What does the METAR code "RMK SF5NS3 SLP134" indicate about cloud conditions?

The METAR code "RMK SF5NS3 SLP134" provides specific information about cloud conditions as it relates to the types and amounts of clouds present. The "SF" in the code indicates "Stratus Fractus," which are low, broken clouds often found in layers and can appear ragged in form. The "5" signifies that there are 5 oktas, which is a measurement of the cloud cover out of a total of 8 oktas. This implies that there are significant portions of cloud in the sky.

Following that, "NS" indicates "Nimbostratus," which are thick, dark clouds typically associated with continuous, steady precipitation. The "3" indicates that there are 3 oktas of Nimbostratus clouds. Therefore, the presence of both 5 oktas of Stratus Fractus and 3 oktas of Nimbostratus accurately describes a situation with a variety of cloud types affecting the weather conditions.

Understanding the meanings of these abbreviations is crucial for interpreting METAR reports. Familiarity with cloud types allows a pilot to assess weather conditions, which is essential for safe aviation operations. The combination specified in the code suggests reasonably substantial cloud cover, with both stratus clouds that may