RSS FeedsDiscussion on Sounding 7 - Freezing Drizzle
This case falls into the category of no ice activation below -12C to -15C. Temperatures in the surface-based cloud layer
only get down to -9C...which is not cold enough to produce ice. Having the surface
at a temperature of <32F...freezing precipitation results.
Rain or drizzle?
Since the cloud never has ice, freezing drizzle and growth of droplets of water by collision-coalesence is likely. This is the warm cloud growth process and will likely produce drizzle. The inversion also favors drizzle, limiting vertical motion.