As far as I can see in the SYNOPSYNOP SYNOP (surface synoptic observations) is a numerical code (called FM-12 by WMO) used for reporting weather observations made by manned and automated weather stations. SYNOP reports are typically mad hourly and consist of groups of numbers (and slashes where data is not available) describing general weather information, such as the temperature, barometric pressure and visibility at a weather station. observations that I’ve downloaded for July 2023, and in complete contrast to July 2022 when temperatures exceeded 40°C, there wasn’t one single day when the maximum temperature [06-18] exceeded or equalled 30°C. Not many people know that😉
