FZRANO
Indicates that the automated station's freezing rain sensor is not operating. Without this sensor, the station cannot detect or report freezing rain events. This is critical information during cold weather, as the absence of FZRA in the report should not be taken as confirmation that freezing rain is not occurring.
RMK FZRANO
RMK AO2 FZRANO
RMK FZRANO $
FZRANO stands for "Freezing Rain Sensor Not Available" in the remarks section of a METAR report. Indicates that the automated station's freezing rain sensor is not operating. Without this sensor, the station cannot detect or report freezing rain events. This is critical information during cold weather, as the absence of FZRA in the report should not be taken as confirmation that freezing rain is not occurring.
FZRANO appears in the remarks (RMK) section at the end of a METAR observation. The remarks section follows the main body of the METAR and provides additional details about the observation that don't fit into the standard coded format.
Here is an example: "RMK FZRANO". This appears in the remarks section and indicates freezing rain sensor not available information as part of the weather observation.