ENR 5.3  Other activities of a dangerous nature and other potential hazards

1   RADIOSONDE BALLOON ASCENTS

Meteorological radiosonde balloon ascents daily in Ljubljana 4604N 01431E at 04:30 UTC. Diameter of the balloon is 1,3 m; vertical speed is 5 m/s. Time of ascending is approximately 1 hour. Balloon is expected to burst at altitude of 20 to 25 km.