Cinematic Disaster Sequence: London Mega Tsunami Video Prompt

15-second photorealistic cinematic disaster sequence set in central London, UK. 0–4 sec: Begin with a calm wide establishing shot of London, Big Ben and the Houses of Parliament clearly visible, red double-decker buses moving through the streets, pedestrians walking naturally. Dark storm clouds rapidly gather overhead. Slow cinematic camera push forward. 4–8 sec: The atmosphere suddenly changes. A gigantic wall of seawater appears beyond the city and rushes toward London with overwhelming speed and realistic physical force. People notice the approaching flood and begin running. The camera smoothly pulls backward and rises slightly, revealing the enormous scale of the wave. 8–12 sec: The massive flood crashes into the city. Streets disappear beneath violent rushing water, vehicles are swept away, windows shatter, debris moves naturally with the current, and buildings suffer realistic structural damage. Big Ben remains visible through heavy rain, spray and debris. 12–15 sec: Wide aerial cinematic shot as the flood overwhelms large sections of the city. Water covers streets and lower buildings while debris floats through the flooded urban landscape. End on a dramatic distant view of devastated London beneath the storm. Realistic disaster physics, believable water dynamics, natural human reactions, physically accurate destruction, realistic camera shake only during impact, cinematic camera movement, volumetric rain and mist, natural lighting, realistic reflections, detailed textures, photorealistic faces and environments, premium theatrical disaster-film cinematography, anamorphic 35mm look, subtle film grain, immersive scale, no cartoon appearance, no surreal transformations, no text, no subtitles, no logos.