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NWSWeather

SIGMET (Significant Meteorological Information)

Hazards advisory covering severe icing, severe turbulence, dust storms, sandstorms, volcanic ash and convective activity.

Agency

NWS

Update cadence

Issued as needed, polled every 15 minutes

Category

Weather

What we ingest

Geometry polygons + altitude bands + validity windows.

How AeroCopilot uses it

Renders SIGMET overlays on the planning map and feeds the hazard avoidance tool.

Powers these features

The product surfaces below depend on this feed.

Map hazards layerAI hazard summary

Upstream source: https://aviationweather.gov/data/api/

Try the AI Copilot with this data

The Copilot has live access to SIGMET (Significant Meteorological Information) during every conversation.