USA, caldo record nella Death Valley: la temperatura ha raggiunto 54,4°C. FOTO

Se il dato sarà confermato si tratterebbe della temperatura più alta mai registrata da quando i metodi di rilevamento sono ritenuti più affidabili e si colloca nell'ambito di un'ondata di calore che ha investito la costa occidentale degli Stati Uniti. LA FOTOGALLERY

DEATH VALLEY NATIONAL PARK, CA - MAY 11: Death Valley National Park on May 11, 2015 in Death Valley National Park, California. (Photo by Brendon Thorne/Getty Images)

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La Death Valley, in California, si conferma uno dei punti più caldi del pianeta con i 54,4 gradi centigradi registrati dal servizio meteorologici statunitensi. Questa temperatura, se confermata, stabilirebbe un record, diventando la più alta di sempre

Antartide, temperatura record: mai così caldo

DEATH VALLEY NATIONAL PARK, CA - JUNE 30: Kevin Martin of Corona, California poses for a snapshot by an unofficial thermometer reading at Furnace Creek Visitor Center reading 128 degrees as a heat wave spreads across the American West on June 30, 2013 in Death Valley National Park, California. Weather forecasters predict that high temperatures could reach 130 degrees in Death Valley today and tomorrow, breaking the hottest-ever temperature for June of 128 degrees, set on June 29, 1994. It is also just four degrees shy of breaking the all-time world record of 134 degrees which occurred here 100 years ago on July 10, 2013. Since then, the 130-degree mark has never been repeated and the 129-degree mark has occurred on only four occasions. Formerly, it was thought that the world's highest temperature occurred in El Azizia, Libya in 1922 but an international team of climate experts from the World Meteorological Organization (WMO) declared that reading invalid because of the combination of poor weather instrumentation which was operated by an inexperienced record-keeper located in a bad spot for accurate readings. (Photo by David McNew/Getty Images)

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Il condizionale, però, è ancora d’obbligo perché il dato, registrato da un sistema automatico dell'American National Weather Service (Nws) in un sito chiamato "Furnace Creek", è ancora da verificare

Incendio in California a est di Los Angeles: 8mila evacuati. FOTO

MOJAVE, CA - JUNE 30: Red Rock Canyon State Park features scenic desert cliffs, buttes and spectacular rock formations as viewed on June 30, 2017, near Mojave, California. Located between Los Angeles and the Owens Valley, this unique desert setting provides dramatic vistas and has been a backdrop for hundreds of Hollywood motion pictures, television shows, advertisements, and music videos. (Photo by George Rose/Getty Images)

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L'Organizzazione meteorologica mondiale, organismo specializzato delle Nazioni Unite, ha annunciato su Twitter che verificherà la temperatura segnalata. "Sarebbe la più alta registrata ufficialmente nel mondo dal 1931", ha sottolineato

Death Valley, UNITED STATES: Sand dunes near the village of Stovepipe Wells is pictured 19 November 2006. Death Valley, the largest national park in the US, comprises more than 3.3 million acres of desert wilderness. Anthropologists estimate that roaming humans first settled in Death Valley roughly 10,000 years ago. Some 2,000 years ago, native peoples lived along the edge of a 30-foot-deep-lake. In 1849, a group of gold rush pionneers entered the Valley, thinking it was a shortcut to California. After barely surviving the trek across the aera they named the spot "Death Valley". In the 1880's native peoples were pushed out by mining companies who sought the riches of gold, silver, and borax. AFP PHOTO/GABRIEL BOUYS (Photo credit should read GABRIEL BOUYS/AFP via Getty Images)

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Situata nel deserto del Mojave, a ovest della città di Las Vegas, la Death Valley (Valle della Morte), come ha ricordato anche la BBC, detiene da oltre 100 anni il record per la temperatura più calda mai registrata sulla Terra: 56,7 gradi, nel luglio 1913

Death Valley, UNITED STATES: Zabriskie Point, one of the most popular lookouts in Death Valley, is pictured 19 November 2006. Death Valley, the largest national park in the US, comprises more than 3.3 million acres of desert wilderness. Anthropologists estimate that roaming humans first settled in Death Valley roughly 10,000 years ago. Some 2,000 years ago, native peoples lived along the edge of a 30-foot-deep-lake. In 1849, a group of gold rush pionneers entered the Valley, thinking it was a shortcut to California. After barely surviving the trek across the aera they named the spot "Death Valley". In the 1880's native peoples were pushed out by mining companies who sought the riches of gold, silver, and borax. AFP PHOTO/GABRIEL BOUYS (Photo credit should read GABRIEL BOUYS/AFP via Getty Images)

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Questo dato, però, è contestato. Alcuni esperti meteorologici moderni ritengono che le rilevazioni di quell’anno siano state errate, come molte altre temperature roventi registrate quell'estate

AMBOY, CALIFORNIA - SEPTEMBER 22: Bristol Lake, a dry lake bed, stands in the Mojave desert on September 22, 2019 in Amboy, California. California's Fourth Climate Change Assessment found that temperatures of the inland deserts of Southern California, including the Mojave desert, are expected to continue climbing. According to the report, average daily highsÂ could increase as much as 14 degrees this centuryÂ if greenhouse gas emissions keep rising. (Photo by Mario Tama/Getty Images)

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Secondo un'analisi del 2016 dello storico meteorologico Christopher Burt, infatti, le temperature registrate nella regione nel 1913 non corrisponderebbero a quelle fornite dalle statistiche della Death Valley

