Extreme Temperature Diary- Thursday December 18th, 2025/Main Topic: Met Office- 2026 Will Bring Heat More Than 1.4C Above Preindustrial Levels

The main purpose of this blog will be to track planetary extreme, or record temperatures related to climate change. Any reports I see of ETs will be listed below the main topic of the day. I’ll refer to extreme or record temperatures as ETs (not extraterrestrials).😜

Met Office: 2026 will bring heat more than 1.4C above preindustrial levels | Climate crisis | The Guardian

Climate crisis

Met Office: 2026 will bring heat more than 1.4C above preindustrial levels

Forecast is slightly cooler than the record 1.55C reached in 2024, but 2026 set to be among four hottest years since 1850

Climate crisis

Ajit Niranjan Europe environment correspondent

Next year will bring heat more than 1.4C above preindustrial levels, meteorologists project, as fossil fuel pollution continues to bake the Earth and fuel extreme weather.

The UK Met Office’s central forecast is slightly cooler than the 1.55C reached in 2024, the warmest year on record, but 2026 is set to be among the four hottest years dating back to 1850.

A blanket of carbon smothering the Earth has begun to jeopardise the stable conditions in which humanity has thrived, worsening weather extremes and increasing the risk of catastrophic tipping points. The Met Office expects 2026 will be between 1.34C and 1.58C hotter than the average from 1850-1900.

“The last three years are all likely to have exceeded 1.4C, and we expect 2026 will be the fourth year in succession to do this,” said Adam Scaife, a climate scientist at the Met Office who led the forecast. “Prior to this surge, the previous global temperature had not exceeded 1.3C.”

World leaders promised to limit global heating to 1.5C (2.7F) by the end of the century at a landmark climate summit in Paris 10 years ago. As the target is measured by a 30-year average, it is still physically possible to achieve, despite individual months and years crossing the threshold.

“2024 saw the first temporary exceedance of 1.5C and our forecast for 2026 suggests this is possible again,” said Nick Dunstone, a climate scientist at the Met Office. “This highlights how rapidly we are now approaching the 1.5C Paris agreement target.”

Last week, EU scientists said 2025 is “virtually certain” to end as the second or third-hottest year on record, confirming projections from the World Meteorological Organization in November.

Average global temperatures from January to November were 1.48C higher than preindustrial levels, according to Copernicus, the EU’s Earth observation programme.

It found the anomalies were identical to those recorded in 2023, the second-hottest year on record. Last year, the Met Office predicted 2025 would see temperatures 1.29C to 1.53C higher than preindustrial levels.

Natural variation including warming El Niño conditions boosted global temperatures during 2023 and 2024, but gave way to weakly cooling La Niña conditions in 2025. The fluctuations take place against a backdrop of heat-trapping gas pumped out of power plants, cars and boilers, as well as the destruction of nature that can suck carbon from the air.

Levels of carbon dioxide clogging the atmosphere soared to unprecedented levels last year, a UN report found in October. As well as the unrelenting burning of fossil fuels and the fallout from rampant wildfires, scientists fear the Earth’s natural “carbon sinks” may be beginning to fail.

So it's goodbye UK coastal #nuclear ‘Massive disruption’: UK’s worst-case #climate crisis scenarios revealed by scientistsScientists say government must prepare for unlikely but ‘plausible’ 4C rise in temperature and a 2-metre rise in sea levels.www.theguardian.com/environment/…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T16:35:46.111Z

So much trash in this Matt Yglesias NYT rant but this specific bit where has has a go at @doctorvive.bsky.social is absurd even for him. Eliminating fossil fuels is basic fundamental science shit, not environmentalist shitarchive.ph/02ze4www.ipcc.ch/report/ar6/s…

Ketan Joshi (@ketanjoshi.co) 2025-12-18T13:41:16.780Z

Still waiting for the Climate Working Group (TM) to respond to the many critiques of the DOE-commissioned report, but meanwhile the hits keep coming…The Rate of U.S. Coastal Sea‐Level Rise Doubled in the Past Century. Piecuch (2025) agupubs.onlinelibrary.wiley.com/doi/10.1029/…

Gavin Schmidt (@climateofgavin.bsky.social) 2025-12-18T19:05:38.812Z

World’s ability to feed itself is under threat from the “chaos” of extreme weather caused by #climate change. www.theguardian.com/environment/…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T11:35:43.634Z

#AI boom has caused same CO2 #climate emissions in 2025 as New York City.Tech companies reaping benefits of artificial intelligence age but society is left to pay cost.www.theguardian.com/technology/2…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T16:12:42.784Z

If you are in the US and you would like to send a message to your elected representative about the proposed dissolution of the National Center for Atmospheric Research, @agu.org makes it easy with a template here: agu.quorum.us/campaign/151… #AGU25

