NZFF

Any one following this it was Launched May 16, 2016 from Wanaka airport.

http://www.csbf.nasa.gov/newzealand/wanaka.htm

http://www.csbf.nasa.gov/map/balloon9/flight669nt.htm

http://www.csbf.nasa.gov/map/balloon9/Google669NT.htm

On its second time around the earth the speed it travels at varies from just 3 or 4 knots up to 3 or 4 hundred knots
It is interesting to check it each day to see the speed and direction it has taken also its height as it has been at varies from around 80000ft to ove7 110000ft

I recall this first launch couple years back, you gotta love the tracking cameras just to add to the excitement.