Partial Thickness
Significant UVV or low-level cold advection
Weak UVV and near zero low-level cold advection
Snow or sleet except may be freezing rain near 154, usually rain with south winds in warm sector
Snow, except sleet and/or freezing rain is possible near 154
Sleet except may be snow near 154)
Sleet or snow except usually freezing rain or drizzle, rain in warm sector with south winds
Freezing rain but may be sleet near 154
Freezing rain, freezing drizzle or sleet
Adapted from Cantin et al. 1990
Used for southeastern Canada
Freezing rain or freezing drizzle