NOSIG
A trend forecast appended to a METAR indicating that no significant change in weather conditions is expected in the next 2 hours from the time of observation. NOSIG is used in international METAR practices (ICAO) and provides a short-range forecast directly within the observation report.
NOSIG
BKN025 NOSIG
SCT040 -RA NOSIG
NOSIG stands for "No Significant Change" in the remarks section of a METAR report. A trend forecast appended to a METAR indicating that no significant change in weather conditions is expected in the next 2 hours from the time of observation. NOSIG is used in international METAR practices (ICAO) and provides a short-range forecast directly within the observation report.
NOSIG 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: "NOSIG". This appears in the remarks section and indicates no significant change information as part of the weather observation.