Select a Radiosonde from the list and click 'SkewT' to plot. Note that not all radiosonde types are supported.
For assistance interpreting SkewT plots, try this guide.
Here you can access various weather overlays.
Notice: If you enable this, your location will be uploaded to SondeHub; making it publicly visible on the map.
You can report a recovery here. Enter the serial number (no type code, e.g. 'S1234567'), tick recovered/not recovered, and add some notes. If the sonde is not on the map, type its callsign into the top-left search box and press enter to retrieve historical data. You can then mark it as recovered. Optionally, you can use your location instead of the sonde's last location.