About / Sources & Status

Sources, latency, and feed reliability.

Bridge view between data provenance and technical feed health, with coverage, cadence, freshness, and known limits.

Each card combines provider provenance, coverage scope, expected cadence, current freshness, and known limits.

Healthy

Providers
USGS, INGV, EMSC
Coverage
Global + Italy regional relevance
Cadence
~60s dashboard refresh, ingest target <= 10 min
Freshness snapshot
max observed age: 10 min
Latency target
Target freshness: <= 10 min
Reliability note
High when at least two providers are fresh; medium in single-provider fallback.
Known limits
Magnitude revisions and location refinements can appear after first publication.

Outdated

Providers
Smithsonian GVP + observatory channels
Coverage
Global active volcano reports
Cadence
Event-driven + periodic refresh (target <= 20 min)
Freshness snapshot
max observed age: 256 min
Latency target
Target freshness: <= 20 min
Reliability note
High for bulletin-backed activity context; medium for very recent local changes.
Known limits
Observatory reporting cadence is not uniform across regions.

Healthy

Providers
NOAA / NWS bulletins
Coverage
Active tsunami watch/warning/advisory regions
Cadence
Bulletin-driven updates (target <= 30 min)
Freshness snapshot
max observed age: 13 min
Latency target
Target freshness: <= 30 min
Reliability note
High for alert-state visibility; requires source bulletin verification for legal decisions.
Known limits
Advisory texts can change quickly during evolving events.

Healthy

Providers
NOAA SWPC
Coverage
Kp index, storm level, flare context
Cadence
Frequent ingest (target <= 20 min)
Freshness snapshot
max observed age: 13 min
Latency target
Target freshness: <= 20 min
Reliability note
High for operational awareness; medium for short-term forecast certainty.
Known limits
Solar conditions can shift faster than fixed polling windows.

Outdated

Providers
Institutional pages and curated endpoints
Coverage
Bulletins, volcano cams directory, resources support
Cadence
Target <= 30-45 min depending on source
Freshness snapshot
max observed age: 256 min
Latency target
Target freshness: <= 45 min
Reliability note
Medium-high for context, not for immediate hazard detection.
Known limits
Some endpoints are curated and may include temporary unavailability.