weather, 80 wildfires burned in Sweden. (Photo by Mats ANDERSSON / TT News Agency / AFP) / Sweden OUT (Photo credit should read MATS ANDERSSON/AFP/Getty Images)
Now playing
01:07
Wildfires and deadly heat waves around the world
title: M. C. Schidlowsky on Instagram: "Fire tornado destroyed our line. It threw burning logs across our guard for 45 minutes and pulled our hose 100 plus ft in the air before..." duration: 00:00:00 site: Instagram author: null published: Wed Dec 31 1969 19:00:00 GMT-0500 (Eastern Standard Time) intervention: no description: null
Mary Schidlowsky
title: M. C. Schidlowsky on Instagram: "Fire tornado destroyed our line. It threw burning logs across our guard for 45 minutes and pulled our hose 100 plus ft in the air before..." duration: 00:00:00 site: Instagram author: null published: Wed Dec 31 1969 19:00:00 GMT-0500 (Eastern Standard Time) intervention: no description: null
Now playing
00:41
See 'firenado' snatch firefighter's hose
A photojournalist walks amongst plastic debris blown by strong winds in the residential district of Heng Fa Chuen during Super Typhoon Mangkhut in Hong Kong on September 16, 2018. (Photo by Philip FONG / AFP)        (Photo credit should read PHILIP FONG/AFP/Getty Images)
Philip Fong/AFP/Getty Images
A photojournalist walks amongst plastic debris blown by strong winds in the residential district of Heng Fa Chuen during Super Typhoon Mangkhut in Hong Kong on September 16, 2018. (Photo by Philip FONG / AFP) (Photo credit should read PHILIP FONG/AFP/Getty Images)
Now playing
01:16
The planet's strongest storm, Typhoon Mangkhut, hits Asia
HIROSHIMA, JAPAN - JULY 15:  (CHINA OUT, SOUTH KOREA OUT) Self-Defense Force members continue searching operation on July 15, 2018 in Hiroshima, Japan. More than 100 people were treated for heatstroke as scorching summer heat baked western Japan prefectures hit by recent torrential deluges.  (Photo by The Asahi Shimbun via Getty Images)
The Asahi Shimbun via Getty Images
HIROSHIMA, JAPAN - JULY 15: (CHINA OUT, SOUTH KOREA OUT) Self-Defense Force members continue searching operation on July 15, 2018 in Hiroshima, Japan. More than 100 people were treated for heatstroke as scorching summer heat baked western Japan prefectures hit by recent torrential deluges. (Photo by The Asahi Shimbun via Getty Images)
Now playing
01:38
More than 200 dead as heavy rain pounds Japan
Date07/22/2018 08:36 Duration00:00:58 Edit No7104 Copyright(c) 2018 Thomson Reuters, unless otherwise identified. Full statement available at https://www.thomsonreuters.com/en/copyright.html RestrictionsBroadcasters: NO USE VIETNAM Digital: NO USE VIETNAM . For Reuters customers only. Source FormatHD AudioNATURAL WITH VIETNAMESE NARRATION LocationsYEN BAI/ LAO CAI/PHU THO, VIETNAM SourceVTV Revision2 TopicsDisaster/Accidents,Floods Source News FeedsCore News IDtag:reuters.com,2018:newsml_WD8PTXJ5X:2
REUTERS
Date07/22/2018 08:36 Duration00:00:58 Edit No7104 Copyright(c) 2018 Thomson Reuters, unless otherwise identified. Full statement available at https://www.thomsonreuters.com/en/copyright.html RestrictionsBroadcasters: NO USE VIETNAM Digital: NO USE VIETNAM . For Reuters customers only. Source FormatHD AudioNATURAL WITH VIETNAMESE NARRATION LocationsYEN BAI/ LAO CAI/PHU THO, VIETNAM SourceVTV Revision2 TopicsDisaster/Accidents,Floods Source News FeedsCore News IDtag:reuters.com,2018:newsml_WD8PTXJ5X:2
Now playing
02:49
Over 20 killed by flooding in Vietnam
Photos provided by Lakewood Church on Monday show a flooded building.

Televangelist pastor Joel Osteen's Lakewood Church took on water Monday, according to Lakewood spokesman Donald ILoff. The water have since receded, Iloff tells CNN and the church will be used as a shelter and donation center for Harvey victims. The church does have a flood wall in place but out of caution they will only allow several hundred people to stay on the 2nd floor of the church.
Lakewood Church
Photos provided by Lakewood Church on Monday show a flooded building. Televangelist pastor Joel Osteen's Lakewood Church took on water Monday, according to Lakewood spokesman Donald ILoff. The water have since receded, Iloff tells CNN and the church will be used as a shelter and donation center for Harvey victims. The church does have a flood wall in place but out of caution they will only allow several hundred people to stay on the 2nd floor of the church.
Now playing
01:43
Floods pose more health risks than you may think
CNN
Now playing
00:36
Irma has left Barbuda uninhabitable
Reuters/U PYINNYA LINKARA
Now playing
01:13
Floods cause devastation in Asia
china landslides typhoon megi orig_00002421.jpg
china landslides typhoon megi orig_00002421.jpg
Now playing
00:45
Landslide pummels town
Courtesy Anne and Chris Mackie
Now playing
01:13
Firenado turns into a giant water spout
KEYT
Now playing
01:57
Heatwave, winds fuel deadly fast-moving fires
This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province.   CHINA OUT     AFP PHOTO        (Photo credit should read STR/AFP/Getty Images)
STR/AFP/AFP/Getty Images
This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province. CHINA OUT AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
Now playing
01:14
What NOT to do in a heat wave
Heatwave in Asia
Reuters
Heatwave in Asia
Now playing
02:20
Scorching temperatures turn deadly in Asia
A man wipes the sweat from his face in the scorching heat at a business district in Tokyo, Monday, July 23, 2018. Searing hot temperatures are forecast for wide swaths of Japan and South Korea in a long-running heat wave. The mercury is expected to reach 39 degrees Celsius (102 degrees Fahrenheit) on Monday in the city of Nagoya in central Japan and reach 37 in Tokyo. Deaths have been reported almost every day. (AP Photo/Koji Sasahara)
Koji Sasahara/AP
A man wipes the sweat from his face in the scorching heat at a business district in Tokyo, Monday, July 23, 2018. Searing hot temperatures are forecast for wide swaths of Japan and South Korea in a long-running heat wave. The mercury is expected to reach 39 degrees Celsius (102 degrees Fahrenheit) on Monday in the city of Nagoya in central Japan and reach 37 in Tokyo. Deaths have been reported almost every day. (AP Photo/Koji Sasahara)
Now playing
01:19
Japan suffers record-breaking heat wave
Getty Images
Now playing
01:22
Record-breaking super typhoon

