Infographie formation des tornades | tremblement de terre schema

Weather / safety infographic titled "How Tornadoes Form". Archetype: FORMATION DIAGRAM. Editorial science-education illustration in minimal flat style, earth science earth tones palette, scientifically accurate, calm non-panic framing. Show a clean step-by-step formation of a tornado with atmospheric cross-sections, storm structure, wind arrows, pressure cues, cloud layers, and land surface. Include 6 numbered stages, each with a short heading in English, a one-line caption in English, and a scientific cue icon. Stage 1: "Warm, Moist Air" — caption: "Warm humid air near the ground rises beneath cooler, drier air aloft." icon: thermometer plus humidity droplet. Stage 2: "Wind Shear" — caption: "Winds change speed and direction with height, creating a horizontal spin in the air." icon: layered wind arrows. Stage 3: "Updraft Tilts Spin" — caption: "A strong thunderstorm updraft lifts and tilts the rotating air into a vertical position." icon: upward arrow with rotating spiral. Stage 4: "Mesocyclone Forms" — caption: "The storm organizes into a rotating supercell with a broad spinning core." icon: radar swirl. Stage 5: "Wall Cloud Develops" — caption: "Lowering cloud base forms as rotating air tightens beneath the storm." icon: lowered cloud with circular arrows. Stage 6: "Tornado Touchdown" — caption: "A concentrated rotating funnel extends to the ground and becomes a tornado." icon: funnel cloud symbol. Add a small side panel labeled in English for "Key Conditions" with simple visual markers for instability, moisture, lift, and wind shear. Add a compact explainer strip labeled in English for "Not Every Supercell Produces a Tornado". Include subtle legend elements for updraft, downdraft, rotation, precipitation, and cloud base, all labeled in English. No gore, no real disaster photos, no watermarks. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no graphic disaster gore, no real death photos, no watermarks Scientifically accurate, no graphic disaster gore, no real death photos, no panic framing. Safety steps must be conservative and aligned with major civil-defense guidance.