Katharine Hayhoe (@katharinehayhoe.com) 2025-12-18T20:01:01.846Z

WCRP’s APARC releases a landmark report on global atmospheric impacts of the 2022 Hunga volcanic eruption. 159 scientists. 21 countries. 3 years. One report. More information here: https://loom.ly/bF203o8 #WCRP #APARC #ClimateScience #HungaEruption

World Climate Research Programme (WCRP) (@wcrpclimate.bsky.social) 2025-12-18T11:03:02-08:00

Did you know Sea Level used to be 400 Feet Lower and Florida was 2X bigger?! Here’s the science behind it. #climate #climatechange #florida #fyp #iceage

Jeff Berardelli (@weatherprof.bsky.social) 2025-12-18T01:46:38.144Z

To give you an idea of why rivers are so swollen and flooding is historic, look no further than the high elevation rain/ snow. Up to 30” of precip has fallen in 2 weeks atop the mountains east of #SeattleMuch more on the way over the next 2 weeks.

Jeff Berardelli (@weatherprof.bsky.social) 2025-12-17T22:36:21.988Z

Communities are already experiencing extreme weather events at a frequency and intensity once unimaginable: and aging infrastructure, overburdened health systems, and emergency frameworks can't keep up.This new report summarizes the experiences of more than 300 community-based representatives:

Katharine Hayhoe (@katharinehayhoe.com) 2025-12-18T17:54:41.109Z

Science has named the seemingly unstoppable growth of renewable energy worldwide as the 2025 Breakthrough of the Year.Learn more about this year's #BOTY and other big advances in science: https://scim.ag/493Tpgx

Science Magazine (@science.org) 2025-12-18T19:05:05.104288748Z

Who could possibly have anticipated that paying back Big Oil's political bribe by cancelling a bunch of clean energy projects at a time of increasing demand would drive up energy prices?!?Welp, at least continuing fossil fuel pollution doesn't drive up a bunch of other crippling costs for us, too!

Yellow Dot Studios (@yellowdotstudios.bsky.social) 2025-12-16T19:48:51.128Z

Since this op-ed specifically cites the example of other countries let me remind you that Canadian liberals' decades-long attempt to reconcile with the oil and gas industry and the province of Alberta have yielded no benefits for climate whatsoever and I'm not aware of any economic benefits either.

Katharine Hayhoe (@katharinehayhoe.com) 2025-12-18T18:56:21.337Z

We often think, “I’m just one person—what difference could I make?”This story shows that, when we use our voice, the answer is: a lot.So if one person can catalyze so much harm, imagine the good each of us can choose to support and advocate for.Read more by @fieseler.bsky.social here:

Katharine Hayhoe (@katharinehayhoe.com) 2025-12-18T16:54:54.217Z

Read more about this man's western counterpart, a woman in Oregon who has solar panels on her own roof yet fights against solar energy, in my Talking Climate newsletter here:

Katharine Hayhoe (@katharinehayhoe.com) 2025-12-18T16:55:58.600Z

UK #Solar generation smashes annual recordsolarenergyuk.org/news/solar-g…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T13:31:37.298Z

"Queued Up", a comprehensive analysis of generator interconnection requests to the U.S. transmission system (emp.lbl.gov/queues)

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T16:28:42.847Z

UK offshore wind farm plan to generate 300MW, comprising transmission infrastructure, offshore substations, offshore and onshore export cables (underground), onshore substation, and connection infrastructure to National Grid. www.gov.uk/government/n…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T11:33:20.902Z

Meet the biggest heat pumps in the worldbbc.com/news/article…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T11:38:44.147Z

Hydrogen emissions ‘supercharging’ #climate warming impact of methane www.carbonbrief.org/hydrogen-emi…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T11:36:52.068Z

So ROSATOM – #Russia state nuclear corp – part of Russia's #nuclear weapons program – is 'top' …

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T13:35:28.307Z

'Why #Nuclear Power Can’t Fix the Grid: Cost, Delays, Risks & the SMR Reality'www.youtube.com/watch?v=7cEZ…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-18T12:53:19.027Z

Join us for a critical conversation on the future of U.S. atmospheric science.UCAR President Antonio Busalacchi hosts this town hall on what’s at stake if NSF NCAR is dismantled. buff.ly/jR6tGwo

AGU (American Geophysical Union) (@agu.org) 2025-12-18T15:17:30.097Z

Our Editorial in Nature Water explores the role of the EPA in public health protection, emphasizing the preventive benefits of clean air and water. www.nature.com/articles/s44…

Nature Water (@natwater.nature.com) 2025-12-18T18:01:07.713Z

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