Thread: Why is it so Hot Everywhere?

• Malawi swelters in record heat with temperatures nearly 20C above average

Malawians endured the country’s hottest weekend on record, with temperatures reaching nearly 20C above the seasonal average.

The heatwave began last Thursday with the government warning people to stay out of the sun, to keep hydrated, and avoid alcohol and caffeine. Some school buildings in the south of the country were evacuated, and children were taught in the shade of playground trees.

By Saturday, parts of Malawi saw a maximum temperature of 43C (109F), compared with an average of nearly 25C (77F) for the time of year. The temperatures had dropped by Monday, but in an advisory last week the country’s Department of Climate Change and Meteorological Services warned of a “prolonged period of hot and uncomfortable weather” throughout October.

Antarctica had its warmest September

And a reminder

Effective radiative forcing from 1750 to 2022

Map of regions with record and near-record warmth in September.

• Porirua smashes temperature record, train speed restricted due to heat - NZ Herald

October temperature records have been shattered in the lower North Island.

Porirua reached 24.1C yesterday afternoon, a huge jump from its previous record of 21.9C for the month, set in 2021.

yesterday's news release

The last 12 months were the hottest in recorded history

Earth just experienced its hottest 12-month span in recorded history.

Copernicus ECMWF- ERA5 data from @CopernicusECMWF indicates that 17 November was the first day that the global temperature exceeded 2°C above pre-industrial levels, reaching 2.07°C above the 1850-1900 average and the provisional ERA5 value for 18 November is 2.06°C.

• Phoenix breaks 2 heat records on Wednesday; chance of weekend storms

It was a record-setting day on many fronts for metro Phoenix. We started with a low of 97 degrees at Sky Harbor Airport. That’s the warmest low recorded in Phoenix since they began taking weather measurements in 1895. The previous record, 96, was set on July 15th, 2003. One can only wonder when the first low of 100 will be recorded in Phoenix. Also, Phoenix reached a high of 119 degrees.

That set a record for today’s date, which was 116 degrees. That record went back to 1989. And, of course, we extended the number of days straight with a high of 110 degrees or more to 20 days. That heat streak could last into the middle of next week.

Zeke Hausfather - November 2023 is now virtually certain to be the warmest November on record, at around 1.6C above preindustrial levels: https://twitter.com/hausfath/status/1728849050529927249

Zeke Hausfather - It is now official: November was the warmest November on record by a wide margin in the JRA-55 dataset, beating the prior record set in 2020 by 0.3C.

November 2023 was 1.6C above preindustrial levels, and the year-to-date temperatures are 1.4C above preindustrial.: https://twitter.com/hausfath/status/1731078958291284359

More than a third of days in 2023 were more than 1.5°C above preindustrial level

Game over!

We have reached the point of no return. They are just having a hard time admitting it.

It’s official: 2023 is Australia’s hottest year on record

Penrith in New South Wales has just hit 40.7C – and today’s extreme heat has helped 2023 to become the hottest year on record, says the Climate Council.

“2023 has officially been declared as the hottest year on record, weeks before the year’s end”, tweeted the council.

Earlier, the prime minister, Anthony Albanese, said the heatwave was “a reminder that there just might be something in this climate change stuff”.

Climate Council - BREAKING: 2023 has officially been declared as the hottest year on record, weeks before the year’s end. The broken record comes as a heatwave scorches large swathes of the country, threatening to push temperatures into the 40℃s in Sydney. https://twitter.com/climatecouncil/s...81165513154580

43 degrees at Sydney Airport two and a half hours ago.

Thomas Saunders - As of today it is now the warmest start to summer on record for #Sydney. We are averaging over 29C for maximums - four above the long term average. Western suburbs have averaged up to 34C. #heatwave #NSW: https://twitter.com/TomSaundersABC/s...09334357655990

Mika Rantanen - Malaga airport has just reached 29.4°C, smashing its December heat record by an unprecedented margin.

