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Tsunami Warning Tracker: Active NOAA Alerts

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Check for active tsunami warnings, watches, and advisories from the official NOAA/National Weather Service alerts feed, optionally filtered by US coastal state. For coastal emergency management, ports and shipping operations, and coastal property and insurance teams. No key, no proxy.

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Pay per usage

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Timothy Kelvin

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Tsunami Warning Tracker: Active NOAA Alerts by Area

Check for active tsunami warnings, watches, and advisories from the official NOAA/National Weather Service alerts feed. Optionally scope to specific coastal states so you only see what matters for your operations.

Output (sample)

{
  "id": "urn:oid:2.49.0.1.840.0.abc123",
  "event": "Tsunami Warning",
  "severity": "Extreme",
  "certainty": "Observed",
  "urgency": "Immediate",
  "headline": "Tsunami Warning issued for the coastal areas of California",
  "description": "A tsunami warning is in effect...",
  "instruction": "Move to high ground or inland immediately.",
  "areaDesc": "Coastal Los Angeles County",
  "senderName": "NWS Los Angeles CA",
  "effective": "2026-09-19T08:00:00-07:00",
  "expires": "2026-09-19T14:00:00-07:00",
  "nwsUrl": "https://api.weather.gov/alerts/urn:oid:..."
}

No active alerts returns an empty result, still billed once for the check.

Who this is for

Coastal emergency management teams running a standing check instead of manually watching NOAA's site.
Ports and shipping operations deciding whether to hold or divert vessels.
Coastal property and insurance teams who need an automated trigger for a wider alert process.

Input

Field	Type	Description
`areas`	array	Two-letter US state/territory codes, e.g. `["CA", "HI", "AK"]`. Leave empty for all coastal areas nationwide.
`severities`	array	Limit to `"Tsunami Warning"`, `"Tsunami Watch"`, `"Tsunami Advisory"`. Leave empty for all three.

{
  "areas": ["CA", "HI"]
}

How it works

One direct call to the official NWS/NOAA alerts API (api.weather.gov), the same data source and reliability pattern already proven in US Weather Tracker and Field Operations Risk Briefing in this portfolio: automatic retries on transient failures, a per-attempt timeout so a slow response cannot hang the run. No key, no proxy, no scraping, public-domain US government data.

US Weather Tracker: everyday NWS forecasts and alerts for a specific location, not scoped to tsunamis
Earthquake Alert: the seismic event that most often triggers a tsunami warning in the first place
Active Hurricane Tracker / Volcano Alert Tracker: the rest of this portfolio's natural hazard family

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