Agency
NOAA
Update cadence
Every 6 hours
Category
Weather
What we ingest
GRIB2 records fetched by byte-range from NOMADS and baked into the hazard tile pyramid: column-max EDR turbulence (MXEDPRM) plus per-level EDR (EDPARM) at the 3,000/6,000/9,000/12,000/18,000 ft altitude bands, and from the IFI file the icing severity, icing probability and supercooled-large-drop (SLD) fields at the 3,000/6,000/9,000/12,000 ft bands.
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
Gridded turbulence overlay on the planning map and cruise-altitude hazard context, distinct from the G-AIRMET turbulence advisory.
Powers these features
The product surfaces below depend on this feed.
Map hazards layerCruise optimizer
Upstream source: https://nomads.ncep.noaa.gov/pub/data/nccf/com/dafs/v1.0/
Cite this
PermalinkAeroCopilot — DAFS Turbulence + Icing Guidance (GTG/IFI). Data: NOAA (https://nomads.ncep.noaa.gov/pub/data/nccf/com/dafs/v1.0/). https://www.aerocopilot.ai/data-sources/dafs-gtg.
Try the AI Copilot with this data
The Copilot has live access to DAFS Turbulence + Icing Guidance (GTG/IFI) during every conversation.