Real-time coverage of severeStorms event on Pandita Data.
⛈️ OPEN LIVE 3D WEATHER ALERTSThe ocean is a furnace. Beneath Tropical Cyclone Vaianu—spinning at -26.8°, 179°—the Coral Sea temperature climbs to 29°C, a threshold where the atmosphere surrenders. Wind shear is light. Upper-level outflow channels moisture skyward. You are standing on a ship 200 kilometers away, watching the horizon darken not gradually, but as though a fist is closing. The barometer falls 5 millibars per hour. Lightning etches the anvil cloud. There is no gradual. There is only the moment before, and the moment the storm arrives.
Tropical cyclones are heat engines—they convert ocean warmth into rotational kinetic energy with ruthless efficiency. Vaianu formed when three conditions aligned perfectly. First: warm water. The South Pacific, in April, holds enough thermal energy to sustain convection. Second: the Coriolis force. At 26.8° south, Earth's rotation is strong enough to spin rising air into a vortex rather than letting it drift randomly. Third: low wind shear. When the upper atmosphere moves at the same speed as the lower atmosphere, the developing storm's circulation doesn't tear apart.
Inside the eye wall—the ring of convection surrounding the calm center—updrafts reach 200 kilometers per hour. Air rises, cools, and releases latent heat. That heat fuels more updrafts. The positive feedback loop is self-sustaining until it encounters land or cooler water. The eye itself, paradoxically, is serene: sinking air warms, clouds evaporate, blue sky appears. Then the back edge of the wall hits. The wind swings. The chaos returns.
Vaianu is visible to five sensor systems simultaneously. NOAA's GOES-17 satellite captures cloud-top temperatures and estimates central pressure every 15 minutes. The Navy's Joint Typhoon Warning Center integrates microwave data from NASA's Aqua satellite, which pierces cloud cover to measure rainfall rates within the storm. Sea-surface temperature models from NOAA feed forward guidance—warmer anomalies extend Vaianu's life; cooler water ends it. Pressure observations from ships and buoys anchor the computer models. Wind data from QuikSCAT radar and ASCAT scatterometers measure surface-level stress.
On Pandita Data, our live 3D weather simulation ingests this real-time data and renders the storm's three-dimensional structure. You see the eye wall as it is *now*—not a forecast, but the current state. Watch the pressure field tighten. Watch the outflow pattern shift as Vaianu feels the subtropical jet stream to the south. The simulation becomes a window into a process too vast and swift for human intuition alone.
Tropical cyclones require warm water (≥26.5°C), atmospheric moisture, sufficient Coriolis force (beyond 5° latitude), and low wind shear. A single cyclone can deliver 500 billion tons of rainfall. Storm surge—driven by wind pushing water onshore—is often deadlier than wind alone. Climate change is not increasing cyclone *frequency*, but is intensifying the strongest systems and slowing their forward motion, extending rainfall impacts.