Hell is coming: Potentially historic and deadly heat wave to roast Europe from Wednesday through Friday


An intense heat wave is set to bake Europe in coming days.

And it could be historic, potentially shattering records across a large portion of the continent.

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During this record-breaking heatwave in Europe, temperatures are likely to be 20 to 30 F or more above normal in the heat this week. Map via WeatherBell.com

After India, the European heatwave is expected to peak between Wednesday and Friday, when a swath from Spain to Poland is expected to see temperatures at least 20 to 30 °F (11 to 17 °C) above normal.

Actual temperatures should surge to at least 95 to 105 °F (35 to 40 °C) over a sprawling area. Some locations could be even hotter, especially within cities where a “heat island” effect from asphalt and concrete increases temperatures.

Mika Rantanen, a meteorologist in Finland, described computer model forecasts for the intensity of the heat “totally unheard of for June” in France.

Early summer heat waves can be especially lethal, as people have not yet had time to acclimatize to the higher temperatures. Older adults, the homeless and those without air conditioning are most susceptible to heat-related illnesses.

Heat waves are silent killers,” tweeted Stefan Rahmstorf, a climate scientist at Potsdam University. “The 2003 European heat wave has caused about 70,000 fatalities. Last year’s hot summer in Germany has been estimated to have caused at least 1,000 excess deaths.

The highest temperatures are likely to occur across western and central mainland Europe. Some of the hardest-hit in Spain and France are expected to see temperatures of at least 104 degrees (40 Celsius) for three straight days, Wednesday to Friday.

In a viral tweet, Silvia Laplana, a meteorologist in Spain, wrote “El infierno (Hell) is coming” The mercury is forecast to approach 105 degrees (40.6 Celsius) in Madrid on Friday, which would be its highest temperature ever recorded.

In Paris, temperatures may approach 100 degrees Wednesday through Friday. The combination of heat and humidity will make for challenging conditions at the Women’s World Cup when the United States takes on France, although the game is set for 9 p.m. local time, when the worst conditions will have eased.

Paris, along with more than half of France, is under an orange alert, the second-highest level on the country’s heat scale. The scale was instituted after the 2003 summer heat wave, which was blamed for 15,000 deaths.

French meteorologist Gillaume Woznica said that the latest forecast leaves little doubt that France will set a new national heat record around 113 degrees (45 Celsius) on Friday, passing the old mark of 111 degrees (44.1 Celsius), set in 2003.

Farther northeast, Berlin is predicted to flirt with the century mark Thursday, while Potsdam is forecast to break its all-time record by 3.6 degrees (2 Celsius). In Switzerland, Geneva is expected to be around 98.6 degrees (37 Celsius) Wednesday and Thursday.

Even Copenhagen on the main island of Denmark is set to head into the 80s.

In addition to France, a list of June national records that may be broken includes Austria (101.5), Germany (101.3) and Switzerland (99.1), as well as several others in the region. Some all-time records, mostly set in July or August, may also be threatened.

list of national temperature records that may be broken during the June 2019 early heatwave
list of national temperature records that may be broken during the June 2019 early heatwave. via Wunderground

In the United Kingdom and Ireland, temperatures are not forecast to be as intense as in the south, but some spots should see readings into the 80s, which is considerably above normal for the time of year. Farther east in southern Sweden, as well as neighboring Denmark, some spots could approach 90 degrees.

Cause of heatwave

Part of the cause for the massive early-season heat wave is a pair of powerful high-pressure systems. One is near Greenland, and the other is over north-central Europe. As they become linked and flex over coming days, they’ll also act to block a low-pressure system to their south, which would draw cooler air over Europe.

Together, the zones of high pressure, combined with the cooler low-pressure zone offshore, will steer a “Spanish plume” over mainland Europe and the United Kingdom. The hot air plume, sourced from deserts in Spain and the Sahara, will spill over France, Britain and Germany.

The result can be a lot of falling records, and severe thunderstorms at times.

Upper-level high pressure is forecast to be as strong or stronger than seen in recent history for a big chunk of Europe by Wednesday evening. (Tomer Burg)

In some areas, the resulting heat will be an intensified version of what they’ve been dealing with already, while in others it will come as more of a shock.

June has so far been dominated by warmth in eastern and central Europe, with cooler-than-normal conditions over western parts of the continent.

Germany is seeing a top-five warmest June, with Potsdam, in the northeast part of the country, on its way to its warmest June on record. But farther west, this onslaught of heat represents something of a pattern change.

So far this summer it’s often been cool and it’s often been raining,” the BBC noted.

This early heat wave is the latest in a number of historic episodes of heat in recent years. Just last summer, the continent saw relentless record temperatures coupled with unusually dry conditions. As a result, drought and wildfires were rampant.

The hottest summers since 1500 AD in Europe were: 2018, 2010, 2003, 2016, 2002,” tweetted Rahmstorf.

High temperature forecast for Europe on Wednesday. (WeatherBell.com)

The broader weather regime behind this heat wave has connections to the stagnant high-pressure zone responsible for the big Greenland melt event in mid-June. Both the Greenland melt and this heat wave are connected to a “blocking pattern” composed of big and lumbering high-pressure zones in the northern latitudes that can become stuck in place and lead to extreme weather.

Such patterns may be becoming more common in a warming world.

The anomalous heatwave should peak later this week (Thursday, Friday), but warmer-than-normal conditions seem likely to persist for longer in much of western and central Europe. So keep cool and be patient.

[Washington Post]

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