Runway Visual Range: Understanding METAR Reports

What does R13/1500V2400FT/D mean on a METAR (RVR) report? The notation R13/1500V2400FT/D in a METAR report describes the runway visual range as 1300 meters, with variable visibility between 1500 and 2400 feet, and this visibility is decreasing.

Have you ever wondered what those cryptic codes in METAR reports mean, especially when it comes to runway visual range? Let's decode the mystery behind the R13/1500V2400FT/D notation:

Decoding R13/1500V2400FT/D:

The term R13/1500V2400FT/D found in a METAR report, which indicates runway visual range, can be broken down as follows:

R: Denotes that it pertains to the runway.
13: Indicates the runway visual range is 1300 meters.
1500V2400FT: Shows that the visual range is variable, with a variability between 1500 and 2400 feet.
/D: Stands for decreasing, meaning that the visual range is forecasted to decrease.

Therefore, the correct interpretation of R13/1500V2400FT/D is: Runway visual range is 1300 meters, variable between 1500 and 2400 feet, and decreasing.

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