Joan Carles Fortea

17” of rain in 6 hours in Palm Beach Gardens, almost 2X the criteria of a 1-1000 year rain event. Tragically it may have been the cause of the jet crash, as a meso low formed and concentrated 5” per hour rain rates, and lightning, with possible icing in the cloud. To be clear, this is the 3rd 1000 year rain event in the US in 3 days, amplified by Super #ElNino. A 1000 year rain event is based on historical statistics, and doesn’t mean it happens only once per 1000 years, it means there’s a 1-1000 chance any year. And in today’s warmer climate, with El Niño too, the atmospheric is now more likely to produce these rare events. #PalmBeach #Florida #Flood

Buenas tardes Desarrollos convectivos sobre la dorsal noreste de #Tenerife Pequeño timelapse (con 🎵), realizado con imágenes de una de las webcam del Instituto de Astrofísica de Canarias (I.A.C.)

⛈️ La météo orageuse dantesque en #Floride a "certainement contribué" au crash impressionnant du jet : "Le givrage peut se produire extrêmement vite, entraînant des changements rapides dans le comportement aérodynamique de l’avion." ⤵️ @Le_Parisien 1/6 leparisien.fr/faits-divers/c…

EXTRAORDINARIA ACTIVIDAD ELECTRICA EN CANARIAS. Desde Tenerife, se aprecian las continuas descargas sobre la Gomera y sobre todo sobre LaPalma, han sido horas con cientos de descargas eléctricas sin parar. Video timelapse

Here's a scan-by-scan breakdown of the thunderstorm cell that N722BD flew into. We've contoured the 30 dBZ surface, which signifies where moderate precipitation was present. The thunderstorm cell grew to 48,300 feet by 12:56 p.m., meaning that, at 12:48 p.m. when the plane flew through, it was still rapidly growing vertically. 15,000 feet of growth in under 20 minutes is a VERY intense updraft. Now what about icing? It's true that the ambient temperature OUTSIDE the storm was around minus-45 degrees Fahrenheit. That's generally too cold for icing, which requires supercooled water droplets – i.e. water droplets that remain a liquid at temperatures below freezing. Water sometimes is slow to freeze UNLESS it has something to freeze onto – like a cold surface (a plane). At minus-45, moisture would have already frozen into ice crystals, i.e. snowflakes, which aren't really dangerous to aviation. HOWEVER, the rapid growth of this thunderstorm cell 1.) carried LOTS of heat upwards, bending temperature surfaces and probably making the core of the thunderstorm cell 15 to 20+ degrees warmer. That warmth was probably amplified by the latent heat release of water droplets freezing, as my colleague Roger Edwards adroitly pointed out, and 2.) the swift updraft probably transported large, tropical raindrops upwards so quickly that some liquid remained even at altitude. A study in the journal "Nature" found that deep convective (thunderstorm) clouds regularly have supercooled water droplets down to minis-38 degrees, and it's probable that, at 35,000 feet, the temperatures inside this cloud were warmer. Therefore, while this wouldn't ordinarily be an "obvious" icing case, the forensic meteorology suggests icing as a probable contributing factor or cause. The NTSB will continue to investigate.

La burbuja de la IA ya ha explotado en China, y está a punto de hacerlo en EEUU. Está ya más inflada que la peor burbuja que ha vivido la humanidad. Por eso se están hundiendo en bolsa muchas empresas tecnológicas. Ya es seguro que esto va a explotar y va a tener consecuencias sistémicas 🧵