I don't think they did that . Actualy i don't think any large organisation be it the IMF or The ECB or US treasury or any other central Banks would forecast any type of a deep dive if they'd see it coming , the terminology they'd use in such a case would be more " politicaly correct " as to not alleviate fears and as to avoid any panic wich could translate in an even worse scenario .

But we all know this , perception is all mighty and governments can"t aknowledge their incompetence or incapacity without dire consequences for their own jobs .

Regards !

Tec