How far out do we want to go with this? Do we want to get insanely pedantic and state that the Ice Age was temporary? Would a years-long recession still amount to "temporary downturn"? The questions are ludicrous, including yours.
The average length of recessions since WWII has been about 10 months. The longest was 18 months. Do you have any reason to think the next recession will be much longer than that?