City-scale disaster simulations built on historical event data and real physics — free, open, and built for everyone. Phase 2 target: live sensor integration.
128 individual agents — civilians, CAL FIRE crews, air attack, EMS — each making real behavioral decisions under wind, slope, and fuel conditions modeled from the August Complex fire record. Phase 1 of ARA.
The Pacific Northwest megaquake. 1,000 km fault. 4–6 minutes of violent shaking. Tsunami in 15 minutes. FEMA projects 13,000+ dead — the deadliest natural disaster in American history. Last rupture: January 26, 1700.
800 square miles of exposed lakebed — loaded with arsenic, lead, mercury, cadmium, and uranium. Wind events drive toxic dust east into the Wasatch Valley where 1.2 million people live. A 2026 USU study found arsenic and uranium in leafy crops even after washing. The lake needs 10 more feet of water. That could take decades. The dust is already here.
Two back-to-back Kona Low systems devastated Oahu's North Shore in March 2026 — worst flooding in 20 years. 5,500 evacuated. 236 rescued. Wahiawa Dam overtop threat. Reconstructed from NWS HFO advisories and USGS stream gauge records.
Category 5 at peak. 175 mph. 53 levee breaches flooded 80% of New Orleans — 1,833 dead, 400,000 displaced, $125B damage. Reconstructed from NHC Best Track AL122005, USACE levee survey, and FEMA surge zones.
April 18, 1906 — the San Andreas Fault ruptured 430 km and destroyed San Francisco. 7.7 million people live there now. MMI X shaking, liquefaction in Marina and Mission Bay, post-earthquake fires. 108 agents, 8 ICS crews. Tap ⚡ to trigger the mainshock.
Seven mass bleaching events since 1998. In 2024, 91% of reefs bleached — most severe on record. Watch 344,400 km² drain from coral color to white to grey as sea temperatures rise. NOAA Coral Reef Watch SST data, AIMS Long-Term Monitoring Program surveys.
"TerraSense exists to pioneer earth intelligence — making disaster preparedness universally accessible, advancing environmental science literacy, and building the world's most accurate public simulation — for everyone, simultaneously, with no one left behind."
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