Last night midnight radiosonde (V1630925) in Finland had pretty abnormal ascent/descent speeds. It went up much slower than normally (probably wet or under-fill) and came down even slower most of the flight, about -2m/s. Our club receiver got first packet at elevation 0deg and last packet at -0.4 deg (334km) which is wayyy behind the radio horizon. #radiosonde #sonde #vaisala #weatherballoon