The previous record of 24.6°C (from 1998) was beaten by almost 5 degrees.: https://twitter.com/mikarantane/stat...02860544086075

• Australia Braces for Warm Christmas Season Amid Record-Breaking Temperatures

Heatwave Marks the Start of Summer

An ongoing heatwave across New South Wales has set a new record for the hottest start to summer in parts of Sydney, with maximum temperatures reaching up to 5 degrees Celsius above normal. This extreme heat, believed to be induced by El Niño, has seen temperatures in some suburbs hit record highs. Coupled with stifling humidity that impedes the body’s natural cooling mechanism, this prolonged heat spell is expected to persist in the run-up to Christmas, keeping temperatures above average for at least the coming week.

Record-Breaking Temperatures in Dubbo

In Dubbo, residents are enduring the hottest start to summer in at least a century, with temperatures averaging about four degrees hotter than usual. The lead-up to Christmas is predicted to be warmer than average, with a chance of showers and storms on Christmas Day. The average temperature in Dubbo so far in December is 27.4 degrees, which is four degrees higher than the long-term average. In addition to the heat, the town could see up to 30 millimeters of rain on Tuesday and Wednesday, with more showers and high humidity expected in the days leading up to Christmas.

• Japan bakes as mercury hits record high in December

Much of Japan basked in summer temperatures despite the calendar showing there are only 10 days to go before Christmas.

As of 3 : 10 p.m., 21 observation points around the nation had clocked record high temperatures for December, the Japan Meteorological Agency said Dec. 16.

Unusually warm weather has persisted following the hottest summer in Japan on record.

The mercury reached a high of 26.2 degrees in Yokoshibahikari, Chiba Prefecture; 26 degrees in Odawara, Kanagawa Prefecture; and 25.5 degrees in Ichihara, Chiba Prefecture.

Record temperatures were also observed Dec. 15 at 57 locations around Japan, including 25.6 degrees in Miyazaki city on the main southern island of Kyushu. The last time the day’s high there exceeded 25 degrees in December was 133 years ago.

• Heat and cold records broken in just five days in Argentina

Argentina broke records for heat and cold within a short window of just five days this week, with temperatures plummeting a jaw-dropping 30 degrees Celsius as a heatwave gave way to historic snowfalls.

A cold front from Patagonia caused temperatures in Buenos Aires to drop from a high of 38.1 degrees Celsius (100.6 degrees Fahrenheit) last Sunday to only 7.9 degrees Celsius (46.2F) on Thursday – a record low for the month of February since 1951, the National Meteorological Service reported.

The lowest ever was 4.2 degrees Celsius in 1910.

The South American country this week battled its eighth heat wave so far this summer with temperatures shooting up to nearly 40C (104F) in the center and north.

Well, not like it's the end of the world.

Major weather stations in November: 23 all-time heat records, no all-time cold records

Among global stations with a record of at least 40 years, 23 set, not just tied, an all-time heat record in November, and no stations set an all-time cold record:

Caico (Brazil) max. 40.2°C, November 5
San Jose de Chiquitos (Bolivia) max. 44.1°C, November 8
Las Lomitas (Argentina) max. 46.0°C, November 8
Concepcion (Paraguay) max. 43.5°C, November 8
Prats Gill (Paraguay) max. 45.4°C, November 8
Nueva Asuncion (Paraguay) max. 44.9°C, November 8
Robore (Bolivia) max. 42.6°C, November 9
Aquidauana (Brazil) max. 41.5°C, November 12
General Bruguez (Paraguay) max. 43.8°C, November 12
Yacuiba (Bolivia) max. 44.9°C, November 12
Alegre (Brazil) max. 41.6°C, November 13
Itapira (Brazil) max. 39.2°C, November 14
Campos do Jordao (Brazil) max. 31.0°C, November 14
Florestal (Brazil) max. 38.6°C, November 14
Puerto Suarez (Bolivia) max. 43.5°C, November 16
Cochabamba (Bolivia) max. 36.2°C, November 17
Xerem (Brazil) max. 42.3°C, November 18
Alegre (Brazil) max. 41.8 °C, November 18
Governador Valadares (Brazil) max. 41.7 °C, November 18
Muriae (Brazil) max. 41.2°C, November 18
Salinas (Brazil) max. 42.7°C, November 19
Majunga (Madagascar) max. 39.0°C, November 21
Waingapu (Indonesia) max. 37.3°C, November 22

