Organisers have also announced a compensation deal for all 2011 ticket holders.
Pukkelpop organisers are considering the festival's future following the conclusions of a civil liability insurer report.
Belgium's Federal Council of Ministers has decided, as proposed by Minister Turtelboom, to designate the severe storm on Thursday 18 August at Pukkelpop Festival as a natural disaster.
After this year's devastation at Belgium festival, Pukkelpop, extra weather precautions have been put in place for Reading and Leeds Festivals, taking place this weekend.
The Chateau and The Shelter stage at Pukkelpop Festival in Belgium have collapsed during a severe storm just as Chicago rock band Smith Westerns were about to take the stage.
Foster The People have cancelled their appearance at Pukkelpop 2011.
Two acts have had to pull out on the Pukkelpop 2011 line up, organisers have confirmed.
All of the Pukkelpop 2011 tickets have sold out.
Fresh from a show at Rock Werchter 2011, Kasabian will return to Belgium to top the Saturday night of Pukkelpop 2011.