🔒 Administrative Only — This information describes proprietary alert propagation technologies and is not for public distribution.
How YANA-IGY Propagates Alerts
A detailed look at how emergency alerts travel from detection to delivery — covering detection, targeting, analysis, verification, and multi-channel delivery.
Step 1 — Disaster Detection
YANA-IGY continuously monitors publicly available government data sources around the clock:
- USGS — earthquake and seismic activity data
- NOAA / NWS — severe weather watches, warnings, and advisories
- NASA — satellite-based fire detection
- NOAA buoy networks — ocean conditions and coastal monitoring
- USGS water resources — river gauges and flood stage levels
How Targeting Works — Polygon Geofencing
Targeting is driven by polygon-based geofencing against the official NWS warning shape, supported by ground-truth and motion data.
Primary trigger — NWS warning polygons: When the NWS issues a warning, they publish a precise GeoJSON polygon. YANA-IGY polls api.weather.gov/alerts/active and tests each subscriber's coordinates with a point-in-polygon ray cast (bounding-box pre-filter for speed).
Supporting layers: SPC reports (ground-truth), NEXRAD radar (storm motion/rotation), USGS gauges (river stages), position vs. storm (bearing, distance, ETA, convergence score).
Smart filtering: Only SEVERE/EXTREME tier events or hard warnings (Tornado, Flash Flood, Tsunami, Hurricane) are sent. A convergence score (0.0–1.0) blends NWS severity, certainty, and urgency. Each alert ID fires at most once (idempotency via nws-polygon-fired store).
Step 2 — Threat Analysis
Multi-factor analysis across: location & proximity, timing & speed, severity assessment, and secondary hazards (cascading dangers). Only events meeting alert criteria advance to verification.
Step 3 — Alert Verification
Every alert must pass multiple independent checks before delivery:
- Encryption & integrity — payload encrypted and digitally signed; rejected if signature fails
- Confidence scoring — minimum threshold required before approval
- Compliance review — TCPA and FCC compliance; alerts contain only move directives
Iterative Holographic Verification: A holographic representation is constructed and deconstructed, verifying every element against a strict binary TRUE/FALSE gate. An adaptive patching layer fills gaps and re-verifies from scratch until confirmed TRUE or definitively rejected.
Step 4 — Alert Delivery
- Primary SMS (Twilio) — strict format: threat level, hazard type, direction, ETA, safety window, move directive
- Email (alerts@yana-igy.com) — parallel delivery with same content
- Fallback: Ripple Mesh Relay — BLE + Wi-Fi device-to-device when cell towers fail; no personal data shared through mesh
Accessibility: Vibe Text / Dual-Sense for blind/low vision — vibrating Braille patterns, spoken audio, or both simultaneously.
Disclaimers: Does not replace WEA/EAS/AMBER. Does not provide guidance or evacuation routes. Does not share personal data. No sirens or external hardware.
Command Center