Twenty-one all-time national/territorial heat records set or tied in 2023

Thailand: 45.4°C (113.7°F) at Tak Agromet, April 15
Laos: 42.7°C (108.9°F) at Luang Prabang, April 18; beaten one day later with 42.9°C (109.2°F) at Sayaburi, April 19; beaten again on May 6 and May 7 with 43.5°C (110.3°F) at Luang Prabang
Vietnam: 44.1°C (111.4°F) at Hoi Xuan, May 6; beaten again with 44.2°C (111.6°F) at Tuong Duong, May 7
Singapore: 37.0°C (98.6°F) at Ang Mo Kio, May 13 (tie)
Chad: 48.0°C (118.4°F) at Faya, May 25; tied again on June 16
China: 52.2°C (126°F) at Sabao, July 16
Vatican City: 42.9°C (109.2°F) at Roma Macao, July 18
Cayman Islands: 35.3°C (95.5°F) at Owen Roberts airport, July 22
Albania: 44.0°C (111.2°F) at Kucova, July 25
Morocco: 50.4°C (122.7°F) at Agadir, August 11
U.S. Virgin Islands (U.S.): 35.6°C (96.1°F) at St. Croix, August 14 (tie); beaten on September 9 with 36.1°C (97°F) at St. Croix
Dominica: 36.6°C (97.9°F) at Canefield Airport, August 27
Aruba: 36.5°C (97.7°F) at Queen Beatrix Airport, August 28 (tie)
Saba: 34.4°C (93.9°F) at Juancho Yrausquin Airport, August 29; tied again on September 8
Martinique (France): 36.6°C (97.9°F) at Ducos, September 15
St. Barthelemy (France): 35.5°C (95.9°F) at Gustavia, September 15 (tie)
French Guiana (France): 38.1°C (100.6°F) at Grand Santi, September 15; beaten on September 25 with 38.8°C (101.8°F) at St. Laurent do Moroni; beaten again with 39.1°C (102.4°F) at Grand Santi, October 14
Guyana: 40.1°C (104.2°F) at Ebini, September 26
Peru: 41.4°C (106.5°F) at Tingo de Ponaza, September 27; beaten again with 41.6°C (106.9°F) at Inapari, October 7
Suriname: 38°C (100.4°F) at Zanderj Airport, September 30 (tie)
Barbados: 35.6°C (96.1°F) at Bridgetown, September 30

• Ottawa weather: Ottawa breaks 130-year-old heat record

With the daytime temperature reaching 6 C in Ottawa on Monday, today is the warmest Dec. 18 in over 130 years.

The temperature reached a high of 5.9 C at 10 a.m. in Ottawa.

Environment Canada's historical averages(opens in a new tab) show the city beat the previous record of 5.6 C recorded in 1895 and 1921.

That makes it the highest temperature since record keeping began in 1938 at Ottawa's international airport and between 1889 and 1938 at the Central Experimental Farm

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• Record warm and snowless Christmas on tap for Midwest, East

Forget the chance of a white Christmas in the Midwest and much of the East this year. Instead, record warmth is on tap.

Christmas History Made: Record High Falls in Rochester

Rochester, MN - The weather over the Christmas holiday was historic in Rochester this year.

That’s according to the National Weather Service, which is indicating the Rochester area saw the warmest highs ever recorded since record keeping began in the city in 1886.

Christmas Eve day and Christmas Eve night also saw record-setting temperatures. Some of the records broken had stood since 1936.

The high reported at the Rochester Airport reached 50 on Christmas Eve Day. That breaks the previous record high of 41 set back in 2021.