Story highlights

Summer has brought record heat waves this month on four continents

"The impacts of climate change are no longer subtle," one expert says

CNN —  

The summer of temperature extremes just keeps going, with record heat waves this month on all four continents that occupy the non-tropical Northern Hemisphere where it is now summer.

On Monday, Japan recorded a temperature never before reached on the island nation since reliable records began in the 1800s.

Kumagaya, a city only 40 miles from Tokyo, hit 41.1 degrees Celsius (106 degrees Fahrenheit) in the midst of a multiweek heat wave that has killed at least 44 people.

The extreme temperatures are also affecting other countries in East Asia: South and North Korea have set heat records with temperatures climbing near 40 C (104 F).

It is these types of heat waves that scientists have been warning would be a consequence of warming the planet through greenhouse gas emissions.

“The impacts of climate change are no longer subtle,” said Michael Mann, a climate scientist and director of the Earth System Science Center at Penn State University.

“We are seeing them play out in real time in the form of unprecedented heat waves, floods, droughts and wildfires. And we’ve seen them all this summer,” he said.

Temperatures soar in Europe and Arctic

Much of Europe has been baking under a massive high-pressure ridge that is allowing tropical heat to climb all the way to the Arctic and blocking cooling rainfalls from ending the stretch of hot weather.

Temperatures above 32 C extended to the northern reaches of Scandinavia, setting records in Sweden, Finland and Norway for stations above the Arctic Circle.

The result has been a string of unprecedented wildfires in Sweden that have prompted the country to request assistance from other nations such as Italy, with more resources to fight wildfires.

The United Kingdom is off to its driest start to a summer, according to the Met Office, and it has been one of the hottest on record, coming in just 0.1 C behind the average temperature during the hottest summer on record in the UK, which averaged 21 C in 1976.

The heat wave is ongoing, with a “level three heat-health watch” issued for much of south and east England through this week as temperatures will climb in to the 30s Celsius through Friday.

Temperatures compared to normal, with red/orange showing temperatures well above average for much of the Northern Hemisphere.
ClimateReanalyzer.org/Clmiate Change Institute/University of Maine
Temperatures compared to normal, with red/orange showing temperatures well above average for much of the Northern Hemisphere.

In Northern Africa’s Sahara Desert, certainly no stranger to sweltering temperatures, a record high was recorded July 5 in Ouargla, Algeria. The mark of 51.3 C (124 F) is the highest temperature ever reliably recorded on the African continent, according to the World Meteorological Organization.

Numerous heat waves in North America

This month, a brutal heat wave also struck Canada, which saw temperatures peak in Montreal on July 2 with a record of 36.6 C (98 F). There were at least 70 heat-related deaths across the province of Quebec; CNN’s news partner CBC reported that the number of deaths overwhelmed Montreal’s morgue.

In the United States, July heat waves have stretched from the highly populated Northeast to the desert Southwest.

An exceptional stretch of heat in Dallas-Fort Worth has brought four consecutive days with record highs, hitting 108 or 109 F each day (42 to 43 C).

July has seen 41 heat records set across the United States – but zero record minimums.

This lopsided tally has become the norm, as climate change has tipped the scales so far in the direction of warmer temperatures.

This is climate change

“Cold and hot, wet and dry – we experience natural weather conditions all the time,” said Katharine Hayhoe, a climate scientist at Texas Tech University.

“But today, climate change is loading the dice against us, making certain types of extremes, such as heat waves and heavy rain events, much more frequent and more intense than they used to be,” Hayhoe said.

Remember the series of brutal nor’easter snowstorms that hit New England during a particularly cold stretch in late winter and early spring? The frequent bouts of snow and ice had many people wondering, “what happened to global warming?”

Well, here it is. And this is what it looks like. Although it will still get cold during the winter and there will be colder-than-normal spells from time to time, the heat will return, and summers are getting hotter.

2018 is the hottest La Niña year on record (the cooling of the ocean waters in the Pacific during La Niña tends to cool the planet), according to the World Meteorological Association, and with La Niña fading away and El Niño (which warms the Pacific Ocean) likely to take its place, things are only going to get hotter.