Ultra-realistic footage of a massive tsunami approaching a coastal city. Giant waves rise violently from the ocean, crashing into skyscrapers and flooding the streets. People run in panic, cars are swept away by the water, and sirens echo in the background. Shot with dynamic drone and handheld camera angles, capturing the chaos from above and at ground level. The sky is dark and stormy, lightning flashes intermittently. High detail, realistic physics, cinematic disaster atmosphere.