USA Icing Probability 5000 FT to 23000 FT Current Analysis to 18 hour forecast
Outside Air Temp. Range Icing Type
2 ° C to -10° C Clear
-10° C to -15° C Mixed
-15° C to -20° C Rime
Most icing tends to occur at temperatures between 0°and -20°C
*More than 50% of those occur between -8 and -12°C
USA Max Icing Serverity
00H Analysis to 18H forecast FL010-FL300
Mixed ice, a combination of clear ice and rime ice that has the worst characteristics of both, can form rapidly when ice particles become embedded in clear ice and build a very rough accumulation.
Mixed ice is most likely to form at temperatures between -10° C to -15° C.