Where every number comes from
Meridian never fabricates data. Each provider below is labelled with its class, licence and refresh cadence — and its live status right now. When a source is down, the platform says so instead of guessing.
| Provider | Domain | Licence | Refresh | Status |
|---|---|---|---|---|
USGS Earthquake Hazards Government scientific agency | Earthquakes M4.5+ | Public domain | 5 min | ● CONNECTING |
NASA EONET Space agency curated feed | Storms, fires, floods, volcanoes | Open (NASA) | 15 min | ● CONNECTING |
Open-Meteo Forecast Open weather aggregator | Conditions + 7-day forecast | CC BY 4.0 | on demand | ● LIVE |
Open-Meteo Geocoding Open geocoder | Place search | CC BY 4.0 | on demand | ● LIVE |
NOAA CPC (ONI / outlooks) Government climate centre | ENSO status + probabilities | Public domain | weekly | ● DEMO |
NASA GIBS / Worldview Satellite tile service | Imagery layers | Open (NASA) | daily | ● PLANNED |
NASA FIRMS Satellite fire detection | Fire hotspots | Open (key) | 3 h | ● PLANNED |
GDACS Multi-agency alert system | Global disaster alerts | Open | 15 min | ● PLANNED |
Severity mapping. Earthquakes: M7+ → ▲ extreme, M6+ → ◆ severe, M5.3+ → ● moderate, otherwise ○ minor. EONET events are mapped by category (storms, floods and volcanoes ◆; fires and drought ●) until per-event intensity data lands with the backend.
Badges. OBSERVED = a measurement that happened. FORECAST = a model estimate with uncertainty. HISTORICAL = archived observations. DEMO/CACHED = sample or stale values, clearly flagged. EDUCATIONAL = illustration for understanding, not measurement.
Failure policy. If a feed is unreachable, its panels say so. Nothing is interpolated, simulated or quietly reused past its freshness window.
Attribution: earthquake data © USGS · event feed © NASA EONET · weather & geocoding © Open-Meteo (CC BY 4.0) · ENSO indices © NOAA CPC · land geometry © Natural Earth via world-atlas.