LUDLOW, CALIFORNIA - SEPTEMBER 22: The remnants of an old car remain in an abandoned section of town in the Mojave desert on September 22, 2019 in Ludlow, California. California's Fourth Climate Change Assessment found that temperatures of the inland deserts of Southern California, including the Mojave desert, are expected to continue climbing. According to the report, average daily highsÂ could increase as much as 14 degrees this centuryÂ if greenhouse gas emissions keep rising. (Photo by Mario Tama/Getty Images)

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Un'altra temperatura record per il pianeta, 55°C, è stata registrata in Tunisia nel 1931, ma Burt sostiene che questo dato, così come altri registrati in Africa durante l'era coloniale, ha "seri problemi di credibilità"

KELSO, CALIFORNIA - SEPTEMBER 21: The late afternoon sun illuminates a section of the Kelso Dunes in the Mojave National Preserve, located in the Mojave desert, on September 21, 2019 near Kelso, California. California's Fourth Climate Change Assessment found that temperatures of the inland deserts of Southern California, including the Mojave desert, are expected to continue climbing. According to the report, average daily highsÂ could increase as much as 14 degrees this centuryÂ if greenhouse gas emissions keep rising. (Photo by Mario Tama/Getty Images)

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Nel luglio del 2013 la zona era invece arrivata a sfiorare i 54 gradi arrivando a 53,9. Attualmente, negli Usa, è in corso un'ondata di caldo sulla costa occidentale, dove si prevede che le temperature possano aumentare ulteriormente anche questa settimana

374032 02: The world''s tallest thermometer stands behind a road sign, July 24, 2000 at the "Gateway to Death Valley" in Baker, CA. Standing 134 feet tall, the thermometer was built in 1991 to commemorate the record high temperature of 134 degrees recorded in Death Valley in 1913. During a recent July heatwave, the temperature averaged 118 degrees during the day and barely fell below 100 at night. "Lordy, it was so hot we almost ran clean out of water and sunscreen," said a cashier at the Baker Country Store. "Folks were taking that fancy Perrier water at three dollars a bottle and pouring on their heads just to stay cool." (Photo by Jason Kirk/Online USA)

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Le condizioni di caldo insostenibile hanno portato anche a due giorni di black-out in alcune aree di questa zona dopo il malfunzionamento di una centrale elettrica

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L'attuale ondata di caldo si estende dall'Arizona, nel sud-ovest, lungo la costa fino allo Stato di Washington nel nord-ovest. Le previsioni parlano di un picco di calore in arrivo

DEATH VALLEY NATIONAL PARK, CA - JUNE 30: People walk through an area of Death Valley known as the Devils Golf Course in 116-degree and rising temperatures as a heat wave spreads across the American West on June 30, 2013 in Death Valley National Park, California. Weather forecasters predict that high temperatures could reach 130 degrees in Death Valley today and tomorrow, breaking the hottest-ever temperature for June of 128 degrees, set on June 29, 1994. It is also just four degrees shy of breaking the all-time world record of 134 degrees which occurred here 100 years ago on July 10, 2013. Since then, the 130-degree mark has never been repeated and the 129-degree mark has occurred on only four occasions. Formerly, it was thought that the world's highest temperature occurred in El Azizia, Libya in 1922 but an international team of climate experts from the World Meteorological Organization (WMO) declared that reading invalid because of the combination of poor weather instrumentation which was operated by an inexperienced record-keeper located in a bad spot for accurate readings. (Photo by David McNew/Getty Images)

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Con l'aumento della temperatura, l'umidità è scesa a solo il 7%. La Death Valley si trova vicino al confine californiano con il Nevada ed è il luogo più arido e caldo degli Stati Uniti

LAKE HUGHES, CA - August 15: Fire fighters battle the Lake Fire wildfire August 15, 2020 near Lake Hughes, California. Threat remains high to Lake Hughes area as the battle against 23-square-mile blaze continues amid a heat wave. (Photo by Nick Ut/Getty Images)

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Il caldo soffocante non dovrebbe abbandonare la zona per almeno 10 giorni. Con l'aumento delle temperature, in California, si sono registrati anche importanti incendi

DEATH VALLEY NATIONAL PARK, CA - JUNE 30: Heat waves distort the appearance of a car when the temperature reaches 119 degrees and rising as a heat wave spreads across the American West on June 30, 2013 in Death Valley National Park, California. Weather forecasters predict that high temperatures could reach 130 degrees in Death Valley today and tomorrow, breaking the hottest-ever temperature for June of 128 degrees, set on June 29, 1994. It is also just four degrees shy of breaking the all-time world record of 134 degrees which occurred here 100 years ago on July 10, 2013. Since then, the 130-degree mark has never been repeated and the 129-degree mark has occurred on only four occasions. Formerly, it was thought that the world's highest temperature occurred in El Azizia, Libya in 1922 but an international team of climate experts from the World Meteorological Organization (WMO) declared that reading invalid because of the combination of poor weather instrumentation which was operated by an inexperienced record-keeper located in a bad spot for accurate readings. (Photo by David McNew/Getty Images)

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Più precuisamente si è verificato il cosiddetto "Firenado", fenomeno estremamente raro nel quale all'interno di un incendio, a causa di determinate condizioni atmosferiche, si produce una "lingua" di fuoco che inizia a ruotare formando un vortice