ocr: 2 Figure 1. Three-hour NNICE forecast from 0000 Universal Time, 11 March 1999, at a flight level around 5000 fect mean scc level. Level 2 icing is "light;" level 4 is "moderate;" and level 6 is "severe." Tho 5: contour is only from the radical neural network, the one that best forecasts the dangerous high intensity icing.