Active tsunami messages (NOAA/NWS Tsunami Warning Centers)
Currently-active tsunami CAP 1.2 messages retransmitted from the NOAA/NWS Tsunami Warning Centers (NTWC Palmer AK + PTWC Honolulu HI). CAP-native: severity/certainty/urgency are read verbatim from the source (severity.derivation='native'), and the full CAP block is exposed. Gated to status=Actual, non-Cancel, non-expired messages; an empty result means no active message is published. Sugra retransmits and does not issue warnings.
Query parameters
Bounding-box south edge (on the source epicenter).
Bounding-box south edge (on the source epicenter).
Bounding-box north edge.
Bounding-box north edge.
Bounding-box west edge.
Bounding-box west edge.
Bounding-box east edge.
Bounding-box east edge.
Maximum messages returned (most recently updated first).
Maximum messages returned (most recently updated first).
Response
Successful Response
Example response
{
"data": {
"query": {
"limit": 50
},
"events": [
{
"schema_version": "hazard-event/2",
"event_id": "ntwc-the5je",
"event_type": "tsunami",
"geometry": {
"lat": 34.1,
"lon": -118.2,
"depth_km": 8
},
"metrics": {
"preliminary_magnitude": "8.3",
"magnitude_type": "MWP",
"depth_km": 10,
"epicenter": "Near Coast of Central Chile",
"msg_type": "Alert",
"cap_event": "Tsunami Warning"
},
"severity": {
"severity": "Moderate",
"certainty": "Observed",
"urgency": "Past",
"derivation": "sugra-computed"
},
"source": {
"institution": "USGS",
"tier": "S"
}
}
],
"attribution": {
"sources": [
{
"registry_key": "usgs/earthquake",
"source_name": "USGS Earthquake",
"licence": "public-domain",
"citation": "U.S. Geological Survey Earthquake Hazards Program",
"disclaimer": "Magnitudes are preliminary and subject to revision."
}
],
"effective_reexport": "allowed"
}
},
"meta": {
"endpoint": "/api/v1/fred/us/cpi",
"data_time": "2026-04-16T14:30:00Z",
"response_time": "2026-04-16T14:30:12Z",
"provider": "Sugra API v1.0.1",
"source": "sugra_crypto",
"attribution": "Short interest and Reg SHO daily short volume data is owned by and sourced from FINRA (Financial Industry Regulatory Authority).",
"fallback_chain": [
"sugra_crypto",
"sugra_finance"
]
}
}