City-scale disaster simulations built on historical event data and real physics. Free, open, and built for everyone — from classrooms to emergency operations centers. Phase 2 target: live NOAA / USGS integration.
Every simulation reconstructed from documented disaster records — USGS, NWS, NHC, CAL FIRE, CGS, NOAA Coral Reef Watch, AIMS, FEMA HAZUS, USACE, PNSN, Utah DEQ. Not a live system. Phase 2: real-time data integration.
128 agents — civilians, CAL FIRE crews, air attack, EMS — each making behavioral decisions under wind, slope, and fuel conditions modeled from the August Complex fire record. Largest wildfire in California history. 1,032,648 acres.
The Pacific Northwest's overdue 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 — worst flooding in 20 years. 5,500 evacuated, 236 rescued, Wahiawa Dam overtop threat. Reconstructed from NWS HFO advisories and USGS stream gauge records. Includes the T-6hr early warning panel.
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 zone data.
The San Andreas Fault runs beneath 7.7 million people. This simulation models a repeat of the 1906 rupture — 430 km of fault, MMI X shaking, liquefaction in Marina and SoMa from CGS hazard maps, 8 ICS crews and 100 civilian agents.
Seven mass bleaching events since 1998 — six since 2016. In 2024, 91% of surveyed reefs bleached in the most severe event on record. Watch reef colors drain from coral red to white to grey as SST anomalies accumulate. 344,400 km². NOAA Coral Reef Watch data.
"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."
A nonprofit under the TerraSense brand universe ensuring that ARA remains free and accessible to every human on earth — with no filter on who deserves warning. Education is not a product. It is a right.
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