Jeff Berardelli

As a result of the ongoing heatwave, which is #France's worst June #heatwave on record, 2026 already accounts for the second most all-time record high temperatures for any calendar year. #Canicule #ClimateChange

🌡️🔥 L'indicateur thermique national vient d'atteindre 30,02°C, une valeur jamais observée depuis le début des mesures en 1930. Cette journée devient la plus chaude jamais enregistrée, devant celle d'hier, d'août 2003 et de juillet 2019. Nous ne sommes qu'en juin. #canicule

112F again today in France

@OpinePinAZ These are "feels like"... heat index numbers.

Whoah! Des Moines is going to hit 108! Sadly, the residents will quench their thirst with water from the highly polluted Raccoon River. A most endangered river due to its overabundance of fertilizer nitrates.

A look at today's highs in Western #Europe today, Wednesday June 24 2026. Almost identical to yesterday in #France. Almost 1/2 the nation is 40+/ 104F

Breaking News! Code: Yay! I finally figured out how to extract the text data from CFSv2 "nc" files. Below is my re-do of the NOAA graphic for Wednesday, June 24th, using all the available data for 40 model runs. Original: cpc.ncep.noaa.gov/products/CFSv2…

Great thread by Robert on the heatwave. Well worth a read.

Heat Levels Up! 2 mini heat domes will combine into one bigly mountain of heat across the US. From Chicago to Dalllas to Atlanta to Pittsburgh and everywhere in between get ready to feel the the triple digits. Pictured here are Heat Index numbers (not actual highs) for next week. #heatwave

What’s the weather pattern behind the extraordinary #heatwave in #Europe and how does a warmer Earth contribute? It’s “blocky” and “wavy” and there may be a trend. Here’s the latest science…

It is due directly to jet stream positioning. I said it in my video. With that said, the baseline is at least 2C warmer in Europe and there are lots of papers connecting a increasing split flow jet stream with western European heat waves. So while the dynamical connection is not concrete, it does seem to be a factor.

@WeatherProf I get that, but would you admit that this anomaly is due to the jet stream positioning and high pressure and not the temp? Now you can argue that climate change may have disrupted these factors, but that is a much more complicated system to correlate.

The calculation - which perhaps you know - is based on the chance of an event like this in the historical climate baseline of the calculation. So in this case the record is 85 years but I based the calc off the 1990-2020 average. So it answers the question: how often should an event like this happen in a climate like the 1990-2020 climate. If I based it on the 20th century average the return period would be 100K years+ prob

@WeatherProf This is a silly calculation and statistic. 18K years ago, Pissos was located along a frozen step with glaciers to the north. Couldn't possibly have been hot. It's like saying that it's the worst customer service you've had at McDonalds drive-thru in the past 3,000 years.

Not 2050. Today in France. Peak Temps. Every pink number is 40C+ (104F+) with many stations at 44C+ (111F+). A previously impossible heatwave, soon to be an annual tradition, only hotter.

To be clear, this is specifically for the area immediately surrounding Pissos and only for June (not all year). If I were the include the whole summer I’m guessing the sigma would drop, return interval would be lower, but it would still prob be a 1–in-1000 yr event or greater.

@WainCarl Today

@WeatherProf Ahhhh, ok, saw it on a UK weather enthusiasts feed

Europe’s extreme heat is increasing faster than other regions and faster than models predict! So what is causing this heatwave and how do evolving climate patterns like the “Double Jet” and the “Cold Blob” impact the #Europe #heatwave trend? I dig into the latest climate science in this short video.

Well done.

The Marine #Heatwave in the #Mediterranean Sea is neck and neck with 2025 for record hot in June, having been baked by two historic heatwaves so far this season. Water temps up to 7C/ 12.6F above normal and they should continue to heat up into next week.

@RichieSandys What is the lie here? 123 all time records were broken in France yesterday. More today, tomorrow etc… where is the lie?

@WeatherProf Unbelievable Jeff... But seriously Jeff, your lies are, unbelievable..

Europe is melting! The size, intensity, and longevity of this #heatwave is enormous. Peak temperatures will reach 45°C / 100-115°F this week in #France . You are looking at temperature anomalies in the cloud layer over the next 2 weeks, which peak at +20°C. #Europe is Earth’s fastest warming continent, and European heat extremes are increasing faster than models project they should, likely due to changes in steering flow. In a rapid attribution study by Climameter it is estimated that #climatechange has made this June heatwave up to 4°C hotter (7°F) than it would have otherwise been without warming.

@Aigle_e @DaveThroup I’ll post a new one today once we see the peak heat

@WeatherProf @DaveThroup I was thinking that Dave was the author. Ooops

Dans un climat stationnaire, les températures observées hier en France auraient une période de retour moyenne d'une fois tous les 7100 ans. Aussi extrême que possible. Virtuellement impossible sans le changement climatique causé par la combustion de combustibles fossiles.

@RARohde Actually he found higher….

@WeatherProf What source are you looking at for the 43.3 ? I was trying to find the time series, but so far the records I've found that has been updated in near real-time has been a bit cooler than that. (But also maybe have incomplete temporal resolution.)

@RARohde From @DonSuth89069583