•Rawinsondes are lunched worldwide twice a day at 0000 UTC and 1200 UTC.
•Rawindonses are normally launched 50 minutes prior to the standard time (1200, 0000 UTC), so that they sample the jetstream level around 250mb close to 1200 and 0000 UTC.
•The balloons typically rise about 20km (~60mb) before they
burst.
•It usually takes about an hour before it bursts.