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NWS Meteorological Impact Statements

Pre-emptive 4–12 hour ATC impact statements from CWSU.

Agency

NWS

Update cadence

Every 4 hours

Category

Other

What we ingest

MIS raw text by CWSU/ARTCC, with the validity window.

Where this feed reaches

A region on this list means we fetch it. It is not a promise of station density: a listed region can still have sparse or no reporting sites near a given airport. Where a feed does not reach a region at all, this page says so instead of showing an empty panel.

  • Continental United States

How AeroCopilot uses it

AI Copilot uses MIS for departure-window guidance.

Powers these features

The product surfaces below depend on this feed.

AI Copilot

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

Cite this

Permalink

AeroCopilot — NWS Meteorological Impact Statements. Data: NWS (https://aviationweather.gov/data/api/). https://www.aerocopilot.ai/data-sources/mis.

Try the AI Copilot with this data

The Copilot has live access to NWS Meteorological Impact Statements during every conversation.