Podcast Summary: Más de Uno – "El origen del sonido que ha ensordecido a todo Alcalá"

Date: February 16, 2026
Host: Carlos Alsina (Onda Cero)
Segment guests: Begoña, Alejandro Domínguez, Elena (vecina de Alcalá)

Overview

In this lively morning episode, Carlos Alsina and his team address the mysterious and thunderous sound that recently disrupted the quiet of Alcalá de Henares. Through a blend of humor, local reporting, and technical explanation, they unravel the source—a new, eco-friendly jet fuel test—and share residents’ colorful reactions to the event.

Key Discussion Points & Insights

1. A Disruptive Mystery in Alcalá

• For several nights, residents of Alcalá de Henares and surrounding areas were troubled by a continuous, deafening roar.
• The noise, likened to a jet engine far louder and more persistent than usual, sparked widespread speculation—ranging from military maneuvers to extraterrestrial visitors.

[01:33] Alejandro Domínguez:
"Durante tres noches consecutivas...sonaron esos motores, un rugido continuado…ese rugido de reactor que dificultaba incluso la conversación o escuchar la radio, la televisión dentro de casa a última hora de la tarde y hasta la cena fue imposible…"

2. Residents' Reactions: From Alarm to Humor

• Listeners contacted the station seeking answers, expressing both concern and curiosity.
• Elena, a local resident, shared her humorous, yet anxious response:
  • At first, she imagined everything from alien arrivals to attacks by world leaders.
  • She compared the noise to regular jet flyovers, but noted this time the sound was constant and overwhelming, exacerbated by overcast weather.

[03:05] Elena:
"Pensé que era o que estaba llegando vida extraterrestre, o que nos estaba atacando Trump o Putin, porque sí que empezó a sonar y pensé que era un avión, pero como era constante y muy alto, no era como los aviones, los cazas que pasan por aquí...pero es que será constante."

• Elena humorously admitted to fussing over her house in a bout of nervous energy:
  [04:22] Elena:
  "Pues me puse a recoger la casa recogida..."

3. The Science Behind the Sound

• The presenters dig into the unusual propagation of the noise:
  • The weather, notably the humidity, fog, and ongoing storms, amplified the sound, making it travel further and seem louder.
  • On clear days, such intensity would likely not have occurred.

[03:44] Alejandro Domínguez:
"La humedad en la atmósfera y el paso continuado de borrascas...llegó a favorecer la propagación del sonido. Si hubiera sido una jornada totalmente clara, no hubiera ocurrido lo que llegó a ocurrir..."

4. The Official Explanation: Eco-Friendly Jet Fuel

• After community uproar, the City Council and Spain’s Air and Space Force clarified the event:
  • Routine engine tests were carried out on Eurofighter jets with a new sustainable fuel called "Safari," derived from recycled household oils.
  • The goal: significant reduction in carbon emissions (up to 80%) and a lower infrared trace, making jets less detectable.
  • This test, while green, created extraordinary noise due to technical and weather-related reasons.

[04:49] Alejandro Domínguez:
"Era un test en pista para un nuevo combustible que se llama Safari...lo que busca es reducir emisiones de CO en los cazas y lo logra hasta en un 80%. También recortar la dependencia del petróleo...deja menos huella infrarroja."

5. The Community’s Takeaway

• Humor emerged as a coping mechanism, with residents joking about being “caught with a messy house” during a potential crisis.
• The local radio team empathized with residents and continued to deliver updates with characteristic wit.

[05:46] Carlos (joking):
"Lo importante es tener la casa recogida."

[05:54] Begoña:
"No te pille la guerra en mal estado."

Memorable Moments & Notable Quotes

• Elena's creative paranoia:
  "Pensé que era o que estaba llegando vida extraterrestre, o que nos estaba atacando Trump o Putin..." [03:05]
• Science tidbit:
  "La humedad…favorece la propagación del sonido." [03:44]
• Eco-fuel explanation:
  "Un nuevo combustible que se llama Safari…reduce emisiones hasta en un 80%." [04:49]
• Running gag:
  "Lo importante es tener la casa recogida." – Carlos [05:46]

Important Timestamps

• [01:33] – Description of the strange nights of noise in Alcalá
• [03:05] – Elena’s anecdote: confusion, humor, and alien theories
• [03:44] – Scientific explanation for the noise propagation
• [04:49] – Details of the Safari eco-fuel and the military tests
• [05:46] – Comic relief: “tener la casa recogida”

Conclusion

This episode of "Más de Uno" transforms a nightmarish neighborhood disturbance into a community story full of humor, scientific curiosity, and local spirit. Through playful banter and genuine investigation, Carlos Alsina and his guests offer both explanation and comic relief, highlighting how even the loudest mysteries can be solved—and laughed about—together.