What Is Freezing Drizzle?
Drizzle that falls as liquid but freezes on contact with cold surfaces, making roads and sidewalks icy. In technical terms: Supercooled drizzle drops (under 0.5 mm) that freeze on impact with subfreezing surfaces; often forms in shallow, relatively warm (warmer than about minus 10 degrees C) cloud tops lacking ice nuclei, without a melting layer.
Also called: FZDZ
Freezing Drizzle In Plain English
Drizzle that falls as liquid but freezes on contact with cold surfaces, making roads and sidewalks icy.
The Technical Definition
Supercooled drizzle drops (under 0.5 mm) that freeze on impact with subfreezing surfaces; often forms in shallow, relatively warm (warmer than about minus 10 degrees C) cloud tops lacking ice nuclei, without a melting layer.