boondr
Penalty Vectorer
Just one example of what the first thunderstorms of the season did to an aircrafts flight path on Sunday afternoon in the DC area. (all these turns were to avoid the fast moving cells, not holding patterns.)
http://flightaware.com/live/flight/VNR161/history/20090329/2035Z/KJYO/KMMU
http://flightaware.com/live/flight/VNR161/history/20090329/2035Z/KJYO/KMMU