The jet stream is the wind at about 34,000 ft, where the airliners fly: eastbound flights ride it. Light winds Mist, fresh Cream, the strongest Orange.
Wind: NOAA's GFS model, the forecast hour nearest now, refreshed hourly.
The forecast is NOAA's HRRR model's simulated radar for the next six hours: a model, not a measurement.
Radar: NOAA MRMS, which removes birds, insects and ground clutter, via the Iowa Environmental Mesonet.