What does FZRA refer to in weather observation?

FZRA refers to "freezing rain," which is a specific weather phenomenon that occurs when rain falls and freezes upon contact with surfaces that are at or below freezing temperatures. The term is often used in weather observation to indicate the severity of the freezing rain conditions, with "heavy" typically denoting that significant amounts of freezing rain are occurring, which can lead to hazardous conditions such as icy roads and power line damage due to ice accumulation.

Heavy freezing rain can significantly impact transportation and infrastructure, making it crucial for observers to report accurately on such conditions. The choice that identifies "heavy freezing rain" directly corresponds to the meteorological implications and potential dangers associated with FZRA, focusing on the intensity and impact of the freezing rain event.

Other options, while related to winter weather, do not accurately describe FZRA. Light freezing rain would not align with the "heavy" descriptor, and moderate ice pellets or thunderstorms with rain convey different forms of precipitation that do not involve freezing rain specifically.